How to get know the total system capacity of vrf system in design builder simulation output results?

asked 2021-05-20 17:49:12 -0500

Should I add the indoor and outdoor Design Size Rated Total Cooling Capacity given in output Or it is the only the Outdoor unit Design Size Rated Total Cooling Capacity that decides the total cooling capacity required for building?

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I haven't worked with VRF systems, but I know that for heat pumps typically what you are interested in is the sum of all the capacities of the indoor units that deliver heating/cooling to zones in the building.

For example, if your outdoor compressor Rated Total Cooling Capacity is 30 kbtu/hr, and you are using a MSHP that has 3 indoor heads, at 10 kbtu/hr, 15 kbtu/hr, and 10 kbtu/hr respectively of Rated Total Cooling Capacity; if all three of the heads deliver conditioned air to the same thermal zone, you would be interested in the sum of the indoor capacities for that zone (35 kbtu/hr).

sashadf1 gravatar image sashadf1  ( 2021-05-21 03:40:41 -0500 )edit