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U-values for mixed-use building

NC-2009 EAp2: Minimum Energy Performance
posted by Francesco Passerini on Apr 10, 2018, 9:57 am

For the baseline model relative to a building where a part is residential (4 floors) and another part nonresidential (ground floor), shall the envelope of the nonresidential part respect the U-...

Last reply: Marcus Sheffer, Apr 10, 2018, 11:26 am

Hz for mandatory provisions for fans

NC-v4 EAp2: Minimum Energy Performance
posted by Francesco Passerini on Mar 21, 2018, 10:42 am

In order to verify whether a fan is compliant with the mandatory provisions we have to consider Table 10.8B, haven't we?

That table is relative to an electricity frequency equal to 60Hz....

Last reply: Francesco Passerini, Mar 22, 2018, 11:39 am

only automatic control in offices for lights

NC-v4 EAp2: Minimum Energy Performance
posted by Francesco Passerini on Mar 21, 2018, 9:49 am

Can the lighting control in offices be automatic (daylighting + occupancy sensors) only? I mean, without manual control?

Best Regards

Last reply: Marcus Sheffer, Mar 22, 2018, 10:00 am

Water Coil Sizing, heating and cooling

NC-v4 EAp2: Minimum Energy Performance
posted by Giuseppina Amorusi on Mar 5, 2018, 4:53 am

Hi all! I have a problem with water coil sizing. I set the following parameters for cooling and heating

Coil:Cooling:Water,...

Last reply: Marcus Sheffer, Mar 8, 2018, 9:50 am

EN 13779–2007

NC-v4 EQp1: Minimum indoor air quality performance
posted by Francesco Passerini on Jul 18, 2017, 4:50 am

We are deciding between the use of EN 15251 and the use of ASHRAE 62.1. Do you have experience in applying EN 13779–2007? I've started to read that and I'm wondering whether there are aspects...

Last reply: Francesco Passerini, Mar 7, 2018, 12:51 pm

ventilation chimneys for buffer space

NC-v4 EQp1: Minimum indoor air quality performance
posted by Francesco Passerini on Nov 23, 2017, 12:18 pm

The corridors are separated from the staircase by two doors in order to create a space (buffer space) whose walls and doors are fire-resistant. That space is ventilated through a ventilation duct...

Last reply: Ben Stanley, Mar 5, 2018, 3:38 pm

ASHRAE 90.1-2010- Unmet hours

CS-v4 EAp2: Minimum Energy Performance
posted by Giuseppina Amorusi on Sep 7, 2017, 6:17 am

Hi all,

I’m modeling for a project under LEED CS v4 according to ASHRAE 90.1-2010.

I know that unmet hours shall not exceed 300 .

In LEED 2009 in accordance to ASHRAE 90.1-...

Last reply: Marcus Sheffer, Mar 5, 2018, 10:53 am

step controls per Section 9.4.1.2a

NC-v4 EAp2: Minimum Energy Performance
posted by Francesco Passerini on Feb 8, 2018, 9:43 am

The v4_Minimum Energy Performance Calculator_v05 states that "Mandatory step controls are included in the proposed, and modeled in the baseline for all spaces enclosed by ceiling height...

Last reply: Francesco Passerini, Feb 15, 2018, 3:15 am

DES Path 1

NC-v4 EAc7: Green power and carbon offsets
posted by Francesco Passerini on Feb 14, 2018, 10:36 am

The Reference Guide at p. 460 states:

"For any projects using energy model Path 1,...

Last reply: Marcus Sheffer, Feb 14, 2018, 12:33 pm

renewable energy sold to the grid

NC-v4 EAc2: Optimize Energy Performance
posted by Francesco Passerini on Feb 8, 2018, 9:57 am

In order to calculated the points relative to NC-v4 EAc2 - Optimize energy performance shall the produced electric energy from a renewable source that is sold to the national grid be...

Last reply: Marcus Sheffer, Feb 12, 2018, 3:01 pm