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Modelling free cooling

CS-2009 EAc1: Optimize Energy Performance
posted by Ilaria Piong on Oct 24, 2018, 10:53 am

I have a Core and Shell building where there is an air-to-air heat pump. This HVAC system has the opportunity to do the free cooling in summer season when outdoor air temperatur is lower than...

Last reply: Marcus Sheffer, Dec 17, 2020, 2:13 pm

unmet load hours

CS-2009 EAc1: Optimize Energy Performance
posted by Elisabetta Annoni on Apr 5, 2011, 12:05 pm

Hi,

for the unmet load hours test there is a throttling range to be defined. As I understand from ASHRAE 90.1 there is no fixed value for this range, how shuold it be defined? Is it...

Last reply: Marcus Sheffer, Nov 3, 2020, 2:01 pm

Baseline HVAC System Selection

CS-2009 EAc1: Optimize Energy Performance
posted by Ciaran McCabe on Mar 8, 2017, 11:34 am

I am working on a 9 storey office building (8 levels of office and 1 basement level). The building has a total floor area of 9,400m2. The space heating and cooling will be provided by means of a...

Last reply: Marcus Sheffer, Sep 4, 2020, 10:30 am

Modeling Future Tenant Spaces

CS-2009 EAc1: Optimize Energy Performance
posted by Anna Kaelin on Mar 12, 2020, 2:12 pm

As our C&S spaces are a future build out we have to predict what the fan power in our FCUs will be. We have manufactures data for all the potential FCUs that could be connected to the...

Last reply: Marcus Sheffer, Mar 20, 2020, 2:44 pm

Exemplary Performance?

CS-2009 EAc1: Optimize Energy Performance
posted by Brian Salazar on Oct 15, 2019, 1:00 pm

Hello!  Is there an Exemplary Performance threshold for this credit?  

Last reply: Brian Salazar, Oct 15, 2019, 1:40 pm

LEED Interpretation ID# 10421 for ASHRAE 90.1-2010 Adjusted Point Scale for LEED v2009 Projects

CS-2009 EAc1: Optimize Energy Performance
posted by Silvia Ruiz on Jul 11, 2019, 7:04 pm

Hi,

I have a project that was register on February of 2015 and I’m working with ASHRAE 90.1-2010 in the Energy Model Software, I understand that I can use the interpretation 10421 to...

Last reply: Silvia Ruiz, Jul 12, 2019, 12:45 pm

Lighting control (occupancy sensor)

CS-2009 EAc1: Optimize Energy Performance
posted by Christophe Boussuge on Jun 28, 2019, 10:23 am

Hi all,

I had review back for my ASHRAE 90.1-2007 model for a LEED project (office building) and would need some advice on how to address the subject.

In the first submission of the...

Last reply: Christophe Boussuge, Jul 10, 2019, 2:51 am

90.1-2010 Minimum Equipment Efficiencies

CS-2009 EAc1: Optimize Energy Performance
posted by Tom Nichols on Sep 14, 2018, 6:33 pm

I have an interesting situation.  I am looking to model a 60 ton (720,000...

Last reply: Marcus Sheffer, Sep 17, 2018, 11:17 am

Energy Simulation Baseline

CS-2009 EAc1: Optimize Energy Performance
posted by Yong Lee Low on Dec 17, 2017, 9:48 am

Hi, i'm working on an office building of 95,000sqm using a District Cooling System (DCS). I am using the HAP E20 software for simulation. What should be the baseline of the cooling system be?...

Last reply: Marcus Sheffer, Dec 18, 2017, 10:39 am

Car Park Ventilation

CS-2009 EAc1: Optimize Energy Performance
posted by Ciaran McCabe on Aug 28, 2017, 5:01 am

In relation to car park ventilation that will only operate in the event of high carbon monoxide i.e under normal circumstances will be off. How should this be modeled in accordance with ASHRAE 90...

Last reply: Marcus Sheffer, Sep 5, 2017, 12:04 pm