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<DIV><FONT face=Arial size=2>Hello, All</FONT></DIV>
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<DIV><FONT face=Arial size=2>I got a question about energy simulation for LEED
CI. Would you please help to clarify it? </FONT></DIV>
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<DIV><FONT face=Arial size=2>I am doing the energy simulation for a project
pursing CI, which is in a 20-floor-height building. The whole building is served
by one HVAC system, and the chilled water system is primary/secondary systems
with variable-speed drives on the secondary pumping loop. Energy cost
budget method is used to determine the budget case, which will be system type 1
(chilled water for cooling). In ASHRAE90.1-2004, it is said that 'Pump system
power for each pumping system shall be the same as the proposed design; if the
proposed design has no chilled water pumps, the budget building design pump
power shall be 349 kW/1000 L/s . The chilled water system shall be modeled as
primary-only variable flow with flow maintained at the design rate through each
chiller using a bypass.' (page 75). </FONT><FONT face=Arial size=2>I am
confused here. In budget case of my project, shall the chilled water system
be primary/secondary systems as proposed case, or be primary-only
system?</FONT></DIV>
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<DIV><FONT face=Arial size=2>Thanks & Best Regards,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Han Lin</FONT></DIV></DIV></BODY></HTML>