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NC-2009 EAp2:Minimum Energy Performance

Mandatory requirements of ASHRAE 90.1 of manufacturing HVAC syst

Dear Forum I am busy with a LEED project for a manufactruing facility that has a combination of building HVAC systems and Manufucturing HVAC systems. The manufactruign HVAC systems are mainly extraction systems and filtered air suply systems with no air conditioning in the manufacturing space. I am not clear as to whether ASHRAE 90.1 2007 mandatory requriements are applicable to manufacturing HVAC systems as well. ASHRAE 90.1 2007 section 2.3 states that: "The provisions of this standard do not apply to c. equipment and portions of building systems that use energy primarily to provide for industrial, manufacturing or commercial procesess." Does this mean that we do not have to apply the mandatory conditions on all of the manufacturing related HVAC systems? When is a system deem to be a mnufacturing HVAC system and when is it deemed to be a building HVAC system? Looking forward to your response Cheers Rudolf

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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Thu, 09/19/2013 - 18:59

If the system conditions the space and is for people then it is regulated by 90.1. If the system conditions equipment and process then it is not regulated by 90.1 and does not have to meet all of the mandatory provisions.
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Rudolph Carneiro
HVAC consultant
Optimized Systems
LEEDuser Basic Member
19 thumbs up

Thu, 09/19/2013 - 20:12

Couldnt resist answering another Rudolf. I think what marcus is saying is that people related equipment is what 90.1 is applicable to. If you have an exhaust system that pulls air from the manufacturing plant, it is clearly intended to provide a comfortable environment for the plant employees. Then it must meet motor efficiency requirements in 90.1. (I checked table 6-4 of ASHRAE 62.1 and it does list manufacturing plant exhaust rates so I guess the engineer would determine what exhaust rate is reasonable based on the polutant source). If an air conditioning system is used to provide the plant with comfortable working conditions, then it should meet efficiency table requirements of section 6.

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