I am modeling an existing building right now. The opaque envelope will be maintained (walls and roof) but the entire inside, all HVAC systems, and windows will be replaced.

Dear sir/madam, Per the Revised Section 1 4 Tables (Dec 2012), for Systems 9 and 10,the fan power=0.3*supply air flow rate(cfm).

We have an office core/shell project that we are considering for certification. The Owner may want to just design a small mechanical unit to service the restrooms and not much more.

Hello, where can I find an exact definition of "new buildings" and "major renovations" for CS-projects to choose the right category for the energy performance of renovated existing buildings with n

Hi everybody I'm working on file "Minimum Energy Performance Calculator" for EAp2 (last version available in Resource on leedonline) which is unlocked. I need to fill in a new system or componen

nice thread. very interesting.

Dear sir, in our project,the meeting room uses CO2 sensor to control the outdoor rate and the parking garage uses CO sensor to control the outdoor rate.

The project at hand is ~500,000 sf and contains 4 buildings, each with 2 sub-floors, a ground floor, and between 4 and 11 stories and a district heating source.

Hi, I have demand control ventilation for every AHU.

In order to fulfil the requirements of EAp2 through building simulation, do we need to meet mandatory requirements of ASHRAE 90.1 2007.