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Heat pumps.

Author(s) : HALOZAN H., RIEBERER R.

Summary

The old aim of governments was to supply their country with sufficient low-cost energy to keep the economy growing. Nowadays, the climate change requires a reduction of the energy use, mainly the use of fossil fuels, which are the main producers of CO2 emissions. Heat pumps offer the possibility of reducing energy consumption and CO2 emissions significantly, mainly in the building sector, but also in industry. The second law of thermodynamics shows the advantages: While a condensing gas-fired boiler can reach a primary energy ratio of at best 105% (based on the lower calorific value), heat pumps achieve 200 to 400%, depending on the operating conditions. The potential for reducing CO2 emissions assuming a 30% share of heat pumps in the building sector using technology presently available is about 6% of the total world-wide CO2 emissions. With advanced future technologies in power generation, in improved heat pumps used in integrated systems and in advanced control strategies 16% seem to be possible. Therefore, heat pumps are one of the key technologies for energy conservation, for reducing CO2 emissions and for reducing the effects of the climate change.

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Pages: ICR07-E2-834

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Details

  • Original title: Heat pumps.
  • Record ID : 2007-2285
  • Languages: English
  • Subject: Technology, Environment, General information
  • Source: ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Publication date: 2007/08/21

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