Transcritical carbon dioxide air heater and performance optimization control method thereof

Abstract

The invention discloses a transcritical carbon dioxide air heater and a performance optimization control method thereof. The air heater adopts a structure configuration of two-stage gas coolers and amiddle regenerator, the thermal load of the second-stage gas cooler is one third of that of the first-stage gas cooler, the discharge temperature of a compressor is improved by utilizing heat on a high pressure side so that hot air is produced under the working conditions of a high environment temperature and a high air outlet temperature when a heat exchange need is met, meanwhile corresponding discharge pressure is lowered, and the reliability of a system is strengthened. According to the performance optimization control method, the environmental air temperature, a set air outlet temperature, and regenerator efficiency are considered, the need of different operating working conditions and variable working conditions can be met, and the adaptability is high.

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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