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Possibility of Heat Pump Use in Hot Water Supply Systems

Original scientific paper

Journal of Sustainable Development of Energy, Water and Environment Systems
Volume 4, Issue 3, September 2016, pp 203-215
DOI: https://doi.org/10.13044/j.sdewes.2016.04.0017
Tatyana Babak1, Neven Duić2, Gennadiy Khavin1, Stanislav Boldyryev2 , Goran Krajačić2
1 National Technical University “Kharkiv Polytechnic Institute”, Frunze 21, UA-61002 Kharkiv, Ukraine
2 Department of Energy, Power Engineering and Environment, Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, HR-10002 Zagreb, Croatia


The problem of modernization of the heat module with two-stage mixing scheme connection of hot water supply by installations of the heat pump during interheating period is considered. Heating water of the in-house circuit of the building heating system is used as a heat source for heat pump. The district cooling of the residential areas is possible through the heaters during the summer. R600 refrigerant is chosen for heat pump for its environmental-friendliness and low-pressure of evaporation and condensation. The economic calculation is made for interheating period comparing the operation with and without heat pump. This paper advances selection of optimum amount of heat to be recovered during low potential heat utilisation and targets for heating and cooling capacities.

Keywords: Hot water supply, Heat pump, Heat module, Interheating period.

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