地源熱泵對低溫熱源的要求
地源熱泵的低溫熱源有多種,用得多的主要是地熱利用的排水、淺層冷水和土壤。那么地源熱泵對低溫熱源有什么樣的要求呢?
Ground source heat pumps have many kinds of low temperature heat sources. The most widely used are geothermal
drainage, shallow water and soil. Then, ground source heat pump for low-temperature heat source what kind of
requirements?
一、低溫熱源的溫度要盡量高,例如從10℃的冷水中取熱送至60℃的高溫環(huán)境,其提升的溫差為50℃;若從35℃的地熱排水中提取熱量,同樣送至60℃的高溫環(huán)境,則其提升溫差只有25℃。
A 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.
二、低溫熱源要有足夠的熱量可以被提取,而且提取熱量的能耗要盡量小。從地熱利用系統(tǒng)的排水取熱是廢物利用,額外增加的能耗很少。
Two, the low temperature heat source should have enough heat to be extracted, and the energy consumption of the
extraction of heat should be as small as possible. Heat extraction from geothermal systems is a waste utilization,
with little additional energy consumption.
三、低溫熱源對金屬設備的腐蝕應盡量小,從這點看,地熱系統(tǒng)排水作低溫熱源比淺井冷水差,因為一般地熱水或多或少都對金屬有腐蝕,而淺井冷水水質(zhì)較好,一般很少腐蝕。
Three, low temperature heat source on the corrosion of metal 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.
四、低溫熱源的溫度波動要盡量小,這與熱源是否有充足的熱量可供提取有很大關(guān)系。一般來說,淺井冷水的溫度比較恒定;土壤取熱后溫度是否會下降則與取熱量和埋設的換熱設備占地面積有一定關(guān)系;地熱利用后的排水溫度能否保持恒定,與系統(tǒng)設計時采用的控制設備和自控的質(zhì)量有關(guān)。
Four, low temperature heat source temperature fluctuations should be as small as possible, and this heat source
has sufficient heat for extraction has a lot to do with. In general, Asakai cold water temperature is relatively
constant; soil heat temperature will decline, and taking the heat and buried heat exchanger in the area have a
certain relationship; geothermal utilization after water temperature can be maintained constant, and relevant
quality control equipment and automatic control system designed by the.
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