Can anyone please clarify which, if any, minimum efficiency requirements are set for heat-pump dehumidifiers (indoor swimming pool dehumidifiers) under ASHRAE 90.1 (2007)?

Greetings, The standard states that the pump power must be 22 W/gpm. If the project has two chillers and primary secondary circuits, whereby there is on pump per chiller in the primary circuits and

Sorry for a couple of elementary questions, but my searches haven't been successful. 1. Is 90.1 compliance required, or only the mandatory provisions? 2.

Hallo, I have read the insulation requirements in Section 7.4.3 but it seems to focus on circulating and non-circulating systems with a storage tank.

If a project retains existing mechanical systems, but the overall scope of the renovations meets the new construction threshold, are the baseline calcs based on code-minimum or should the project a

For HVAC System, Our project team will apply to 2 absorption chillers and geo-exchange heat pump.(project site is located in DES) In this case, we know that the baseline system of HVAC is absorpti

Hello Marcus, As an energy modeling expert who has experience reviewing energy models submitted for LEED, how much time is spent by the LEED reviewer on EAp2? I understand there are quite a bit o

The definition of Unmet Load Hours has been vague for quite some time. ASHRAE 90.1 2010 was supposed to address this issue. Do we have some resolution about this yet?

Apart from LEED/USGBC, I want to design a pump which can supply hot water at each floor's apartment for space heating (of total 20 floor). what will be the head?

We are considering LEED certification for a four season golf range hitting facility that will have hitting areas with overhead radiant heaters and indoor conditioned areas as well.