Passive heat pipe natural cooling multi-connection refrigerating system and control method thereof

Abstract

The invention relates to a passive heat pipe natural cooling multi-connection refrigerating system and a control method thereof. The refrigerating system comprises a multi-connection heat pipe evaporator module and a concentrated heat pipe cold source module; the multi-connection heat pipe evaporator module comprises at least one heat pipe evaporator; the concentrated heat pipe cold source modulecomprises a compression unit, a first bypass branch pipe, a heat pipe condenser, a heat exchange medium pressurizing unit and a second bypass branch pipe; the compression unit is connected with the heat pipe evaporators and used for compressing a heat pipe heat exchange medium; the first bypass branch pipe is connected with the compression unit in parallel; the heat pipe condenser is connected with the compression unit and the first bypass branch pipe and used for cooling the heat pipe heat exchange medium; the heat exchange medium pressurizing unit is connected with the heat pipe evaporatorsand the heat pipe condenser and used for conveying the heat pipe heat exchange medium cooled by the heat pipe condenser to the heat pipe evaporators; and the second bypass branch pipe is connected with the heat exchange medium pressurizing unit in parallel. According to the passive heat pipe natural cooling multi-connection refrigerating system and the control method thereof, outdoor natural coldsource refrigerating is fully utilized, and the energy saving advantage is obvious; meanwhile, heat pipe phase change heat exchange is adopted, and the heat exchange efficiency is high; and the heat pipe evaporation tail end is flexibly designed, scattered design is conducted according to the requirements, and the refrigerating system is not limited by the spatial structure.

Description

technical field [0001] The invention relates to the technical field of refrigeration, and more specifically relates to a passive heat pipe natural cooling multi-connection refrigeration system and a control method thereof. Background technique [0002] At present, traditional single cooling solutions are adopted in many data centers, such as air-cooled direct expansion type, chilled water type, and air-cooled dual-cooling 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. The traditional chilled water cooling solution has a relatively high construction cost, and it is diffi...

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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. The traditional chilled water cooling solution has a relatively high construction cost, and it is difficult to configure redundant hosts, and there are many security nodes to be controlled;

[0006] 4. 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

Under this background, various green energy-saving schemes are also spawned; such as air-space indirect evaporative cooling schemes, fresh air cooling schemes, indirect evaporative cooling schemes using water as the medium, etc.; but the current green energy-saving cooling scheme applications mainly exist as follows Disadvantages: 1. The air-to-air heat exchange cooling scheme is adopted, the heat exchange efficiency is relatively low, and the size of the same cooling capacity is relatively large;

[0008] 2. Fresh air cooling scheme, fresh air cleaning treatment and post-maintenance costs are relatively high;

[0009] 3. Indirect evaporative cooling or direct evaporative cooling with water as the medium, the cost of water treatment and air treatment is relatively high

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