Azly,
I am not aware of such a component for TRNSYS. I see that some
research / simulation appeared in the International Journal of
Energy Research in 2003: "study on a direct-expansion solar-assisted
heat pump water heating system" (Y.H. Kuang, K. Sumathy, and R.Z.
Wang). My approach in TRNSYS would be to seek out a manufacturer who
has some performance metrics on an available device or to couple an
existing heat pump model with an existing solar collector model. You
will need to be careful of what solar collector model you choose
however; most solar collector models are for glazed collectors and
make the simplifying assumption that the radiation losses are
negligible. I imagine that this would not be the case if the
collector were being used as the evaporator for the heat pump
though.
Kind regards,
David
On 9/30/2011 06:36, Mohamad Azly Abd Aziz (Ir) wrote:
Hi
I wonder whether someone has come-out with
heat pump type with direct expansion solar
collector/evaporator?.
Regards
Azly
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