Heat pipe steam compression composite type refrigeration system for air conditioners and provided with ejector

Abstract

The invention relates to a heat pipe steam compression composite type refrigeration system for air conditioners and provided with an ejector. The outlet of a variable frequency compressor is divided into two paths, one path passes through a flow regulating valve and then is connected with the inlet of a nozzle of the ejector, the outlet of the ejector is connected with the inlet of an evaporator; the other path passes through a solenoid valve and then is connected with the inlet of a condenser, the outlet of the condenser is connected with the inlet of a liquid storage device, the outlet of the liquid storage device is divided into two paths, one path passes through an electronic expansion valve and then is connected with the inlet of the evaporator, the other path is connected with the ejection inlet of the ejector; the outlet of the evaporator is divided into two paths, one path is connected with the inlet of the variable frequency compressor, the other path passes through the flow regulating valve and then is connected with the inlet of the condenser; the system comprises two working modes including a compression refrigeration mode and a heat pipe cooling mode. Addition of mechanical devices is not needed, the refrigerant forced circulation of the heat pipe loop in the heat pipe cooling mode is achieved, the reliability of cooling of an outdoor natural cold source is ensured, and the development of the data center/communication base station (or machine room) air conditioner energy-saving technology is actively promoted.

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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