季节性冰雪蓄冷技术在建筑空调中的应用

为研究季节性冰雪蓄冷技术在建筑空调中应用的可行性,在稳态传热及集总参数分析方法基础上,建立了圆柱形地下储库冰雪储存与释冷过程的数学模型,并得出模型的分析解。运用该模型对北京市商场、办公楼、宾馆和医院四类典型建筑应用季节性冰雪蓄冷技术进行空调供冷的特征参数进行了计算。提出了冰雪蓄冷匹配系数的定义,分析了其在不同储冰初始温度及年平均单位面积冷负荷条件下的变化规律。计算表明,冰雪蓄冷匹配参数主要受年平均单位面积冷负荷影响,而受储冰初始温度影响较小。

Application of seasonal snow and ice thermal storage technology inbuilding air conditioner

To study the feasibility of seasonal snow and of ice thermal storage technolog y applied in buildingair condit ioner , the mathemat ical model of a cylindrical underg round storag e snow and ice thermal storageand release w as established based o n the steady-state heat t ransfer and lumped parameter analysismetho d, and the analyt ical solut ion of the model presented. T he coo ling characterist ic parameters werecalculated and analyzed with the seaso nal snow and ice storag e technique in four typical building s w hichw er e department s, of fices, hotels and hospitals in Beijing . T he matching coef f icient o f snow and ice thermalstorag e w as defined and the performance under dif ferent init ial ice stor ag e temper atures and the annualaverage cool ing load per unit area w ere analyzed. T he result s show that the matching coef ficient of snowand ice thermal storag e is mainly af fected by the annual average co oling load other than the initial ice storagetemperature.