50HP Screw Type Chiller Central Chiller Air Cooled Industrial Plastic Chiller

Benefit of using industrial central chiller applications in plastic industry

1. The need for highly efficient and reliable cooling systems has risen due to technological advances and the need for energy-efficient cooling systems. Of the many industrial chillers on the market, screw chillers seem to be the preferred choice for industrial and commercial use.
2. Provide constant temperature and constant water flow chilled water to the mould of plastics production line, to increased production speed and ensure efficiency production.
3. Accurate temperature control capability, the freezing temperature can be accurate to ±0.1, to ensure the highest quality final products.
4. The cooling fluid is recirculated to reduce waste and cost.
5. Water chiller systems prevent damage to heat-sensitive industrial components preventing undesirable repair downtime that might slow or even halt production altogether.

• ​Why air-cooled chiller has high pressure alarm?

In hot summer, many air-cooled chillers have high pressure alarm,especially in areas with relatively high temperatures which can be above 45℃, such as Saudi Arabia, the United Arab Emirates, Iraq and so on.

General air-cooled chiller is equipped with a full set of protection devices, when the chiller appears high pressure alarm, it will automatically start the protection device, and the corresponding fault indicator light will be lit.

The high pressure alarm of the air-cooled chiller is triggered by the poor cooling effect of the condenser.If this problem is not fixed and keep running the chiller at high pressure for a long time, it will cause the current to be too large and burn the compressor.

The reasons for the chiller high pressure alarm are as follows:

1. Air-cooled chiller’s condenser rely on fans to dissipate heat.When the ambient temperature is above 42 degrees, the heat dissipation of the condenser is poor, that is, the heat generated by the refrigerant circulation cannot be taken away by the fan.

2. The condenser is dirty and blocked, which will also cause poor heat dissipation and lead to high pressure alarm.

Solution:

1. Check whether the fan works properly.

2. Make sure there’s good ventilation to exhaust hot air smoothly.

3. If the ambient temperature is higher than 42 degrees, use a fan or cooler to cool down the temperature around.

4. Periodically remove the air filter to clean the fins or clean the fins with high-pressure air.

5. If the ambient temperature is around 42 ℃, need to increase the condenser size to improve heat dissipation efficiency.Normally, we will increase size to 25% for chiller using refrigerant R22, R407c, R410a.

If ambient temperature higher than 45 ℃, we suggest to design the chiller with R134a which can be used at ambient temperature of 50 ℃.The disadvantage is that the cost is relatively high, because its refrigeration efficiency is only 65% compare with other refrigerants, in order to achieve the same cooling capacity, you must use a larger compressor.

P.S. The installation of air-cooled chiller should choose the right location to ensure that the installation environment is well ventilated.

How to select the model of the chiller ?

• We need to know the heat load of your process or chiller cooling capacity.
• Required water temperature, water pressure and flow rate.
• Application and power supply in local.
• Max. Ambient temperature in summer day
• Customized special specifications are acceptable. Contact us for more chiller Specification by number +86 13923791048.