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<p class=MsoNormal>Hi all,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I'm doing a LEED EAc1/ASHRAE 90.1-2004 Appendix G
calculation where the building is served by a district cooling scheme and the
basecase building is serviced by PTHP (ASHRAE 90.1 table G3.1.1A), i.e. the basecase
building is uses electrically powered DX coils compared to purchased chilled
water coils for the proposed building. <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The problem I have is that the price per kWh of chilled
water is very close to the local price per kWh of electricity, which means that
the cooling energy cost of the proposed building ends up much larger - for the
PTHP system 1kWh of electricity gives something like 3kWh of cooling, but the
same money only gets 1kWh of cooling from the district scheme, which makes it
virtually impossible to get any LEED EAc1 credits. Has anyone else encountered
this issue?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks for your help,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Andy<o:p></o:p></p>
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