Heat Transfer Analysis of High Temperature Dish-type Solar Receiver with the Variation of Porous Material
다공성 매질의 형상 변화에 따른 접시형 고온 태양열 흡수기의 열성능 평가
- Lee, Ju-han (Dept. of Mechanical Eng, Graduate School, Inha University) ;
- Seo, Joo-Hyun (Dept. of Mechanical Eng., Inha University) ;
- Oh, Sang-June (Dept. of Mechanical Eng., Inha University) ;
- Lee, Jin-Gyu (Dept. of Mechanical Eng., Inha University) ;
- Cho, Hyun-Seok (Dept. of Mechanical Eng., Inha University) ;
- Seo, Tae-Beom (Dept. of Mechanical Eng., Inha University)
- 이주한 (인하대학교 대학원 기계공학과) ;
- 서주현 (인하대학교 기계공학과) ;
- 오상준 (인하대학교 기계공학과) ;
- 이진규 (인하대학교 기계공학과) ;
- 조현석 (인하대학교 기계공학과) ;
- 서태범 (인하대학교 기계공학과)
- Published : 2008.11.14
Abstract
A numerical and experimental studies are carried out to investigate the heat transfer characteristics of 5kWth dish-type solar air receiver. Measured solar radiation and temperatures at several different locations are used as boundary conditions for numerical simulation. Many parameters' effects (reflectivity of the reflector, the thermal conductivity of the receiver body, transmissivity of the quartz window, etc.) on the thermal performance are investigated. Discrete Transfer Method is used to calculate the radiation heat exchange in the receiver. A heat transfer model is developed and the rate of radiation, convection and conduction heat transfer are calculated. Using the numerical model, the heat transfer characteristics of volumetric air receiver for dish-type solar thermal systems are known and the thermal performance of the receiver can be estimated.
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