发布日期：2018-04-09 作者：地源热泵 点击：
Ground source heat pump has many kinds of low temperature heat source, in fact, the most widely used are geothermal drainage, shallow cold water and soil. So ground source heat pump for low temperature heat source what kind of requirements?
The low temperature heat source temperature should be as high as possible, such as high temperature heat from the cold water of 10 DEG C to 60 C in the ascending temperature is 50 DEG C; if from 35 DEG C to extract heat high temperature geothermal water, the environment also sent to 60 DEG C, the temperature increase only 25 degrees C. The greater the temperature difference is, the smaller the heating coefficient of the heat pump is, the worse the energy saving effect of the heat pump is.
Low temperature heat source has enough heat to be extracted, and the energy consumption of extracting heat should be as small as possible. Drainage from geothermal systems is a "waste" utilization, with little additional energy consumption. From this point of view, it is better than getting cold water from shallow wells. However, if there is no geothermal well in this area, heat extraction from shallow well water or heat from soil is an optional low temperature heat source for geothermal heat pump.
Low temperature heat source on the metal corrosion of equipment should be as small as possible, from this point of view, the geothermal system drainage as low temperature heat source than the shallow well water is poor, because generally more or less metal corrosion of hot water and cold water, shallow well water quality is better, in general little corrosion.
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