Heating

Why is this category deprecated?

This category contains a data item for every possible combination of drill down options: home type, age, size, fuel and heating type (3744 in total). The /home/heating/uk category only has drill options for home type and fuel (48 in total) with age, size and heating type being profile item values. The advantage of this approach is that the calculation is performed in Discover's algorithm rather than being pre-calculated before data items are uploaded. This allows many more options to be added (specifically insulation and renewables) and the algorithm can reference data items in Discover, e.g. the fuel emission factors in /home/energy/quantity.

UK heating

This category contains items that give the kgCO₂ emitted for a variety of home types, sizes and heating systems in the UK. The values account for both space and water heating using data and methods adapted from the BREDEM, SAP and RDSAP systems - see BRE and NEF for more information on these.

The following assumptions were made in the /home/heating category, as they are typical of current housing stock in the UK:

• 100mm of loft insulation (U-value of 0.4 W/m^-2K)

• Mainly double glazed (average window U-value 3.5 W/m^-2K)

• Uninsulated concrete ground floors (where applicable)

• 55mm jacket type hot water cylinder insulation

• Hot water cylinder thermostat present

All values include only the direct carbon dioxide emission, except for biomass which is entirely indirect emission.

See Carbon_dioxide_emissions for an explanation of direct and indirect emission.