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Energy-saving Research in Data Centre with Fresh-air System

Author: JiangYaJing
Tutor: LiuGang
School: Donghua University
Course: Heating,Gas Supply, Ventilation and Air Conditioning Engineering
Keywords: Communications room Fresh air system Energy-saving Airflow
CLC: TU834
Type: Master's thesis
Year: 2011
Downloads: 168
Quote: 1
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Abstract


With the rapid development of the communications industry, server, increasing the amount of cooling of electronic components. Communications room on the indoor environmental requirements, reasonable design airflow in order to ensure long-term stable operation of the equipment. Outdoor natural source of cold introduction of the indoor, natural cooling source can be used effectively to reduce the running time of the air conditioner, theoretically possible to save energy, extend the service life of the air-conditioning compressor, saving the cost of doing business, saving power resources. Combined with reasonable and effective air supply to meet the communications equipment needed to ensure that the room temperature, humidity, cleanliness. In this paper, the room air-conditioning program for economic and technical analysis and comparison, indicating that fresh air is introduced directly into the system can effectively reduce air conditioning energy consumption of the communications room, with good economic and social benefits. The use of fluid dynamics simulation software FLUENT simulation method to simulate the communications room and field data verification showed that it is feasible to use FLUENT simulation in the communications room, analog data reliably meet the actual situation. From reducing the supply air temperature brought about by the energy-saving effect, the different structure of the air dissection, to adjust the position of the return air and under different air supply to simulate, analyze various conditions of temperature and velocity field, and thus The structure of the engine room and on the air program optimization. The results showed that the air volume can be reduced by lowering the supply air temperature, and to reduce the air volume, which reduces the energy consumption of the fan, can achieve to reduce the input power, the energy-saving purpose; poor uniformity of the prototype room air interlayer, by simulating on structural adjustment: when the outlet from both sides of the boundary distance of 2.8m, the outlet temperature of the air interlayer most uniform; simulation results show that, in three different communications room under air supply, bottom feed on the air compared to the send side back and in the form of hot and cold aisles can be more efficient cooling rack server, reduce the temperature of the indoor environment. The rapid development of the network server, how to provide better airflow for future high-power heat server is a problem worthy of study. The end of this article a new type of cold pool equipment room heat, simulation analysis shows that the program can effectively cooling the server, to ensure the safe operation of the engine room. The program needs to be in use in the actual project to verify its reliability.

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CLC: > Industrial Technology > Building Science > Housing construction equipment > Air-conditioning, heating, ventilation,and its equipment > Ventilation, dust,air purification,dehumidification
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