Science – Future of Lithuania / Mokslas – Lietuvos Ateitis, Vol 7, No 4 (2015)

Analysis of air-to-water heat pump in cold climate: comparison between experiment and simulation

Karolis Januševičius (Vilnius Gediminas Technical University, Lithuania)
Giedrė Streckienė (Vilnius Gediminas Technical University)


Heat pump systems are promising technologies for current and future buildings and this research presents the performance of air source heat pump (ASHP) system. The system was monitored, analysed and simulated using TRNSYS software. The experimental data were used to calibrate the simulation model of ASHP. The specific climate conditions are evaluated in the model. It was noticed for the heating mode that the coefficient of performance (COP) varied from 1.98 to 3.05 as the outdoor temperature changed from –7.0 ºC to +5.0 ºC, respectively. TRNSYS simulations were also performed to predict seasonal performance factor of the ASHP for Vilnius city. It was identified that seasonal performance prediction could be approximately 15% lower if frost formation effects are not included to air-water heat pump simulation model.

Article in: English

Article published: 2015-09-29

Keyword(s): air source heat pump; coefficient of performance; experiment; simulation; seasonal performance factor; TRNSYS.

DOI: 10.3846/mla.2015.823

Full Text: PDF pdf

Science – Future of Lithuania / Mokslas – Lietuvos Ateitis ISSN 2029-2341, eISSN 2029-2252
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 License.