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Vegetated external shades

CS-v4 EAp2: Minimum Energy Performance
posted by Maria Grimm on Jul 8, 2020, 6:03 pm

I am working on a project that is designing external vegetated shades/screens. For local code compliance, we are not allowed to include the vegetated shades in our energy model. Are we allowed to...

Last reply: Marcus Sheffer, Jul 9, 2020, 1:48 pm

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,...

Tenant lighting savings with local code (T24) requirements

CS-v4 EAp2: Minimum Energy Performance
posted by Maria Grimm on May 27, 2019, 11:15 pm

Is it possible to claim tenant lighting savings due to local code requirements, without a signed tenant lease agreement? I'm working on a project in California and the LPDs in the tenant office...

Last reply: Alexis Karolides, Jun 15, 2020, 7:15 pm

Energy saving of solar domestic hot water system

CS-v4 EAp2: Minimum Energy Performance
posted by Yuguang Shang on Apr 27, 2020, 6:21 am

Hi all

In my project, solar photovoltaic panels are used to preheat domestic hot water, which is then heated by gas-fired boiler to the set temperature.However, solar photovoltaic panels...

PROJECTION FACTORS FOR VERTICAL FINS

CS-v4 EAp2: Minimum Energy Performance
posted by Fotis Kotsopoulos on Mar 26, 2020, 1:04 pm

Dear all,

Is it possible to correlate vertical fins with projection factors shown in table 5.5.4.4.1 ASHRAE 90.1-2010?

FK 

Last reply: Tyler Thumma, Apr 15, 2020, 1:22 pm

Outdoor ventilation rates in baseline and proposed

CS-v4 EAp2: Minimum Energy Performance
posted by Sarah Leenknegt on Apr 7, 2020, 5:45 am

Hi

Our situation is the following: the outdoor ventilation rates in the proposed building are higher than required by ASHRAE 62.1. Therefore, the baseline model will have lower outdoor...

Last reply: Tyler Thumma, Apr 15, 2020, 1:13 pm

Heating coil as a preheat in DOAS with VRV

CS-v4 EAp2: Minimum Energy Performance
posted by Przemysław Rejczak on Mar 4, 2020, 12:00 pm

Dear Everyone

I am quite confused because I got a review comment recently where Reviewer suggests to exclude preheat coils from Baseline System 7. 

It is a project located in Poland...

Last reply: Tyler Thumma, Mar 25, 2020, 1:30 pm

ASHRAE Office Occupancy Schedule & Fan Control

CS-v4 EAp2: Minimum Energy Performance
posted by Cathal Heneghan on Dec 19, 2019, 4:38 am

Hi

I have a query regarding the ASHRAE Office Schedule. During normal occupancy hours the schedule is set to 95% occupancy, however our experience tells us that an 80% occupancy is typical...

Last reply: Tyler Thumma, Dec 20, 2019, 8:54 pm

VAV Fan-Powered Box Minimum Stop

CS-v4 EAp2: Minimum Energy Performance
posted by Saif A on Dec 18, 2019, 11:13 am

Hi,

I am working on an energy model for core and shell office building. To reduce the reheat energy the mechanical designer planning to reduce the minimum stop for fan-powered boxes. If we...

Last reply: Saif A, Dec 20, 2019, 12:02 pm

Mandatory Provision for Lighting Controls C&S

CS-v4 EAp2: Minimum Energy Performance
posted by Sofia Barahona on Oct 14, 2019, 10:00 am

We are currently working on a LEED Core and Shell v4 office building on Santiago, Chile. Regarding the issue of mandatory provisions ASHRAE 90.1-2010, if there is a binding lease or sale...

Last reply: Tyler Thumma, Dec 20, 2019, 11:06 am