Open AccessCO2 high temperature heat pump – a promising solution
Author(s) -
O. Talaba,
Daniel Dima,
V. Buiuc,
Claudia Ioniţă,
Mariana-Florentina Ştefănescu,
Alexandru Şerban,
Alexandru Dobrovicescu
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/997/1/012157
Subject(s) - heat pump , refrigerant , exergy , schematic , process engineering , waste heat , water heating , environmental science , hybrid heat , heat pump and refrigeration cycle , thermodynamics , waste management , nuclear engineering , heat exchanger , engineering , mechanical engineering , electrical engineering , physics
The study focuses on obtaining hot water above 80°C for industrial purposes. Compared to the electrical heating the use of a heat pump appears much more efficient. A comparative analysis using different refrigerants is carried out. The cold source is waste heat from an industrial process. The exergetic analysis reveals the advantages and weaknesses of using CO 2 as refrigerant. Based on the exergy destruction concept several schematics of two-stage CO 2 Heat Pumps are considered. For high temperature water heating, a CO 2 Heat Pump system represents a promising solution.