Waste heat is generated from the exhausts of fume incinerators, combustion engines, glass melting furnaces, and cooling water from furnaces and convective, conductive, and radiation heat losses from combustion engines and cement kilns. Waste heat is also generated from process off-gases. Heat losses in several industrial processes can be curtailed by using waste heat recovery systems. Such systems involve the capturing and reuse of waste heat for combustion air preheating, steam generation, load preheating, power generation, space heating, and waster preheating.

According to P&S Intelligence, the waste heat recovery market will generate a revenue of $70.5 billion by 2022. Owing to the high prices of conventional energy sources such as oil, gas, and coal, such industries are focusing on the recovery of waste heat, as it will allow them to reduce their operating costs.

These end-use industries use waste recovery methods, such as waste heat wellsprings and waste recovery hardware, such as turbines, mechanical warming boilers, and heat recovery system generators (HRSGs), to meet their energy requirements. Waste heat wellsprings encompass the exchange of heat from hot gear outside and the release of hot burning gases to the environment. Waste heat can also be recovered by using mechanical heat recovery systems that include the capture and reuse of waste heat. Deployment of such systems helps in reducing operational expenses, energy consumption, and nursery gas and carbon dioxide (CO2) outflows in manufacturing facilities.

Furthermore, North America is expected to hold the second position in the waste heat recovery market in the forthcoming years. This can be primarily ascribed to the mounting focus of the manufacturing sector on fuel efficiency and surging investments being made by manufacturers on technological improvements and optimum economic returns in the region. Additionally, the increasing compliance for environment stability and escalating focus of governments on the development of renewable and sustainable alternative energy sources will propel the deployment of waste heat recovery systems in the region in the coming years.

Therefore, the rising electricity demand from the manufacturing sector and surging need for alternative and clean energy sources will encourage the adoption of waste heat recovery units in the foreseeable future.

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