Experimental Study on Thermal Characteristics of Heat Exchanger Modules for Multi Burner Boiler

멀티버너 보일러용 열교환기 모듈 특성 시험 - 모듈 순서에 따른 특성결과 -

  • 강새별 (한국에너지기술연구원) ;
  • 김종진 (한국에너지기술연구원) ;
  • 안준 (한국에너지기술연구원)
  • Published : 2008.11.05

Abstract

We develop a heat exchanger modules for a multi-burner boiler. The heat exchanger module is kind of a heat recovery steam generator (HRSG). This heat recovery system has 4 heat exchanger modules. The 1st module consists of 27 bare tubes due to high temperature exhaust gas and the others consist of 27 finned tubes. The maximum steam pressure of each module is 1 MPa and tested steam pressure is 0.7 MPa. In order to test these heat exchanger modules, we make a 0.5t/h flue tube boiler (LNG, $40\;Nm^3/h$). We tested the heat exchanger module with changing the position of each heat exchanger module. We measured the inlet and outlet temperature of each heat exchanger module and calculated the heat exchange rate. The results show that if module C is placed at second stage (the 1st stage is always module O, bare tube module), there is no need to attach an additional heat exchanger module. In this case the exit temperature of module C is low enough to enter an economizer which is more effective in heat recovery than a heat exchanger module.

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