Treść książki
Przejdź do opcji czytnikaPrzejdź do nawigacjiPrzejdź do informacjiPrzejdź do stopki
Zarzeka-RaczkowskaE.,RaczkowskiA.,PomorskiP.
TECHNICALANDECONOMICANALYSISOFTHERMAL
MODERNISATIONPROCESSOFADETACHEDHOUSE
1
EwaZarzeka-Raczkowska9
2
AndrzejRaczkowski9
2
PiotrPomorski
1
PopeJohnPaulIIStateSchoolHigherEducationinBialaPodlaska,
DepartmentofEngineeringSciences,DepartmentofCivilEngineering
SidorskaSt.95/97,21-500BiałaPodlaska,Poland
e-mail:e.zarzeka-raczkowska@pollub.pl,
2
CollegiumMazoviaInnowacyjnaSzkołaWyższawSiedlcach
SokołowskaSt.161,08-110Siedlce,
e-mail:araczkowski@mazovia.edu.pl,
Summary:
Theaimofthispaperistoanalysethecost-effectivenessofthermalmodernisation
ofadetachedhouse,makinguseofdifferenttechnologies.Inordertoreduceheat
lossesthreethermo-modernisationoptionsareconsidered.Inthefirstoptionthe
exteriorwallsareinsulatedwith10cmthickStyrofoamandtheroofisinsulated
with15cmthickmineralwool.Thisproducesthefollowingheattransfer
coefficients:fortheexteriorwallU=0.213W/(m
2
K)andfortheroofU=0.214
W/(m
2
K).Inthesecondoption,additionallytothewallandroofinsulation,the
windowswhoseheattransfercoefficientisU=0.9W/(m
2
K)arereplaced.Inthe
thirdoptionalltheworkasinthesecondoptionisdoneandanew,state-of-the-art
boilerofthe93%efficiencyisinstalled.
Theheatcalculationsforthethermalmodernizationofthedetachedhouseare
performedwiththecomputerprogramPURMOOZCv4.80b.Tocostthethermo-
modernisationworksthecomputerprogramNormaProv4.03-pricelistforthe
April-Julyquarter2013isused.
Thethermalmodernizationoftheexistingdetachedhouseencompassinginsulating
externalbarriers,replacingoldwindowswithnewtighteronesandinstalling
anewmoreefficientboilerresultedinaconsiderablereductionoftheheatdemand
coefficient(EA)andallowedclassifyingthehouseasenergy-efficient.
Thescopeofthethermo-modernisationinthethreeoptionsincreasesaswellas
thecostsincurred.Thethirdoptionistwiceasexpensiveasthefirstone,yetthe
paybackperiodissimilar-approximatelynineyears.Themostprofitableisthe
thirdoptionofthermo-modernisationbecauseinatwenty-yearperiodtheowner
cansaveabout41324PLNascomparedtothecostsincurredcurrently.
Keywords:thermo-modernisation,mechanicalventilation,recuperation
Introduction
Inrecentyearstherisingcostsofmaintainingandoperatingaresidentialbuilding,
togetherwithincreasinglyrestrictiveregulationsinresidentialconstructionaswellas
growingenvironmentalawarenessofPolishsocietyhaveallforceddesigners,investors
andoccupantstoapplytechnologieswhichwillenabletoachievethemostcost-effective
andenergy-savingbuildingsolutions.
Thevaluewhichassessesthebuildinginenergy-consumptiontermsisthecoefficient
ofseasonalheatdemand(EA).Thisvalueenabledtocreateenergy-consumption
classificationofbuildings(Table1)(Sas-Micuń2006).
20
