A dual-source commercial air conditioner and its working method

Abstract

The invention discloses a dual-source commercial air conditioner and a working method. The device comprises: a steam compression system, an economizer system and a hot gas defrosting system. In the present invention, the compressor is directly driven by a direct-fired internal combustion engine, which can avoid power transmission loss and effectively improve energy utilization; the air source and water source are coupled in the form of a parallel air-cooled heat exchanger and a shell-and-tube heat exchanger Heat pump technology introduces a medium-temperature evaporator on the basis of economizer air supply, improves hot gas bypass defrosting technology, realizes cascaded utilization of waste heat energy while strengthening intermediate air supply of compressors, and effectively improves the heating capacity and COP of air conditioners; The characteristics of the environment change in winter and summer. The air conditioner can realize the multi-working mode operation of air source type, waste heat type heating, air-cooled type, and water-cooled type refrigeration, and improve the working reliability of the air-conditioning device. The energy efficiency ratio is 3-5 at present. On a basic basis, it can be increased by 10% to 15%.

Description

technical field [0001] The invention relates to a commercial air conditioner, more specifically, a dual-source commercial air conditioner. It belongs to the field of refrigeration and air-conditioning engineering. Background technique [0002] While air-conditioning devices provide us with a comfortable living environment, their energy consumption is also increasing year by year. Under the development situation of "new and old kinetic energy transformation" and "low-carbon energy saving", it is more and more important to develop new low-energy and high-efficiency air-conditioning devices; and In order to realize the energy saving and consumption reduction of air-conditioning devices, domestic and foreign refrigeration and air-conditioning enterprises and colleges and universities have carried out a large number of innovative scientific research, such as patent application number: CN200720058740.6, a utility model patent named "high-efficiency multi-functional air-conditionin...

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the technical deficiencies of high energy consumption and low energy of existing commercial air conditioners. While realizing the coupled heat pump system of air source and water source heat exchangers, the invention introduces heat energy cascade utilization and intermediate air supply technology of compressors, relying on double parallel air-cooled heat exchangers Heater + hot gas bypass defrosting technology solves the difficulty of defrosting air-cooled heat exchangers and realizes multiple high-efficiency cooling and heating operating modes for air conditioners

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