Passive heat pipe natural refrigerant machine room air-conditioning system and control method thereof

Abstract

The invention related to a passive heat pipe natural refrigerant machine room air-conditioning system and a control method thereof. The machine room air-conditioning system comprises a passive heat pipe circulation system and an auxiliary cold source system. The passive heat pipe circulation system comprises at least one heat pipe evaporator, a heat pipe condenser and a heat transferring medium pressurization unit, wherein the heat pipe evaporators are arranged in a room, the heat pipe condenser is connected with the heat pipe evaporators and used for cooling a heat pipe heat transferring medium, the heat transferring medium pressurization unit is connected with the heat pipe evaporators and the heat pipe condenser, and the heat transferring medium pressurization unit is used for transporting the heat pipe heat transferring medium cooled by the heat pipe condenser to the heat pipe evaporators. The auxiliary cold source system comprises a heat exchanger which is arranged outdoors, the heat exchanger can be used for heat exchange between the heat pipe heat transferring medium and an auxiliary cold source, and the heat exchanger comprises a cold source inlet end and a cold source outlet end which are connected with the auxiliary cold source; a heat transferring medium inlet end of the heat exchanger is connected with an outlet of the heat pipe condenser, and a heat transferring medium outlet end of the heat exchanger is connected with an inlet of the heat transferring medium pressurization unit. According to the passive heat pipe natural refrigerant machine room air-conditioning system, the natural cold source can be fully utilized for refrigeration, and energy conservation of the machine room is achieved; meanwhile, heat is transferred by using heat pipe phase change, andthe heat transferring efficiency is high.

Description

technical field [0001] The invention relates to the technical field of refrigeration, and more specifically relates to a passive heat pipe natural cooling machine room air-conditioning system and a control method thereof. Background technique [0002] At present, traditional cooling solutions are adopted in many data centers, such as air-cooled direct expansion type, chilled water type, and air-cooled dual cold source type. Traditional cooling solutions mainly have the following deficiencies: [0003] 1. The air-conditioning units of the traditional solution unit are relatively scattered, occupy a large space, and have a single terminal type; [0004] 2. Cannot make full use of the natural cooling source under the low temperature outdoor conditions, and it is difficult to meet the construction requirements of green and energy-saving computer rooms; [0005] 3. In the case of outdoor low temperature, the chilled water coil is easy to freeze and cannot carry out the risk of ...

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Problems solved by technology

[0003] 1. The air-conditioning units of the traditional solution unit are relatively scattered, occupy a large space, and have a single terminal type;

[0004] 2. Cannot make full use of the natural cooling source under the low temperature outdoor conditions, and it is difficult to meet the construction requirements of green and energy-saving computer rooms;

[0005] 3. In the case of outdoor low temperature, the chilled water coil is easy to freeze and cannot carry out the risk of normal water supply cycle

[0007] 1. Air-to-air heat exchange indirect cooling scheme is used, the heat exchange efficiency is relatively low, and the same type of cooling capacity is relatively large in size; 2. Fresh air cooling scheme, fresh air cleaning treatment and post-maintenance costs are relatively high

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