Design and Experimental Investigation of Novel Flue Gas Condenser

Abstract

Most of the energy needed by the world is still been provided by fossil fuels. Energy costs are increasing day by day due to pandemics, wars, natural disasters, etc. Therefore, the need for energy-efficient systems is increasing. This study recovered the waste heat of a natural gas-fired boiler with a flue gas condenser. First, the condenser heat transfer surface area was determined by analytical calculations. Then, the final design was obtained by CFD analysis to make homogeneous fluid distribution on the shell and tube sides. Finally, performance tests were carried out on the condenser. According to the test results, the analytical calculations were confirmed by 94%. In addition, in the final design, the homogeneity of the flow on the shell side has been proven by the thermal camera images.