基于建筑热工分区的高效制冷机房系统能效比评价分区研究
Study on energy efficiency ratio evaluation zoning of high-efficiency refrigeration room system based on building thermal zoning
摘要：
基于建筑热工分区区划指标和室外湿球温度分布情况，选用供冷季室外平均湿球温度作为制冷机房系统能效比评价分区的区划指标，对全国5个建筑热工分区共计270个气象站点，采用4个能效比分级冷源系统，构建了多个制冷机房系统能效比计算模型。结果表明：制冷机房系统能效比均随供冷季室外平均湿球温度的降低而提高；相同热工分区内，制冷机房系统能效比最大相差14.5%。为使制冷机房系统能效比评价更加合理公平，以供冷季室外平均湿球温度为区划指标，以将各建筑热工分区中制冷机房系统能效比和各子区内制冷机房系统能效比的达标偏离率均控制在10%以内为原则，进行制冷机房系统能效比子区划分，得到了高效制冷机房系统能效比评价分区。综合考虑能效比评价分区及不同地区经济水平差异，得到了高效制冷机房系统能效比分级评价标准。
Abstract：
The average outdoor wet bulb temperature in the cooling season is selected as the zoning index for evaluating the energy efficiency ratio of refrigeration room systems based on the building thermal zoning index and the outdoor wet bulb temperature distribution. A number of calculation models of the energy efficiency ratio of refrigeration room systems are constructed for 270 meteorological stations in 5 thermal zones, using 4 graded energy efficiency ratio cold source systems. The results show that the energy efficiency ratio of the refrigeration room system increases with the decrease of average outdoor wet bulb temperature in the cooling season, and the maximum relative difference of the energy efficiency ratio of the refrigeration room system in the same thermal zone is 14.5%. In order to make the evaluation of the energy efficiency ratio of the refrigeration room system more reasonable and fair, using the average outdoor wet bulb temperature in the cooling season as the zoning index, and control ling the up-to-standard deviation rate of the energy efficiency ratio of the refrigeration room system in each building thermal zone and that in each sub-region within 10% as the principle, this study divides the energy efficiency ratio sub-region of the refrigeration room system, and obtains the evaluation zoning of the energy efficiency ratio of the high-efficiency refrigeration room system. The grading evaluation standard of the energy efficiency ratio of the high-efficiency refrigeration room system is obtained by comprehensively considering the evaluation zoning of energy efficiency ratio and the difference of economic level in different regions.
Keywords:high-efficiencyrefrigerationroomsystem;buildingthermalzoning;averageoutdoorwetbulbtemperatureincoolingseason;systemenergyefficiencyratio;evaluationindex;up-to-standarddeviationrate;sub-region