Top Quality: Water Cooled Screw Chiller Manufacturer in China | Geson Chiller
Choosing the right cooling system for an industrial or commercial building is an important decision. Your choice will determine how efficient the cooling you can get, as well as the energy it takes to achieve your desired cooling effect. For large industrial plants and buildings, the wrong choice of system to use could mean thousands of dollars in profit loss. Be smart about your decision. Use this guide to help you pick the right chiller system to use.
What Is A Water Cooled Screw Chiller?
A water-cooled screw chiller is a type of chiller system that uses recirculating water from a cooling tower in order to facilitate heat exchange. Once the water is processed from a source, it goes through the condenser and cooling tower before it is emitted as cool air into the room or building.
This type of screw chiller is one of the most popular types because it is durable and is powerful enough to cool buildings and industrial spaces.
How Does This Water Cooled Screw Chiller System Work?
A water cooled screw chiller is one of two types of screw chillers that are available for industrial use. As the name implies, it uses water from a source and accessed with a pump – or that which is processed to create a cooling effect to a building or room.
Unlike centrifugal compressors, this chiller system relies on a screw compressor that enables it to achieve part-load efficiencies. It is a sustainable refrigerant option capable of producing up to 5500 tons of cooling efficiency.
water cooled screw chiller work
Which Is Better: Air Cooled Chiller vs Water Cooled Chiller?
The main difference between air and industrial water cooled screw chiller lies in the method at which heat is rejected from the refrigerant to achieve cooler temperature. In general, water cooled chillers are considered a better option than the air-cooled ones.
First and foremost, relying on ambient air puts the system at the mercy of the fluctuating ambient temperature. The use of water, however, provides more consistent cooling. It is also more energy-efficient to use and cheaper in the long run. This makes it efficient to use on high-rise and large buildings.
Air Cooled Chiller vs Water Cooled Chiller
How Efficient Is Water Cooled Screw Chiller?
Water cooled screw chiller is far more efficient than the air cooled ones. The presence of a cooling tower makes this possible. The efficiency of the water cooled screw chiller can be attributed to the ability to condense water better than the ambient air. This means that the system would have to use less energy in order to achieve the desired cooling effect.
The overall energy usage for this type of system is approximately around 10 percent. On the other hand, the energy usage for air-cooled chillers is at 60 percent.
What Is The Difference Between Water Cooled Screw And Scroll Chiller?
Screw and scroll chillers are two different types of systems with one goal in mind: to produce cooling effect. When choosing which system to use, it is important to know the difference between the two.
Screw chillers, particularly water-cooled screw chillers, are an excellent cooling system that is installed in high-rise buildings and other industrial applications. It is a water-based cooling system that uses two rotating helical screws in order to produce the needed amount of pressure to facilitate the vapor-compression refrigeration process. It is compact and operates quietly since it has fewer parts involved.
On the other hand, a scroll chiller operates using a pair of interleaving scrolls. These scrolls are designed to compress fluids within the system, such as the refrigerant. It is made up of several components like the control panel, flow switches, drain valves, evaporators, expansion valves, condensers, and subcoolers. Most scroll chillers are also compact in size.
Is Water Cooled Screw Chiller Environment Friendly?
Yes. This type of system is known for its high efficiency. In terms of energy usage, it is more energy saving than air cooled chillers. This is also the reason why they are quire durable and long lasting. While the cost of initial investment for the installation of water cooled chillers are higher, it is compensated with the fact that they can last for many years and provide energy savings.
Refrigerant Is Used In a Water Cooled Chiller System
How Do You Choose Cooling Tower For Water Cooled Screw Chiller?
There are three important temperature levels you need to keep a close eye on when choosing a cooling tower: hot water temperature, cold water temperature, and wet bulb temperature. The hot water temperature is that which enters the tower. The cold water temperature is that which leaves the water while the wet bulb temperature refers to the prevailing temperature of the geographic region where the tower is located.
Approach is the term used to refer to the difference between the temperatures of the water source as it enters the tower versus the temperature of the water once it has left the tower. This is a crucial determiner of the effective of the heat exchange process.
To choose the right cooling tower, mechanical efficiency should be given priority. This refers to the amount of fan power needed to circulate ambient air within the cooling tower. The range – or the difference in temperature between hot and cold water – is also crucial as it will impact energy usage.
Finally, you must also choose a tower based on the size. To choose the right size of tower, you must take into account the heat load, range, approach, and the ambient temperature.
Water Cooling Tower
Can You Use Water Cooled Screw Chiller for HVAC?
Yes. Water cooled HVAC Chiller is also known as water cooled condenser. The system functions in such a way that heat that was brought into the system by the refrigerant is rejected once it enters the evaporator. Water is used in order to remove heat and cool the refrigerant from the compressor. This is achieved by pumping counter-flow water and introducing that into the condenser.
How Do You Troubleshoot Water Cooled Screw Chiller?
The best way to troubleshoot water cooled screw chiller is to first analyze the problem. There are common problems such as refrigerant leak, lack of power source, or insufficient cooling. Each of these problems has a different cause and you can only troubleshoot it when you know where the problem lies.
What Are Common Problems Of Water Cooled Screw Chiller?
A water cooled chiller consists of many parts. When any one of these components fails, it causes a problem to the entire system.
Insufficient cooling is one of the main problems from a water cooled screw chiller. This can be caused by a number of factors such as refrigerant leak, high ambient temperature, or a clogged air filter. Next common problem that you might encounter with this type of chiller is insufficient fluid flow. This happens when the pump fails, or the fluid filter is blocked. Whatever the cause, it could result to a poor chiller performance.
In some cases, the chillers can be corroded. Corrosion happens due to a poor water flow and it could result to a poor overall performance for the chiller.
Whenever you experience any of these problems, it is best to consult an expert right away. They will be able to address the source of the problem so you can get better cooling performance from the system.
What Is The Working Principle Of Water Cooled Screw Chillers?
The working principle of water-cooled chillers is the same as any other type of chillers. Its main component is a screw compressor that is responsible for introducing the refrigerant into the evaporator before it is passed into the cylinder. With the help of the compressor, the refrigerant will turn into vapor wherein it is compressed into high-pressure gas and temperature.
The high temperature and high-pressure refrigerant gas will pass through the condenser to undergo heat exchange. The heat transfer enables the water to achieve that “cooling” effect. It passes through numerous other processes and recirculates again and again in order to continue producing chilled water to achieve a desired cooling effect.
water cooled screw chiller working principle
What Type Of Chiller Is Best?
There is not one correct answer to this. It will depend on the purpose for installing the chiller.
For industrial applications, water cooled screw chillers are considered the best option because of its higher efficiency rating. Commercial and industrial business owners prefer this type of chiller system because it uses less energy to operate. At the same time, it is more effective in terms of cooling larger spaces such as industrial buildings, factories, and high-rise buildings.
It is also important to consider the physical location where the system is to be installed. The type of chiller you choose will require a specific set of guidelines to be met prior to installation. This could dictate what type of chiller system can be installed, depending on what conditions are met.
chiller system basics
The TR (ton of refrigeration) is one of the most important factors to consider when choosing the cooling towers of a water cooled chiller. It varies from one cooling tower to another based on the size of the latter. In general, the approximate TR capacity of most towers is at 12,000 BTU/h or equivalent to 3.5KW in refrigeration capacity.
How Is Water Cooled Screw Chiller Efficiency Calculated?
You can calculate the water-cooled screw chiller efficiency by using the HVAC efficiency formula: EER = Btu/hr cooling watts consumed. Simply replace the formulas with the actual values of the system performance. The SEER standards for domestic chillers is anywhere from 13 to 14. Make sure to check this range to determine if the efficiency rating of your system is within this range.
Water-cooled chillers run efficiently and this enables them to operate continuously. Unlike air-cooled chillers that must be switched off, the water-cooled chiller systems can run continuously as long as there is a sufficient supply of water from a designated source.
What Is The Correct Water Temperature For Water Cooled Screw Chiller?
The ideal temperature for chilled water is anywhere from 5 to 7 degrees Celsius. This will vary depending on the type of application required for the chiller system. In the event that there are certain parts that need repair or replacement, emergency chillers can be used in order to supply cooled water to the system.
Chiller Temperature Setting
Why Choose Geson Chillers Water Cooled Screw Chiller?
Geson Chillers has over 15 years of experience in the manufacture of chiller systems. We are one of the best in the industry in terms of delivering quality chillers for industrial use. Whether you are looking for screw or scroll chillers, you can find a product that suits your needs.
We also provide you with customization options. We are able to customize our chillers to suit your business’ unique needs. This is how you can get most value for your money and enjoy significant return of investment because the system is developed specifically for your needs.
What Refrigerant Type for the Water Cooled Screw Chiller?
There are five types of refrigerants according to their chemical composition:
- Unsaturated hydrocarbon refrigerant;
- Saturated hydrocarbon refrigerant;
4. Inorganic compound refrigerant;
- Azeotrope refrigerant.
In these five categories, water-cooled screw chillers usually use R-22 type refrigerant, and the chemical composition is difluoro-chloromethane. Which is mainly used in medium and low temperature commercial refrigeration, catering refrigeration, supermarket display cabinets, residential and commercial air conditioning systems.
What are the refrigerant charging methods for water-cooled screw chillers?
First ensure the whole water cooled screw chiller working system is finished tested strictly, and there are no leakage in the unit.
Start to fill the refrigerant liquid. You can use two method to charge refrigerant.
- Fill the refrigerant by the bypass hole of the screw compressor discharge valve.
Inject the refrigerant liquid into the refrigeration system directly. This method has its advantage that it is fast and safe. This method mostly used when there is no refrigerant in the unit, and the liquid vacuum is evacuated.
2. From thebypasshole of the compressor suction valve
The method use the bypass hole of the screw compressor suction valve.
Freon gas if filled through the suctio valve.
The compressor should started first.
This method is suitable for the situation that the system is insufficient and needs to be refilled.
What Other Screw Chillers Do Geson Water Cooled Screw Chiller Offer?
There are two main types of screw chillers available at Geson Chillers: air-cooled and water-cooled screw chillers. Therefore, we have air-cooled chillers if you need one, or if you think it would be a more suitable option for your needs.
We also provide air-cooled scroll chiller with up to 60RT capacity. This one does not require a cooling tower. Most of the chiller systems we offer come with various applications such as the chemical processing, pharmaceutical, laser, food and beverage, HVAC, hospital, and medical industries.