NCM Database - Occupancy and Heat Gain in PartL

Shane Regan — Wed, 03 May 2023 16:03:26 GMT

Current Revision posted to OpenBuildings | AECOsim | Speedikon Wiki by Shane Regan on 5/3/2023 4:03:26 PM

	Product(s):	OpenBuildings Energy Simulator
	Version(s):	CONNECT Edition
	Environment:	N/A
	Area:	Part L
	Subarea:	N/A

Overview

Design conditions specified in your room properties, such as occupancy levels and heat gains, will likely have little or no impact on your PartL results.

Method

The SBEM calculation engine ignores user defined design settings in order to ensure consistent comparison between buildings.

Activity types are taken from your building/room properties, and the subsequent PartL design criteria is taken from the relevant activity type tables in the NCM database, ultimately providing occupancy densities, profiles and heat gains for the SBEM calculation engine.

For example, please see Office room type below, from which the occupancy gains for PartL are determined using occupancy density and metabolic rates:

Tags: Occupancy, OpenBuildings Energy Simulator, PartL, ncm

NCM Database - Occupancy and Heat Gain in PartL

Shane Regan — Wed, 01 Sep 2021 15:18:31 GMT

Revision 2 posted to OpenBuildings | AECOsim | Speedikon Wiki by Shane Regan on 9/1/2021 3:18:31 PM

	Product(s):	OpenBuildings Energy Simulator
	Version(s):	CONNECT Edition
	Environment:	N/A
	Area:	Part L
	Subarea:	N/A

Overview

Design conditions specified in your room properties, such as occupancy levels and heat gains, will likely have little or no impact on your PartL results.

Method

The SBEM calculation engine ignores user defined design settings in order to ensure consistent comparison between buildings.

Instead, building and activity types are taken from your building and room properties and compared to tables in the NCM database, ultimately providing occupancy densities, profiles and latent gains for the SBEM calculation engine.

Internal heat gains are calculated from occupancy conditions and metabolic rates, which are in turn taken from the NCM database.

For example, please see Office room type below:

Tags: Occupancy, OpenBuildings Energy Simulator, PartL, ncm

NCM Database Occupancy levels

Shane Regan — Tue, 26 May 2020 12:07:50 GMT

Revision 1 posted to OpenBuildings | AECOsim | Speedikon Wiki by Shane Regan on 5/26/2020 12:07:50 PM

	Product(s):	OpenBuildings Energy Simulator
	Version(s):	CONNECT Edition
	Environment:	N/A
	Area:	Part L
	Subarea:	N/A

Overview

Occupancy levels that are defined within your room properties will likely differ to those in your PartL results

Method

The SBEM calculation engine ignores user defined occupancy levels in order to ensure consistent comparison between buildings. Building and activity types are taken from your building and room properties and compared to tables in the NCM database, ultimately providing occupancy densities, profiles and latent gains for the SBEM calculation engine.

Internal heat gains are calculated from occupancy conditions and metabolic rates, which are in turn taken from the NCM database. For example, please see Office room type below:

Tags: Occupancy, OpenBuildings Energy Simulator, PartL, ncm