常规空调系统中温运行策略下热舒适与节能效果研究 ——以深圳某办公建筑为例
Thermal comfort and energy-saving effects of medium-temperature operation strategy in conventional air conditioning systems:A case study of an office building in Shenzhen
摘要：
为探究夏热冬暖地区空调系统中温运行策略对热舒适及节能效果的影响,本研究以深圳某办公建筑为对象,选取气象条件基本一致的2周时段,分别实施中温(9 ℃/14 ℃)运行策略与常规(7 ℃/12 ℃)运行策略的对照实验。结果表明:中温运行策略可维持与常规运行策略相当的室内温度,但相对湿度显著提升13.3%;尽管湿度增幅明显,但基于当地人员对湿热气候的适应性及较高湿度耐受性,该策略下热舒适度可接受率仍保持在94%以上;同时中温运行策略呈现显著节能效益,系统总能耗降低率达13.0%,且系统COP从4.64提升至5.35,推动系统从非高效等级(COP<4.7)跃升至2级能效(COP≥5.2)。
Abstract：
To investigate the impact of a medium-temperature operation strategy in air conditioning systems on thermal comfort and energy-saving effects in the hot summer and warm winter zone, this study conducts a controlled experiment on an office building in Shenzhen. The experiment compares the medium-temperature operation strategy (9 ℃/14 ℃) with the conventional operation strategy (7 ℃/12 ℃) over two weeks with comparable meteorological conditions. Key findings indicate that the medium-temperature operation strategy maintains indoor temperatures comparable to those of the conventional operation strategy, but significantly increases relative humidity by 13.3%. Despite this substantial humidity increase, the thermal comfort acceptability rate under the medium-temperature operation strategy remains above 94%, attributed to the local occupants’ adaptation to the hot-humid climate and their higher humidity tolerance. Simultaneously, the medium-temperature operation strategy demonstrates significant energy-saving benefits, achieving a 13.0% reduction in total system energy consumption. Furthermore, the system’s coefficient of performance (COP) increases from 4.64 to 5.35, elevating the system from a non-high-efficiency grade (COP<4.7) to a level 2 energy efficiency rating (COP≥5.2).
Keywords:air conditioning system; medium-temperature operation; thermal comfort; energy-saving effect; energy efficiency of system; office building