A regenerative elastocaloric heat pump
| Autor: | Jaka Tušek, Nini Pryds, Janez Tušek, Stefano Dallolio, Kurt Engelbrecht, Dan Eriksen |
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| Rok vydání: | 2016 |
| Předmět: |
Engineering
Heating power Global energy toplotne črpalke Nuclear engineering elastokalorični učinek Energy Engineering and Power Technology Mechanical engineering 02 engineering and technology 01 natural sciences law.invention Refrigerant law elastocaloric effect heat pumps 0103 physical sciences Magnetic refrigeration regenerative thermodynamic cycle 010302 applied physics Renewable Energy Sustainability and the Environment business.industry Refrigeration udc:697:621.577(045) 021001 nanoscience & nanotechnology Electronic Optical and Magnetic Materials Renewable energy Fuel Technology regenerativni termodinamični krožni proces 0210 nano-technology business Efficient energy use Heat pump |
| Zdroj: | Nature energy, vol. 1, no. 10, 16134, pp. 1-6, 2016. |
| ISSN: | 2058-7546 |
| DOI: | 10.1038/nenergy.2016.134 |
| Popis: | A large fraction of global energy use is for refrigeration and air-conditioning, which could be decarbonized if efficient renewable energy technologies could be found. Vapour-compression technology remains the most widely used system to move heat up the temperature scale after more than 100 years; however, caloric-based technologies (those using the magnetocaloric, electrocaloric, barocaloric or elastocaloric effect) have recently shown a significant potential as alternatives to replace this technology due to high efficiency and the use of green solid-state refrigerants. Here, we report a regenerative elastocaloric heat pump that exhibits a temperature span of 15.3 K on the water side with a corresponding specific heating power up to 800 W kg−1 and maximum COP (coefficient-of-performance) values of up to 7. The efficiency and specific heating power of this device exceeds those of other devices based on caloric effects. These results open up the possibility of using the elastocaloric effect in various cooling and heat-pumping applications. Although heating and cooling consume a large fraction of global energy, current technologies are not energy efficient. Tusek et al. report an elastocaloric heat pump with active regeneration that can outperform other caloric-based cooling and heat-pumping devices. |
| Databáze: | OpenAIRE |
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