| Title |
A theoretical Analysis and CFD Simulation on the Ceramic Heat Exchanger |
| Authors |
팽진기(Jin Gi Paeng) ; 윤영환(Young Hwan Yoon) |
| Keywords |
세라믹 폐열회수기 ; 직교류유동 ; 폐열회수기 ; 유용도 ; 고온용 열교환기 장치 Ceramic Recuperator ; Cross-flow ; Recuperator ; Effectiveness ; HRU |
| Abstract |
A ceramic monolith heat exchanger is studied to find the performance of heat transfer and pressure drop by numerical computation and -NTU method. The numerical computation was performed throughout the domain including fluid region in exhaust gas-side rectangular ducts, ceramic core and fluid region in air-side rectangular duct with the air and exhaust in cross flow direction. In addition, the heat exchanger was also analyzed to estimate the performance by conventional -NTU method with several Nusselt number correlations for flow in rectangular duct from literature. By comparisons of both performances by the numerical computation and the -NTU method, the effectiveness by -NTU method was closest to the result by numerical computation within a relative error of 2.14% when Stephan’s Nusselt number correlation was adopted to the -NTU method among the several correlations. |