renovationjiguang_word

1GBPNGlobalBuildingsPerformanceNetworkBuildingPoliciesforaBetterWorldproject@gbpn.
org@GBPNetworkwww.
gbpn.
orgFollowusonTwitter:Formoreinformation:GBPNgloballypromotes"deep"renovationsinexistingbuildingstoensurethatthebuildingssectorplaysasignificantpartinmeetingambitiousenergyandclimatechangegoals.
Suchambitiousimprovementsaregenerallycalled"deep",althoughitmeansdifferentthingsforexpertsindifferentcountriesandregions.
BecausetheGBPNworksatthegloballevel,itisimportanttofindsomecommonunderstanding,avoidmis-communicationanddevelopasmuchconsensusaspossible.
Theacronym,DR,canmeanadeeprenovation,adeepretrofit,adeeprefurbishment,andtoalesserextent,adeepreduction.
Astandardrenovationorrefurbishmentwilloftenachieveenergysavingsrangingbetween20%and30%,sometimesevenless.
However,byrenovatingdeeply,itispossibletoreducetheenergyconsumptionofabuildingbymorethan75%.
Butforsomeexperts,theexpectedsavingsthattheycallaDRissignificantlydifferent.
TheGBPNdevelopedaprojecttohelpprovideaharmonisedDRdefinition.
Theprojectincludedaninitialdesktopliteraturesearchtocollectcurrentglobalandlocaldefinitionsandconditionsofadeeprenovation.
Thiswasusedtoorganisetwowebinars,aquestionnaireandareviewprocess.
ThirtyinternationalexpertsinthefieldofbuildingrenovationwereinvitedtothewebinartocollecttheopinionsandunderstandingsofwhattheseexpertsbelievetobeaDRdefinition.
TheseopinionswerepresentedasconditionsandtargetsofaDRdefinitioninaquestionnairethatwassenttothesamegroupofexperts.
ThequestionnairesoughttoharmoniseandclarifyadefinitionforDR.
ItbecameobviousfromthereactionofthepanelofexpertsthatthereisnocommondefinitionofDRestablished,neitherataregionalorinternationallevel.
ThedefinitionofDRvariesbetweentheregions.
Theresultsofthequestionnairedisplayedacleardistinctionbetweentheterms"deeprenovation"and"deepretrofit".
EuropeanexpertsnormallyusedtheexpressionrenovationwhileAmericanexpertsusuallycalledthemretrofits.
InEuropemostdefinitionsfocusonheating,cooling,ventilationandhotwaterandthereisgeneralagreementthata"deep"renovationmeansatleast75%energysavings.
IntheUS,thereisnocleardefinitionofanenergyrenovationusedconsistentlythroughouttheUSbuildingsector.
ButfortheUS,DRmeantimprovementsof30%–50%basedontotalfinalenergyconsumptionincludingplugload.
Atthispoint,IndiaandChinahavenocommondefinitions.
Tocontinuethedialogue,theGBPNestablishedaknowledgeplatformonitswebsiteconsistingofadiscussionforumandaninteractiveresearchtoolwhereprojectresultsandfindingscanbereviewed.
TheGBPNwillthenusetheresultsofthecollaborationtodevelopcriteriaforselectingbestpracticesforindividualprojectsorgroupsofbuildings.
BriefingWhatisaDeepRenovationDefinitionTheGBPNMarch2013