Hi,

Has anyone ever had any experience with modeling a VRF system with
individual hot water heaters tied into the refrigerant loop?

We are debating in the office how this would be handled by an energy
modeling program. In the summer you could produce almost free hot water and
reduce the condensing unit load. But in the winter you would either need
greatly oversized condensing units or auxiliary heat. I'm not aware of this
level of functionality in an energy modeling program with domestic hot
water heating. We are thinking you would need to perform some amount of
calculations by hand with outputs from an energy model...

Also, has anyone had any positive or negative experiences with this in
terms of performance and operations?

Thanks!

*Ben Hollon, EIT, LEED*?* AP BD+C, MBA*

email: bhollon at antella-inc.com

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