Carbon heat pumps smart option for hotels in cold climates


Research suggests that the hotel industry could save energy by installing CO2 heat pumps. Credit: Colourbox

Energy consumption in the hotel industry is high and contributes to global warming.

Researchers have been studying energy consumption, available energy sources and heating systems in the hotel sector over a five-year period.


They have come up with two important findings from a new study:

  • Hotels with heat pumps use 20 percent less electricity for heating per square meter.
  • CO2 heat pumps in hotels can reduce the need for heating and cooling by up to 60 percent.

Greener energy systems

In the last five years, almost 20 percent more hotels have had access to district heating to replace electric or oil heat. This is a positive step in terms of reducing greenhouse gas emissions.


“However, we still have a way to go on when it comes to energy consumption inside hotels,” says Silje Marie Smitt, a Ph.D. candidate in NTNU’s Department of Energy and Process Engineering at NTNU. She is working with research colleagues at NTNU, SINTEF and the Technical University of Denmark (DTU).

“Studies show that hotels that use district heating as their primary heat source consume significantly more energy than hotels that use heat pumps. This is because heat pumps don’t produce heat—instead, they upgrade the heat from a low temperature to a higher one,” she says.

All-in-one system provides high efficiency


As part of this study, the researchers investigated two hotels equipped with integrated CO2 heat pumps with heat storage. These systems supply all the hotels’ thermal heating and cooling of the building, including heating and cooling of the rooms and hot water.

“The potential of ‘all-in-one’ systems like this is huge, because you can recover heat from parts of the hotel where cooling is needed, and then upgrade or raise the temperature with the heat pump into useful energy. This is how we can achieve high efficiency and reduced energy consumption. The systems with all-in-one CO2 solutions show a large reduction in energy consumption and related greenhouse gas emissions,” says Smitt.

Calculating the rising energy demand for cooling


More information:
S. Smitt et al, Energy use and retrofitting potential of heat pumps in cold climate hotels, Journal of Cleaner Production (2021). DOI: 10.1016/j.jclepro.2021.126799

Provided by
Norwegian University of Science and Technology


Carbon heat pumps smart option for hotels in cold climates (2021, May 25)
retrieved 25 May 2021

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.


Stay connected with us on social media platform for instant update click here to join our  Twitter, & Facebook

We are now on Telegram. Click here to join our channel (@TechiUpdate) and stay updated with the latest Technology headlines.


For all the latest Technology News Click Here 

 For the latest news and updates, follow us on Google News

Read original article here

Denial of responsibility! is an automatic aggregator around the global media. All the content are available free on Internet. We have just arranged it in one platform for educational purpose only. In each content, the hyperlink to the primary source is specified. All trademarks belong to their rightful owners, all materials to their authors. If you are the owner of the content and do not want us to publish your materials on our website, please contact us by email – The content will be deleted within 24 hours.

Leave a comment