Prices of Chiller Evaporators
An evaporator, which functions as a heat exchanger, is a component for lowering the ambient temperature. The operating mechanism of this air conditioning system involves a refrigerant fluid in the evaporator coil. This fluid absorbs heat from its surroundings and boils at a temperature lower than the ambient environment. In general, the evaporator reduces the temperature of the tubes and fins, turning the refrigerant from a liquid into a gas. Evaporators are commonly used in chillers and are considered a part of their operation. You can follow the link to purchase chillers.
 
HiWater has years of experience in producing and supplying evaporators in a range of capacities. To learn more about evaporator prices, you can call +982188816800.
  
 Prices of Shell-and-Tube and Plate Chiller Evaporators:
5-Ton Shell-and-Tube Evaporator
5-Ton Shell-and-Tube Evaporator
20-Ton Shell-and-Tube Evaporator
20-Ton Shell-and-Tube Evaporator
10-Ton Shell-and-Tube Evaporator
10-Ton Shell-and-Tube Evaporator
30-Ton Shell-and-Tube Evaporator
30-Ton Shell-and-Tube Evaporator
 
Examples of Evaporators Built by HiWater:
 
Chiller Evaporator
Chiller Evaporator
  
Categories of Evaporators
 Shell-and-Tube Chiller Evaporators
This product, also referred to as a water-based evaporator, consists of a shell containing several tubes, typically made of carbon. Water surrounds these tubes, and the shell facilitates flow without allowing direct contact between the tubes. In this system, the refrigerant evaporates and absorbs heat from the water through the outer walls of the tubes, cooling the water. These evaporators are known for their durability and ability to withstand high temperatures. Shell-and-tube evaporators are widely used in refrigeration systems and other industries, available in various models and capacities.
  
Plate Chiller Evaporators
Plate evaporators work in a way that is very similar to shell-and-tube models, but they use a series of thin plates to exchange heat efficiently without direct interaction between the fluid and the refrigerant.
 
Compared to shell-and-tube evaporators, plate models are simpler to clean and maintain. Advanced designs allow the plates to be easily separated and reassembled.
 
Additionally, if a plate is damaged, it can be removed and repaired while the rest of the system remains operational.
 
Plate evaporators are generally more efficient than shell-and-tube evaporators but may result in higher pressure drops.
 
Heat transfer in these systems occurs through a water medium, cooling the water inside the evaporator.
 
The chilled water produced by plate evaporators is transported to air handling units, fan coils, and industrial machinery through pumps. The temperature of the water rises due to heat exchange.
 

Benefits of Plate Evaporators:

Simple maintenance and cleaning due to detachable plates
Adjustable evaporation by adding or removing plates
Quick and simple installation
Compact design, saving space
High product quality achieved through a gradual and even evaporation process
A wide range of heating modes

 
Uses of Plate Evaporators:
These evaporators are used in heating systems for swimming pools, domestic hot water, and heating systems. They are also used in cooling systems such as chillers.
 
Moreover, plate evaporators are used for processes that require slow to moderate evaporation rates.
 
They are also a preferred choice for applications where temperature-sensitive products are involved.
 

Factors Affecting Evaporator Performance
Fluid Type: The type of fluid plays a critical role in determining its evaporation rate and the appropriate material for the coil.
Pressure Loss: To reduce the pressure difference between the inlet and outlet of the evaporator, sufficient space is required to facilitate fluid circulation.
Temperature Difference: The temperature gap between the fluid and the surrounding environment of the coil must be large enough to ensure the complete evaporation of the liquid inside the coil.
 
 Cold Storage Evaporator Types
Every cooling system used in cold storage consists of four main components: a condenser, a compressor, an expansion valve, and an evaporator. Refrigerants circulate through these components, enabling the cooling operation in the cold storage. To this end, the compressor and condenser are typically mounted on a chassis, and the refrigerant flows through the four main components. In this way, the cold air inside the storage unit is generated by the evaporator, which absorbs heat from the space and transfers it outside using the refrigerant.
 
 Cold Storage Evaporator Fans
Cold storage evaporator fans are usually equipped with axial suctions, regardless of whether they are designed for sub-zero or above-zero temperatures. Axial fans move large volumes of air and produce a direct airflow. When purchasing an evaporator, it is important to pay attention to the fan’s airflow capacity.
 
 Sub-Zero Cold Storage Evaporators
This type of evaporator operates at temperatures as low as -45°C. The fin spacing in sub-zero evaporators is narrower than that of above-zero models. These evaporators are used for freezing items like meat and vegetables.
 
 Above-Zero Cold Storage Evaporators
Above-zero evaporators are used for storing fruits that do not require freezing.
 
 Freezing Tunnel Evaporators
A freezing tunnel evaporator preserves the quality and freshness of various products. The freezing tunnel evaporators and industrial cold storage evaporators are different in terms of fin spacing.
  
Differences Between Sub-Zero and Above-Zero Cold Storage Evaporators
Although these evaporators look similar, the key difference lies in the spacing between the fins. Above-zero evaporators have fin spacing of 0.8 cm but sub-zero evaporators have fin spacing of 0.10 cm.
 
 Frost Formation or Freezing in Evaporators
Frost forms on evaporators when moisture in the air condenses onto the coils as droplets and then freezes. This frost reduces both heat transfer efficiency and airflow. To address this issue, a defrosting process is used, which can be done electrically or mechanically.
 
 Industrial Applications of Evaporators
Evaporators are used in two main ways in industrial applications: In the first method, the fluid intended for evaporation is transferred into the coil. Under pressure slightly above atmospheric levels, the fluid inside the coil absorbs heat from the hot fluid circulating around the coil through heat exchange, which causes the refrigerant to evaporate from a liquid to a gaseous state.
 
In general, this method aims to evaporate the fluid within the coil and is used in industries like food production to increase concentration or in pharmaceuticals to remove moisture and increase shelf life.
 
In the second method, the purpose is to cool the fluid surrounding the coils. This process involves circulating a refrigerant with a low temperature inside the coils, while a high-temperature fluid, such as air or water, flows around them. During this process, the refrigerant absorbs heat from the air or water, causing the fluid to release its heat, resulting in a temperature reduction or cooling. This type of evaporator application is widely used in industries like chiller production, and cold storage facilities.
 
How the Evaporator Works
In a compression refrigeration system, the evaporator comes after the expansion valve. Therefore, the refrigerant passes through the expansion valve before entering the evaporator. The refrigerant’s pressure is largely reduced at this stage, which lowers its boiling point, ensuring that it performs efficiently when it reaches the evaporator.
 
When the refrigerant enters the evaporator’s tubes, it exchanges heat with the surrounding fluid. The heat transfers from the hotter fluid to the cooler refrigerant. This process occurs without the two fluids mixing or directly touching each other. The result is that the temperature of one fluid decreases and it cools down, while the other fluid’s temperature increases and undergoes a phase change, from liquid to gas.
  
Industrial Evaporator
An industrial evaporator is a type of heat exchanger in which heat is transferred between two fluids without them coming into contact or mixing. To this end, the heat moves from the hotter fluid to the cooler fluid. To explain in more detail, an industrial evaporator consists mainly of two parts: the shell and the tubes.
 
Therefore, two fluids with significantly different temperatures enter the system during operation; one flows inside the tubes and the other surrounds the tubes. The fluid inside the tubes, which is at a lower temperature and pressure, absorbs the heat from the surrounding fluid through the tube walls. This causes the refrigerant to reach its boiling point and evaporate into gas.
 
Uses of Industrial Evaporators
Industrial evaporators are used in industrial settings for two primary purposes:

If the goal is to vaporize a liquid, the liquid is sent through the tubes, while a high-temperature fluid (either liquid or hot vapor) flows around the tubes. Inside the tubes, the refrigerant absorbs heat from the hot fluid via heat exchange through the tube walls, causing it to evaporate from liquid to gas.
Evaporators are also used for cooling. In this regard, refrigerant (such as Freon gas) enters into the tubes, and air or water circulates around the tubes. If water is used, the evaporator type is shell-and-tube, while if air is used, the evaporator is fan-assisted. The refrigerant absorbs heat from the water or air, which lowers the temperature of the surrounding fluid, and increases the refrigerant’s temperature.

If you carefully review the text, you will find that the refrigerant or fluid operates at pressures equal to or below atmospheric pressure. This occurs because the refrigerant has the unique characteristic of absorbing heat from a fluid at ambient temperature when under low-pressure conditions. In industrial evaporators, this is achieved through the expansion valve, allowing the refrigerant to absorb minimal heat and reach its boiling point, resulting in evaporation.
 

What Is a Chiller?
A chiller is a device used to lower the temperature of a fluid for cooling purposes.
The chiller operates through a thermodynamic process that removes heat, cooling the fluid (typically water) in the process.
In general, a chiller is a large system composed of various components, with the evaporator being one of the crucial parts. The heat exchange between the refrigerant and the fluid (water) occurs in this component, resulting in the cooling of the water.
The fluid cooled by the chiller can then be used in various industrial or residential settings. For example, in a residential complex, the cooled water is pumped to consumer units such as air handling units (AHUs) or fan coil units for use.
In industry, the chilled water is often used to cool equipment or keep devices at a low temperature.
Chillers are highly versatile in terms of both their structure and function, allowing them to cater to a vast array of applications. Along with these qualities, they also offer numerous benefits such as a wide range of capacities and sizes, excellent efficiency, low energy consumption, reduced noise levels, and more. As a result, chillers have become the most essential and widely used equipment in many industries.
 

Evaporator Purchase
For information on purchasing an evaporator and free expert advice to help you make the right choice, please call us at +982188816800.