| Firstly, the article talked about the variable refrigerant volume centralized air-conditioning system which people believe could reduce building energy consumption greatly. Then, brought forward a concept named "Equivalent Length", and calculated the energy consumption per unit terminal refrigerating effect accoding to its different values in variable occasions.Secondly, it partitioned all kinds of district cooling systems into three types and discussed the primary pump's volume identical and second pump's flow variable district cooling system about these three types. The paper splitted the complicated types into several parts, in order to simplify calculation.Then, built a mathematical model, bringing forward a concept named "Duct's Elevated Temperature Factor" once again, in order to work out the energy consumption on water delivering, and calculated those types' energy consumption per unit terminal refrigerating effect. Compared with the former, the optimal radius of each district cooling systems could be easily got.At last, the article discussed the differences among diverse ice storage district cooling systems, finally, fixed on using the refrigerator up series circuit district cooling system combined with the water from HuangPu river used as the cooling water in 2010 ShangHai EXPO energy center's construction, because of its super performance when it is wholly compared with traditional system. |
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