The Use of Formaldehyde as a Refrigerant in Heat PumpsAnita Kovač Kralj*
University of Maribor, Faculty of Chemistry and Chemical Engineering, Smetanova 17, Maribor, Slovenia
- Corresponding Author:
- Anita Kovač Kralj
University of Maribor
Faculty of Chemistry and Chemical Engineering
Smetanova 17, Maribor, Slovenia
Tel: +441772 201201
E-mail: [email protected]
Received Date: November 28, 2014; Accepted Date: January 24, 2015; Published Date: February 05, 2015
Citation: Kralj AK (2015) The Use of Formaldehyde as a Refrigerant in Heat Pumps. J Fundam Renewable Energy Appl 5:152. doi:10.4172/20904541.1000152
Copyright: © 2015 Kralj AK. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
A heating system sometimes needs a low temperature source such as low-pressure steam. The need for lowertemperature heat can be replaced using a heat pump. A heat pump is a machine or device that moves heat from one location to another location mechanically. Refrigerant within a heat pump is used as the working fluid. Different standard refrigerants (such as chlorofluorocarbons, hydro-fluorocarbon isobutene …) are cycled throughout the heat pump’s system. When replacing the standard refrigerant (1,1,1,2-tetrafluoroethane; R-134a) within the heat pump with formaldehyde under the same compressor power, the efficiency should increase. Heating with low pressure steam can be replaced by a heat pump under optimised compressor power (5 bar) by using formaldehyde as a refrigerant during the existing process. The use of formaldehyde as a refrigerant can enlarge the efficiency of a heat pump’s system by about 80 % during an existing process.