What is meant by waste heat recovery system?
Waste heat recovery is the use of surplus heat that has been produced, for example from a gas turbine on an offshore platform. Waste heat recovery systems are available to improve the overall efficiency of energy use by recovering heat from combustion gases in a steam boiler.
Where does waste heat recovery come from?
Sources of waste heat mostly include heat loss transferred through conduction, convection and radiation from industrial products, equipment and processes and heat discharged from combustion processes [1]. Heat loss can be classified into high temperature, medium temperature and low temperature grades.
What is the purpose of recuperator?
A recuperator is a special purpose counter-flow energy recovery heat exchanger positioned within the supply and exhaust air streams of an air handling system, or in the exhaust gases of an industrial process, in order to recover the waste heat.
What is the need of waste heat recovery?
Waste heat recovery is so important because by reducing the amount of fuel used to produce heat in a boiler installation, heating efficiency increases, resulting in lower fuel use. This serves both the requirement to increase efficiency and reduce carbon emissions.
What are the benefits of waste heat recovery?
The technology used in a waste heat recovery system enables companies to reduce waste and increase their efficiency. On a plant level, implementing this system can reduce your plant’s energy consumption by a lot. Every unit of captured waste heat directly replaces each unit of purchased energy.
How does a heat recovery boiler work?
Boilers of this type generate steam by extracting heat from hot fluid, generally a gas, which is produced as a by-product of a chemical reaction and has no intrinsic value as a chemical, or which is in the form of exhaust from a gas-turbine or internal combustion engine.
Why is waste heat recovery so important?
Waste heat recovery is so important because by reducing the amount of fuel used to produce heat in a boiler installation, heating efficiency increases, resulting in lower fuel use. This serves both the requirement to increase efficiency and reduce carbon emissions.
How does waste heat recovery system work?
Typically, a waste water heat recovery system works by extracting the heat from the water your shower or bath sends down the drain. This heat is used to warm the incoming mains water, reducing the strain on your boiler and the energy required to heat your water up to temperature.
How is heat recovered in a waste heat boiler?
Using a principle similar to economizers, waste heat boilers recover heat generated in furnaces or exothermic chemical reactions at industrial plants. These locations may contain significant energy that should not be wasted up a stack. Instead, this energy can be captured to generate low-to-medium pressure steam in a waste heat boiler (WHB).
What is the waste heat recovery system?
Waste heat recovery is the collection of heat created as an undesired by-product of the operation of a piece of equipment or machinery to fill a desired purpose elsewhere. Waste heat recouping methods range from the simple to the complex.