When selecting Powermax Energy gas generator sets, two core heat value indicators – HHV and LHV – are key reference benchmarks. Our energy efficiency ratings for all gas-fired generator sets are calibrated based on the low heat generation (LHV) of the fuel. When hydrocarbon fuels are completely burned, they will produce water vapor, whose vapor volume is proportional to the hydrogen content in the fuel. The combustion chamber operates at extremely high temperatures, allowing water to exist in the form of steam, thereby retaining the latent heat of evaporation contained within the steam. This latent heat energy is the key difference in distinguishing between high heat value (HHV) and low heat value (LHV) calculations.
Fuel suppliers typically report prices and volume costs based on HHV indicators. For natural gas, the ratio of HHV to LHV is approximately 1.108:1. When conducting an economic return analysis of our combined heat and power (CHP) solution, HHV data should be used to accurately calculate operating fuel costs. The lower heating value (LHV) of the fuel directly determines the gas supply flow required to enter the Powermax Energy gas engine. Each unit has a fixed total energy demand to achieve the target power output, so the gas supply must match the heat input defined by the LHV level. LHV is usually expressed in MJ/Nm ³. Based on the known power input requirements of the equipment, operators can immediately use this standard unit to calculate the hourly gas consumption, which facilitates system planning and operation monitoring.
