Your Premier Central Chiller Manufacturer & Supplier In China
TopChiller is providing the most economical and optimized central chillers to meet your demands

TopChiller can design and manufacture all types of central chillers for you

  • Cooling capacity 20 ton to 250ton
  • Temperature control 7℃ to 35℃
  • High-efficiency shell and tube heat exchanger
  • Original quality scroll and screw compressor
  • Air-cooled and water-cooled chiller available
  • Micro-computer temperature controller
  • Easy installation and operation
  • Convenient maintenance with low cost

Your Professional Central Chiller Manufacturer and Supplier in China

Central chillers are specially designed central chilling systems for both indoor chiller and outdoor chiller applications.

TopChiller is a professional central chiller or central chilling system manufacturer and supplier in China.

High-Efficiency Central Chillers manufactured from TopChiller have a widely cooling capacity from 20ton to 250ton of both air-cooled central chillers and water-cooled central chillers.

Good quality central chillers are great energy-efficient and can save processors up to 50% of electricity consumption costs.

This central chiller system continuously measures ambient and process conditions and will adjust to operate in the most efficient manner.

Our central chillers are designed and manufactured with electrical, mechanical, and control redundancy, along with predictive analysis, downtime is virtually eliminated.

High-quality central chillers made by TopChiller featuring outstanding advantages as below:

1. Widely range cooling capacity from 20ton to 150ton for individual central chiller unit, and can be paralleled to reach up to 600 tons.

2. Both an air-cooled central chiller and water-cooled central chiller with indoor and outdoor installation are all available to meet your specific requirements.

3. The world-famous top brand compressor providing constant cooling power to central chiller features high efficiency, low noise, and energy saving.

4. 220V 380V 415V 460V 50HZ/60HZ main power supply is available, and 220-230V 1Phase for control voltage.

5. A custom electrical control panel allows one point hook up and may include: Human Interface Device touchscreen and Programmable Logic Control.

6. The evaporator of central chiller is high-efficiency copper brazed stainless steel plate construction or High-efficiency shell and tube construction Carbon steel shell (water side) Copper tube with inner fin (refrigerant side)

7. The condenser of central chiller features heavy construction while maintaining maximum heat transfer, steel shell on the refrigerant side, copper tubing with the outer fin on the waterside, and removable heads for cleaning.

Central chiller is the most economical and optimized refrigeration system suitable for your plant or industrial process.

By using a central chiller, you will benefit a lot from the below points:

1. On average, a central chiller will save 50% electricity consumption and cost compared to traditional cooling systems.

2. Offering expansions up to 10 modules of central chillers with 600 tons of the total cooling capacity within the same control platform.

3. Virtually Eliminate Downtime, central chiller sterling maximizes uptime with a redundant design.

4. Very flexible option, you can install 1-2 individual chiller. of course, you can add or combine 3-5 individual chillers together. This configuration depends on your central chiller cooling capacity required.

As a professional central chiller manufacturer and supplier, TopChiller offers the latest in the efficient, reliable central chiller and central chilling systems.

Combining smart technology with modular capabilities, these central chillers are designed to reduce downtime and grow with expanding application needs

Central Chiller Technical SpecificationsCentral Chiller Technical Specifications
Model                                                          ItemsTPW-100WSHTPW-135WSHTPW-175WSHTPW-190WSHTPW-230WSHTPW-255WSHTPW-300WSHTPW-350WSHTPW-375WSHTPW-415WSHModel                                                            ItemsTPW-470WSHTPW-500WSHTPW-560WSHTPW-590WSHTPW-610WSHTPW-720WSHTPW-790WSHTPW-840WSHTPW-940WSH
Cooling Capacitykcal/h86000116100150500163400197800219300258000301000322500356900Cooling Capacitykcal/h425700447200490200533200550400645000705200756800851400
Input PowerKW22303742515665758090Input PowerKW103109118127131151167177199
Max CurrentA405367738997109126137153Max CurrentA177187203218225260288306345
Power Source3PH~380V/415V/480V~50HZ/60HZ(3PH~200V/220V   50HZ/60HZ)Power Source3PH~380V/415V/480V~50HZ/60HZ(3PH~200V/220V   50HZ/60HZ)
ControlThermostatic expansion valveControlThermostatic Expansion Valve
CompressorTypeSemi-hermetic screwCompressorTypeSemi-hermetic Screw
Start modeY-△Start ModeY-△
Capacity control%0-33-66-1000-25-50-75-100Capacity Control%0-25-50-75-100
EvaporatorTypeShell and tube (SS plate heat exchanger)EvaporatorTypeShell and tube (SS plate heat exchanger)
Chilled waterm³/h17.223.23032.74043.951.660.264.571.4Chilled Waterm3/h85.189.498106.6110129141151.3170.4
Water pressureKPa35353538404242454543Water PressureKPa404143454545454345
Pipe connectionInch3″3″3″3″4″4″4″4″4″4″Pipe ConnectionInch5″5″5″6″6″8″8″10″10″
CondenserTypeWater cooled type shell and tubeCondenserTypewater cooled type Shell and tube
Cooling waterm³/h2128.436.64048.353.562.87378.286.8Cooling Waterm3/h102.8108.2118.3128.5132.6155169.7181.8204.5
Water pressureKPa42424243424343454545Water PressureKPa484546484648484547
Pipe connectionInch3″3″3″4″4″4″4″4″5″5″Pipe ConnectionInch5″5″6″6″6″8″8″10″10″
Safety protection devicesInner thermostat for compressor motor, unit overload relay, high and low pressure switch, freeze protection thermostat, reverse phase protection relay, discharge gas thermostat, flow switchSafety protection devicesInner thermostat for compressor motor, unit overload relay,high and low pressure switch, freeze protection thermostat, reverse phase protection relay, discharge gas thermostat, flow switch
Net weightkg65090010501200155018001900205020502350Net weightkg250025002650285031503350362038504160
Running weightkg820105012001400180021002200235023802530Running weightkg270030003100335037504000430046005000
The above specifications are according to the following design conditions:
1, Chilled water inlet/outlet temperature 12℃/7℃.
2, Cooling water inlet/outlet temperature 25℃/30℃.
We reserve the right to modify the specifications without further notice.
The above specifications are according to the following design conditions:
1, Chilled water inlet/outlet temperature 12℃/7℃.
2, Cooling water inlet/outlet temperature 25℃/30℃.
We reserve the right to modify the specifications without further notice.
Central Chiller Technical Specifications
Model                                                     ItemsTPAS-80ASHTPAS-110ASHTPAS-140ASHTPAS-160ASHTPAS-190ASHTPAS-210ASHTPAS-250ASHTPAS-290ASHTPAS-310ASHTPAS-340ASHTPAS-400ASHTPAS-430ASH
Cooling capacitykcal/h6880094600122980135020164260180600212420245100266600292400348300369800
Input powerKW32.543.654.759.773.679.688.2101.2112.8123.8145155
Max CurrentA577595103125135151173191211246263
Power source3PH~380V/415V/480V~50HZ/60HZ(3PH~200V/220V   50HZ/60HZ)
ControlThermostatic expansion valve
CompressorTypeSemi-hermetic screw
Start modeY-△
Capacity control%0-33-66-1000-25-50-75-100
EvaporatorTypeShell and tube (SS plate heat exchanger)
Chilled waterm³/h13.818.924.627.032.836.142.549.053.358.470.074.0
Water pressureKPa323235384242454343434143
Pipe connectionInch3″3″3″4″4″4″4″4″5″5″6″6″
CondenserTypeAir cooled type high efficiency finned cooper tube
FanTypem³/hBig volume & low noise axil fan
Air volumem³/h30000400005000060000700008000090000100000110000116000145000165000
                   Safety protection devicesInner thermostat for compressor motor, unit overload relay,high and low pressure switch, freeze protection thermostat, reverse phase protection relay, discharge gas thermostat, flow switch
Net weightkg110013001600190022002350255028002850295032003550
Running weightkg130015001840220025302700295032503350356036503950
The above specifications are according to the following design conditions:
1, Chilled water inlet/outlet temperature 12℃/7℃.
2, Cooling air inlet/outlet temperature 30℃/38℃.
We reserve the right to modify the specifications without further notice.
Central Chiller Technical SpecificationsCentral Chiller Technical Specifications
Model                                                             ItemsTPW-200WDHTPW-270WDHTPW-350WDHTPW-380WDHTPW-460WDHTPW-510WDHTPW-600WDHTPW-700WDHTPW-750WDHTPW-830WDHModel                                                              ItemsTPW-990WDHTPW-1040WDHTPW-1140WDHTPW-1240WDHTPW-1280WDHTPW-1500WDHTPW-1640WDHTPW-1760WDHTPW-1980WDH
Cooling Capacitykcal/h172000232200301000326800395600438600516000602000645000713800Cooling Capacitykcal/h851400894400980400106640011008001290000141040015136001702800
Input PowerKW44607484102112130150160180Input PowerKW206218236254262302334354398
Max CurrentA405367738997109126137153Max CurrentA354374406436450520576612490
Power Source3PH~380V/415V/480V~50HZ/60HZ(3PH~200V/220V   50HZ/60HZ)Power Source3PH~380V/415V/480V~50HZ/60HZ(3PH~200V/220V   50HZ/60HZ)
RefrigerantTypeR22 (R134a / R407c / R404A)RefrigerantTypeR22 (R134a / R407c / R404A)
ControlThermostatic expansion valveControlThermostatic expansion valve
CompressorTypeSemi-hermetic screwCompressorTypeSemi-hermetic screw
Start modeY-△Start modeY-△
Capacity Control%0-33-66-1000-25-50-75-100Capacity control%0-25-50-75-100
EvaporatorTypeShell and tube (SS plate heat exchanger)EvaporatorTypeShell and tube (SS plate heat exchanger)
Chilled Waterm3/h344660657988103120120143Chilled waterm³/h170179196213220258282303340
Water PressureKPa35353538404242454543Water pressureKPa404143454545454345
Pipe ConnectionInch4″4″4″5″5″6″6″6″8″8″Pipe connectionInch8″8″8″8″10″10″10″12″12″
CondenserTypeWater cooled type shell and tubeCondenserTypeWater cooled type shell and tube
Cooling Waterm3/h4257738097107126146156174Cooling waterm³/h206216237257265310339364409
Water PressureKPa42424243424343454545Water pressureKPa484546484648484547
Pipe ConnectionInch4″4″4″5″6″4″×24″×24″×25″×25″×2Pipe connectionInch5″×25″×26″×26″×26″×28″×28″×210″×210″×2
Safety protection devicesInner thermostat for compressor motor, unit overload relay,high and low pressure switch, freeze protection thermostat, reverse phase protection relay, discharge gas thermostat, flow switchSafety Protection DevicesInner thermostat for compressor motor, unit overload relay,high and low pressure switch, freeze protection thermostat, reverse phase protection relay, discharge gas thermostat, flow switch
Net weightkg1650180018502200245026502800280034503750Net weightkg395041004450470050005250550057506000
Running weightkg1950218022402660296032003380358041604360Running weightkg476047705270546058006100640066806970
The above specifications are according to the following design conditions:
1, Chilled water inlet/outlet temperature 12℃/7℃.
2, Cooling water inlet/outlet temperature 25℃/30℃.
We reserve the right to modify the specifications without further notice.
The above specifications are according to the following design conditions:
1, Chilled water inlet/outlet temperature 12℃/7℃.
2, Cooling water inlet/outlet temperature 25℃/30℃.
We reserve the right to modify the specifications without further notice.
Central Chiller Technical Specifications
Model                                                          ItemsTPAS-160ADHTPAS-220ADHTPAS-285ADHTPAS-315ADHTPAS-380ADHTPAS-420ADHTPAS-495ADHTPAS-570ADHTPAS-620ADHTPAS-680ADHTPAS-810ADHTPAS-860ADH
Cooling capacitykcal/h137600189200245960270040328520361200424840490200533200584800696600739600
Input powerKW64.786.6106.2118.8145159.2177.2207.6225.6247.6290310.4
Max CurrentA114149185205250274308358388428500533
Power Source3PH~380V/415V/480V~50HZ/60HZ(3PH~200V/220V   50HZ/60HZ)
ControlThermostatic expansion valve
CompressorTypeSemi-hermetic screw
Start modeY-△
Capacity control%0-33-66-1000-25-50-75-100
EvaporatorTypeShell and tube (SS plate heat exchanger)
Chilled waterm³/h27.537.849.15465.772.28598106.6117139.3147.9
Water pressureKPa323235384242454343434143
Pipe connectionInch4″4″4″5″6″6″6″6″8″8″8″10″
CondenserTypeAir cooled type high efficiency finned cooper tube
FanTypem³/hBig volume & low noise axil fan
Air volumem³/h6000080000100000116000145000165000180000205000225000242000285000325000
Safety protection devicesInner thermostat for compressor motor, unit overload relay, high and low pressure switch, freeze protection thermostat, reverse phase protection relay, discharge gas thermostat, flow switch
Net weightkg205025202980318034203730395043304650493054505850
Running weightkg236028703420369037804180438046504920536058306530
The above specifications are according to the following design conditions:
1, Chilled water inlet/outlet temperature 12℃/7℃.
2, Cooling air inlet/outlet temperature 30℃/38℃.
We reserve the right to modify the specifications without further notice.

Why TopChiller is Your Reliable Central Chiller Manufacturer and Supplier In China?

Experienced In Central Chiller
Over 20 years rich experience of central chiller manufacturing, we offering a complete ine of central chiller designs and models to meet your requirements.
One-Stop Solutions Provider
Our services including: central chiller requirement communication, analysis, designing, manufacturing, quality controlling, chiller delivery, Keep advising not just chiller manufacturing.
Reduce Your Costs
With rich experience of making central chillers for your industrial applications can help to work out the correct central chiller suitable for your needs,our high quality central chillers will save your costs.
Top Quality Chiller
We always take good care of your central chiller order from design,raw material purchasing,manufactured,testing and delivery to make sure all central chiller making processes are under quality control.
Global Chiller Shipment
No matter which country you are from, just tell your nearest seaport or airport name, we can arrange your central chiller order at fastest shipping even can do door to door delivery.
No Worries Service
World business trip/central chiller related exhibitions&fairs 2-3 times yearly can settle face to face meeting, 24*7*365 online service service with fast feedback.

Other Chiller Types Related With Central Chiller

Central Chiller: The Ultimate FAQ Guide

I know you’re probably looking for a high performance central chiller.

That’s why this guide will answer all questions you have been asking about this chiller system.

Whether you want to learn about the specifications, parts, working principle or classifications, all the information is right here.

Keep reading to learn more.

What is Central Chiller?

A central chiller is a machine efficient at extracting heat from a liquid (usually water).

Thereby, cooling it to a favorable temperature.


 Central chiller

It performs cooling either through vapor compression cycles, absorption refrigeration processes, or absorption refrigeration cycles.

However, the chiller is a uniquely designed.

This is because it efficiently cools down several processes all over a factory simultaneously.

It means, you can cool numerous applications concurrently with a single machine at a uniform temperature.

What are the Available Types of Central Chillers?

Generally, central chillers are available in the two root primary classes of chillers, i.e., Air-cooled chillers and water-cooled chillers.

Consequently, we classify the central chillers into the two major types:

  • Air-cooled central chillers
  • Water-cooled central chillers.

1. Water-cooled Central Chillers


Water cooled chiller

These chillers have got water-cooled condensers connected to a cooling tower

The water-cooled chillers are most prevalent in medium to large industrial setups and commercial industries with a reliable water supply.

These chiller types perform averagely constant due to relative independence on the continuously fluctuating ambient temperature.

The water-cooled central chillers are available in several working capacities ranging from twenty tons to thousands of tons.

Besides, the more giant capacity machines are standard in large enterprises such as airports, shopping malls, factories, etc.

The standard water-cooled central chillers use recirculating water condenser from the cooling tower to condense the circulating refrigerant.

Standard water-cooled central chillers are indoor setups void of damaging elements.

Thus, the chillers have a longer lifespan than corresponding Air-cooled central chillers.

2. Air-cooled Central Chiller


 Air cooled chiller

Air-cooled central chillers have got condensers reliant on ambient air for effective cooling.

Therefore, these air cooled chillers are convenient for use in small to medium enterprises with space constraints.

More importantly, Air-cooled central chillers present a typical practical solution to enterprises with unreliable water supply.

Usually, these chillers have got propeller fans or employ mechanical tubings to draw ambient air over the finned coil, which condenses the refrigerant.

Significantly, the Air-cooled central chillers avail an option of lower installation costs.

Besides, they are easier to maintain due to their relatively simple structure compared to the water-cooled type.

Due to their reliance on a fresh supply of ambient air, the Air-cooled central chillers will most appropriately require an outdoor setup.

That will, however, expose them to numerous elements that may compromise their lifespan.

Ultimately, the general flexibility concerning space utilization, costs, and performance of the air-cooled central chillers makes them suitable for many installations

Why Should You Install Central Chiller?

You should undoubtedly install a central chiller in case your situation matches any of the following scenarios:

Simultaneous operation: operating on several processes can be challenging.

However, with the central chiller, you shall promptly and efficiently manage them concurrently—just one chiller for all.

Better and improved indoor air quality control: the term indoor air quality refers to the air quality inside buildings.

That is, how it affects the occupants’ health.

Particulates and harmful gases to human health may influence air quality.

Luckily, the chiller system does not hamper the air quality.

Instead, it enhances improved IAQ control due to non-emissions.

Reduced life cycle expenditure: the central chillers’ life cycle expenditure refers to the total of the recurring expenses and the non-recurrent fee.

Usually, the costs span from acquisition to disposal.

By extensions, the central chillers consume little life costs.

Energy efficiency: with the central chillers, you will enjoy lots of energy savings compared to the typical chillers.

The cost savings on energy is amongst the sole reasons for the preference of the central chillers.

Offers room for expansion: with the modular series, your central chiller is expandable to achieve greater cooling heights and capacity.

Therefore, you can add more chillers but under a similar control panel.

Are There Limitations of Central Chillers?

The central chillers do have some additional drawbacks.

A significant one is a need for extensive floor space requirements.

The chillers’ bulky nature and size will require a more expansive floor room and plenum space for installations.

The ultimate result; the need for increasing the building’s height.

They tend to have complicated installation procedure.

This because the central chiller may come with countless auxiliary parts and connections, together with piping.

In such situations, installation may be tiresome and tricky.

What Should You Consider When Installing Central Chilling System?

Installation of a central chiller is a necessary procedure that needs a specialized technical approach.

Whereas the process could be direct and straightforward, you still have to follow some protocols before setting in.

Below are some of the factors that you have to consider before installing the central chiller.

Floor space: central chillers are generally quite large.

Though their size might vary depending on the machine type, the chillers are usually extensive in scope, thus demanding large space.

Consequently, you have to allocate an adequate room to cater to that enormous space need and maintenance allowance.

Plenum space: Before anything else, reconsider the plenum space allocation. The height of your building should be higher.

If possible, consider increasing the size of the building.

Installation ground: always install the chiller on a level, tangible and concrete floor capable of withstanding the chiller’s weight.

Therefore, chillers vibrate when operating, thus, construct a broad concrete foundation for the machine.

Plus, you can fix flexible joints to help with the vibration

Piping and wiring preparedness; note that the machines come with technical specifications documents.

Always refer to the manual for the connection sizes, piping, and electrical demands.

Which are the Components of the Central Chiller?

The central chiller’s main components include a compressor, condenser, evaporator, expansion valve, power unit, and control unit.


Parts of Chiller System

Compressor: The compressor creates a differential pressure that is adequate to drive the refrigerant throughout the machine system.

You can choose a suitable compressor depending on your application from the following types: screw, scroll, centrifugal and reciprocating compressors.

You shall find the compressor in between the evaporator and the condenser.

Condenser: it expels excess heat from the refrigerant, that heat might have accumulated in the evaporator.

The condenser is always located just before the expansion valve and behind the compressor.

Most often, you will choose from the two condenser types, i.e., air-cooled and water-cooled condensers.

Expansion valve; the valve heats the refrigerant, thereby expanding, reducing its pressure and finally increasing its volume.

Such refrigerant thus easily pick-up the excess heat accumulated in the evaporator.

In the unit, the component exists between the condenser and the evaporator.

Evaporator: it accumulates excess heat from the system and then stirs it into the refrigerant.

Subsequently transmitting the thermal energy to the cooling tower for rejection.

Its location is between the compressor and the expansion valve.

Power unit: it controls the flow of electrical energy to the chiller.

The power unit could contact the machine, mounted to the wall, or installed separately from the chiller.

The power unit comprises starters, circuit breakers, etc.

Control unit: the controls come attached to the chiller.

With the control unit’s help, you get to monitor the machine’s performance, thus allowing you to tweak its performance.

You can safely monitor alarms, shut down the engine, and remotely control the device through the control unit.

Water box; the water box either directs the flow of water or segregates the exit or entrance.

The water boxes have either 1 or 2 flanged door or entrance holes depending on the evaporator and condenser passages.

Better still, you can choose a wholly capped water box that redirects the flow back into a nearby pass.

Note that the water box only applies to the water-cooled central chillers.

How do You Improve Efficiency of Central Chiller?

You can improve the central chiller’s efficiency by undertaking deliberate yet critical measures.

Nonetheless, we can widely classify these measures under the following vote heads.

i. Continuing Maintenance

Just like other typical machines, the central chillers require constant maintenance to operate efficiently.

Considering that, you need to follow standard practices to ensure that the chiller maintains its optimum functionality.

  • Always inspect and clean the condenser coils.

The maintenance practice should involve checking the rings for any clogging and blocked passageways.

  • Strive to maintain a refrigerant charge. The benefit is that it aids in cutting down the energy costs by almost 5% to over 10%.
  • Maintain purified condenser water. The water should be free from debris such as sand, fouls, scales, and contaminants.

ii. Prognostic Maintenance

Chiller systems often experience total breakdown and system failures.

However, with the integration of Artificial Intelligence, you can significantly avoid any potential and unpredictable maintenance.

Incorporating the AI algorithm enables the prior collection of system data and subsequent analysis to aid in scheduling maintenance practices.

That would readily avert potentially catastrophic system failures.

Moreover, the Internet of Things also helps provide a data collection center for accumulating data suitable for enhancing the AI applications in predictive maintenance.

IoT comes ahead of every other prognostic care because it helps collect actual data from a chiller system, thus enabling continual data analysis.

iii. Optimization

Before setting out your optimization goal, you have to evaluate the central chiller’s performance by analyzing every component’s total power.

However, such an action wouldn’t be possible without reliable data.

The excellent news – IoT provides the data required to perform a holistic optimization of the chiller.

The adjustments you may reconsider include: adjusting setpoints, load balancing, cooling tower management, chiller sequencing, etc.

What are Central Chiller’s Specifications?

You can always find the complete guide to the chiller’s technical information and specifications imprinted in the product’s manual.

Nonetheless, below is an overview of what information you should expect regarding the machine’s specifications.


 Central chiller system

Cooling specifications: refers to cooling capacity, fluid discharge temperature.

Pump specifications: process flow, process pressure, compressor motor horsepower, pump rating, reservoir capacity.

Power source; rated in voltage/ Frequency/ Phase i.e 115/60/1, 380/ 50/3

Industry/application; include industrial, HVAC, medical, hydraulic, laboratory, laser, plastics, etc.

Operating environment; incorporate installation- indoor, outdoor, weatherproof, explosion-proof, operating temperature.

Condenser cooling system; Air-cooled, water-cooled, remote air split system, other

P.S the above specifications are never constant amongst central chillers but vary depending on the central chillers size/ tonnage.

For instance, a 100 tone central chiller would have completely different magnitudes of specifications from a corresponding 1000 tone machine.

How Does Central Chillers Work

The working of the central chiller begins from the compressor.

It creates a pressure difference to move the refrigerant all through the system.

An electric motor drives the compressor.

The refrigerant enters the compressor at low temperature and pressure while in a gaseous state.

However, it exits the compressor at high temperature and high pressure to the condenser.

The refrigerant then enters into the condenser from a distinct chamber and exits through another.

Also, the condenser extracts the heat from the refrigerant, which accumulated in the evaporator.

The condensers are of two types; Air-cooled condensers and water-cooled condensers.

For a water-cooled central chiller, the hot water leaves the condenser and enters the cooling tower.

Due to the cooling tower’s occurring evaporation, the water goes and flows into the condenser at a lower temperature.

The cycle then continues repeatedly.

Note that the refrigerant and the water never mix; they are always kept separate by a piped wall shell.

In the condenser, the refrigerant flows inside the pipes while the refrigerant flows outside the tubes.

Elsewhere, for air-cooled central chillers, the cooling tower does not exist.

Instead, blown air flows through the exposed condenser pipes to extract heat from the refrigerant flowing through the condenser pipes.

After that, the refrigerant exits the condenser and enters the expansion valve.

The expansion valve expands the refrigerant increasing its volume while reducing its pressure.

With that, then the refrigerant picks unwanted heat inside the evaporator.

The evaporator collects unwanted heat from the incoming water that enters while hot and subsequently transfers the heat to the refrigerant.

After that, it exits the evaporator having a lower temperature.

That temperature is adequate to cool the buildings.

The refrigerant enters the evaporator at a mixed state of liquid and gas and exits at a gaseous state to join the compressor.

The cycle then repeats itself.

What are the Available Types of Compressors In Central Chillers?

There are majorly four kinds of compressors, namely:

  • Screw compressors
  • Scroll compressors
  • Centrifugal compressors
  • Reciprocating compressors.

What are the Differences Between a Centralised Chiller and a Decentralised Chiller System?

A centralized chiller system serves several distinct machines concurrently.

Elsewhere, a decentralized chiller system is limited to a single particular device.

Meaning, you would use a centralized chiller with numerous equipment while a decentralized chiller for a single machine.

Therefore, if you run a plant with several machines that require similar cooling specifications, then a centralized chiller system is perfect.

However, in factories that utilize devices with varying temperatures and specificities, the process water would require installing a decentralized chiller type.

Nevertheless, you can still utilize the services of both at your facility.

That is possible if you have two sets of machines which require two distinct kinds of cooling.

Most importantly, you have to note that there is no better-centralized chiller between the two; the difference only lies in the efficiency ratings amongst similar machines.

Nevertheless, centralized chiller systems are most prolific due to their energy efficiency and conservation rates.

How Much Do Central Chillers Cost?

Central chillers never cost much, but most importantly, their costs vary by the following critical factors:

  • Chiller’s size, i.e. a 25-ton chiller, costs less compared to a 100-ton chiller.
  • The chiller’s horsepower (HP); highly rated ones cost more.
  • Company’s profile; some companies generally have lower rates compared to others. The injunction is to buy a quality chiller at reasonable prices.

How Do You Install Central Chillers?

Location; Initially, you have to determine the machine’s precise location, whether outdoor or indoor.

Air-cooled central chillers are usually outdoor equipment, while the water-cooled type is indoor machines.

Ensure that the supporting base is completely flat and free from any obstacles whatsoever,

Foundation- support; Construct foundation support for the machine; you can select between dual parallel U-steel or I-steel.

Plus, you may install anti-vibration Mounts (AVM), either spring or rubber types on the foundation. That equipment dramatically reduces noise and vibration.

Spacing: next, accord the machine sufficient spacing/ room for ventilation and maintenance. Note that you should access any particular side of the machine for the post-installation kind of care.

A distance of 1.5meters to 2 meters is ideal.

Water piping; Design any water piping while ensuring that you maintain the least quantity of elbows and a minimum number of abrupt changes in the direction.

That mode of installation saves you significantly the installation costs while enhancing the machine’s performance.

Water treatment; Before starting the machine, clean the water circuit properly.

Flow switch; always install a flow switch in the water circuit to guarantee that only sufficient water flows via the evaporator.

Heat recovery, if you may, incorporate a heat recovery system.

Electrical installations; qualified, certified personnel should be the ones to do all electrical kind of setup.

Moreover, the technician has to follow the prerequisite guidelines and protocols.

What Are The Testing Protocols For Central Chillers Before Shipping?


Central chiller

Before shipping, you must do the following two primary tests;

I. Energy performance assessment

II. Seasonal variation/ part-load performance.

Energy performance assessment; aims to assess the amount of energy a chiller requires to implement a specific cooling quantity given in  KW/TR units.

Seasonal variation/ part load performance; assess the central chiller’s performance while operating under part loads.

Precisely, you need to initiate the integrated part-load value to determine chiller’s performance when working under part-load conditions.

How Do You Maintain Central Chillers?

Routine maintenance is essential for the central chiller to maintain optimum performance.

However, qualified personnel has to perform full maintenance.

Firstly, you have to create a standard routine maintenance plan for your central chiller.

The program should outline all the necessary activities against the corresponding frequency of performing them.

The plan incorporates general activities, including reading the operational data, cleaning, visual inspection of any damages, analyzing water, verifying the flow switch process, etc.

It also includes the electrical activities, visual inspection for overheating, checking control sequence, and confirming whether all electrical terminals are tight.

Furthermore, it also involves cleaning the electrical control board, measure compressor motor insulation, etc.

Activities related to the refrigeration circuit; verify whether there is a refrigerant leakage, confirm the refrigerant flow rate by use of sight glass, analyse vibration of the compressor, etc.

Condenser section; check whether fans are tight enough, check the condenser bank fins, etc.

Please note that you will find more of the maintenance practices even specific to your machine from the technical manual.

Which Safety Features Do Central Chillers Have?

The following are a few of the various safety features of the central chillers.

  • Capacity controls
  • The high and low-pressure trip, low oil pressure trip
  • High and low pressure cut out
  • Low oil pressure cut out
  • Oil separator
  • Refrigerant flow controls
  • Fuses
  • Flow switches, amongst others.

What is the Average Cooling Capacity of Central Chillers?

The average cooling capacity of central chillers are 2500KW in metric units, or 8533364BTU/h in imperial units, or 711 refrigeration tons.

Do Central Chillers Have a Warranty?

Yes, though the warranty duration varies amongst the manufacturers or suppliers.

Some units have 12 months warranty as of initial start-up or 18 months as of delivery.

Most importantly, you always need to verify and conform to the chiller’s stipulated terms of the warranty, as indicated in the warranty leaflet.

How Do Central Chillers Compare to HVAC System?

An HVAC system refers to heat, ventilation, and conditioning chillers.

It is a regulatory heat machine that combines the mechanisms of heating, air circulation, and conditioning.

Unlike the central chillers, the HVAC’s working principle entails the technique of fluid dynamics and thermal energy exchange to obtain cooling.

Moreover, the HVAC system works by availing the three core roles of ventilation, heat generation, and air conditioning.

Consequently, a central chiller is entirely different from an HVAC system.

How Does Central Air Conditioners Compare to Central Chillers?

Well, central air conditioners are machines that regulate several rooms’ temperature by controlling the air humidity.

The device is suitable whenever you require a similar temperature range for different places.

Air conditioners efficiently convert the room temperature from hot to cold (moderate) temperature.

Better still, some advanced central air conditioners may heat cold room air temperature to a suitable warm temperature range.

Interestingly, some of them have got wireless control system allowing users to control them remotely.

Moreover, central air conditioners are suitable for use in the rooms, offices, and homes to regulate temperature levels.

Therefore, central chillers and central air conditioners are far apart in terms of function, application, and performance.

Where Can You Install Central Chillers?

The two prime locations for installing the central chillers are outdoor and indoor sites, depending on the chiller type.

It is recommended by manufacturers that you install air-cooled central chillers outdoors to enhance proper ventilation.

However, you can install water-cooled central chillers either indoors or outdoors, depending on your application.

What Is The Working Temperature of The Central Chillers?

Well, chillers have different ranges of working temperature depending on your application.

What’s paramount is that the chillers inlet process water is at higher temperatures while the outlet temperature is significantly low.

Most chillers deliver the process water at a temperature range of 50(10◦C) to 5F (-15∘C) and less depending on the machine.

What are The Quality Certifications For The Central Chillers?


Air cooled chiller

The following are some of the necessary quality certifications that your central chillers should achieve:

  • Engineered systems: NFPA 79 compliance; electrical safety measure for an industrial machine.
  • Power and control panel; NEMA 1, 3, 4, 4X, 7, 12 and IEC electrical enclosures, UL and cUL 508A listed panel, NEMA 12 rated electrical caps
  • Heating and cooling equipment; CAN/CSA C22.2
  • Environmental Management System; DIN EN ISO 14001:2015
  • AHRI certifications ( AHRI WCCL and AHRI ACCL)

With the information in this guide, you can definitely choose perfect central chiller systems.

However, in case you have any question or inquiry, TopChiller is here to help you – contact us now.

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