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制冷机组耗电是哪些原因造成的?

作者:admin 来源:本站 发布时间:2018-1-18 15:24:02

1、随着蒸发温度的降低,压缩机的压缩比增大,单位产冷量耗能增加。当蒸发温度每降低1℃,则要多耗电3%-4%。因此尽可能缩小蒸发温差,提高蒸发温度,不但节约电耗,还可以提高冷间的相对湿度。
1. With the decrease of the evaporation temperature, the compression ratio of the compressor increases and the energy consumption per unit increases. When the evaporation temperature is reduced by 1 degrees centigrade, the power consumption is more 3%-4%. Therefore, as far as possible to reduce the evaporation temperature difference, improve the evaporation temperature, not only save electricity consumption, but also improve the relative humidity of the cooling room.
2、随着冷凝温度的升高,压缩机的压缩比增大,单位产冷量的耗能增加。冷凝温度在25℃-40℃之间,每升高1℃,增加耗电量3.2%左右。
2, with the increase of the condensing temperature, the compression ratio of the compressor increases, and the energy consumption per unit cooling increases. The condensing temperature is between 25 and -40 C, and the increase of electricity consumption is about 3.2% at 1 degrees centigrade.

3、冷凝器和蒸发器的换热表面覆有油层时,会引起冷凝温度升高,蒸发温度降低,导致产冷量减少和耗电量增加。冷凝器内表面上积有0.1mm厚油层时,将使压缩机产冷量下降16.6,耗电量增加12.4;蒸发器内表面上积油0.1mm厚油层时,为了保持已定的低温要求,蒸发温度就下降2.5℃,耗电量增加9.7。

山东制冷机组

3, when the surface of the condenser and evaporator heat exchanger is covered with oil layer, the condensing temperature will increase and the evaporation temperature will decrease, which will lead to the reduction of production and the increase of electricity consumption. When the 0.1mm thick oil layer is on the inner surface of the condenser, the cooling capacity of the compressor will be reduced by 16.6, and the power consumption will increase by 12.4. When the 0.1mm thick oil layer is accumulated on the inner surface of the evaporator, the evaporation temperature will drop 2.5 degrees and the power consumption will increase 9.7, in order to maintain the specified low temperature requirement.
4、当空气聚集在冷凝器内时,会引起冷凝压力升高,不凝结气体分压力达到1.96105Pa时,压缩机耗电量要增加18。
4, when the air is gathered in the condenser, the condensing pressure will rise, and the power consumption of the compressor is increased by 18 when the non condensable gas pressure is reached to 1.96105Pa.
5、当冷凝器的管壁结水垢达到1.5mm时,冷凝温度比结垢前的温度上升2.8℃,耗电量增加9.7。
5. When the scale of the tube wall of the condenser reaches 1.5mm, the condensation temperature rises 2.8 degrees centigrade than that before the scaling, and the power consumption increases by 9.7.
6、蒸发器表面覆盖一层霜层,使其传热系数减小,尤其是翅片管外表面结霜时,不但增加了传热热阻,而且使翅片间的空气流动困难,减少外表的传热系数和散热面积。当室内温度低于0℃时,蒸发器管组两侧温差为10℃时,蒸发器工作一个月后,其传热系数大约是结霜前70左右。
6, the surface of the evaporator is covered by a layer of frost, which reduces its heat transfer coefficient. Especially when the outer surface of finned tube is frosted, it not only increases the heat transfer resistance, but also makes the air flow between the fins difficult, and reduces the external heat transfer coefficient and the heat dissipation area. When the temperature difference between the two sides of the evaporator tube group is 10 degrees centigrade, the heat transfer coefficient of the evaporator is about 70 before frost, when the temperature difference between the two sides of the evaporator tube group is 0.
7、 压缩机吸入的气体允许一定的过热度,但过热度太大,吸入气体的比容增加,其产冷量降低,相对耗电量增加。
7, the compressor suction gas allows a certain degree of superheat, but the superheat is too large, the specific volume of the inhaled gas increases, its cooling capacity is reduced, and the relative power consumption increases.
8、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。
8, the compressor to frost, quickly turn off the small suction valve, sharply lower production cooling, relatively increase the power consumption.
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