Researchers have studied the vitality consumption of 140 motels in Norway and Sweden. The usage of CO2 warmth pumps might reduce vitality consumption in these motels by about 60 per cent.

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Vitality consumption within the lodge business is excessive and contributes to international warming.

Researchers have been learning vitality consumption, out there vitality sources and heating techniques within the lodge sector over a five-year interval.

They’ve provide you with two necessary findings from a brand new examine:

  • Motels with warmth pumps use 20 per cent much less electrical energy for heating per sq. metre.
  • CO2 warmth pumps in motels can cut back the necessity for heating and cooling by as much as 60 per cent.

Greener vitality techniques

Within the final 5 years, nearly 20 per cent extra motels have had entry to district heating to switch electrical or oil warmth. This can be a optimistic step by way of lowering greenhouse gasoline emissions.

“Nonetheless, we nonetheless have a strategy to go on in the case of vitality consumption inside motels,” says Silje Marie Smitt, a PhD candidate in NTNU’s Division of Vitality and Course of Engineering at NTNU. She is working with analysis colleagues at NTNU, SINTEF and the Technical College of Denmark (DTU).

“Research present that motels that use district heating as their main warmth supply devour considerably extra vitality than motels that use warmth pumps. It is because warmth pumps don’t produce warmth – as an alternative, they improve the warmth from a low temperature to the next one,” she says.

As a part of this examine, the researchers investigated two motels geared up with built-in CO2 warmth pumps with warmth storage. These techniques provide all of the motels’ thermal heating and cooling of the constructing, together with heating and cooling of the rooms and sizzling water.

“The potential of ‘all-in-one’ techniques like that is large, as a result of you’ll be able to get better warmth from elements of the lodge the place cooling is required, after which improve or increase the temperature with the warmth pump into helpful vitality. That is how we are able to obtain excessive effectivity and lowered vitality consumption. The techniques with all-in-one CO2 options present a big discount in vitality consumption and associated greenhouse gasoline emissions,” says Smitt.

Reference:  Smitt, I. Tolstorebrov, P. Gullo, A. Pardiñas, A. Hafner, Energy use and retrofitting potential of heat pumps in cold climate hotels, Journal of Cleaner Manufacturing, Quantity 298, 2021, 126799, ISSN 0959-6526 https://doi.org/10.1016/j.jclepro.2021.126799

Supply: SINTEF




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