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International Journal of Latest Research in Science and Technology

DOI:10.29111/ijlrst   ISRA Impact Factor:3.35

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USING HEAT FROM LOW-TEMPERATURE ENERGY SOURCES BY MEANS OF A HIGH-TEMPERATURE HEAT PUMP

Research Paper Open Access

International Journal of Latest Research in Science and Technology Vol.3 Issue 5, pp 18-25,Year 2014

USING HEAT FROM LOW-TEMPERATURE ENERGY SOURCES BY MEANS OF A HIGH-TEMPERATURE HEAT PUMP

Milovan Jotanović, Vladan Mićić, Evgen Torhač, Darko Goričanec

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Received : 01 October 2014; Accepted : 29 October 2014 ; Published : 31 October 2014

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Abstract

In the paper '' Using Heat from Low-Temperature Energy Sources by means of a High-Temperature Heat Pump'' the authors have synthesized the results of their researches into exploiting heat from low-temperature energy sources (geothermal water, waste heat from process industry,...) They have presented method for obtain a clean energy for heating residential units using high-temperature heat pumps which use different refrigerants (working fluids) in their operation. These pumps developed with the development of an innovative idea in 2010 and they use heat from low-temperature secondary energy sources (45ºC) for district heating of residential units with the temperature of 90/70ºC. A series of refrigerants which can be used as working fluids in these pumps were analyzed. The paper presents a mathematical model for a single stage heat pump which the authors use for determining performance characteristics of the heat pump, together with a simulation of the operation of the pump using two different mixtures of working fluids. The authors show in detail the mutual dependences among the key performance characteristics of a high temperature heat pump and they determine the optimal type of a high temperature heat pump as well as of the refrigerant. They also present the working conditions of this pump (evaporation temperature, condensation temperature) at which its operation is financially justifiable.

Key Words   
High temperature heat pump, heat transfer, mathematical model, refrigerating agents

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To cite this article

Milovan Jotanović, Vladan Mićić, Evgen Torhač, Darko Goričanec , " Using Heat From Low-temperature Energy Sources By Means Of A High-temperature Heat Pump ", International Journal of Latest Research in Science and Technology . Vol. 3, Issue 5, pp 18-25 , 2014

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