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What is Refrigerant

Chapter 6
Handbook of Research on Advances and Applications in Refrigeration Systems and Technologies
Are all the fluids with a high capacity to “absorb” large amounts of thermal energy during the evaporation process at low temperature, characteristic that makes it ideal for use in refrigeration systems operating by a refrigeration vapour compression cycle.
Published in Chapter:
Current and Future Trends of Refrigerants Development
M. V. Duarte (University of Beira Interior, Portugal), L. C. Pires (University of Beira Interior, Portugal), P. D. Silva (University of Beira Interior, Portugal), and P. D. Gaspar (University of Beira Interior, Portugal)
Copyright: © 2015 |Pages: 53
DOI: 10.4018/978-1-4666-8398-3.ch006
Abstract
In this chapter is addressed the thematic of refrigerants: its historical evolution; properties; legislation applied in the area and future trends. The first refrigerant being marketed on a large scale was ethyl ether (R610), in 1834. Since then, the evolution of the utilized refrigerants was stimulated, initially due to constructive issues in the refrigeration system and later to environmental issues. This evolution may be divided into four generations: 1st use of any fluid that worked; 2nd safety and durability of the equipment; 3rd ozone layer protection and 4th increase of global warming concerns. During the process of evolution many refrigerants were tested to understanding of their properties. Currently, environmental concerns are taken as guide in the search for new refrigerants. The most promising refrigerants to be used in future are the HFEs, HFOs and HFCs with low-GWP, natural refrigerants and blends between (HCs/HFCs and HFCs/HFOs) refrigerants.
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Chapter 19
Expansion Power Recovery in Refrigeration Systems
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Chapter 13
Study on Cooling Heat Transfer of Supercritical Carbon Dioxide Applied to Transcritical Carbon Dioxide Heat Pump
A substance or mixture, usually a fluid, used in a heat pump and refrigeration cycle. In most cycles it undergoes phase transitions from a liquid to a gas and back again.
Published in Chapter: Study on Cooling Heat Transfer of Supercritical Carbon Dioxide Applied to Transcritical Carbon Dioxide Heat Pump; From: Handbook of Research on Advancements in Supercritical Fluids Applications for Sustainable Energy Systems
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Chapter 7
Retrofitting of R404a Commercial Refrigeration Systems with R410a and R407f HFCs Refrigerants
Primary working fluid used to produce a cooling effect in a refrigeration system. All refrigerants extract heat at low temperature and low pressure during evaporation and reject heat at high temperature and pressure during condensation.
Published in Chapter: Retrofitting of R404a Commercial Refrigeration Systems with R410a and R407f HFCs Refrigerants; From: Handbook of Research on Advances and Applications in Refrigeration Systems and Technologies
Full Text Chapter Download: US $37.50 Add to Cart
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