Calculation of Heat Losses Through Non-Insulated Pipelines of a Waste-Heat Recovery System in a Thermal Power Plant

Abstract

Abstract The paper considers the calculation of heat losses through a non-insulated pipeline section of a waste-heat recovery system in a thermal power plant. The waste-heat recovery system of a power generator includes two circuits from each unit and the network water pipelines. The first circuit of the waste-heat recovery system is the high-temperature cooling loop of the generator gas reciprocating engine. The first circuit extracts heat from the engine cooling jacket. The second circuit of the waste-heat recovery system consists of the engine exhausts heat recovery boiler, heat exchanger (heated side), network plate-type heat exchangers, and a pipeline system. In the second circuit, the heat of the first circuit and the heat of the exhausts in the heat recovery boiler is extracted. The recovery boiler pipeline with no thermal insulation is routed on the roof of the thermal power plant. The research objective was to determine the actual heat losses through the non-insulated pipeline section and to compare the obtained data with the regulatory one.