FAQ

 To complete the calculation and get the ‘actual flow rate’ required by a refrigerated air dryer to suit our compressed air system we perform the calculation as follows:

FAD x Correction Factor (Working Pressure) x Correction Factor (Ambient Temperature) x Correction Factor (Inlet Temperature) x Correction Factor (Pressure Dew Point) = Actual Flow Rate of Dryer Required.
So the actual calculation would be:
14.18 x 1.06 x 1 x 1 x 1 = 15.03 m³/min.
 
If you would like more information on selecting and sizing a suitable refrigerated air dryer for your application don’t hesitate to contact us on +91 9833121160 or simply complete the ‘Enquiry Form’ on this website.

 1) Flow Rate (Free Air Delivery (FAD))
The flow rate is determined by the FAD of your air compressor(s) to determine the minimum flow the refrigerated air dryer needs to be able to process. For example an 8 bar, 75kW Rotary Screw Compressor has a FAD of 14.18m³/min.

2) Operating Pressure
Refrigerated air dryers are usually specified at a 7 bar operating pressure. Therefore a compressor operating at 8 bar would require a correction factor to be applied. The correction factor table below indicates that for 8 bar operating pressure the dryer has a capacity of 1.06 times that of its capacity at 7 bar.

3) Maximum Ambient Temperature The maximum ambient temperature of the environment the refrigerated dryer will be located must be considered in the calculations.

4) Maximum Inlet Air Temperature The inlet air temperature refers to the temperature of the compressed air as it enters the dryer. An effective aftercooler will reduce the temperature of the compressed air to around 10°C above ambient. An air dryer selected for an ambient temperature of 35°C will typically experience an inlet temperature of 45°C.

5) Pressure Dew Point
The pressure dew point is the point at which water vapour turns to liquid. A correctly sized dryer will lower the pressure dewpoint such that moisture is turned to liquid which can be easily removed. 

CFM stands for “cubic feet per minute” and is a measure of air flow.

Chiller prices are as varied as the options available. The type of chiller, its tonnage and use all affect the purchase price. Cost factors for chillers include quality, longevity and efficiency in addition to the purchase price. Evaluate these as carefully as you do the price tag to make the best decision.

Industrial Chiller systems have three main components — compressors, evaporators and condensers. Each changes the state or pressure of the refrigerant during the cooling process:

The standard warranty is 12 months. Warranty will be applicable for one year, any kind of damage and gas leakage will not be covered under warranty.

NO. This is where it can get confusing mostly. At cooling temperatures a 5 HP compressor can produce close to 5 tons of cooling. However, if your application requires a minus glycol fluid temperature, that same 5 HP compressor will produce less BTUs/tons. This means more horsepower is required to produce 5 tons at those lower temperatures.

 British thermal unit: The amount of energy needed to cool or heat one pound of water by one degree Fahrenheit.

There are many variables involved with the sizing of an Industrial Chiller. We have a team ready to ask you the questions to determine your precise requirements.

Maintenance is minimum. Measure the glycol mixture quarterly throughout the year. Keep the condenser clear from obstructions and free from debris. Yearly inspections will be a good idea.

This varies; it depends as per seasonal requirement or customer requirement. Approx. lead time will be 3-4 weeks.

Glycol is an Antifreeze. There are two main types of glycol: Propylene and Ethylene. In food applications propylene glycol is used as it is non-toxic. Ethylene glycol is typically used in industrial type applications.

Dry Chill Chillers recommends 50% Glycol with 50% water. We measure the solution using a glycol refractometer.
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