ASSESSMENT OF IRREVERSIBLE HEAT PUMP-BASED HEATING SYSTEMS

Autor/autori: Gheorghe DUMITRAS̀§CU, Michel FEIDT, *Andrei DUMENCU, Bogdan HORBANIUC, Marius Vasile ATANASIU


Abstract: The paper compares the performances of two irreversible heat pump-based heating systems operating in variable conditions and, controlled by the variable temperatures of the heat sources (air or geothermal) and the variable heat loss of the heated space depending on the temperature of the environment. The first irreversible heating system uses an air (environment) to air (heated space) heat pump and, the second one employs a geothermal heat pump. For the temperature of the environment was adopted a scenarios along the heating period (winter) and for the geothermal heat source was employed an analytical solution describing the underground soil temperature evolution in time. The assessment of two irreversible heat pump-based heating systems evaluates the heat rates, the powers and, the COP by employing the entropy balance equation of the whole heat pump-based heating system.

Keywords: entropy balance equation; heat pump-based heating system

 

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