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Schlee (China) Refrigerating Equipment Manufacturing Co.,Ltd

Add:Jupu Road, Pukou Development Zone, Nanjing City, Jiangsu Province, China

Contact us:Annie

Tel:+86-25-66615565

Fax:+86-25-84485651

Mob:+86-18013811852

E-mail:world@chinaschlee.com

Web Site:www.schleechiller.com

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Water Cooled Screw Chiller How To Choose
- Oct 16, 2017 -

How to buy spiral water chiller

1. The main control parameters of the screw water chiller are refrigerating performance coefficient, rated refrigerating capacity, input power and type of refrigerant. 

2. The selection of chiller shall be considered according to the cold load and use. For the cooling system with long working conditions of low load, it is appropriate to select a multi-head piston compressor or screw compressor unit for easy adjustment and energy saving.

3. When choosing cold water units, the units with high performance coefficient are given priority. According to the statistics, the normal water chiller operating time is about 1/4 of the total operating time under 100% load. The operating time ratio of 100%, 75%, 50% and 25% of total operating time was roughly 2.3%, 41.5%, 46.1%, 10.1%. Therefore, it should give priority to the model of the efficiency curve when choosing the chiller. At the same time, the adjustment range of the chiller load should be considered in the design selection. The multi-engine screw cold water chiller has excellent load performance and can be selected according to the actual situation.

4. When selecting the chiller, the conditions of the nominal working conditions should be paid attention to. The actual cooling amount of the chiller is related to the following factors:

A) water temperature and flow rate of cold water;

B) water inlet temperature, flow rate and fouling coefficient of cooling water.

5. When choosing the chiller, pay attention to the normal working range of the model unit, mainly the current limit of the main motor is the current value of the shaft power under the nominal working condition.

6. Should be paid attention to in the design: under nominal working condition of flow rate, outlet temperature of cold water should not be more than 15 ℃, outdoor dry bulb temperature of air cooling unit should not be more than 43 ℃. If you have to exceed the above range, you should know whether the use range of the compressor is permissible and whether the power of the main motor is sufficient.

1. The main control parameters of the chiller are the performance coefficient of refrigeration, rated refrigerating capacity, input power and type of refrigerant.

2. The selection of chiller shall be considered according to the cold load and use. For the cooling system with long working conditions of low load, it is appropriate to select a multi-head piston compressor or screw compressor unit for easy adjustment and energy saving.

3. When choosing cold water units, the units with high performance coefficient are given priority. According to the statistics, the normal water chiller operating time is about 1/4 of the total operating time under 100% load. The operating time ratio of 100%, 75%, 50% and 25% of total operating time was roughly 2.3%, 41.5%, 46.1%, 10.1%. Therefore, it should give priority to the model of the efficiency curve when choosing the chiller. At the same time, the adjustment range of the chiller load should be considered in the design selection. The multi-engine screw cold water chiller has excellent load performance and can be selected according to the actual situation.

4. When selecting the chiller, the conditions of the nominal working conditions should be paid attention to. The actual cooling amount of the chiller is related to the following factors:

A) water temperature and flow rate of cold water;

B) water inlet temperature, flow rate and fouling coefficient of cooling water.

5. When choosing the chiller, pay attention to the normal working range of the model unit, mainly the current limit of the main motor is the current value of the shaft power under the nominal working condition.

6. Should be paid attention to in the design: under nominal working condition of flow rate, outlet temperature of cold water should not be more than 15 ℃, outdoor dry bulb temperature of air cooling unit should not be more than 43 ℃. If you have to exceed the above range, you should know whether the use range of the compressor is permissible and whether the power of the main motor is sufficient.