Hello,
I am currently working on a project of 5 floors, total conditioned area of 10 000 m2. DesignBuilder provides systems for Ground Source Heat Pump (GSHP) and Air Source Heat Pump (ASHP), but I have some problems finding the best way to compare these two systems, as well as connecting a DHW loop to the system. the indoor unit is probably going to be a FCU. My objective is to compare these two systems, but I have some questions about the systems. Since the project is in Athens, Greece, these systems should take care of the cooling, heating and Domestic Hot water demands.
For the ASHP for example, I find only a template for Heating only, and when I use it I have a lot of unmet hours, so I don't know how to size it correctly. What should I do for the Cooling Demand? Add a Air cooled Chiller? And how can I size the ASHP so the system can meet the heating & cooling load as well as the DHW load?
As for the GSHP, I don't really know how to size correctly the GSHP as it has very low consumption for such a big building.
Thank you for your support,
Konstantinos Dikaros
