Taking the hotel as an example, analyses the characteristics of energy consumption in existing star hotels in south China based on the existing energy consumption data. Finds that the energy consumption of HVAC system is the largest part, accounting for about 66.9% of the total routine energy, in which the energy consumed by the chillers is the largest part, accounting for 49.56%, and followed by the air-conditioning terminal devices (AHU, PAU, FCU), 25.54% and the water pumps, 14.39%. Puts forward some countermeasures for energy efficiency reformation appropriately, including applying higher-' efficiency chillers, large chilled water temperature difference (8 ℃), frequency control for chilled water and cooling water pumps, variable air volume control for fan coil units with brushless DC motors, higher-efficiency fans and air handling units, and higher-efficiency and double operating mode water-water heat pump heat recovery hot water system. Discusses feasibility and effects of these countermeasures one by one. And obtains the energy saving goal of HVAC system reformation after analysing energy-saving effects of each part in HVAC system.%以广州白天鹅宾馆为例,以现有能耗数据为基础,分析了南方地区既有星级酒店的用能特点,发现该酒店通风空调系统能耗最大,占常规能耗的66.9％；其中空调主机能耗所占空调通风系统总能耗的比例最大,为49.66％；其次为空调末端(空气处理机、新风处理机、风机盘管)能耗,为25.54％；第3位为水泵能耗,为14.39％.为此,有针对性地提出节能改造对策:采用高效制冷机,冷水大温差(8℃),冷水泵、冷却水泵变频,直流无刷风机盘管变风量控制,高效节能风机、空气处理机组,双工况高效水-水热泵热回收热水系统等措施和技术,逐一论证了其实现的可行性及节能效果.通过分析酒店空调通风系统各部分节能效益,获得了空调通风系统节能改造的节能目标.
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