Air-cooling and water-cooling each have their own characteristics. They should be selected according to different use environments, space, and cooling capacity of the required units, and different urban areas.
The water-cooled chiller must be equipped with a cooling tower. For an open-type cooling circulating water system, as the cooling water absorbs heat and contacts the air, CO2 escapes into the air, and the dissolved oxygen and turbidity in the water increase, causing the cooling circulating water system to have 4 Big problems: corrosion, scaling, growth of bacteria and algae and sludge. If the water quality is not treated, it will seriously damage the refrigeration equipment, greatly reduce the heat exchange efficiency, and cause a waste of energy. Therefore, it is very important to perform corrosion inhibition, scale inhibition, sterilization and algae treatment on the system water.
The cooling system of the water chiller must be equipped with an electronic water treatment device or a strong magnetic water treatment device, otherwise the heat dissipation efficiency will be too attenuated. The longer the use time, the worse the effect of the system. The annual water treatment cost is high, and the effect cannot reach 99%. Of descaling. The quality of the cooling circulating water is the key.
The treatment of cooling circulating water is divided into physical and chemical methods.
The physical method mainly uses: electrostatic water treatment instrument, electronic water processor, and internal magnetic water processor for treatment.
Small systems can choose between the two, and most of the large units are water-cooled. The initial investment of water cooling is a little less in terms of the main engine than that of air cooling. But with the addition of cooling towers, computer rooms and electronic water treatment devices, there is not much to go! Besides, in terms of long-term operation, water-cooled units are The refrigeration efficiency will be relatively reduced. Air cooling will not.
The air-cooled chiller adopts air cooling, which eliminates the need for cooling towers, cooling water pumps and piping systems that are essential for cooling water systems, avoiding condenser fouling and water pipe blockage in areas with poor water quality, and also saving water Resource is the most economical and simple model for maintenance and repair among current cold water air-conditioning equipment products. The noise and volume of the air-cooled unit are larger than that of the water-cooled unit, so it can only be installed outdoors. Most water-cooled units are installed in the basement.
Life and efficiency
Air-cooled evaporative air conditioner is designed to have an effective service life of 5-8 years (ordinary air-conditioning equipment)
The service life of the water-cooled chiller air conditioner is more than 20 years (water-cooled screw compressor)
The service life of air-cooled chiller air conditioners is 6-11 years.
Sub-COP=Nominal cooling capacity of air conditioner/Compressed input power
The COP plant represents the energy efficiency ratio of the air conditioner. The higher the energy efficiency ratio is the water-cooled unit. The higher the cop value, the higher the efficiency of the air conditioner and the better energy saving.
Split embedded machine COP value 2.4
Air-cooled module COP value 3.44
Water-cooled screw COP value 5.2
Shanghai Raof Refrigerator Co., Ltd. is a modern private enterprise specializing in the development, production and sales of refrigerators. The company mainly produces various types of industrial refrigeration equipment. The products include eight series of products including screw type, piston type water chiller and refrigeration unit, large-scale brine freezing equipment, process chiller, ultra-low temperature alcohol unit (box), and ultra-low temperature test box. Provide high-quality, energy-saving refrigeration equipment for petrochemical, biomedicine, food and beverage, electronic communications, textile metallurgy and other industries. The above is the relevant introduction brought by the editor. I believe it will be helpful to everyone. If you have any other questions about chillers, please contact us. Consultation telephone: 021-39117175/13901883766.