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주영주(Youngju Joo),서형준(Hyeongjoon Seo),황준(Jun Hwang),조형규(Hyeongkyu Cho),송우석(Wooseog Song),김종문(Jongmoon Kim) 대한설비공학회 2016 대한설비공학회 학술발표대회논문집 Vol.2016 No.6
As growing of thermal comfort needs in the occupant zone, the air-flow distribution is key parameter in the indoor unit. In the ceiling type discharge airflow shape, we investigated to compared with thermal uniformity parameters which is temperatures and velocities in a space such as effective draft temperature, Air Diffusion Performance Index(ADPI). The objectives of this study is to compare with the 4-way and circular type discharge flow in indoor unit for temperature and flow velocity distribution and ADPI. Temperature and velocity was measured in artificial residential model house at standard condition. The air temperature distribution area in circular type indoor unit shows the 180% more than that of 4-way conventional type indoor unit. And the ADPI shows 13% higher than that of it. The results shows that the circular type indoor unit is higher than 4-way type indoor unit due to thermal uniformity, even it has a lower draft for occupant zone and more wider temperature distribution in the space.
공조용 축류홴 설계 및 설계변수에 따른 성능과 소음비교
이승진(Seung-Jin Lee),조홍준(Hong-Jun Cho),송우석(Wooseog Song),이승배(Seungbae Lee) 한국유체기계학회 2009 유체기계 연구개발 발표회 논문집 Vol.2009 No.-
Axial fans for an air-conditioning unit are designed to equip the system with an expected flow-rate and low noise level by applying the blade design method of multi-sectioning and local camber generation. In this study, the distributions of chord length, stagger angle, and camber angle are globally and locally determined for the given specific speed, which is considered to be relatively high. The mock-up fans are observed to satisfy the aerodynamic performance and the noise level for the system simultaneously and discussed in terms of local flow patterns related to the emitted noise.
조형규(Hyeongkyu Cho),서형준(Hyeongjoon Seo),김종문(Jongmoon Kim),주영주(Youngju Joo),황준(Jun Hwang),송우석(Wooseog Song) 대한설비공학회 2017 대한설비공학회 학술발표대회논문집 Vol.2017 No.6
A comparison of the thermal comfort according to the discharge air flow of the ceiling type 1-way air conditioner with the long distance flow cooling and the comfortable cooling is experimentally examined in the residential environment laboratory. To improve thermal comfort, the characteristics of the discharge air flow of the air conditioner were investigated by measuring the temperature, velocity and PMV. Due to the effect of the hybrid flow path, occupant zone maintained uniform temperature and the discharge air flow distance to the air conditioner was improved.