区域供冷系统中不同类型制冷主机设计容量的优化分配

本文依据制冷主机系统寿命周期费用最小的原则，建立了区域供冷系统中不同类型制冷主机之间设计容量分配的优化模型。从实例计算的结果，可得出以下结论：在电价和蒸汽价格确定的情况下，对于冷负荷一定的某区域供冷系统，当采用电制冷主机和吸收式制冷主机作为冷源时，这两种制冷主机之间的设计容量分配存在最优值；电价对制冷主机设计容量的优化分配影响很大，蒸汽价格的影响相对较小；蒸汽的供应量是否有限制，对制冷主机设计容量的优化分配有较大的影响。

Optimal Distribution of Design Capacity among Different Type Chiller in District Cooling System

An optimal model to distribute the design capacity among different type chiller in district cooling system was proposed according to the principle of minimizing the life cycle cost of chiller system. By the calculation of a practical case, it is concluded that there is an optimal distribution of design capacity between the electrical and absorb chiller in a certain district cooling system when the price of electricity and steam is determinate and these two type of chiller are adopted as the cooling source. It is also concluded that the influence of electricity price is great and steam price is relatively small for the optimal distribution result, and the supply of the steam is limitary or not is also an important factor for the optimal distribution result.