Noise reduction of refrigerant two-phase flow using flow conditioners near the electric expansion valve
- Title
- Noise reduction of refrigerant two-phase flow using flow conditioners near the electric expansion valve
- Author
- 송시몬
- Keywords
- Noise reduction; Flow conditioner; Refrigerant two-phase flow; Electric expansion valve
- Issue Date
- 2020-02
- Publisher
- KOREAN SOC MECHANICAL ENGINEERS
- Citation
- JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, v. 34, no. 2, page. 719-725
- Abstract
- Two-phase flow, particularly generated in an expansion device, is a primary cause of refrigerant-induced noise in an air-conditioning system. The indoor unit (IDU) of a multi-split air source heat pump (ASHP) for both heating and cooling must include an electric expansion valve (EEV); therefore, consumers have perceived the increased noise. To reduce this noise, we experimentally investigated the two-phase flow and consequent noise by applying a honeycomb and porous metal as a flow conditioner to the EEV in the IDU of a multi-split ASHP. Flow conditioning near the EEV with the honeycomb and porous metal made the two-phase flow steadier and more uniform, leading to reduced noise and frequency variation for the three heat operation modes of a multi-split ASHP. The noise reduction was also verified in the transient operating modes of a real IDU.
- URI
- https://link.springer.com/article/10.1007%2Fs12206-020-0118-3https://repository.hanyang.ac.kr/handle/20.500.11754/161553
- ISSN
- 1738-494X; 1976-3824
- DOI
- 10.1007/s12206-020-0118-3
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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