A Heat Pipe Vapor Compression Composite Refrigeration System with Ejector for Air Conditioning

Abstract

A heat pipe vapor compression compound refrigeration system for air conditioners with an ejector. The outlet of the frequency conversion compressor is divided into two channels. After passing through the solenoid valve, it is connected to the inlet of the condenser, and the outlet of the condenser is connected to the inlet of the liquid receiver. The outlet of the liquid receiver is divided into two routes, one is connected to the inlet of the evaporator after passing through the electronic expansion valve, and the other is connected to the ejector inlet. The outlet of the evaporator is divided into two routes, one of which is connected to the inlet of the variable frequency compressor; the other is connected to the inlet of the condenser after passing through the flow regulating valve; the system includes two working modes: compression refrigeration mode and heat pipe cooling mode; Under the conditions of the equipment, the forced circulation of the refrigerant in the heat pipe circuit under the heat pipe cooling mode is realized, which ensures the reliability of cooling by using the outdoor natural cold source, and plays a positive role in promoting the development of data center / communication base station (or computer room) air conditioning energy-saving technology. .

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a heat pipe vapor compression composite refrigeration system for air conditioning with an ejector used for data center / communication base station (or machine room) air conditioning. Background technique [0002] In recent years, the rapid growth of my country's data centers and communication base stations has brought about a sharp increase in energy consumption of data centers and communication base stations, which poses challenges to the continuous innovation of data center cooling technology and the improvement of cooling energy efficiency. Due to the high heat generation density of data centers / communication base stations (or computer rooms), air conditioners are used to cool down in summer and winter to ensure their safe and reliable operation, which also greatly increases the energy consumption of air conditioners. Therefore, how to effectively reduce th...

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Problems solved by technology

However, when the separated gravity heat pipe is arranged in this system, the position of the condenser must be higher than that of the evaporator, and the refrigerant driving force of the separated gravity heat pipe is limited. In some cases, the refrigerant of the heat pipe circuit is difficult to rely on gravity Natural circulation, resulting in the failure of the natural cooling method

In order to overcome the above disadvantages, there is a proposal to use a refrigerant liquid pump to drive forced circulation in the heat pipe circuit, and to a certain extent, the problem of refrigerant circulation in the system

However, the use of additional auxiliary refrigerant liquid pumps will also increase the risk of refrigerant leakage in the entire system, and the cost of the system will also increase significantly

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