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Hot-water design supply and return temperature difference

CS-v4 EAp2: Minimum Energy Performance
posted by Przemysław Rejczak on Feb 22, 2021, 10:11 am

Dear Everyone,

I got a comment for one of our project which in my opinion is not ccompatibe with ASHRAE. We do not have much time for the response, so I decided to ask about it here.

...

ASHRAE 90.1 applicablity to semi-heated spaces

CS-v4 EAp2: Minimum Energy Performance
posted by Nancy Henderson on Feb 11, 2021, 8:02 pm

Hello,

We are working on a core and shell distribution center.  The warehouse space has gas unit heaters and the space is considered semi-heated.  There are separate exhuast fans for...

Last reply: Nancy Henderson, Feb 12, 2021, 1:25 pm

Ceiling suspended units

CS-v4 EAp2: Minimum Energy Performance
posted by Rathnashree Bharadwaj on Jan 20, 2021, 7:52 am

Hello,

We are working on a core and shell office building. The entire floor plate is divided into smaller office spaces and is served by ceiling suspended units connected to a central...

Last reply: Tyler Thumma, Feb 5, 2021, 1:07 pm

CHP (Cogeneration Heat Power) District Heating with a mix of solid waste and natural gas

CS-v4 EAp2: Minimum Energy Performance
posted by Jonathan Landry on Dec 10, 2020, 12:09 pm

We are working on a project which receives hot water for space heating and...

Last reply: Tyler Thumma, Feb 5, 2021, 12:10 pm

Exterior rooftop lighting power allowance

CS-v4 EAp2: Minimum Energy Performance
posted by Juan Carlos Sanabria Fallas on Apr 4, 2019, 11:13 am

Hi all,

I'm currently working in a project pursuing LEED certification (Core & Shell).
For exterior lighting power allowance purposes, I'm not sure of the type of space that I...

Last reply: Michelle Christopher, Jan 12, 2021, 9:50 am

Core & Shell proposed model

CS-v4 EAp2: Minimum Energy Performance
posted by Ying Lindsey on Nov 16, 2020, 5:24 pm

Dear all,
I have a question regarding the core and shell proposed model.  Here I use the  HVAC main system designation to mean the main air loop, excluding terminal units.  I summarized...

Last reply: Marcus Sheffer, Dec 2, 2020, 12:34 pm

LEED CS: EAP2 x EQp1- Missing Base Building Ventilation

CS-v4 EAp2: Minimum Energy Performance
posted by Levi Jimenez on Oct 19, 2020, 7:57 pm

Our building is an amenities building with food service, gymnasium, clicinal spaces, etc. but as a Core & Shell, only includes exhaust and a split unit for the restrooms.  There is no...

Last reply: Tyler Thumma, Dec 2, 2020, 11:14 am

Appendix G exceptions applicable to C&S?

CS-v4 EAp2: Minimum Energy Performance
posted by RDK E&S on Oct 13, 2020, 1:48 pm

Hello, 

We have a C&S project - combination of office and lab. Appendix G requires an exception for labs, however, due to the C&S project type we are currently not modeling any...

Last reply: Marcus Sheffer, Oct 14, 2020, 9:35 am

Ventilation of parking garages

CS-v4 EAp2: Minimum Energy Performance
posted by Sarah Leenknegt on Mar 11, 2019, 7:51 am

Hi

We are modelling an office building in Switzerland with LEED v4 Core and Shell and have a question regarding the required ventilation rate for parking garages. According to ASHRAE 62.1...

Last reply: Tyler Thumma, Aug 21, 2020, 11:38 am

Chilled beams with default occupancy

CS-v4 EAp2: Minimum Energy Performance
posted by Manuel Martin Delgado on Jun 29, 2020, 7:13 am

Hello,

We have an office building designed with DOAS CAV (20degC ) and active chilled beams with induction factor of 4 (at 18.5degC). The fresh air for higenic reasons is 40m3/h*person,...

Last reply: Tyler Thumma, Aug 21, 2020, 11:34 am