Simulation and performance analysis of combined parallel solar thermal and ground or air source heat pump systems

Solar Energy ◽  
2017 ◽  
Vol 150 ◽  
pp. 500-511 ◽  
Author(s):  
Danny Jonas ◽  
Georg Frey ◽  
Danjana Theis
2013 ◽  
Vol 805-806 ◽  
pp. 645-648
Author(s):  
Wei Xiu Shi ◽  
Li Sheng Pan

Under the situation of energy crisis, air source heat pumps are paid more attention recently. In order to save energy, the feasibility and performance of air source heat pump are studied by experiment, and variation laws of exhaust temperature, evaporator outlet temperature and outlet presser of compressor were analyzed in this paper. Air source heat pump apparatus were set up and the experiment was during 10°C, 20°C, 30°C and 40°C. The results were as follows: exhaust temperature of compressor increases gradually with the increase of tank temperature, but the temperature difference between exhaust temperature of compressor and tank temperature becomes little; temperature difference in evaporator decreases; Compressor outlet pressure increases obviously.


Author(s):  
Srinivas Vanapalli ◽  
M. E. H. Tijani ◽  
Simon Spoelstra

Domestic heating contributes to a significant amount of energy usage in the Netherlands. Due to scare energy resources, attention to develop new and efficient technologies is increasing. At ECN, a burner driven heat pump employing thermoacoustic technology is being developed for possible applications in households and offices. The desired temperature lift is from 10 °C to 80 °C. As a first step the heat pump is driven by a linear motor. Measurements and performance analysis of the heat pump are presented in this paper. The heat pump has a coefficient of performance which is the ratio of heat produced to the work input of 1.38 when operating between 10 °C to 80 °C. The performance relative to maximum possible Carnot value is 26.5%.


Author(s):  
Zhen Tong ◽  
Yiming Guan ◽  
Tingtao Cao ◽  
Yongming Ji ◽  
Songtao Hu ◽  
...  

Author(s):  
CongZheng QI ◽  
ZeMin DING ◽  
LinGen CHEN ◽  
YanLin GE ◽  
HuiJun FENG

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