Comparison of okmarts.com rotary dryer and refrigerated dryer

Comparison of okmarts.com rotary dryer and refrigerated dryer

Although both the air purification rotary dryer and the traditional refrigerated dryer (commonly known as "cold dryer") are used to remove water from compressed air, the details are very different. The refrigerated dryer can only be used to remove air Where water demand is not high, the rotary dryer is essentially an adsorption dryer, which can be used in deep drying occasions. Due to the different principles of dehumidification, it will be a better choice under the same conditions .

　　 Let's look at the details:

Dehumidification effect comparison

　　 Refrigerated dryers are restricted by the principle of refrigeration, and the temperature is too low to freeze, so the pressure dew point temperature is usually 2~10℃ PDP

　　 Rotary dryer uses composite materials containing silica gel, which can be deeply dried, only related to working conditions, breaking through the principle of limitation, the pressure dew point temperature is usually -30~0℃ PDP

　　 Rotary dryer does not waste more energy because it provides drier air, but the opposite is true

　　 Energy Consumption Comparison

　　The refrigerated dryer generates cold energy through the refrigeration compressor, and consumes a lot of electricity

　　 Rotary dryers usually use the waste heat of the compressor to regenerate, so that the runner can restore the state of water absorption. Only the energy consumption of the small motor and the electric control part of the runner is required, and the electric power is only 100 watts. Even if the heater is installed, the energy consumption is much lower than that of a refrigerated dryer. Moreover, the rotary dryer does not have the air consumption of other adsorption dryers.

　　According to a rough calculation of 8000 hours of operation at 1 yuan per kilowatt-hour of electricity, take the processing capacity of 100m3/min as an example:

　　The annual electricity cost of the refrigerated dryer: 16kW*8000*1=128,000 yuan

　　 Rotary dryer one year electricity cost: 0.1kW*8000*1=800 yuan

　　 read you right, the gap is so big!

　　 pressure drop comparison

　　 The pressure drop of the refrigerated dryer will be greater than 0.35bar, and a large area of ​​heat exchange is required when the compressed air is cooled. The pressure drop has to be increased, which increases the discharge pressure of the front air compressor and increases energy consumption

　　The pressure drop of the rotary dryer is less than 0.2bar, and the air passes through the honeycomb design to achieve the smallest pressure loss

　　 noise contrast

　　 The compressor in the refrigerated dryer is a high-speed rotating part, which will inevitably make noise, usually exceeding 65 decibels

　　 The rotary dryer has reached an incredible 50 decibels, which is almost silent and can be placed indoors. And there is no outgassing of other adsorption dryers

　　 reliability comparison

　　 The refrigerated dryer has two sets of refrigerant system and air system. There is also a compressor in the refrigerant system, and the electrical part is relatively complicated, and the hidden trouble of failure is greater.

　　 Rotary-wheel dryer has only one part of the runner with ultra-low speed, no valve switching, simple electrical part, and the possibility of failure is very low

　　 maintenance comparison

　　The refrigerated dryer has no consumables and wearing parts

　　 Rotary wheel dryer also has no consumables and wearing parts. The runner is made of hard base material and does not contain or need to replace desiccant.

　　Of course, everything has two sides. Compared with refrigerated dryers, the "disadvantage" of rotary dryers is that they need to be used with oil-free compressors and take advantage of the high discharge temperature of oil-free compressors. So if you use an oil-free compressor, don't hesitate to choose a rotary dryer.

　　 Summary: All-round rolling