Heat-transfer characteristics of a two-dimensional model of a parallel louver fin
- Dept. of Mechanical Engineering, Kyoto Univ. (JP)
- Gifu Prefectural Textile Research Inst. (JP)
- District Heating Development Co., St. Paul, MN (US)
- Mechanical Engineering Research Lab., Hitachi Co., Ltd. (JP)
The interruption of a fin surface causes renewed boundary layers starting from the leading edge of each interrupted fin. This results in a boundary layer thinner in average over the entire length of the fin surfaces compared to the uninterrupted case. Therefore a higher degree of interruption is normally expected to lead to a higher degree of heat transfer. However, actually to realize this expectation, care must be taken of the geometrical allocation of each fin in an array so as to avoid other undesirable effects relating to the fin geometry. Numerical computation of flow and thermal fields has been made for two-dimensional models of two types of parallel louver fins and an offset fin. In this paper heat-transfer characteristics of parallel louver fins are discussed in comparison with those of an offset fin based upon the results obtained from the numerical computation. It is demonstrated that a certain type of parallel louver fin has a higher heat-transfer performance than that obtained with an offset fin.
- OSTI ID:
- 5115713
- Journal Information:
- Heat Transfer - Japanese Research; (United States), Journal Name: Heat Transfer - Japanese Research; (United States) Vol. 19:7; ISSN 0096-0802; ISSN HTJPA
- Country of Publication:
- United States
- Language:
- English
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