Design and analysis of district heating systems using waste heat from data centers

Collecting waste heat from data centers for district heating is an important way to improve energy efficiency and realize clean heating in winter.In this paper,a long-distance district heating system suiting for data center is proposed.Multi-stage heat pumps are installed in the heat source and sink to increase the temperature difference of network,and heat storage devices are used to ensure the safety of data center and district heating system,so as to significantly improve the utilization rate of waste heat in data center.Taking a data center in Zhangjiakou as an example,the initial investment of the system is 50.21 Yuan/m2,the operating cost is 26.37 Yuan/GJ,and the payback period is about 5.31 years,which has good economic,energy saving and emission reduction effects.