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Dear
Huseyin, Thanks for your answer. However, in your paper, you used an air-to-air heat pump; however, as I have a radiator in my system, I need to use an air-to-water heat pump which there is only a single stage type in the TRNSYS TESS library. Kind regards Pouyan From: Hüseyin Günhan Özcan <huseyin.ozcan@yasar.edu.tr>
Dear Sardari, You can use two-stage heat pump models to create low, nominal and high stages for the considered heat pump. We had a publication for a two stage air source heat pump. Pls. see the shared link below. https://www.sciencedirect.com/science/article/pii/S2210670721000482
Best regards, Dr. Huseyin Gunhan OZCAN From: TRNSYS-users <trnsys-users-bounces@lists.onebuilding.org>
On Behalf Of Pouyan Talebizadehsardari (Staff) via TRNSYS-users Dear All, I am modelling a house heated by radiators using an air-to-water heat pump. This model is based on user-supplied data files containing catalogue data for the capacity and power based on the inlet water temperature
and air to the heat pump. As I understand, for a specific existed heat pump, the system should be tested for several inlet conditions (for example 5 different temperatures of water and air=25 case) and then create a new data file including the capacity and
power. Am I correct? My main question is that is it possible to consider additional characteristics of the heat pump in the model such as variable speed compressor so the system can be worked with a lower power when less heat
is required for the radiators? Thanks in advance Best regards ******************************************************************************* Pouyan Talebizadeh Sardari, BSc
MSc PhD AFHEA Centre for Sustainable Energy Use in Food Chains,
Institute of Energy Futures,
Brunel University London,
Kingston Lane, Uxbridge, Middlesex, UB8 3PH, UK
Email: pouyan.talebizadehsardari@brunel.ac.uk
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