pv magazine
Summary
An international research group has investigated the performance of booster heat pumps (BHPs) in ultra-low temperature district heating (ULTHD) networks and has found that the refrigerant charge is a key factor in determining the feasibility of such a hybrid system configuration.
BHPs are used in DH systems to make them operate at substantially lower temperature levels, improving the coefficient of performance of central heat pumps used in the networks themselves, while simultaneously lowering DH grid losses significantly. They also help reduce heat loss along the DH system.
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