Based on ASHRAE 90.1, the chilled water pumping power must be 22 W/gpm and does not mentioned the effect of pumping head.

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.

What should be the baseline for interior glazing such as for atrium and partitions? Generally, the designed case will be SGU with high U value and SHGC.

Hi All, I am modelling a VRF system using ApacheHVAC in IES. But have no idea which prototype to choose.

I am working with a data center project which have 3 floors but air conditioned area is less than 25000 sqft. But total area is exceeding 25000 sqft with unconditioned toilets and corridors.

Would Vacancy sensors comply with the occupancy sensor requirement for classrooms, breakrooms and conference rooms under Ashrae 90.1-2007?