PJC's profile - activity

Obviously this is an old thread, but does anyone have the solution to the home of those HadCM3 files? Still refers to mi

PE license experience This is modelling adjacent, related to all of our careers really rather than specific, sorry Has a

Kitchen process loads Hi, Does anyone have any reliable data sources for kitchen loads - profiles, peaks, EUIs, I'll tak

EnergyPro and ARI-rated conditions Hi everyone, I have inherited someone elses EnergyPro model to correct for LEED comm

Do we know if there is a plan to make SU18 work with OS? Or I guess at this point in the year with SU19? SketchUp in the

Hi, I have a building that is about 20,000ft2 of office, plus another 10,000ft2 of underground parking that is heated to 50F. Should I include the parking in the area and use System 5 for my baseline, or exclude it and use system 3? I typically would say exclude, just account for the energy, but since it is heated I lean to including it. Has anyone done this before?

I am looking into a LEED Interiors project, at EAc1.3, the HVAC energy credit. I'm trying to understand whether the modelling for Option 2 of this credit is supposed to be done using the ECB method or Appendix G. In the initial option wording it says ECB, but under the paths it says 90.1 without specifying Section 11 or AppG. One project I am considering currently this would make a big difference to, since ECB would have my water source HP system in the baseline as well, where AppG would have a VAV system as the baseline. I have previously been told, though I can't now find the reference, that ECB isn't supposed to be used to show percent improvement, only for compliance purposes, so AppG was my instinct. Step 6 of the method talks about Section 11 or Appendix G, do I get to choose? If anyone has done this before I'd appreciate comments, in previous CI projects I have only seen Option 1 being used. Thanks

That is perfect, thanks, I hadn't found it when I was searching the LEED interpretations.

Using IES currently, could maybe switch to E+ if it miraculously solved my problem but the principle of the problem holds - how do they actually want me to do this

Hi all, I have buildings sharing central plant for a LEED project, but it doesn't seem to work well with the "Treatment of District or Campus Thermal Energy in LEED". I saw the answers here, but they don't match either https://unmethours.com/question/1218/...

I am working on a project with two buildings on one site, one commercial C&S, one Hotel - separate submissions for LEED (and code). The two buildings are sharing only a condenser water loop – one central cooling tower set, one boiler plant to boost the loop. Both systems will use water source heat pumps.

The campus document talks about a district energy system as being a system that provides thermal energy “heating via hot water or steam, and/or cooling via chilled water”. My condenser water loop is obviously neither, but the document only really talks about heating and chilled water, which will cover 99% of shared plant I guess. If I follow the guide it tells me to make both my baseline and my proposed purchase heating and chilled water, so not what is being built.

Am I supposed to just ignore the central plant and treat them as separate water loops? There are theoretical energy savings from putting two buildings with different profiles on the one loop, and there are also capacity reductions available, but using the guide doesn't seem any kind of logical. Losing those theoretical savings isn't going to kill my result, but I'm trying to be sure that GBCI will actually accept the approach I take.

Thanks