FAQ

Frequently Asked Questions

Heat recovery contributes to more efficient energy use in your process or factory. This results in lower gas consumption, reduced CO2 emissions and savings on operational costs. It also helps reduce your carbon footprint and meet legal energy-saving obligations, often with attractive payback periods.

The feasibility of heat recovery depends on the residual heat available and the possibilities of reusing it within your process or elsewhere in your factory. Factors such as temperature, flow rate, operational hours, energy prices and internal distances play a role in this regard. Our Heat Recovery Scan provides quick insight into your specific situation and opportunities.

Residual heat can be used more broadly than to heat buildings alone. Think preheating combustion or process air, heating cleaning water or other applications that currently use fossil fuels. During the Heat Recovery Scan, we examine which application offers the most benefit in your situation.

For flue gases with contaminating or corrosive components, it is essential to control cooling properly to prevent condensation and contamination of the heat exchanger. We offer polymer heat exchangers that are resistant to acids and less prone to contamination, enabling heat recovery even with challenging flue gas flows.

The impact on your process is minimal. With our years of experience, we ensure that your installation continues to operate optimally, preferably with a bypass, to keep your primary process undisturbed. We coordinate the execution closely with you to minimise any downtime.

In cooperation with our sister company, we provide a turnkey solution. We work according to a structured approach with four steps: a Heat Recovery Scan, a detailed heat integration design, the actual installation and commissioning, and finally service and maintenance. This ensures that you are completely unburdened and the system performs optimally.

Air preheater

An air preheater (APH) is a gas/ gas heat exchanger that recovers heat from flue gases, baking fumes or drying air to preheat combustion or drying air. Energy is used more efficiently as a result.

Air preheaters are used in thermal combustion and drying processes, such as steam boilers, thermal oil boilers, furnaces and dryers, for preheating combustion and drying air.

Air preheaters increase efficiency, reduce fuel consumption and improve efficiency by 4-10% in combustion and up to 25% in drying, reducing costs and emissions.

In the brick industry, residual heat from kilns is used to preheat combustion air. This reduces gas consumption and significantly increases energy efficiency.

Economiser

An economiser is a gas/liquid heat exchanger that recovers heat from flue gases and uses it to preheat boiler feedwater, process water or thermal oil.

Economisers are used in steam boilers, thermal oil boilers, furnaces and dryers to preheat process water, thermal oil or cleaning water and reduce energy consumption.

An economiser increases energy efficiency, lowers fuel consumption and CO2 emissions and reduces the payback period by making optimal use of residual heat in industrial processes.

In a brewery, residual heat from the steam boiler is used to preheat boiler feedwater, reducing energy consumption and operational costs.

Condenser

A condenser recovers heat from flue gases or drying air and condenses water vapour, reusing both tangible and latent heat in the process.

Condensers are used in steam boilers, dryers, furnaces and thermal oil boilers to preheat process water, boiler feedwater or cleaning water, or to feed heat pumps.

A condenser decreases energy use, reduces CO₂ emissions and utilises condensing heat, leading to higher efficiency and lower operating costs.

In a drying plant, residual heat from exhaust air is utilised to heat process water, resulting in lower energy costs and more efficient heat utilisation.

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