Water Cooled Screw Chiller

Shell and Tube Evaporator

2.3 Condenser

The condenser for water cooled screw chiller is water-cooed type shell and tube for high heat exchange efficiency and good stability.Its function is to cool down the refrigerant steam released from the compressor into a liquid or gas-liquid mixture.

 
Water-cooled type Shell and Tube Condenser

2.4 Controller Panel
Tongwei chillers use Integrated PLC control system with human-computer interface and big LED touch screen panel.

PLC Controller Panel

3.How I Can Choose The Right Water Cooled Screw Chiller?

There are four important chiller specifications you need consider when you choose a chiller for your application :the cooling capacity for chiller ,the voltage required for operation, the associated pump horsepower and flow rate (contact us for custom selection), refrigerant, and the evaporator type.

3.1 Calculate Right Cooling Capacity For Chillrs
One of the most frequently ask about how we can know the cooling capacity for chillers. Let’s see the below formula.

3.2 Power

Different countries and regions have different standards for industrial electricity, the common power supplies are 208-230V, 380-420V,440-480V,50Hz or 60Hz, 3phase.

Such in Philippines ,the power supply is 220V 60HZ 3PH , 380V 60HZ 3PH ,460V 60HZ 3PH;

in Singapore and Malaysia ,the power supply is 415V 50HZ 3PH;

in Mexico ,the power supply is 220V 60HZ 3PH;

In USA ,the power supply is 208V 60HZ 3PH;575V 60HZ 3PH;480V 60HZ 3PH and so on

3.3 Water Pump

When you decide the capacity/tonnage of the chiller, we will recommend you the suitable pump in KW,which standard water pump is about 2 bar .If you need more high water pressure , please us when you inquiry.

3.4 Refrigerant

R22, R407C, R404A, R134A are optional choices.

R22: good cooling effect, but R22 is considered a powerful greenhouse gas, so it’s forbidden in most countries.

R407C: a good replacement for R22, good cooling effect.

R404A: suitable for application that requires low temperature(below -10°c).

R134A: a non-flammable gas used primarily as a “high-temperature” refrigerant, suitable for air-cooled chiller working at a high ambient temperature above 50℃.

3.5 Evaporator Choose

Air cooled screw chiller generally uses one evaporators: just is shell and tube heat exchanger.(See Above 2.2)

Shell and tube type evaporator, which requires an additional water buffer tank to connect.

3.6 Buffer Water Tank Capacity Choose

Buffer tank’s capacity can be customized according to specific needs. It can buffer a larger heat load, store more chilled water .

304 Stainless Steel Water Tank 

4.How Choose Water Cooling Tower For Your Water Cooled Screw Chiller?

There are three important temperature factors you need to consider when choosing a cooling tower for water cooled screw chiller: inlet hot water temperature, outlet 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.

so to find out how to choose a cooling water tower with sufficient cooling capacity, you should understand what circumstances require the use of a cooling tower. Please find the below water cooling tower is suitable for water cooled screw chiller :

Cooling Capacity of Chiller                            Water Cooling Tower Capacity 

70HP(230KW/65 Ton)                                        80 Ton

80HP(250KW/70 Ton)                                        100 Ton

90HP(300KW/85 Ton)                                         100 Ton

100HP(350KW/100 Ton)                                     125 Ton

110HP(375KW/110 Ton)                                      125 Ton

120HP(415KW/117 Ton)                                      150 Ton

140HP(470KW/130 Ton)                                       175 Ton

160HP(500KW/140 Ton)                                       175 Ton

170HP(560KW/160 Ton)                                        200 Ton

180HP(590KW/165 Ton)                                        200 Ton

Water Cooling tower

5.What is the Difference Between Air Cooled Screw Chiller and an Water Cooled Screw Chiller

Air-cooled and water-cooled screw chillers are both types of chillers used for cooling applications in various industries.
The main difference between air cooled screw chiller and water cooled screw chiller is condenser :
The condenser of an Air-Cooled Screw Chiller is cooled by the ambient air,which the heat generated during the cooling process is dissipated into the surrounding air;
Water Cooled Screw Chiller with a shell and tube water-type condenser that is attached to a cooling tower and is typically used in medium and wide installations where water is available.So Water cooled screw chiller need connect with water cooling tower and water cooling pump outside , the installation is more trouble than air cooled screw chiller .
But if your ambient temperature is very high above 50℃,we suggest you use water cooled screw chiller ,as air cooled screw chiller may consume more energy to achieve the same cooling capacity due to the limitations of air as a heat exchange medium and water cooled screw chiller uses constant water source for more stable and efficient heat dissipation,so in high ambient temperature , water cooled screw chiller is more energy-efficient and better choice for your application .

Air Cooled Screw Chiller 

6.Industrial Applications of Water Cooled Screw Chiller

Water-cooled screw chillers are very popular refrigeration system that can provide steady and reliable water cooling sources for both industrial and commercial usage.
Water cooled screw chillers are also widely used in plastic industry.food industry and Cement/ Concrete Cooling.

6.1 Plastic Industry 

Water-cooled screw chillers are also widely used in plastic processing and plastic industry including plastic injection molding, plastic extruders, and extrusion lines, blowing molding machines.
The function of using an water-cooled screw chiller is to provide the cooling water flow rate for cooling the plastic mold temperature down to make sure the product quality and production efficiency.

Water Cooled Screw Chiller For Plastic Industry  

6.2 Food Industry 

Water cooled chiller chillers are important in the food industry to maintain temperature control, preserve quality, support various production processes, and comply with regulations.

Water Cooled Screw Chiller For Food Industry

6.3 Cement /Concrete Cooling

Cement production involves a series of chemical reactions that generate significant amounts of heat.Cement is usually mixed with water to from the material known as concrete whose temperature is to a great extent determined by the water used in the chemical combination of cement aggregates and water.