Let’s talk about air conditioners and dryers:
1. Foreword: (The most common phenomenon of old cold dryers in the air compressor industry all over the world) Why is there still liquid water on site after the cold dryer is installed? The hotter the weather, the greater the air humidity, the more serious it is? The only answer is that the dew point is not up to standard! Why is it not up to standard? It means that the refrigeration temperature is not low enough or the gas-water separation effect is not good (the low-temperature liquid water that is not completely separated will evaporate for a second time in the pre-cooling regenerator, causing the compressed air dew point to become higher, and the on-site cooling will turn into liquid water)! Liquid water on site means that the compressed air dew point is higher than the site temperature, which does not meet the requirements for use! Does this have a lot to do with on-site application? Yes!
2. Let’s take a look at the common principles of air conditioning: We know that the cooling and dehumidification principles of refrigeration dryers and air conditioners are the same, but the air pressure processed by air conditioners and refrigeration dryers is different.
Experimental research shows that when the environment of the air conditioner’s external unit is higher than 35°C, the cooling capacity of the air conditioner will attenuate, and the attenuation rate of the refrigerant with a high critical temperature will be lower. Studies have shown that for every 10°C increase in the ambient temperature of the air conditioner’s external unit, the cooling capacity of the air conditioner will decrease by 50%, and more than 55% of the electronic control failures are caused by excessive temperature. The ambient temperature of the air conditioner is generally between minus 5°C and 42°C. If the ambient temperature is higher than 42°C in summer, the cooling effect of the air conditioner will be poor, or even unable to cool, and it will consume a lot of electricity. (Similarly, if the ambient temperature is lower than minus 5°C for heating in winter, the heating effect of the air conditioner will be very poor, or even unable to heat, and it will consume a lot of electricity, so it is not suitable for use in cold northern regions)
“CCTV10 Science and Education” National Testing Center: Air conditioning data: As the outdoor ambient temperature becomes higher and higher, the cooling capacity of the air conditioner becomes lower and lower, while the power consumption becomes higher and higher. Over time, the difference in electricity bills becomes very large. (Website link: When the outdoor temperature increases by 1°C, the air conditioner consumes more electricity and the cooling capacity decreases!
The higher the outdoor temperature that the air conditioner dissipates heat from, the worse the cooling capacity.
3. Talk about the removal of liquid water and water vapor at the front end of the energy-saving vacuum pump: configure the freeze dryer to be “even more powerful” to completely remove liquid water and atomized water vapor (the boiling point of water under negative pressure is very low, and it will definitely vaporize to produce a large amount of gas, such as : The vaporization boiling point of plain water is 100°C, while the vaporization boiling point of plateau water is 70°C) The vacuuming time is short, energy-saving, the vacuum pump lubricating oil does not emulsify, and there is no need for a dry vacuum pump at all. The oil-injected screw pump is better than the dry screw pump. It has higher vacuum degree, higher energy saving efficiency, longer life and safety in use.
4. Let’s analyze the following: Over the past few decades, air compressors have been equipped with cold dryers, but there has always been a water problem at the gas consumption site:
The full name of the cold dryer is the refrigerated dryer, which is also the principle of cooling and dehumidification of the air conditioner. A good cold dryer has a strong cooling firstly determined by good heat dissipation. Therefore, it is very important to place the cooling end in the most ventilated and coolest place, and the air compressor The station building is full of heating equipment, and the temperature is often above 46°C. The air compressor operates normally, but the refrigeration dryer does not cool. Therefore, placing the cooling unit outdoors in a cool and ventilated place can greatly ensure the cooling capacity.
The cold dryer with air storage tank, based on the principle of air conditioning technology, adopts a split form (cooling and drying air storage tank and heat dissipation system are separated), and can be placed flexibly and changeably according to the actual situation on site, thus ensuring the application of the cold dryer Good effect, energy saving, low failure.
Application of low pressure difference, low dew point, low power consumption cold dryer in large air compressor station
The composition of the split type cold dryer (meeting all outdoor placement) has multiple advantages:
High efficiency, low energy consumption, constant temperature, cold storage: 1. Superconducting energy storage, the split freeze dryer adopts the form of ice storage (the thermal conductivity of water is 25 times that of compressed air (8bar), and the mass, density, and cold storage capacity are compressed 100 times that of air); 2, using high-efficiency R410A environmentally friendly refrigerant, 1-level energy-efficient permanent magnet frequency conversion compression, which plays a good role in stabilizing the dew point in the case of compressed air pressure, flow, and temperature fluctuations; 3, with 4G IoT HFD High-definition color screen (clear vision under the sun); 4, fast and economical, saving equipment occupation and complicated installation costs; 5, flexible installation, can be all indoors, only cooling outdoors, or all outdoors; 6, air intake and output The temperature difference is small, and the air-conditioning does not flow out; 7, high-temperature overheated dry air is more durable (heat expansion and contraction); 8, clean air, high-efficiency oil removal, dust removal, specially designed micro-bubble washing structure and low-temperature oil removal, resulting in a more pure air Compressed air, prolonging the life of the precision filter element; 9, built-in super large self-cleaning water filter device, the drain will never be blocked; 10, zero air consumption drainage design, no waste of compressed air, no manual drainage; 11, energy saving, low resistance and low pressure The difference (less than 0.01MPA) can further reduce the operating pressure of the air compressor and reduce the operating current of the air compressor, so as to achieve the most energy-saving system. (General users can recover the cost of equipment investment after saving electricity for about one and a half years). The performance is equivalent to the “two-stage compression permanent magnet frequency conversion” in the air compressor.
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