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ashrae 90.1 requirements for industrial process energy?

asked 2017-01-25 04:10:30 -0600

banicu's avatar

updated 2020-03-14 11:29:30 -0600

I’m working on an industrial manufacturing project, located in climate zone 5A, which pursues LEED v3 certification. The project consists of 2,500m2 (26,910 sqft) of office space and 50,000m2 (538,195 sqft) of manufacturing space. Both spaces are heated and cooled. The electrical process load of the manufacturing space is around 2,866 kW.

The issue I’m confronting is that I have several industrial equipment (injection mold which requires 1,000 liters/min of water at 15/20°C; 3,530 liters/min of chilled water for oil cooling; etc.) and I’m not sure how to take them in to account in to my energy simulation for ASHRAE 90.1-2007 compliance.

1) I’m using DesignBuilder v5 for energy modelling but I didn’t find any way to include process energy from industrial equipment. How can I do this in DesignBuilder or Energy Plus?

2) In the baseline case, what system must I use for industrial process energy? Do I have to use the ASHRAE chillers and boilers for chilled/hot water production for industrial equipment or should I use the chillers/boilers from my Proposed case?

3) What else should I do expect considering that my HVAC system is complicated with a large area of solar thermal panels, photovoltaic panels, water to air heat pumps for the space heating and cooling, heat recovery from the chiller condenser etc.?

The project is in the early design stage and not much information is known.

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answered 2017-01-27 01:16:19 -0600

Dave's avatar

If you look towards the bottom of the Activity tab in DesignBuilder you'll see there are inputs for "Process" (and other non-standard) gains. See the Help information here: http://www.designbuilder.co.uk/helpv5...

I'm not sufficiently well versed with LEED requirements to answer your questions on that. A useful starting point might be the DesignBuilder v5 ASHRAE 90.1 modelling guide which can be downloaded via the link on the Help page here: http://www.designbuilder.co.uk/helpv5... 90.1 or just search the v5 online Help file via the Help option in the interface using the term ASHRAE 90.1.

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I’ve constructed a adiabatic room and included the industrial process gains. Then I cooled this room with a fan coil unit connected to a water-cooled chiller (the closest thermodynamic equivalent that I cloud think off). I’m not sure if USGBC will accept this “thermodynamic equivalent”. Has anyone encountered this situation before? For now, I’ve used the same chillers in the Proposed case and in the Baseline case. The improvement is a little over the EAp2 prerequisite of 14%. The ASHRAE Baseline chillers would help me to increase the improvement, but I’m not sure if I should use them.

banicu's avatar banicu  ( 2017-01-27 02:36:32 -0600 )edit

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Asked: 2017-01-25 04:10:30 -0600

Seen: 585 times

Last updated: Jan 27 '17