Use Waste Heat Utilization Techniques
The Office of Energy Efficiency and Renewable Energy estimates that between 20% and 50% of energy input to industry is dissipated as waste heat. This loss occurs through various means, such as hot exhaust gases, equipment surfaces, heated products, and others. However, there are several benefits associated with utilizing this waste heat.
One of the primary benefits is energy conservation and pollution minimization resulting from heat generation. This heat, typically derived from fossil sources, can be utilized to preheat air and water, which are essential for numerous industrial processes.
A common technique for waste heat recovery is the use of heat exchangers to extract heat energy from hot exhaust gases and preheat incoming air and water. This approach leads to a reduced reliance on fossil fuels for energy generation.
Another effective technique is the introduction of waste heat boilers, which can transform waste heat into steam or hot water for various industrial applications. Moreover, incorporating waste heat recovery systems in district heating systems offers a more efficient and renewable method of heating residential and commercial spaces compared to fossil fuel-based heating.
From an economic perspective, the potential for waste heat utilization is substantial. Energy savings not only reduce costs for industries but also enhance their competitiveness. Additionally, the environmental impact is positive, as waste heat recovery leads to lower greenhouse gas emissions and other pollutants, contributing to improved environmental health.