家电科技Issue(z1)：20-24,5.DOI:10.19784/j.cnki.issn1672-0172.2023.99.005
多联机APF的提升方法研究
Research on methods for improving APF of VRF
顾超 1毛守博 1倪双全 1何建奇 1孟庆良1
作者信息
- 1. 青岛海尔空调电子有限公司 山东青岛 266001
- 折叠
摘要
Abstract
Raises the minimum limit value of APF in accordance with GB 21454-2021"Energy Efficiency Limits and Energy Efficiency Grades for Multi connected Air Conditioning(Heat Pump)Units"released by the National Standards Commission in 2021.Further research is needed on the influencing factors of multi connected APF and the methods for improving APF;Using a certain 16HP top-outlet air multi line,experimental tests were conducted to verify the impact of the size of the return oil capillary,the flow path of the outdoor heat exchanger,and the cycle time of low-temperature heating and defrosting on the APF.The experimental results showed that optimizing the flow path of the outdoor heat exchanger,the size of the return oil capillary,and the cycle time of low-temperature heating and defrosting is beneficial for improving the APF,with an increase ratio of 8.41%,3.29%,and 1.68%,respectively;The main purpose of optimizing the size of the outdoor thermal exchange circuit and return oil capillary is to improve the energy efficiency ratio of the intermediate working conditions to achieve the goal of improving APF,while the main purpose of optimizing the cycle time of low-temperature heating and defrosting is to increase its circulating heat capacity and improve the overall APF.关键词
APF/回油毛细管/换热器流路/低温制热时长Key words
APF/Return oil capillary/Heat exchanger flow path/Low temperature heating duration分类
通用工业技术引用本文复制引用
顾超,毛守博,倪双全,何建奇,孟庆良..多联机APF的提升方法研究[J].家电科技,2023,(z1):20-24,5.
