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对比了中美两国节能标准,以上海地区某办公楼为例,分别建立了在中美公共建筑节能标准下的基准建筑模型,按照ASHRAE 90.1对能耗模拟的要求进行计算,得到该办公楼的空调系统能耗和总能耗。结果表明,我国标准在围护结构、机组效率方面的要求均低于ASHRAE 90.1标准,但是由于美国的空调系统因控制湿度而导致再热量增加,所以根据我国标准和ASHRAE 90.1计算出来的办公建筑的平均能耗强度基本一致。建议我国标准适当减小围护结构的传热系数,提高机组的性能,以利于节能;并且,应详细规定能耗模拟原则,以减少能耗模拟结果的人为因素。
Comparing the energy conservation standards of China and the United States, taking an office building in Shanghai as an example, we have respectively set up a benchmark building model under the standards of energy conservation of public buildings in China and the United States. Calculate the energy consumption according to ASHRAE 90.1 and obtain the office building Air conditioning system energy consumption and total energy consumption. The results show that the requirements of China’s standard in terms of envelope structure and unit efficiency are lower than those of ASHRAE 90.1 standard. However, due to the increase of reheat capacity due to humidity control in the U.S. air conditioning system, the office building calculated according to China’s standard and ASHRAE 90.1 The average energy consumption intensity is basically the same. It is suggested that China’s standard should properly reduce the heat transfer coefficient of the envelope and improve the performance of the unit in order to save energy. In addition, the principle of energy consumption simulation should be specified in detail to reduce the human factors of energy consumption simulation results.