What is waste heat recovery?

”Waste heat recovery” is the process of “heat integration”, that is, reusing heat energy that would otherwise be disposed of or simply released into the atmosphere. By recovering waste heat, plants can reduce energy costs and CO2 emissions, while simultaneously increasing energy efficiency.

How does a waste heat recovery unit work?

The system works by guiding the exhaust gases from the furnace into a case which contains refractory material such as aluminium oxide [9]. The exhaust gas heats up the aluminium oxide media and the heat energy from the exhaust is recovered and stored.

How does a waste heat recovery boiler work?

Waste Heat Recovery Boiler is a system which recovers various kinds of waste heat generated from the production process of steel, non-ferrous metal, chemical, cement etc and those equipment of industrial furnaces, refuse incinerators, industrial waste incinerators, and convert such recovered heat into useful and …

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 is a waste heat recovery unit give examples?

Typical examples of use would be preheating of combustion air, space heating, or pre-heating boiler feed water or process water. With high temperature heat recovery, a cascade system of waste heat recovery may be practiced to ensure that the maximum amount of heat is recovered at the highest potential.

How do HRV systems work?

How does an HRV work? An HRV is a very energy efficient system that pulls the stale air from inside your home while simultaneously replacing it with fresh air from outside your home. An HRV works by drawing in the stale, warm air from inside your home along with the cooler, fresh air from outside your home.

How does Van Ee ventilation work?

As stale, warm air is expelled, the heat recovery core warms the incoming fresh, colder air before it is distributed throughout the home. The result is a constant supply of fresh air, no unpleasant drafts and greater home comfort.

What is aux boiler?

Auxiliary boiler means any fuel-fired combustion equipment designed primarily to produce steam for uses other than propulsion, including, but not limited to, heating of residual fuel and liquid cargo, heating of water for crew and passengers, powering steam turbine discharge pumps, freshwater generation, and space …

What are the direct and indirect benefits of waste heat recovery?

In the present scenario of global climate change, the biggest benefit of the waste heat recovery is that it is a green-house gas free source of energy. The indirect benefits are reduction in environmental pollution, reduction in the consumption of energy for auxiliary uses and reduction in the equipment sizes.

What is the difference between ERV and HRV?

HRVs and ERVs are similar devices in that both supply air to the home and exhaust stale air while recovering energy from the exhaust air in the process. The primary difference between the two is that an HRV transfers heat while an ERV transfers both heat and moisture.