Optimization Design of Chiller Capacity Allocation for Supply Cooling System in Energy Station
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摘要: 对能源站供冷系统蒸汽溴化锂机组和电制冷机组的冷源优化配置进行分析研究。基于DeST软件建立某区域内若干典型建筑物的能耗模拟模型,通过模拟计算得到能源站供冷系统总的全年逐时负荷。综合考虑初投资及年运行费用,采用全寿命周期成本评价指标法,分析研究能源站供冷系统中的蒸汽型双效溴化锂与电制冷冷水机组容量的优化分配,通过计算得到典型工况下得到全寿命周期成本最低的溴化锂制最优供冷比例为61.8%。在此基础上,进而分别探讨电制冷主机COP及蒸汽价格变量因子对能源站供冷系统的制冷主机容量配比的影响规律,得出溴化锂机组最优配比随电制冷主机COP值升高而下降,随蒸汽价格升高而下降的基本规律。研究成果可为能源站供冷系冷源的配置选型提供参考。Abstract: Optimization design of chiller capacity allocation between the steam double effect Libr unit and electricity-powered chiller has been analyzed in supply cooling system in energy station. And several simulation models had been set up for several typical buildings based on DeST software, and the all-around year hourly cooling load had been calculated. Considering the initial investment and the annual operating cost, the life cycle cost (LCC) method had been adopted to analysis the optimization design of chiller capacity allocation between steam double effect LiBr unit and electricity-powered chiller for the energy station. And the calculated results shown that the optimized LiBr unit ratio is 61.8% in the typical condition. Then, the effects of COP of electricity-powered chiller and steam price on the chiller capacity allocation had been researched, the results shown that the optimized LiBr unit ratio is decrease along with the increase of the COP, and is also decrease along with the increase of the steam price. And this paper can provide the reference for optimization design of chiller capacity allocation for supply cooling system in the similar energy station.
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Key words:
- life cycle cost /
- capacity allocation /
- energy station /
- steam double effect Libr unit
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