以水/溴化锂为工质的潜能蓄冷空调系统的经济分析

本文建立了蓄冷空调系统经济分析的计算模型,并以某办公楼为例,分别计算了水/溴化锂潜能蓄冷空调系统、冰蓄冷空调系统及常规空调系统的初投资、运行费用及经济指标.计算结果显示,在同样的工作条件、电价结构及银行贷款利率情况下,水/溴化锂潜能蓄冷空调具有一些明显的优点.例如,对该办公楼在蓄冷率均为0.7时进行经济分析计算,得到水/溴化锂潜能蓄冷空调系统初投资增加额为347万元,比冰蓄冷系统的初投资增加额少253万元;年费用节约量为50万元,比冰蓄冷系统年运行费用节约量多22万元;静态投资回收期为7年,比冰蓄冷系统静态投资回收期短13年.所以可以说,水/溴化锂潜能蓄冷空调系统具有更好的经济可行性.

The Economic Analysis of Potential Storage Air Condition System Using H2O/LiBr as Working Fluid

The purpose of the paper was to establish the calculation model of economic analysis of cool storage air conditioning. Using the model and taking an office building for an example, the original investment, the moving cost and the economic target is individually calculated in accordance with the potential storage air conditioning system (PSACS) using H2O/LiBr as working fluid, the ice storage air conditioning system (ISACS) as well as the common air conditioning system (CACS). The results indicate that the PSACS using H2O/LiBr as working fluid has some remarkable advantages under the same working condition, the electric price structure and the loan interest rate. For example, the increasing amount of the original investment of the PSACS is 347millions yuan, which is 253 millions yuan less than that of ISACS when the rate of cool storage is 0.7, and the decreasing amount of annual moving cost of PSACS is 50 millions yuan, being 22 millions yuan more than that of the ISACS. Besides, the static investment recycle period of the PSACS is 7 years, while that of ISACS is 20 years. So it can be concluded that the PSACS using H2O/LiBr as working fluid possesses wonderful economic feasibility.