A chiller is an energy-saving machine that achieves refrigeration by steam compression or absorption cycles. The chiller is called the cooling water circulation machine, also called the chiller, the chiller, the chiller, the chiller, the chiller, the small chiller, the industrial chiller, the refrigeration unit, the low temperature chiller, the laser chiller, because of the wide range of industries. Use, so according to different industries, its aliases are countless. Our company mainly produces air-cooled chillers, water-cooled chillers, screw chillers and filling line industrial chillers.
(1) The initial investment of air-cooled units is lower than the initial investment of water-cooled units, but the unit cooling capacity is slightly higher than that of water-cooled units, but the annual comprehensive cost of air-cooled units is basically the same as or slightly lower than that of water-cooled units.
(2) From the operation point of view, only when the unit's annual running time is very long, it is possible for the water-cooled unit to slowly recover the higher part of the investment later.
(3) The amount of cooling water in the water cooling unit is an important factor affecting its cost. Strengthening maintenance management and reducing water consumption are important aspects of reducing the cost of water-cooled units.
First, the summary
The air-cooled refrigeration unit is suitable for medium and small systems with tight water sources in the region; the longer the annual operating hours, the more advantageous the air-cooled refrigeration unit is; the annual comprehensive cost of the air-cooled refrigeration unit is lower than that of the water-cooled system, but water-cooled If the system is managed and the water supply is controlled below 3%, the initial investment of the air-cooled refrigeration unit compared with the water-cooled refrigeration unit is difficult to recover.
Second, the technical and economic comparison of the two units
2.1 Description Considering that the number of air-cooled condensers of large refrigeration units is too large, it is usually difficult to arrange. On the other hand, too small water-cooled refrigeration units are also unfavorable for use, so they are equally cold for medium-sized air-cooled units. The amount of water-cooled refrigeration unit is compared.
2.2 Initial investment of the unit
2.2.1 The initial investment of the unit includes equipment, installation and electricity expansion;
Now compare a certain type of water-cooled refrigeration unit with the same air-cooled refrigeration unit with main unit and evaporator.
The annual operating time of the compressor is 1000 hours to 3000 hours, and the annual running time of the cooling tower and the pump is 1400 hours to 4200 hours.
2.3.1 Operating costs of air-cooled refrigeration units
Annual cooling cost of air-cooled refrigeration unit = (compressor power consumption + fan power consumption) × running time / year × electricity price
2.3.2 Operating costs of water-cooled refrigeration units
2.3.2.1 Annual power consumption of water-cooled refrigeration unit = (compressor power consumption + cooling tower fan power consumption + cooling water pump power consumption) × running time / year × electricity price
2.3.2.2 Water-cooled refrigeration unit annual water fee = (total circulating water × water change times + water supply × total circulating water × running time / year) × water price
Third, the conclusion
3.1. The amount of water replenishment of the cooling unit of the water cooling unit is an important factor affecting its cost. Strengthening maintenance management and reducing water consumption are important aspects of reducing the cost of water-cooled units.
3.2. The initial investment of air-cooled refrigeration unit is higher, and the power consumption per unit cooling capacity is also slightly higher than that of water-cooled unit. However, the annual comprehensive cost of air-cooled unit is slightly lower than that of water-cooled unit. The technical and economic analysis results show that it is reasonable to configure air-cooled condensers for medium and small chillers.
3.3. The longer the annual running time of the chiller, the more favorable it is to the air-cooled unit. The initial investment recovery period of the air-cooled unit compared with the water-cooled unit is shorter. Therefore, the chillers used for air conditioners in the south are more suitable for air-cooled units. From the cooling conditions, the wet bulb temperature in the south is high, which is also unfavorable for water-cooled units.
Chiller application industry:
The chiller is mainly used in the plastics industry: plastic molding, injection molding, extrusion molding, blowing, thermoforming, machinery industry: laser technology, welding, mechanical cutting, non-cutting, casting, electroplating, electronics industry: surface treatment, electroplating , electrophoresis, medical equipment, electronics industry, circuit board production, electronic chip manufacturing, chemical industry and other industries: chemical, paper, pharmaceutical, food processing, aluminum profiles, aluminum alloys, tempered glass, coated glass production, ultrasonic cleaning冼, jewelry processing, leather, fur processing, ink production, aquaculture.
Interlocking Nail,Intramedullary Nail,Femoral Interlocking Nails
Foyomed Medical Instruments Co., Ltd. , http://www.nbmedicalinstruments.com