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Why does your cooling unit consume so much power?

次 Source: Shenzhen Simpson Refrigeration Technology Co., Ltd. Release time: 2018-03-29 Browse: 14624 times

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The amount of refrigeration produced by Simpson refrigeration equipment is directly related to the operating conditions of the system. For a compressor with the same structure, rotation speed and refrigerant type, due to changes in operating conditions and different operation and management, its cooling capacity and energy consumption are different. Energy also changes.
1. When the scale on the wall of the condenser reaches 1.5mm, the condensation temperature will increase by 2.8 ° C compared with the temperature before scaling, and the power consumption will increase by 9.7.
2. The surface of the evaporator is covered with a layer of frost, which reduces its heat transfer coefficient, especially when the frost on the outer surface of the finned tube not only increases the heat transfer heat resistance, but also makes the air flow between the fins difficult and reduces the appearance. Heat transfer coefficient and heat dissipation area. When the indoor temperature is lower than 0 ℃ and the temperature difference between the two sides of the evaporator tube group is 10 ℃, the heat transfer coefficient of the evaporator after one month of operation is about 70 before frosting.
3. The gas inhaled by the Bitzer compressor allows a certain degree of superheat, but the degree of overheating is too large, the specific volume of the inhaled gas increases, its cooling capacity decreases, and its relative power consumption increases.
比泽尔压缩机 来霜,迅速关小吸气阀,急剧地降低产冷量,相对增加耗电量。 Fourth, the Bitzer compressor comes to frost, and quickly closes the small suction valve, which drastically reduces the cooling capacity and relatively increases the power consumption.

5. With the decrease of evaporation temperature, the compression ratio of Bitzer compressors increases, and the energy consumption per unit of cooling capacity increases. When the evaporation temperature is lowered by 1 ℃, it will consume 3% -4% more power. Therefore, reducing the evaporation temperature difference as much as possible and increasing the evaporation temperature will not only save power consumption, but also increase the relative humidity in the cold room.
6. As the condensation temperature increases, the compression ratio of the compressor increases, and the energy consumption per unit of cooling capacity increases. Condensing temperature is between 25 ° C and 40 ° C. Each increase of 1 ° C increases the power consumption by about 3.2%.
7. When the heat exchange surfaces of the condenser and evaporator are covered with an oil layer, it will cause the condensation temperature to rise and the evaporation temperature to decrease, resulting in a decrease in the amount of cold production and an increase in power consumption. When a 0.1mm thick oil layer accumulates on the inner surface of the condenser, it will reduce the compressor's cooling capacity by 16.6 and increase its power consumption by 12.4. When a 0.1mm thick oil layer accumulates on the inner surface of the evaporator, in order to maintain the established low temperature requirements, The evaporation temperature dropped by 2.5 ° C and the power consumption increased by 9.7.
8. When air accumulates in the condenser, it will cause the condensation pressure to rise. When the non-condensable gas partial pressure reaches 1.96105Pa, the power consumption of the compressor will increase by 18.

工业冷水机 、水冷箱式冷水机、风冷箱式冷水机组、冷冻机、注塑专用冷水机、电镀冷水机、混泥土专用冷水机、低温 防爆冷水机 组、特种非标冷水机组、化工冷水机、钛泡冷水机、激光冷水机、低温冷水机组、中央空调主机、模温机、冷却水泵、冷却塔,冷库制冷机组:活塞式冷凝机组、螺杆式冷凝机组、箱式风冷冷凝机组、螺杆式并联机组等。 Simpson's main products include: water-cooled screw chiller, air-cooled screw chiller, industrial chiller , water-cooled box chiller, air-cooled box chiller, freezer, injection molding chiller, electroplating chiller, special for concrete Chiller, low temperature explosion-proof chiller , special non-standard chiller, chemical chiller, titanium bubble chiller, laser chiller, low temperature chiller, central air conditioning host, mold temperature machine, cooling water pump, cooling tower, cold storage refrigeration unit: Piston-type condensing unit, screw-type condensing unit, box-type air-cooled condensing unit, screw-type parallel unit, etc. All product series are manufactured using ISO9001 quality management system standards, have a complete industrial product production license certification, and have carried out a series of professional certifications at home and abroad such as CCC, ACMEC, ETCC, CE, GS, ATN. With advanced refrigeration technology and excellent quality, Simpson Refrigeration has gathered the strengths of the family, carefully researched and developed, and achieved satisfactory results. The company's first-class after-sales service has won the trust and support of customers.

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