Abstract
Vuilleumier cycle heat pump (VHP) is a thermally driven heat pump and has huge potential for improving energy efficiency in residential heating. In this paper, performance of VHP is studied based on SAGE software. The errors between the experiment and simulation are in the range of −4.6 %∼4.5 % and −18.2 %∼7.4 % respectively for COPh and heating capacity. Based on developed model validated by experimental results, available energy losses (AEloss) are obtained and analyzed. Hot regenerator is the main component for AEloss and incomplete heat transfer is the main contribution for AEloss. Then, the effects of parameters on the performance are studied. And parameters are optimized. The results show that the improvement of COPh could be up to 3.6 %. Moreover, the performance and seasonal energy efficiency ratio of VHP in the cold region are carried out. The results show that seasonal COP could be up to 1.53 at −0.26 °C average ambient temperature.
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