夏季空调室外计算参数的修正研究

本文对5个典型城市建筑在"干湿球温度分别统计,干球温度为基础耦合同期湿球温度,湿球温度为基础耦合同期干球温度,干湿球温度之和与湿球温度分别统计"四种参数选取方法条件下的空调设计负荷及典型气象年夏季逐时冷负荷分别进行计算,以最大逐时冷负荷为指标,获得该地区适用的空调室外设计参数,进而对干、湿球温度分别统计所得的参数做出修正。结果表明,计算湿球温度的变化对空调设计负荷的影响较大。"干球为基准耦合湿球温度"的参数选取方法适用于干空气能资源较丰富的地区,"湿球为基准耦合干球温度"的参数选取方法适用于干空气能资源较贫乏的地区,给出了五个区域的室外计算参数修正系数。

Research on Correction of Outdoor Design Parameters of Summer Air Conditioning

This paper compared and analyzed four methods for selecting outdoor calculation parameters of air conditioning: The dry and wet bulb temperatures were counted separately, the wet bulb temperature was coupled based on the dry bulb temperature, the dry bulb temperature was coupled based on the wet bulb temperature, the sum of the dry and wet bulb temperature and the wet bulb temperature were counted separately. The air conditioning design load under the conditions of four parameter selection methods, and the hourly cooling load of typical meteorological year in summer, of five typical urban buildings were be calculated. The maximum hourly cooling load as an index,the suitable outdoor design parameters of air conditioning in this area were obtained. Further, the parameters obtained by counting the dry bulb temperature and the wet bulb temperature separately were revised. The results show that, the variation of wet bulb temperature has a greater influence on the design load of air conditioning. The parameter selection method of "dry bulb as reference coupled wet bulb temperature" is suitable for areas with abundant dry air energy resources. The parameter selection method of "wet bulb as reference coupled dry bulb temperature" is suitable for regions with poor dry air energy resources. The correction coefficients of outdoor calculation parameters in five regions are given.