Dear All,

I've been reading through the details of modeling a district heating / cooling plant, and it seems rather complicated! Two options, many methods..

The project is a new...

Hi all.

I´m working in a project with VRV and want to specify a system with high COP values, and three issues surfaced....

1- Since there is no exact system specified in the ASHRAE...

in EA P2, it's written to comply with mandatory provisions which are for example 5.4 which is related to Building envelope under Option 1. But in EA C1, under Option 1, building envelope section...

We are following the option 2 ASHRAE AEDG presciptive path for a project. One of the AEDG requirements for HVAC is for a heat pump >135 kBtuh to be at minimum 10.1 EER or above. We have...

Has anyone done a VRF system serving various zones using say heat pump VRF units and then providing outside ventilation air from a separate dedicated unit serving the same various zones? Is...

How do I simulate a heat pipe in the Baseline case?
The proposed case has two split DX AHUs serving 22 & 15 zones respectively. A wraparound heat pipe is installed in each...

We are starting design for a residential tower in Zone 1 (Hawaii) that will use natural ventilation and no mechanical air conditioning. I am not the mechanical engineer, but I am generally aware...

Can an almost construted building be certified under LEED C&S, if the envelope building is not able to comply with EAP2,EAc1 ASHRAE 90.1.2007 mandatory requirement (OPTION 2 and 3 are not...

A note of Table G3.1.1A of ASHRAE 90.1-2007 states that "For all-electric buildings, the heating shall be electric resistance". I am not a native English speaker and I don't know the definition...

I want to clarify that ASHRAE 90.1 Appendix G 2007 (sec 5.4, 6.4, 7.4, 8.4, 9.4 and 10.4 ) is applicable to Option-1 Whole building energy simulation for both EA Prerequisite 2 and EA Credit 1....