Chillventa | Danish supermarket cuts heating bill and CO₂ footprint with Danfoss Heat Recovery Unit (HRU)
Chillventa Stream
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  • Event: Specialist forums
  • Stream: Refrigeration
  • Topic: Highlight 3, Efficiency, Refrigerant

Danish supermarket cuts heating bill and CO₂ footprint with Danfoss Heat Recovery Unit (HRU)

This presentation is about a busy Danish supermarket that reduced its annual heating bill by 89.7 % and its CO₂ footprint by 6.7 tons a year by making use of the waste heat from its refrigeration system using Danfoss Heat Recovery Unit (HRU) and now recycles it to heat the store.

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When & Where

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Thu, 13.10.2022, 13:00 – 13:20

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Format: Lecture

Language: English

Description

The challenge: Recycle waste heat from a R-744 refrigeration system—without disrupting operation As everyone who’s ever been near the business end of a refrigerator or air conditioner knows, keeping things cool produces heat. In a modern supermarket with aisles full of refrigerators and freezers, the amount of heat is significant— and enough to heat the entire supermarket and its hot water if it can be properly recovered.
According to Morten Birkebæk, store manager at MENY’s Fredericia supermarket in Denmark, making better use of waste heat was a “win-win”.
“As a Supermarket Manager with responsibility for the store’s bottom line, I’m of course interested in cutting unnecessary costs wherever possible,” he explains. “But if we can reduce our carbon footprint at the same time and do it all in a way that is hassle-free for our customers and employees, then count me in.” The solution: Turnkey installation of a Danfoss Heat Recovery Unit (HRU) “The calculations were straightforward,” Birkebæk recalls. “We knew how many kWh we needed to heat the store and provide it with hot water, and we knew what we were paying the district heating company for that energy. Danfoss and the installer, Dansk Varmegenvinding, proposed a turnkey solution that included everything: the hardware, connections, installation, and a service agreement. With their help, we calculated the payback period for the investment, and it was good. My only concern was making sure that the installation and operation of the heat recovery unit would not complicate the everyday tasks of my staff.”
The result: Annual energy savings of 89.7 % and a reduction of 6.7 tons of CO₂— without operational disruption After a full year of operations, Birkebæk can now see precisely how much energy, money, and CO₂ the store has saved. During the first year, MENY in Fredericia reduced its energy consumption by 135 MWh in total, with 56 MWh coming directly from the Danfoss Heat Recovery Unit (HRU) and 79 MWh through a year-long Danfoss EnergyTrimTM contract. What’s more, the store reduced its carbon footprint by 6.7 tons of CO₂, close to that of a car driving around the equator.

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Speaker

Mark Sever

Mark Sever

Global Application Expert
Danfoss

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