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The 90.1 definition of unmet hours is very different from the Canadian
MNECB/ecoEnergy. The SS-R report is used to determine compliance -
no zone may have more than 100 under heated hours. <br><br>
For a project I am doing, the SS-E times BEPS percentage yields a
proposed and budget case that meet the requirements of 90.1 Appendix
G. <br><br>
But both models have more than one zone with more than 100 under heated
hours as reported in the SS-R reports. As this is not a real
building, I only have to increase the heating capacity in those few
zones. A "real" project would have to re-examine zones
that are reporting too many under heated hours to determine if the model
were accurate or if the proposed design required altering.
<br><br>
<br><br>
<blockquote type=cite class=cite cite=""> <br><br>
I can confirm Mike's understanding of the DOE-2/eQUEST results. To
get the correct number of hours of unmet loads, people should MULTIPLY
the Percent hours outside throttling range from BEPS or BEPU by the total
annual "hours fans on" listed in report SS-E.<br><br>
One other comment re: Ashu's write-up - I believe that (for DOE-2/eQUEST)
a zone temperature has to be more than one degree outside the throttling
range for that hour to be counted as an hour outside throttling
range. So for a zone with a heating thermostat setpoint of 72 and a
2 degree throttling range (=> 71-73 degree "throttling
range"), the zone temperature would have to be LESS THAN 70 in order
for that hour to be counted.<br>
<tt> PERCENT OF HOURS ANY
SYSTEM ZONE OUTSIDE OF THROTTLING RANGE = 4.45</tt><br>
<tt> PERCENT OF HOURS ANY
PLANT LOAD NOT
SATISFIED
= 0.00</tt><br>
<tt> HOURS ANY ZONE ABOVE
COOLING THROTTLING
RANGE
= 98</tt><br>
<tt> HOURS ANY ZONE BELOW
HEATING THROTTLING
RANGE
= 25</tt><br>
</blockquote>
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<br>
Chris Jones<br>
14 Oneida Avenue<br>
Toronto, ON M5J 2E3.<br>
Tel. 416-203-7465<br>
Fax. 416-946-1005<br><br>
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