Re: [TRNSYS-users] type 927 external files

[Jeff Thornton <thornton@tess-inc.com>]

Emre,

Ideally you would change the parameters of the heat pump model and create your own external data file from the manufacturer’s published catalog data. 

But many times the catalog data isn’t available or is incomplete.  That’s why we provide the normalized performance data files with 927 that represent a typical heat pump.  If you use the provided default please files make sure you provide the capacity and power draw at the rated conditions that were used to create the data file - usually listed at the bottom of the files.

Jeff / TESS

> On Oct 1, 2019, at 3:02 AM, Emre Arpaci via TRNSYS-users <trnsys-users@lists.onebuilding.org> wrote:
> 
> Hi Trnsys User
> I have a question. when you work with different water to water heat pump , do you change the external files in type 927 ? ( heating performance data, cooling performance data)   or do you change only parameters in type 927  ? 
> 
> regards
> 
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