Proceedings Chapter Reference

Numerical model of solar assisted heat pump system: validation with long term monitoring data and sensitivity analysis DE SOUSA FRAGA, Carolina, et al. A system combining uncovered solar collectors (116 m2) and heat pump for space heating and domestic hot water production to a new multifamily building (927 heated m) in Geneva, Switzerland was monitored for 2 years. This paper presents a simulation model that was developed to carry out a sensitivity analysis regarding different sizing and control strategies, as well as the adaptability of the concept on existing buildings (retrofitted or not).The validation of the model with the monitored data was accomplished with good accuracy for monthly and annual values. In particular, the SPFSystem simulated of 3.1 is similar to the monitored value of 3.0. The sensitivity analysis shows that the replacement of a non-inverter by an inverter heat pump would decrease the electricity demand by a factor of 0.8 and increase the SPFSystem to 3.8. As for the implementation of this concept in an existing retrofitted building (demand 1.5 times higher than the monitored building), without resizing the system, an increase of the annual electricity consumption by a factor of 1.6 is observed. If all system components are resized, the annual [...] DE SOUSA FRAGA, Carolina, et al. Numerical model of solar assisted heat pump system: validation with long term monitoring data and sensitivity analysis. In: 13th International Conference on Sustainable Energy technologies (SET2014). 2014. Available at