We are replacing the mechanical system, updating the plumbing system and insulating the building envelope for an existing office building.

I have seen several posts pertaining to process energy and how it should be modeled, but I am still unclear as to how it should be treated pertaining to manufacturing process energy.

I’m modelling a student house. In some rooms there is an independent kitchen, while in some other rooms there isn't.

Hello everyone, The reference guide refers to ASHRAE 90.1-2007 with errata without addenda. Now the Minimum Chiller Efficiency for Water Chilling Packages changed. Original Table 6.8.1C: e.g.

Greetings, In the design project we are modeling, there are systems which In the Baseline model are to be classified to System 9, System 11 (90.1-3013 for Data Centers) and Parking garage ventilat

Hello, we are working on a project LEED C&S in 2009 of approximately 100,000 square feet. The property doesn't want to implement the energy modeling due to economic issues. Since the project is

The project team has specified a centrifugal chiller of over 600 Tons with a nonstandard conditions. It has been sent an AHRI certificate showing the compliance with ASHREA 90.1-2007 and 2010.

How do you account for the difference in service hot water efficiency from the proposed design to the baseline design if the proposed design is using electric point-of-use water heaters?

We have a project that use heat recovery chiller to recovery heat from the waste heat from a nearby data center.