21 to 7000cfm sunfilter freeze dryer industry dehumidifier for natural gas compressor

air dryer -Experts in air quality solutions and energy cost savings

• Capacity:1.2~600m³/min
• Pressure dew point:2~10℃
• Copper tube heat exchanger (air-to-air heat exchanger)
• Anti-corrosion of evaporator ( air-to-refrigerant heat exchanger)
• Air connection made of stainless steel material
•Environmentally friendly refrigerant R134a,R410a and R407c
• CE and ISO certificates

COMPRESSED AIR

Prevent rust and condensate problems by installing a compressed air dryer to remove water from your compressed air.

An important part of many compressed air systems is the compressed air dryer. Although not necessary for DIY at home type compressors, when you use many air tools or air-operated machinery, an air dryer is a must have!

A compressor that sucks in 20 liters of air per second, also supplies 24 liters of water a day! About 15 of those liters would be removed in that aftercooler. A further 7 liters would be removed in
a (refrigerant) dryer.

Why use a compressed air dryer?

As the name implies, air dryers are used to dry the compressed air: they remove moisture from the air, resulting in dryer air. This way, your valuable tools and machinery are protected from water and rust. But also your piping used to transport the compressed air is protected.

Water? Where is it coming from?

Compressors suck in lots of air and compress it to about 7 times the volume (that is, 7 bar pressure). The air that is sucked in always contains a little (or a lot!) water.

While the air can be compressed, the water cannot!

Say your compressor suck in 7 cubic meters of air per hour, and it compressed it to 1 cubic meter of air at 7 bar. The 7 cubic meters of sucked-in air contains water (like all the air around us). After
compression, there is only 1 cubic meter of air, but with still the same amount of water!

Hot air can contain more water than cold air. That’s a fact, just believe me :). When the air exits the compressor, it is hot and wet. 1 cubic meter hot compressed air still contains the same amount of water that the 7 cubic meters cold air did before they were compressed.

A few years ago, I was servicing some compressors at a factory. There hasn’t been any problems with the compressor said the owner.

As a standard routine, I drained the air receiver of water and
used a small bucket for that. After a few seconds, the bucket was full. I emptied the bucket and tried
again’?’ Again, the bucket was full! So I got a bigger bucket…

well, you get the picture..

At the end, the whole 1000 liter air receiver + part of the piping system (the water went all the way back to the compressor!) was full of water!!! That’s a lot of water!

They had 2 compressors with two air dryers installed. What was the problem? All the condensate lines (that would discharge the water
coming from the dryers and condensate traps) were blocked! The water couldn’t escape.

Normally, the compressed air goes through an aftercooler which will cool down the air to about 20 degrees higher than room temperature (about 40 degrees Celsius). During the cooling-down, a lot of water will condensate and will float with the air in the form of small drops.

At the end of the after cooler, there should be a condense water trap, which will remove all the water that has formed.

Now the air leaves the compressor at about 40 degrees, but saturated with water. It’s right at the dewpoint temperature (dewpoint = temperature at which condensate forms. That is when the air reaches 100% relative humidity and can’t hold any more water).

For every degree that your compressed air cools further, more water will condense! And considering that the air that leaves the aftercooler of the compressor is about 20 degrees warmer than room
temperature… you have a problem! :)

A compressor that delivers 20 liters of air per second, also supplies 24 liters of water a day!

About 15 of those liters would be removed in that aftercooler. A further 7 liters would be removed in a (refrigerant) dryer.

If you didn’t have a compressed air dryer, most of those 7 liters would end up in your compressed air piping, your receiver and in your tools and machinery!

CU/CW BRAND AIR DRYERS:

FEATURES:

· Perfect refrigerated system configuration. Initial parts come from foreign famous brands to ensure efficient & system reliable running & life as well.

· Refrigerated & air system is accurate calculated by professional designing engineer, keep 20% capacity.

· Gas liquid separated thoroughly. Filtering separated with HANKISON element. Thorough separation, avoid the second vapor of water, ensuring dry effect. It better than cyclone separated and it will reach efficiency at 99.99%.

· Pipeline is made from inner zincification. You can choose working pressure during 0.3~4.5Mpa.

· Stainless steel pipeline, it's suitable for medicine, food stuff, acid-resistant, alkaline-resistant and erodent-resistant industry.

· Ripple pipeline of both internal and external of the heat exchanger to increase the using rate of cooling air, adverse current structure, perfect returning temperature and it won't freeze.

· Evaporator is made from laminose copper pipeline with aluminum flake, high efficiency of heat exchanging of the perfect structure.

· Good drainage, it adopts 3 grades for draining, can drain lots of condensate water and oil contaminant so as to keep clean and dryness of the system and air, meanwhile reduce system load.

· Multi-control of circuitry to supply to different users (single control; integrate circuit, linkage control, PC panel, frequency conversion, etc.)

· Outer cooling fan with large volume, low noise, and long life if switch frequently.

· Low condenser made from copper, slow flow, multi-cycling and high heat exchanging rate. It won't freezing and dirty if stop for a long time.

· Armstrong foam burning resistant & adiabatic material. It's the least loss of cooling air.

· Protection level of compressor is IP54 (dustproof and spill proof).

Working Condition & Technical Data:

• Inlet temperature:≤ 45℃
• Cooling method: Air-cooled
• Design dew point:2~ 10℃
• Refrigerant: R22
• Inlet pressure: 0.6~1.0MPa
• Pressure drop:≤0.02MPa

1. Control Pandel (PCB)

- Dryer start / stop.

- Ref. system monitoring.

2. Control Box

- Main wiring

- Electric parts.

3. Hot Gas Bypass Valve

- Capacity control of ref. system.

- Ref. syetem balance.

4. Refrigerant Compressor

- Compress the gasified refrigerant.

- Keeps the refrigerant moving in a loop.

5. Filter Dryer

- Adsorb moisture.

- Provide filltaration.

6. Aluminum Heat Exchanger

- Air to air heat exchange.

- Air to ref. heat exchange.

7. Transformer

- Step down or up the system voltage.

- Option

8. Pressure Switch

- HPS(High Press. Switch) or DPS(Dual Press. Switch)

- Ref. system protector.

9. Fan Control Switch

- Control the condenser fan motor.

- Operated by ref. pressure.

10. Condenser

- To liquefy the hot & high pressure ref. gas.

- Combined with fan motor.

11. Expansion Valve

- Removes pressure from the liquid refrigerant.

- Change of state from liquied to vapor.

12. Electric drain valve

- Discharging condensed water.

- On/Off timer.

Model		CW-15NF	CW-20NF	CW-25NF	CW-30NF	CW-40NF	CW-50NF
capacity(Nm3/min)		17	23	27	33	45	55
voltage(v/Hz)		380v/50Hz
compressor power(HP)		4	5	5.5	7.5	10	13.5
fan power(W)		180×2	245×2	245×2	245×2	245×3	450×3
air connection		DN80	DN80	DN80	DN80	DN100	DN125
net weight(kg)		400	450	570	660	770	850
dimensions(mm)	length	1360	1650	1650	1650	1810	2245
	width	710	970	970	970	1090	1410
	height	1205	, 1422	1422	1422	1697	1955

DRYERS