การพัฒนาซอฟต์แวร์เพื่อการออกแบบรีคูเพอเรเตอร์สำหรับเตาเผาอุตสาหกรรม / พงศภรณ์ อาดัม = Development of a recuperator design software for industrial furnaces / Pongsaporn Adam
The aim of this research is to develop a computer program to solve the thermal energy exchange and pressure drop for designing a cross-flow (2 pass) gas-to-gas recuperator. The Effectiveness-NTU method is employed to calculate the thermal energy exchange and the P[subscript 1]-P[subscript 2] method is used to analyze the optimum heat exchanger surface area. The program has been developed with Microsoft Visual Basic V.6.0. Its user-friendly input format and good graphic features makes it an efficient tool for designing a recuperator. For the case of air flow in tube, flue gas flow in shell, it is found that the optimum heat exchanger surface area is 13.8728 m[superscript 2] (117 tubes) when the effectiveness of recuperator is 37%. The combustion air is preheated from 30 degree celsius to 265.25 degee celsius. The heat recovery is 387.42 MJ/hr and the payback period is 4.84 months. For the case of air flow in shell, flue gas flow in tube, It is found that the optimum heat exchanger surface area is 10.7787 m[superscript 2] (91 tubes) when the effectiveness of recuperator is 34%. The combustion air is preheated from 30 degree celsius to 246.17 degree celsius. The heat recovery is 355.1 MJ/hr and the payback period is 5.3 months, respectively.
