Use of residual heat reduces costs and CO2 emissions

Use of residual heat reduces costs

Date
07-06-2017

You need heat for a wide range of processes in your business operations. Such as for pasteurising, sterilising or drying your product, or cleaning or heating spaces. Generating that heat results not only in a high gas and/or energy bill but also in high CO2 emissions. But you can change that! Because every refrigeration and freezing process produces residual heat that can almost always be recycled. By trapping this heat or linking and using existing energy flows, you can reduce your consumption of natural gas or electricity, lower your CO2 emissions, make your production process sustainable and – last but not least – lower your costs.

Heat recovery geared to your processes
From both an economic and a sustainability perspective, it is interesting to study the possible options for the use of residual heat. ENGIE Refrigeration always first tries to find ways of satisfying all your heat requirements using your existing process. Sometimes heat recovery is already possible with a few heat exchangers. Does that not cover all your heat requirements? Then a heat pump or transformer could be the solution. Our starting point is always to offer technology that is consistent with your business processes, fully customised and with the maximum yield.  

Successful heat recovery in practice
For years, client and meat producer Jan Zandbergen has been benefiting from the residual heat released during his refrigeration processes. When the company switched to an NH3 system running on natural coolants, with a view to phasing out synthetic coolants in the future, ENGIE wasted no time in mapping out the available opportunities for the use of residual heat. Every day, Jan Zandbergen used 60 cubic metres of warm water for its cleaning processes. But now, by using the residual heat from the system to preheat water to 55°C, Jan Zandbergen is saving a huge amount of gas. The heat battery installed at the company’s premises can charge and discharge. That makes it possible to heat the water to clean and heat the crate washers. This has reduced the company’s weekly gas consumption from 3500 cubic metres to 1200 cubic metres. Huge savings. Add to that the Dutch Energy Investment Deduction, and the company was able to recoup its investment in three years.

Like to know more about using residual heat in your company? Then contact us.

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