Retrofitting Historic Buildings - Westminster City Council

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Micro Combined Heat and Power (CHP)DoesBuildingRegs apply?Is this work a requirementtriggered by Part L1B?http://www.planningportal.gov.uk/uploads/br/BR_PDF_ADL1B_2010.pdfPermissions and consentsDisruption Risks Unlisted within a Listed buildingconservation areaUnlisted outside aconservation areaYes -Installer mustbe on theGas SafeRegister.Heating systems are a ‘controlledservice’ under Part L1B.Work should comply with the“Domestic Building ServicesCompliance Guide”.http://www.planningportal.gov.uk/uploads/br/domestic_building_compliance_guide_2010.pdfMedium-High Low In a conservation area,a flue for CHP on adwellinghouse (hereincluding flats) wouldbe permitteddevelopment exceptwhere it is more than1m above highest partof roof or a wall or roofslope which fronts ahighway. xlivListed buildingconsent wouldbe required forthe flue and forany internalalterations.The flue shouldbe positioned ina visuallydiscreet locationon the rearelevation.Planning permissionfor a flue for CHP ona dwellinghouse(here including flats)not normallyrequired, and theflue will be permitteddevelopment up to amaximum of 1mabove highest partof the roof. xlv40
Micro Combined Heat and Power (CHP) isa relatively new technology which is stillbeing trialled,but has good potential to replacedomestic gas boilers. A Micro CHPsystem produces electricity at point ofuse, and makes use of the heat producedas a by-product, which would ordinarily bewasted. Because it doesn’t requiredistribution it is highly efficient. Generally itis best suited to properties with a highheat demand, such as hotels or guesthouses to make it most economic, and itcould be considered as part of a majorrefurbishment.Costs: Although initial costs will be higher than purchase of acondensing boiler the Micro CHP can reduce fuel bills if you optto utilise electricity when heating is on. It does also attract Feed-In Tariff payments and enables sale back to the grid of excessenergy generated.MicroCHPMicroCHP 47UnitPeraveragedomesticsystemCost(lower)Cost(Upper)Cost(average)Subsidies(refer to ESTwebsite forlatest info 46£4000 £5000 £4500 EnhancedCapitalAllowancesWhen to do this: It is advisable to install this generally inproperties that have a high demand for heat and hot water, asthis will make it most economic.Case StudyMicro CHP is being trialled in the Lothrop Streetproperty to determine whether this is viable wheresolar thermal panels are not a possibility. It isanticipated that this will produce around 300w ofelectricity per hour when the unit is producing heator hot water, which is enough to run the TV,washing machine, low energy lighting and MVHR(Mechanical Ventilation with Heat Recovery).For further information see:• Combined Heat and Power Association:http://www.chpa.co.uk• ‘An Introduction to Low Carbon Domestic Refurbishment’Construction Products Association (2010)http://www.constructionproducts.org.uk/publications/dbfiles/Domestic%20Refurbishment%20Revised11010%20(low%20res).pdf41
Page 1 and 2: Retrofitting Historic Buildingsfor
Page 3 and 4: ContentsIntroduction 4Limitations o
Page 5 and 6: This guidance will be of most use t
Page 8: Article 4 DirectionsFor some buildi
Page 12 and 13: competent person’ scheme exists.
Page 14 and 15: MeasuresThis section outlines measu
Page 16 and 17: Installing insulation in existing r
Page 18 and 19: Floor insulation (suspended timber
Page 20 and 21: For further information see:• Fac
Page 22 and 23: Solid wall insulation can be a way
Page 24 and 25: For further information see:• Fac
Page 26 and 27: Solid wall insulation can be a way
Page 30 and 31: Advantages: This can improve the th
Page 32 and 33: Disadvantages: It can be more expen
Page 34 and 35: A significant amount of heat is los
Page 36 and 37: Boiler upgradeDoesBuildingRegsapply
Page 38 and 39: Heating controlsDoesBuildingRegs ap
Page 42 and 43: Ground source heat pumpsDoesBuildin
Page 44 and 45: Air source heat pumpsDoesBuildingRe
Page 46 and 47: For further information see:• ‘
Page 48 and 49: Solar PV panels convertenergy from
Page 50 and 51: Solar thermal panelsDoes BuildingRe
Page 52 and 53: Living roofDoesBuildingRegsapply?Is
Page 54 and 55: Case Study: 15 Passmore Street, SW1
Page 56 and 57: Case Study: The Flagship HomeArchit
Page 58 and 59: SummaryMeasureUnlisted, within acon
Page 60 and 61: Westminster’s Planning PolicyThis
Page 62 and 63: Notes and References1 Westminster H
Page 64 and 65: 35 Town and Country Planning (Gener

Retrofitting Historic Buildings - Westminster City Council

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