L2 (2006) Building & System data

This pop-up dialogue, which may be accessed either via the Building Settings button ‘Set Building & System Data’ or via the Settings menu, allows you to enter general data relating to the building and its systems required by the BRUKL compliance calculator. It also allows the editing of simulation settings for compliance simulations.

 

These entries provide data general for the BRUKL compliance calculator.

Building: name, street address, city, postcode

Building Occupier: name, telephone, street address, city, postcode

Building Certifier: name, telephone, street address, city, postcode

The design value of the building air permeability. The value must be no more than 10 m³/(m² h). The value set here effects the infiltration rates used for the Actual building.

Choose one of the given options, that would describe the building type best. Infiltration rate settings will be updated accordingly.

Choose one of the given building sub-types, that would describe the building. Infiltration rate settings will be updated accordingly.

Choose an appropriate exposure of the building. Infiltration rate settings will be updated accordingly.

Set the main heating fuel here.

If Override is ticked, these values will override the Infiltration set in Space Data – for compliance runs only

These settings allow credit to be taken in the BER calculation for management features applied to electrical power and lighting.

Electric power factor

Lighting systems have provision for metering?

Lighting systems metering warns of ‘out-of-range’ values?

Give a location description for the building.

Set the project complexity according regulations definitions.

Enter party disclosures.

Is solar gain acceptable in occupied zones without mechanical cooling (L2A Criterion 3)?

If the building contains any occupied spaces without mechanical cooling (air conditioning), you are required to make a statement that the solar gain in those rooms is acceptable (Criterion 3).

Method used to show compliance with L2A paragraph Criterion 3 (supply supporting documentation)

If the previous box displays ‘Yes’, the method used to demonstrate that Criterion 3 is satisfied must be indicated here. The options are:

Method a (gain calculation)

Method b (temperature simulation)

Set whether the building is analysed “As designed” or “As built”

Use this dialog to edit the settings for L2 (2006) ApacheSim compliance simulations. These settings are shared (as appropriate) with the other L2 (2006) simulations available in <VE> compliance.

Simulation settings are described in the <VE> Compliance and Apache View user guides. The special features applying for the various types of <VE> Compliance simulations are as follows.

Results file names are given a prefix to distinguish the following types of simulation:

Compliance simulation for actual building (including test run) - prefix ‘a_’

Compliance simulation for notional building (including test run) - prefix ‘n_’

Summer temperature simulation for actual building – prefix ‘s_’

For compliance simulations and compliance test runs the weather file is automatically set to the Test Reference Year (TRY) appropriate to the building location. For summer temperature simulations the weather file is automatically set to the appropriate Design Summer Year (DSY)

In the case of compliance simulations, ticking the check box ‘Use previous results for notional building’ bypasses the simulation for the notional building in cases where this building has not changed since the previous compliance simulation. This would be the case if, for example, the only input to have been changed was a system efficiency.

The ‘Auxiliary ventilation air exchange?’ check box is ticked automatically. This is because auxiliary ventilation air exchanges form part of the standard room conditions for Part L2 (2006) simulations. An exception to this rule applies in the case where an ApacheHVAC system is used, as in this case the standard ventilation rates may be included in the system air supplies. See Appendix A for further guidance on ventilation settings.

In the case of compliance simulations, the simulation period is forced to the whole year.

Simulation Options are forced to standard settings for the sake of uniformity.

Options are provided, as in Apache View, to incorporate MacroFlo and ApacheHVAC models in <VE> Compliance simulations. If these options are used, special care must be taken with ventilation settings and profiles to ensure that these are consistent with the standard room conditions laid down for L2 (2006) simulations. Guidance on this issue is provided in Appendix A.