制冷学报2026，Vol.47Issue(3)：100-106,7.DOI:10.12465/issn.0253-4339.20250328003
不同热回收新风多联机系统在住宅中的节能效果分析
Energy Saving Performance of Variable Refrigerant Flow Systems with Different Heat-Recovery Fresh-Air Units in Residential Buildings
摘要
Abstract
To address the issues of poor air quality and the lack of fresh air in traditional variable refrigerant flow(VRF)systems,fresh air units are commonly supplemented in practical engineering applications.However,these systems are typically controlled independently.To achieve coordinated operation between VRF systems and heat-recovery fresh-air units,a new integrated VRF fresh-air system was developed,with the aim of reducing system energy consumption and improving indoor comfort and air quality.Based on the full-condition performance model of the VRF system and the characteristics of the heat-recovery unit,simulations were conducted to evaluate the energy-saving effects of conventional VRF systems and of three types of integrated VRF fresh-air systems in residential buildings in Nanjing and Beijing.The results indicate that,compared with conventional VRF fresh-air systems,the system equipped with a constant air volume heat-recovery unit significantly reduced the operational energy consumption,achieving annual energy savings of 20.7%and 30.6%in Nanjing and Beijing,respectively.The energy-saving performance was positively correlated with the severity of cold-climate conditions.During the heating season,the new integrated system prioritizes the use of the heat-recovery mode and minimizes the fresh air volume.During the cooling season,the energy-saving performance can be further improved by introducing a bypass branch and combining it with a variable air-volume control strategy.Compared to the primary baseline system,the combined VRF fresh-air system achieved cooling-season energy-saving rates of 2.77%and 15.31%for Nanjing and Beijing,respectively.关键词
热回收/新风机组/多联机/优化控制/气候区Key words
heat recovery/fresh air unit/variable refrigerant flow system/optimized control/climate zone分类
建筑与水利引用本文复制引用
周宇珏,黄招彬,徐振坤,高卓贤,王宝龙,石文星,杨子旭..不同热回收新风多联机系统在住宅中的节能效果分析[J].制冷学报,2026,47(3):100-106,7.基金项目
国家自然科学基金青年项目(52408115)资助.(The project was supported by the National Natural Science Foundation of China Youth Project(No.52408115).) （52408115）
