CSH Level 3 3 Storey End Terrace

Achieving CSH Level 3 - Exemplar 3a - End Terrace/Semi Detached 3 Storey House - MECHANICAL VENTILATION WITH HEAT RECOVERY APPROACH

BUILT FORM

End terrace 3 storey house

Ground floor area 39.44m2, first floor area 39.44m2, second floor area 39.44m2

Sheltered sides = 2

THERMAL ENVELOPE

'U' values for external elements

Ground floor 'U'=0.18 W/m2K
Walls 'U'=0.20 W/m2K
Dormer 'U'=0.25 W/m2K
Insulated flat ceiling to pitched roof 'U'=0.13 W/m2K
Insulated sloping ceiling 'U'=0.16 W/m2K
Windows 'U'=1.2 W/m2K
Doors 'U'= 1.0 W/m2K
Velux 'U'=1.6 W/m2K

VENTILATION

Design air permeability = 4.0 m3/hour/m2 at 50 Pa

Mechanical ventilation system with heat recovery (system SAP Appendix Q registered)

Kitchen + 3 additional wet rooms
Rigid, insulated ductwork
Specific fan power = 0.75 w/l/s
Heat exchange efficiency = 85%

HEATING AND HOT WATER

Gas fired condensing boiler - 91.3% efficient, SEDBUK band A

Controls - time and temperature zone control
Emitters - wet system radiators
Boiler interlock present
Weather compensator present

Mains gas flueless gas fire to lounge (90% efficient)

180 litre hot water cylinder with 75mm thickness factory fitted insulation

LIGHTING

16 no. fixed dedicated low energy light fittings

CONSTRUCTION DETAILS

Accredited construction details used

SPECIAL FEATURES

None

Achieving CSH Level 3 - Exemplar 3b - End Terrace/Semi Detached 3 Storey House - SOLAR THERMAL APPROACH

BUILT FORM

End terrace 3 storey house

Ground floor area 39.44m2, first floor area 39.44m2, second floor area 39.44m2

Sheltered sides = 2

THERMAL ENVELOPE

'U' values for external elements

Ground floor 'U'=0.18 W/m2K
Walls 'U'=0.25 W/m2K
Dormer 'U'=0.25 W/m2K
Insulated flat ceiling to pitched roof 'U'=0.13 W/m2K
Insulated sloping ceiling 'U'=0.16 W/m2K
Windows 'U'=1.2 W/m2K
Doors 'U'= 1.5 W/m2K
Velux 'U'=1.6 W/m2K

VENTILATION

Design air permeability = 5.0 m3/hour/m2 at 50 Pa

4 no. intermittant extract fans

HEATING AND HOT WATER

Gas fired condensing boiler - 91.3% efficient, SEDBUK band A

Controls - time and temperature zone control
Emitters - wet system radiators
Boiler interlock present
Weather compensator present

No secondary heating to lounge

180 litre hot water cylinder with 75mm thickness factory fitted insulation (70 litres net of solar store volume)

Solar Thermal Hot Water Heating

Flat plate, glazed
4.48m2 gross area
110 litre volume dedicated solar store
PV powered circulating pump