Editor’s Notice: This paper describes the design of ground source warmth pump system methods and procedures, focusing on the underground warmth exchanger design approach. And examples.
Sustainable advancement with the Chinese building market, on constructing energy effectiveness specifications are large, heating techniques and air-conditioning system is a main part of constructing vitality consumption, consequently, to reduce the vitality consumption of these two extremely important which means. Ground Supply Heat Pump technique is a use of renewable vitality, electricity efficient, setting-helpful technique [1]. Winter by absorbing the electricity of the earth, which includes soil, nicely h2o, lakes and other natural vitality, to heat buildings summer time heat release to the earth, to the developing cooling. Accordingly, floor source heat pump method sub-source heat pump technique, groundwater and floor h2o warmth pump program heat pump method, 3 varieties of types.
Ground supply heat pump method is the ground-coupled to warmth exchanger.
Groundwater heat pump method is divided into open, closed two types: open drinking water is available straight to the heat pump, and then properly drinking water recharge into the floor closed is linked to the plate heat exchanger h2o want the second heat.
Surface h2o heat pump methods and floor source warmth pump method related to h2o in parallel with the likely of groundwater plastic tubes, heat exchanger warmth exchanger substitute to the soil.
Although the use of groundwater, floor water heat pump program, warmth transfer functionality, low energy consumption, larger than the ground resource heat pump coefficient of efficiency, but because of groundwater, floor water is not obtainable all over the place, and the water does not always meet the specifications, so its use is subject matter to certain restrictions. Abroad (these as USA, Europe), the primary investigation and software of floor supply warmth pump system and our theoretical and experimental research are focused on ground supply heat pump system. The present lack of style data and far more certain style tips, this paper performed a preliminary review for reference.
1 ground supply warmth pump method design and style of the main measures
(1) constructing heating and cooling and underground for the winter and summertime warmth calculation
Building cooling and heating load calculation and standard air conditioning system cooling and heating load calculation of the very same, refer to the air conditioning program design and style manual, not discussed right here.
Floor for winter months and summertime respectively, refers to the summertime heat to winter months soil emissions of heat and the warmth absorbed from the soil. The subsequent method can be [two] calculation:
KW (one) KW (2) Exactly where Q1 ‘?? Summer time heat discharge to the soil, kW
Q1?? Summertime, complete style cooling load, kW
Q2 ‘?? Winter, the heat absorbed from the soil, kW
Q2?? Winter months, the complete style heat load, kW
COP1?? Layout circumstances the coefficient of cooling water source warmth pump models
COP2?? Style problem heat pump drinking water heating coefficient
Basic, h2o resource heat pump unit of the item samples are offered access to water of various temperatures, cooling capability, heating capability and the cooling coefficient, heating coefficient, calculated from the sample really should be selected style problem of COP1, COP2. If the samples without having the essential design condition, can be calculated by interpolation.
(2) underground heat exchanger design and style
This component of the ground source heat pump system is the core content, which includes the sort of underground warmth exchangers and pipe choice, diameter, length and number of shafts, pitch identification, pipeline and pump variety for these resistance calculation.
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