# Heat Rate Formula

## Heat Rate Formula

A heat rate is the amount of energy required to generate one kilowatt-hour (kWh) of electricity. To generate unit power, it is necessary to input a certain amount of energy. The Heat rate Formula is the ratio of thermal inputs to electrical output. Thermal power supplies usually measure input and output energy in the same unit. It is proportional to the chemical energy supplied divided by the electrical energy freed that heat is produced. It is a non-dimensional measure (often expressed as a percentage), and specifically, heat rate is also non-dimensional, but it is often expressed as energy per energy. In SI units, it’s joule per joule, but it’s also known as joule/kilowatt-hour or British thermal units/kWh. Kilowatt-hours are typically used to describe the electrical current, while joules or BTUs are typically used to describe thermal energy. The Heat Rate Formula is the amount of energy required to generate one unit of output in a power plant. An energy unit is equal to how much fuel it takes to generate one unit of energy. A thermal power station’s effectiveness, fuel prices, plant load factor, pollutants level, and other performance indicators are all influenced by its heat rate. With the Heat Rate Formula, the ratio of thermal inputs to electrical output is calculated.

What is the Heat Rate Formula?

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How to calculate Heat Rate?

A power plant’s or generator’s Heat Rate Formula is measured in British thermal units (BTU) per kilowatt-hour (kWh). The energy output of the fuel used to generate electricity is multiplied by the quantity of electricity generated. The Heat Rate Formula is used to determine the ratio between thermal inputs and electrical outputs.

### Input of Total Heat:

By oxidising fuel (coal, biomass, oil, gas, etc.), boilers convert chemical energy into heat energy. The fuel is lost as dry flue gas, water, unburned fuel, radiation, and convection. In approximately 90% of boilers, the excess Heat Rate Formula from the fuel is used. Boilers produce high-pressure, high-temperature steam by oxidising fuel. Thus, the created vapour is fed into the gas turbine where it is converted into kinetic energy, mechanical energy in the steam turbine, and electrical energy in the generator. Chemical energy, thermal energy, kinetic energy, and mechanical energy all contribute to the total heat input of a power plant

### Formula of Heat Rate

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### Solved Example

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