Heat consumption is the energy (fuel) consumption of the cycle. The ratio of heat consumption to electrical power output is commonly known as the power plant heat rate. This relationship is a measure of the power plant efficiency. This parameter is therefore an indirect relationship of the financial performance of power plants.
Power plant heat rate is usually corrected to reference conditions – commonly given by the OEM or by the EPC contractor – to validate the power plant efficiency parameters achieved are in line with the guaranteed performance of the plant.
A precise heat consumption measurement must be provided so that the calculated heat rate is as precise as possible. Depending of the type of power plant this could be a direct measurement, like in a combined cycle performance test an indirect measurement like in a coal power plant performance test.
In order to provide the highest engineering quality measurements TGPS performs overall plant efficiency test programs in accordance with the internationally recognized standards such as ASME PTC46.