A transcritical carbon dioxide hot air blower and its performance optimization control method

Abstract

The invention discloses a transcritical carbon dioxide hot air blower and its performance optimization control method. The hot air blower adopts the structural configuration of a two-stage gas cooler and an intermediate regenerator, and the heat load of the second-stage gas cooler is the first-stage gas cooling. One-third of the compressor, using the heat from the high-pressure side to increase the discharge temperature of the compressor, so as to meet the needs of heat exchange, realize the production of hot air under the condition of high ambient temperature and higher outlet air temperature, and at the same time reduce the The corresponding exhaust pressure enhances the reliability of the system. The performance optimization control method proposed takes into account the ambient air temperature, the set air outlet temperature and the efficiency of the regenerator, which can meet the needs of different operating conditions and variable operating conditions, and has wide applicability.

Description

technical field [0001] The invention belongs to the technical field of heat pumps, in particular to a transcritical carbon dioxide hot air blower and its performance optimization control method. Background technique [0002] As the greenhouse effect continues to intensify, in recent years, the general public, research institutions and government departments have paid more and more attention to the major issue of global warming. In the field of refrigeration and heat pumps, HFC refrigerants that have no ozone depleting effect are now widely used. However, since HFC refrigerants have a high global warming potential (GWP) and have a certain impact on global warming, further research and substitution work on environmentally friendly refrigerants are in full swing. carbon dioxide (CO 2 ) as a natural working medium, its ozone depletion potential (ODP) is 0, and its global warming potential (GWP) is 1, which has outstanding environmental friendliness. CO 2 As an inorganic comp...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a transcritical carbon dioxide hot air blower and its performance optimization control method, to solve the above-mentioned transcritical carbon dioxide hot air blower at a higher ambient temperature (10 ~ 40 ℃), high air temperature (60 ~ 90°C) under the condition of insufficient exhaust gas temperature, at the same time optimize the control of performance

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