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Alternative refrigerants for household refrigerators.

Number: pap. 2129

Author(s) : STRAUB M.

Summary

In recent decades, the energy consumption of household appliances has been reduced continuously. This reduction leads to a change in the working conditions of the cooling circuit of domestic refrigerators and freezers. For instance the introduction of fans at the heat exchangers leads to an increased evaporating temperature and a decreased condensing temperature during normal use. In addition, the demand for cooling capacity is lower than in the past, due to improved insulation of the appliances (e.g. improvement of the gaskets, introduction of vacuum insolation panels). Since the beginning of the 1990s it is common in Europe to use R600a (Isobutane) as a refrigerant in household appliances. It is worth to evaluate, if R600a is still the most suited refrigerant for the changed boundary conditions. In this paper, a theoretical analysis of more than 100 refrigerants is carried out to identify possible alternative refrigerants for household appliances. The most promising refrigerants are tested inside different domestic appliances. Apart from the main scope of reducing the energy consumption, the impact on the environment (ozone depleting potential / global warming potential / toxicity) is taken into consideration. As a result, it is feasible to reduce the energy consumption in accordance with the European standard DIN EN 62552:2013-10 (DIN, 2013) and the EU-directive 1060/2010 (European Parliament and Council, 2010) up to 5% by using an alternative refrigerant. The impact of this alternative refrigerant on the environment is similar to the one of isobutane.

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Pages: 10

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Details

  • Original title: Alternative refrigerants for household refrigerators.
  • Record ID : 30024410
  • Languages: English
  • Source: 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2018/07/09

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