室外无过冷管热交换器提升换热效果研究
Research on improving heat transfer efficiency of outdoor non subcooled tube heat exchanger
王树涛 1闫付强 1杨燃 1赵站稳 1蒋贤国 1许纪刚1
作者信息
- 1. 海信空调有限公司 山东 青岛 266000;海信家电集团股份有限公司 山东 青岛 266000
- 折叠
摘要
在设计室外翅片管式换热器时,传统的方法是在底部设计过冷管以抑制结霜.然而,这种方法存在一定的局限性,因为过冷管内的制冷剂温度通常高于环境温度,这不仅会导致换热器面积的浪费,还会增加额外的设计成本.为了解决这一问题,设计了一种无过冷管的换热器流程,并通过引入过热制冷剂进入换热器底部,实现了全流路换热和抑制结霜的双重目的.实验研究分析表明,采用无过冷管方案的换热器在性能上有所提升.具体来说,与常规换热器相比,这种设计的机组在制热时长上延长了约15％,制热能力提升了约8.2％,制热能效提升了约5.4％.这些改进有助于开发出更加高效、舒适的偏制热领域空调器.
Abstract
In the design of outdoor finned tube heat exchangers,the traditional approach is to incorporate subcooling pipes at the bottom to suppress frosting.However,this method has certain limitations because the refrigerant temperature inside the subcooling pipes is usually higher than the ambient temperature,which not only leads to the waste of heat exchanger area but also increases additional design costs.To address this issue,researchers have designed a heat exchanger process without subcooling pipes,and by introducing superheated refrigerant into the bottom of the heat exchanger,they have achieved the dual purpose of full flow path heat transfer and frost suppression.Experimental research analysis indicates that the performance of heat exchangers using the subcooling pipe-free scheme has been enhanced.Specifically,compared to conventional heat exchangers,the heating duration of this design's unit is extended by about 15％,the heating capacity is increased by about 8.2％,the heating energy efficiency is improved by about 5.4％.These improvements contribute to the development of more efficient and comfortable air conditioners in the heating-oriented field.
关键词
无过冷管/抑制结霜/全流路换热Key words
Eliminate subcooling pipes/Suppressing frosting/Full-flow heat exchange引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据