Your Reliable Chiller Manufacturer from China

TopChiller® is a leading chiller supplier in China since 1999 with over 20-years experience in the chiller filed.

Chillers can be divided into air chiller and water chiller in terms of cooling methods, can also be divided into scroll compressor chiller and screw compressor chiller depend on different compressor types. In terms of chilled water temperature, it can be divided into room temperature chiller and glycol low-temperature chiller.

A water chiller is also named water cooled chiller, coolant chiller or water chiller system. A water chiller is a mechanical device can produce chilled water(-35℃ to +30℃) for various industrial applications.

TopChiller® water chiller using USA Copeland, France Danfoss, and Japan Sanyo scroll compressors, all water chiller spare parts are from World-famous refrigeration brand.

This water chiller manufactured by TopChiller® is a compact design with a full protection device and portable wheels can move easily.

Chillers can provide constant cooling water, are becoming the necessary machines for modern industries including Plastic machine, food&beverage industries, medical machines such as CT scan and MRI machine, chemical processing and all industrial process cooling.

TopChiller is supplying a full product range of various chillers. All chillers including air chiller and water chiller manufactured by TopChiller win a high reputation in the market, because of its steady quality and full-time service.

As a professional chiller manufacturer, TopChiller has exported many chillers to the Philippines, Australia, New Zealand, Malaysia, Singapore, Indonesia, Chile, Mexico, Costa Rica, Brazil, Argentina, Colombia, South Africa, Nigeria, Saudi Arabia, Dubai, Spain, Italy, etc.

As a leading chiller supplier, TopChiller willing to provide all technical support to the client. If you have any chiller inquiry, please contact TopChiller sales to get your design and quotation.

 

  • Air Cooled Screw Chiller
  • Water Cooled Screw Chiller factory
  • Water Chiller supplier
  • Water Chiller
  • Air Chiller china

Why TopChiller Can Be a Reliable Chiller Factory?

Over 20 Years Chiller Manufacturing Experience
TopChiller is a leader of the chiller manufacturer with rich experience
18 months warranty time
TopChiller provide 18 months warranty can extend to 18 months covered all chillers
Top Brand Refrigeration Spare Parts
Each chiller from TopChiller using famous brand refrigeration spare parts
Technical Support & Training Service
TopChiller can provide all chiller installation and commission service on site
8 Hours Chiller troubleshooting
In case of any chiller error,TopChiller give a quick response within 8 Hours
Life time service
TopChiller promise give all chiller units whole lifetime service

TopChiller: Your Premier Choice
Of All Types of Chillers

TopChiller® Is Your Reliable Chiller Manufacturer in China

TopChiller® is a professional chiller supplier with over 20 years of experience in the industrial refrigeration field.

Chillers can be divided into water chiller and air chiller in terms of different cooling methods. TopChiller® having a complete chiller line including air cooled chiller, water cooled chiller, screw type chiller, industrial chiller, glycol chiller and various processing chiller for all industrial applications.

Water chiller manufactured by TopChiller® should connect with the circulation water pump and work with the proper cooling tower to keep the water chiller system best working performance and improve cooling efficiency.

This kind of chiller can be used for a plastic injection molding machine, blowing molding machine, plastic extruder, chemical industry, extrapolating and more other industrial fields to provide a constant chilled water flow rate to improve the development process and increase productivity.

All chiller units from TopChiller® factory are all 100% extremely tested and well packaged before delivery to make sure perfect working conditions.

Each TopChiller® water chiller having 18 month warranty time covered the whole chiller unit and all refrigeration spare parts.

As the most professional chiller supplier, TopChiller® would like to give a perfect chiller solution with competitive price.

 

 

Air Chiller spare parts

TopChiller: Your Leading Chiller Manufacturer

If you are looking for a chiller for your business?

If you want to know more information about chiller system?

If you have any question about chiller?

You are coming to the right place. In this page, you will get a clear idea about all chiller concerned information.

Chiller: Your Complete Buying Guide from TopChiller

Chapter 1: What is a chiller?

Chapter 2: What are the main components in a chiller?

Chapter 3: What’s the chiller working principle?

Chapter 4: What are the different types of chillers?

Chapter 5: Which refrigerant is used in chillers?

Chapter 6: What is a chiller used for?

Chapter 7: How to size a correct chiller for your business?

Chapter 8: How do you maintain a chiller system?

Chapter 9: Why TopChiller can be your reliable chiller supplier?

Conclusion

 

Chapter 1: What is a chiller?

A chiller is a mechanical device can remove heat from a liquid via a vapor-compression or absorption refrigeration cycle.

This water, oil or glycol liquid then will be circulated through a heat exchanger to cool equipment, or another process stream (such as air or process water).

As a necessary auxiliary machine, refrigeration creates waste heat that must be exhausted to the ambiance, or for greater efficiency, recovered for heating purposes.

Chilled water from the chiller is used to cool and dehumidify air in small size to- mid- to large-size commercial, industrial, and institutional facilities.

Chillers can be divided into water-cooled, air-cooled, or evaporatively cooled. Water-cooled systems can provide efficiency and environmental impact advantages over air-cooled systems.

Chiller Family

Chiller Family

Chapter 2: What are the main components in a chiller?

For a chiller unit,t the main components are the Compressor, Condenser, Evaporator, Expansion Valve, Temperature Controller and Dry Filter.

Compressor:
The compressor is the most important part of a chiller. We call compressor is the refrigeration heart for a chiller.

When compressor working, it creates a pressure difference to move the refrigerant around the system.

There are various designs of refrigerant compressors in a chiller, the most common being the centrifugal, screw, scroll and reciprocating type compressors.

Each type of compressor has its own advantages and disadvantages.

Chiller compressors are always located between the evaporators and the condensers. It’s usually partly insulated and will have an electrical motor attached as the driving force, this will be either mounted internally or externally.

Compressors can be extremely noisy, usually a constant deep droning sound with an overlaying high pitch, hearing protection should be worn when in close proximity to the chiller.

Condenser:
The condenser is one kind of certain heat exchanger.

It is located after the compressor and before the expansion valve. The purpose of the condenser is to remove heat from the refrigerant which was picked up in the evaporator.

There are two main types of condensers, Air cooled condenser and Water cooled condenser.

Water cooled condensers will repetitively cycle “condensing water” between the cooling tower and the condenser, the hot refrigerant which enters the condenser from the compressor, will transfer its heat into this water which is transported up to the cooling tower and rejected from the building.

The refrigerant and the water do not mix they are kept separated by a pipe wall, the water flows inside the pipe and the refrigerant flows on the outside.

But air-cooled condensers work slightly differently, they do not use a cooling tower but instead blow air across the exposed condenser pipes with the refrigerant flowing this time on the inside of the tube.

But what’s the difference between air cooled condenser and water cooled condenser? Please have a look at below video to get a clear idea.

Evaporator:

The evaporator is located between the expansion valve and the compressor, the evaporator is also another type of heat exchanger.

The purpose of the evaporator is to collect the unwanted heat from the building and move this into the refrigerant so that it can be sent to the cooling tower and rejected.

The water cools as the heat is extracted by the refrigerant, this “chilled water” is then pumped around the building to provide air conditioning, This “Chilled water” then returns to the evaporator bringing with it any unwanted heat from the building.

There is also two kinds of evaporators commonly, the shell and tube evaporator and plate heat exchanger evaporator.

For shell and tube evaporator:

For plate heat exchanger evaporator:

Expansion valve:
The expansion valve is a very important refrigeration component in a chiller.

It located between the condenser and the evaporator. Its purpose is to expand the refrigerant reducing its pressure and increase its a volume which will allow it to pick up the unwanted heat in the evaporator.

There are many different types of the expansion valve, the most common at the thermal expansion valve,  the electronic expansion valve.

The most popular expansion valve brand in the world is Danfoss.

Dry Filter:

In the chiller refrigeration system, the dry filter is an essential refrigeration component to improve and improve the working conditions of the chiller, or to improve the economics and safety of the chiller system.

Especially for the Freon refrigeration system, the refrigerant moisture must be strictly controlled, even if only a small amount of moisture is enough to freeze the expansion valve and cause system ice blockage.

The dry filter works very well in the chiller. It not only removes moisture from liquids or gases, but also removes solid impurities.

Since the dryer and filter are assembled together, we call it a dry filter. It is a combination of a desiccant and a filter element in a housing. In the chiller refrigeration system, the desiccant filter is a safety protection device.

In our common Freon refrigeration system, the desiccant filter is usually installed in the pipeline between the condenser and the thermal expansion valve (or capillary) to remove moisture and solid impurities in the refrigerant liquid to ensure the chiller refrigeration system.

Its structure is also the right angle and straight-through, etc., a commonly used desiccant is silica gel and molecular sieve.

Molecular sieves are highly hygroscopic and can be close to their saturation level after exposure to air for 24 hours, so they should be installed within 20 minutes once unpacked.

When the chiller refrigeration system has ice blockage, dirty plugging fault, or normal maintenance of the chiller, we should replace the dry filter to ensure its hygroscopicity, as well as the safe and stable operation of the chiller to meet the normal use needs of users.

Therefore, in order to prevent moisture from entering the refrigeration system, a dry filter must be provided to absorb the moisture that has entered the system.

Chapter 3: What’s the chiller working principle?

In most process cooling applications, a pumping system circulates cool water or a water/glycol solution from the chiller to the process.

This cool fluid removes heat from the process and the warm fluid returns to the chiller. The process water is the means by which heat transfers from the process to the chiller.

Process chillers contain a chemical compound, called a refrigerant. There are many types of refrigerant and applications depending on the temperatures required but they all work on the basic principle of compression and phase-change of the refrigerant from a liquid to a gas and back to a liquid.

This process of heating and cooling the refrigerant and changing it from a gas to a liquid and back again is the refrigeration cycle.

The refrigeration cycle starts with a low-pressure liquid/gas mix entering the evaporator. In the evaporator, heat from the process water or water/glycol solution boils the refrigerant, which changes it from a low-pressure liquid to a low-pressure gas.

The low-pressure gas enters the compressor where it is compressed to high-pressure gas. The high-pressure gas enters the condenser where ambient air or condenser water removes heat to cool it to a high-pressure liquid.

The high-pressure liquid travels to the expansion valve, which controls how much liquid refrigerant enters the evaporator, thereby beginning the refrigeration cycle again.

There are two types of condensers used in chillers: the air-cooled condenser and the water-cooled condenser.

An air-cooled condenser uses ambient air to cool and condense the hot refrigerant gas back down to a liquid. It can be located inside the chiller or can be remotely located outside, but ultimately it rejects the heat from the chiller to the air.

In a water-cooled condenser, water from a cooling tower cools and condenses the refrigerant.

the working principle of a chiller

the working principle of a chiller

Chapter 4: What are the different types of chillers?

There are different types of chillers in different terms:
But generally, a chiller is rated between 1ton to 1200 tons of cooling capacity.

There are three different types of chillers:(1) air chiller, (2) water chiller, and (3) evaporative condensed chiller.

There are four subcategories in each of the above categories for industrial chillers: (1) reciprocating chiller, (2) centrifugal chiller, (3) screw driven chiller (4) and absorption chillers.

There are many types of chiller in terms of industrial process:(1) plastic chiller, (2) laser chiller,(3) MRI chiller, (4) glycol chiller,(5) coolant chiller,(6) recirculating chiller.

The first three types are mechanical chillers which are powered by electric motors, steam, or gas turbines. An absorption chiller is powered by a heat source such as steam and uses no moving parts.

Chapter 5: Which refrigerant is used in chillers?

Refrigerant is a significant part in a chiller.

The chiller uses a refrigerant internally as its working fluid.

There are many refrigerant types are available. when selecting a chiller, the application cooling temperature requirements and refrigerant’s cooling characteristics need to be matched. Important parameters to consider are the operating temperatures and pressures.

There are several environmental factors that concern refrigerants, and also affect the future availability for chiller applications.

This is a key consideration in intermittent applications where a large chiller may last for 25 years or more. Ozone depletion potential (ODP) and global warming potential (GWP) of the refrigerant need to be considered. ODP and GWP data for some of the more common vapor-compression refrigerants (noting that many of these refrigerants are highly flammable and/or toxic)

Please refer below chat of kinds of refrigerants:

Types of Refrigerants

Types of Refrigerants

In addition, more and more chiller unit required environment-friendly refrigerant.

R22 refrigerant, However, due to its destruction of the ozone layer and high greenhouse effect, China has decided to phase out its use by 2030 according to relevant international agreements.

Therefore, more and more chilled refrigeration equipment is using the R204 alternative R404a. Although R404A and R22 have similar refrigeration performance, there are still many differences in practical use.

R404a refrigerant

R404a refrigerant

Replacing R22 with refrigerant R404a requires consideration of the following issues.

1. The biggest problem with using R404A instead of R22 is the problem of lubricating oil.

It is necessary to use PVE ester oil instead of mineral oil for R22. Ester lubricating oil has a high affinity with water and poor dehydration. Therefore, it should avoid contact with outside air during use.

After the container is opened, it should be used as soon as possible. It should be sealed and stored after use. Keep away from oxidant, strong alkali and strong acid.

Store in a well-ventilated place; avoid contact with skin and eyes when in use, and avoid inhalation of vapors and sprays.

2. The exhaust pressure of R404A refrigerant is about 1.2 times that of R22, and the mass flow rate is about 1.5 times that of R22.

The exhaust flow rate increases and the resistance increases. In general, the heat transfer capacity of the condenser is increased by 20% to 30% compared to R22.

3. The saturation pressure of R404A and R22 is different at the same temperature, so the action mechanism of R404A thermal expansion valve is different from that of R22.

At the same time, because the R404A refrigerant and lubricating oil have different compatibility with the sealing material, the expansion valve sealing material should also be changed accordingly.

Therefore, the R404A special expansion valve should be selected in the selection of the thermal expansion valve.

4. Since the saturation pressure of R404A is higher than R22, the design pressure of the pressure vessel in the system should be changed to ensure safety.

Such as liquid storage and gas-liquid separators. At the same time, the safety valve and fusible plug setting values ​​installed on the system components will also change.

Since the gas density of R404A is about 50% larger than that of R22 under the same exhaust gas amount, the pipe diameter selected is larger than R22 when piping design using R404A refrigerant.

5. For the same compressor, the current using R404A is greater than R22, so the wire diameter of the AC contactor, thermal relay and cable of the compressor should be adjusted.

In terms of system protection, the high-pressure switch setting is adjusted from the original 2.45 MPa to 2.7 MPa.

electrical contactor

electrical contactor

6. Since the saturation pressure of 404A is different from that of R22, the airtightness test pressure is greater than R22.

At the same time, the vacuum degree of the system is higher than R22, and the water content is lower than R22. The refrigerant should be charged in liquid form during charging to prevent changes in the R404A configuration.

7. R404A is a non-azeotropic mixture. The concentration of non-azeotropic mixture changes with temperature and pressure.

This brings certain difficulties to the production, debugging and maintenance of the refrigeration system. The effect, especially when the refrigerant leaks, the system refrigerant needs to be completely emptied and replaced, so as to ensure the proportion of each mixed component, and also achieve the design cooling effect, otherwise it will get worse.

8. Because R404A refrigerant and lubricating oil have good compatibility with water, the system’s requirements for moisture, residue and cleanliness are improved compared with R22 refrigerant.

R404A system moisture control and impurity control It is a more important indicator, and the corresponding filtering devices in the system should be changed.

Chapter 6: What is a chiller used for?

Chillers served a wide range of applications.

Chiller used in air conditioning:

In air conditioning systems, chilled water from the chiller is typically distributed to heat exchangers, or coils, in air handlers or other types of terminal devices which cool the air in their respective space.

The water is then recirculated to the chiller to be cooled again. These cooling coils transfer sensible heat and latent heat from the air to the chilled water, thus cooling and usually dehumidifying the air stream.

A typical chiller for air conditioning applications is rated between 15 and 2000 tons, and at least one manufacturer can produce chillers capable of up to 5,200 tons of cooling.

Chilled water temperatures can range from 35 to 45 °F (2 to 7 °C), depending upon application requirements.

When chillers for air conditioning systems are not operable or they are in need of repair or replacement, emergency chillers may be used to supply chilled water.

Rental chillers are mounted on a trailer so that they can be quickly deployed to the site. Large chilled water hoses are used to connect between rental chillers and air conditioning systems.

In this video, we learn how chillers, cooling towers, Air handling units, AHU, Rooftop units, RTU, fan coil units, FCU and ductwork together to form central plant HVAC systems.

This is chiller for air conditioning application.

Chiller used for industrial process

Chillers are also widely used for various industrial applications.

In industrial application, chilled water or other liquid from a chiller is pumped through process or laboratory equipment.

Industrial chillers are used for controlled cooling of products, mechanisms and factory machinery in a wide range of industries.

Chillers are often used in the plastic industries, injection and blow molding, metal working cutting oils, welding equipment, die-casting and machine tooling, chemical processing, pharmaceutical formulation, food and beverage processing, paper and cement processing, vacuum systems, X-ray diffraction, power supplies and power generation stations, analytical equipment, semiconductors, compressed air and gas cooling.

Chiller systems are also used to cool high-heat specialized items such as MRI machines and lasers, and in hospitals, hotels and campuses.

Chillers for industrial applications can be centralized, where a single chiller serves multiple cooling needs, or decentralized where each application or machine has its own chiller.

Each chiller system approach has its advantages. It is also possible to have a combination of both centralized and decentralized chillers, especially if the cooling requirements are the same for some applications or points of use, but not all.

Decentralized chillers are usually small in size and cooling capacity, usually from 0.2 to 10 short tons (0.179 to 8.929 long tons; 0.181 to 9.072 t). Centralized chillers generally have capacities ranging from ten tons to hundreds or thousands of tons.

Chilled water is used to cool and dehumidify air in mid- to large-size commercial, industrial, and institutional (CII) facilities. Water chillers can be water-cooled, air-cooled, or evaporatively cooled. Water-cooled chillers incorporate the use of cooling towers which improve the chillers’ thermodynamic effectiveness as compared to air-cooled chillers.

This is due to heat rejection at or near the air’s wet-bulb temperature rather than the higher, sometimes much higher, dry-bulb temperature.

Evaporatively cooled chillers offer higher efficiencies than air-cooled chillers but lower than water-cooled chillers.

Water-cooled chillers are typically intended for indoor installation and operation, and are cooled by a separate condenser water loop and connected to outdoor cooling towers to expel heat to the atmosphere.

Air-cooled and evaporative cooled chillers are intended for outdoor installation and operation. Air-cooled machines are directly cooled by ambient air being mechanically circulated directly through the machine’s condenser coil to expel heat to the atmosphere.

Evaporative cooled machines are similar, except they implement a mist of water over the condenser coil to aid in condenser cooling, making the machine more efficient than a traditional air-cooled machine.

No remote cooling tower is typically required with either of these types of packaged air-cooled or evaporatively cooled chillers.

Chapter 7: How to size a correct chiller for your business?

Chillers are idea refrigeration system not only for air conditioning also for industrial applications.

But how to select a correct chiller for your business? This comes to the first important point.

With rich experience of sizing chiller cooling capacity, TopChiller having below formula for your reference:

There is an easy way to follow a formula for determining the size of chiller you require. However, there are a few factors you must know before you take actions:

A.The incoming water temperature
B.The water temperature you required
C.The chilled water flow rate

General sizing formula:

Calculate Temperature Differential (ΔT°F) ΔT°F = Incoming Water Temperature (°F) – Required Chill Water Temperature
Calculate BTU/hr. BTU/hr. = Gallons per hr x 8.33 x ΔT°F
Calculate tons of cooling capacity Tons = BTU/hr. ÷ 12,000
Oversize the chiller by 20% Ideal Size in Tons = Tons x 1.2

You have the ideal size for your needs
For example, what size chiller is required to cool 10 GPM from 72°F to 48°F?

ΔT°F = 72°F – 48°F = 24°F
BTU/hr. = 10 gpm x 60 x 8.33 x 24°F = 119,952 BTU/hr.
Ton Capacity = 119,952 BTU/hr. ÷ 12,000 = 9.996 Tons
Oversize the chiller = 9.996 x 1.2 = 11.9952
A 11.9952 or 12-Ton chiller is required.

In the refrigeration industry, we must know there are different units as: Ton, Kcal/H, Btu/H, KW, HP…, but how to convert these units between?

Chiller Cooling Capcacity Conversion

Chiller Cooling Capacity Conversion

Chapter 8: How do you maintain a chiller system?

To buy a good quality chiller is important but how to maintain a chiller is another important thing.

There are some tips for you on how to maintain your chiller:

A. Chiller compressor
The compressor acts as the pump for the chiller’s refrigerant around the system by using differences in pressure to move the liquid through the system. The key things to discuss with your engineer or check yourself are:

The compressor suction temperature and pressure
The compressor discharge temperature and pressure
Compressor refrigeration oil level and pressure
Current-voltage and current levels

B. Chiller evaporator
The next component to check is the evaporator, which has the function of taking the heat absorbed from your process. Depending on the type of chiller, either air cooled or water cooled, these checks will be slightly different. Again, the main points to cover are:

Evaporator fluid or air Inlet temperature and pressure
Evaporator fluid or air Outlet temperature and pressure
Evaporator refrigeration inlet and outlet temperature
Evaporator insulation Condition

C. Chiller condenser
The final of the three components should be the condenser, which functions as remove the heat transferred into the refrigerant by the compressor as described above.

Again, as with the evaporator, there are two types of condenser, air cooled and water cooled, which will slightly alter your checks, which will include:

Air intake and exhaust temperature
Refrigeration inlet and outlet temperature
Condensing fan motor currents, noise and vibration
Condenser coil condition

Chilled water systems remove heat from buildings by transferring heat from the air into chilled water forced through piping, which circulates through chilled water loops, returning the heated water to the chiller, where refrigerant removes heat from the water.

Rarely seen in residential applications, chilled water systems are common in commercial and industrial process settings.

Chiller water system design and operation offer specialized challenges to maintenance staff, especially as the system can weigh several hundred tons and include miles of piping and heat transfer tubing.

Chilled water systems also place high demands on electrical load, and even a small problem can reduce system efficiency and increase operating costs.

Remote Monitoring and Daily Logs

Remote monitoring technology allows maintenance staff to monitor large equipment daily, instead of manually checking systems every week or month. Records from remote monitoring allow you to track chiller temperature, pressure, fluid levels, and flow rates consistently.

Comparing this daily log to the manufacturer’s chilled water system design guide allows for the early detection and correction of equipment issues.

Cleaning Tubing

Contaminants such as minerals, scale, algae, and mud can build up in chilled water system tubing, reducing heat transfer efficiency. Approach temperatures may indicate contaminated tubing, as higher approach temperatures indicate a drop in heat transfer efficiency.

Tubes should be cleaned every three years in closed systems. For open systems, periodic inspection is required. Follow the guidelines in the chilled water system design and operation manufacturer’s guide.

Tube cleaning includes mechanical and chemical cleaning processes. Mechanical cleaning requires physically brushing the interior of the tubing to remove mud, sludge, and algae, and then flushing the tubes.

Chemical cleaning removes scale, and must be tailored to match your local water conditions. Mechanical cleaning is necessary after chemical cleaning to remove loosened scales.

Newer chiller models have taken much of the work out of cleaning tubing. Such systems include automatic tub brushing, where small, nylon brushes flow through the tubes.

Older systems can be retrofitted to include integrated cleaning systems, a cost that typically pays for itself within two years.

Condenser Water Issues

Condenser water loops transfer water to open cooling towers or similar systems, allowing heat to escape into the atmosphere. Exposure to open air increases the risk of contaminants capable of causing scale, corrosion, and biological growth. All such contaminants can impair heat transfer and decrease system efficiency.

Loops should be inspected regularly for water quality issues and evidence of corrosion, and condenser water should be treated as needed to prevent the accumulation of contaminants.

Non-Condensable Contamination

Air and moisture can leak into chillers, causing a decrease in system efficiency and the risk of corrosion and rust. As little as 1 psi of air in a condenser reduces system efficiency by three percent. Moisture can create corrosive acids that damage motor windings and rust the inside of the chilled shell.

Regular purging controls non-condensate contamination, and all system strainers should be cleaned every three months to maximize their ability to maintain clean water.

Compressor Oil

Once a year, maintenance staff should take a sample of the system’s lubrication oil while the chiller is operating. This sample should be sent to the lab for spectrometric analysis. Low-pressure systems will require more frequent sampling.

Compressor oil should only be replaced if the lab results indicate the need. Oil filters should be checked for pressure drop, and replaced if the oil is replaced.

New magnetic-bearing frictionless chillers have eliminated oil from their systems.

Maintaining Proper Refrigerant Charge

A water chilling system’s ability to cool its surrounding environment depends on how much refrigerant moves through the compressor, so maintaining the level of refrigerant charge recommended by the manufacturer is important. When levels drop, the compressor works harder to compensate.

Leaks, air, moisture, and oil can all adversely affect refrigerant. It’s not unheard of for refrigerant to contain ten percent oil in old model chillers, resulting in a twenty percent decrease in efficiency.

Water Temperature and Flow Rate

The temperature of entering condenser water affects system efficiency, with lower temperatures improving system operations. Chilled water flow rates are also an issue. Most chilled water system design and operation manuals recommend a flow rate of three to twelve feet per second.

Any less, and system efficiency drops. Any higher, and you increase noise, vibrations, and erosion risks.

Starter and Motor Maintenance

All starters and motors associated with the system should be checked regularly for the following:

– Inaccurate safety and sensor calibrations on microprocessor controls
– Hot spots and worn contacts on electrical connections, wiring, and switchgear
– Inadequate ground and wiring-to-wiring insulation resistance on electrical motor wiring
– Refrigerant leaks around open drive motor shafts
– Dirty or clogged motor cooling air vents.

 

Chapter 9: Why TopChiller can be your reliable chiller supplier?

TopChiller having been in chiller industry since 1999. With rich experience in chiller systems, we have a complete product line of various chiller models from small cooling capacity 1Ton to middle size 200Ton then to large size 800/100Ton.

Our chillers are commonly used in air conditioning, commercial and industrial applications.

Looking for high quality and best cooling performance chiller manufacturer? You are coming to the right place.

TopChiller will always provide a total chiller solution for your business.

If you have any chiller inquiry, please contact TopChiller refrigeration expert go get a professional solution.

Conclusion

TopChiller offers many chiller solutions including water chillers, air chillers, oil chillers, glycol chiller, packaged chillers and screw chillers from 0.5Ton to 500Ton cooling capacity and temperature controlling range from 35℃ to -30℃

Our many different kinds of chillers are available for all of your chilling or cooling needs. While other chillers brand wears out, our chillers wear in. Contact TopChiller now!

 

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