Waste heat recovery is the process of capturing and reusing the heat that is generated by industrial and commercial processes. This heat is typically wasted by being released into the atmosphere through cooling towers or vents. By capturing this heat and reusing it, businesses can improve their energy efficiency and reduce their carbon footprint.
There are many ways to capture and reuse waste heat. One common method is to use heat exchangers. Heat exchangers are devices that transfer heat from one fluid to another. They can be used to capture the heat from hot exhaust gases and transfer it to water or another fluid. This heated fluid can then be used to generate steam or hot water, which can be used for space heating or other purposes.
Another method of waste heat recovery is to use the waste heat to power a absorption chiller. An absorption chiller is a type of refrigeration system that uses heat instead of electricity to generate cooling. Absorption chillers are often used in hospitals and other buildings where there is a need for continuous cooling but where electricity is not available or is too expensive.
Waste heat recovery can be used in a variety of industries and applications. It is particularly well suited to industries that generate large amounts of heat, such as chemical plants, steel mills, glass factories, and ceramic plants. Waste heat recovery can also be used in cogeneration systems, which generate both electricity and heat from a single fuel source.
There are many benefits to waste heat
How can waste heat be recovered?
There are a few ways to recover waste heat:
1. Use it to heat the building: This is the most common way to recover waste heat. The heat can be used to heat the building itself, or it can be used to heat water or other fluids that are used in the building.
2. Use it to generate electricity: Waste heat can be used to generate electricity through a process called cogeneration. Cogeneration plants use waste heat to generate electricity, which can then be used to power the building or sell back to the grid.
3. Use it to power absorption refrigeration: Waste heat can be used to power absorption refrigeration systems, which are used in many commercial and industrial applications.
4. Use it for space heating: Waste heat can be used for space heating, which can help to offset the heating costs of a building.
5. Use it for industrial processes: Waste heat can be used for industrial processes, such as drying, curing, or heat treatment. What is the need of waste heat recovery? There are many reasons for why waste heat recovery is important, but the primary reason is to improve overall efficiency and decrease operating costs. When heat is wasted, it means that heat energy is being wasted as well, which translates into wasted money. By recovering this wasted heat energy, you can use it to offset other energy needs in the data center, or even sell it back to the grid. This can help to drastically reduce your energy bills, and also help to reduce your carbon footprint.
How does a waste heat recovery boiler work?
A waste heat recovery boiler (WHRB) is a type of boiler that uses waste heat from a process or industrial facility to generate steam or hot water for space heating or process heating.
The waste heat can come from many sources, including exhaust gases from furnaces, boilers, or engines; process gases from furnaces, kilns, or other process equipment; or cooling water from cooling towers or other cooling equipment.
WHRBs are typically used in industrial or commercial facilities that use large amounts of energy in their processes, such as chemical plants, steel mills, glass plants, or paper mills.
WHRBs can be either fire-tube or water-tube boilers, and can be either natural draft or forced draft.
The most common type of WHRB is the fire-tube boiler, in which the waste heat is used to heat water that is circulated through the fire-tubes.
In a water-tube boiler, the water is circulated through the tubes and the waste heat is used to heat the water.
WHRBs typically have a lower operating cost than other types of boilers because they use waste heat that would otherwise be wasted.
They also have a higher efficiency than other types of boilers, and can be used to generate steam or hot water at a lower cost than other types of boilers.