We are working on the LEED design of a factory building. We are running an energy simulation: for the size of the building, according HVAC modeling requirements in ASHRAE 90.1, we would use System 6 - Packaged VAV with PFP boxes for the baseline building. In fact we can meet ASHRAE 55.2 comfort requirements by using an evaporative cooling mechanical ventilation system. This is not a conventional chiller system, it is only mechanical ventilation. Please confirm we continue to use the Packaged VAV with PFP boxes for the baseline building case--we see nothing requiring that we change the baseline modeling requirements. There is no heating system since we're in the tropics (the project is located in southern Vietnam).
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Omer Moltay
Co-founderMimta EcoYapi
201 thumbs up
April 10, 2010 - 9:49 am
Hello,
In the major renovation of an existing building, existing chiller and boiler are being retained. Would ASHRAE 90.1-2007 require these equipment to fulfill the minimum efficiency requirements?
Christopher Schaffner
CEO & FounderThe Green Engineer
LEEDuser Expert
963 thumbs up
April 17, 2010 - 3:48 pm
Fabio:
The baseline requirements do not change. Watch out that you don't exceed the limits for unmet load hours.
Omer:
In your energy model, the baseline equipment will have to meet the 90.1-2007 requirements. Whether that means you need to replace the boiler and chiller to comply will depend on your model results.