The cloud computer room on the sixth floor of a public transportation dispatching command center in Chaoyang District of Beijing is investigated on its air conditioning system,and the data of electricity and electricity charges.In view of the existing problems,two reconstruction schemes are proposed,including installing the air-cooled fluorine pump cooling module,making full use of natural cold source,installing high-pressure atomizing spray system,and improving outdoor cooling conditions.Based on the 15-year contract energy management model,this paper calculates the dynamic investment recovery period of the project and judges the investment recovery risk of the project.The calculation results show that the average annual power saving of the computer room is 306.55 MWh,the energy saving rate is 35.25％,and the PUE value of the retroffited computer room is 1.58.The project investment is 1.518 million yuan,the internal rate of return after tax is 13.18％,and the dynamic investment payback period is 7.22 years.The energy-saving and environmental protection benefits and economic benefits are good,so as to provide reference for the upgrading of similar computer rooms in the park and even in Beijing.
energy management contractcomputer roomenergy-saving retrofitnatural cold sourcedynamic payback period of investment
NETL
NSTL
万方数据
