published: 20/11/2017
20th November 2017: Release of iSBEM_v5.4.a
Public release of iSBEM_v5.4.a
iSBEM_v5.4.a includes the following updates:
- Default luminous efficacy of LED light bulbs in iSBEM modified to correspond to the revised value in England’s 2013 NCM Modelling Guide.
- iSBEM and SBEM modified in order to accommodate the calculation of energy for integral fans in the auxiliary energy associated with HVAC systems with integral fans, e.g., fan convectors, to correspond to the added methodology in England’s 2013 NCM Modelling Guide.
- SBEM modified in order to accommodate the change in the district heating specifications for England’s Notional building in the 2013 NCM Modelling Guide.
- SBEM and BRUKL modified in order to accommodate the published addendum to the 2013 Non-domestic Building Services Compliance Guide with regards to the limiting SFP for central mechanical ventilation that includes heating and cooling with active chilled beams.
- Constructions data in iSBEM and the NCM Constructions Database slightly modified in view of the publication of the SAP 2016 consultation response.
- Lighting energy calculation in SBEM modified to use lighting hours instead of occupancy hours from the NCM Activity Database.
- SBEM modified so that heat gains from display lighting are included in the calculation of the peak space cooling value which is required for calculating the fan power density for auxiliary energy, in order to be consistent with England’s 2013 NCM Modelling Guide.
