model proiect in power point
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Audit energetic pentru o clădire nerezidentială
Prof. dr. ing. Ocnărescu ConstantinIng. Nedelcu GheorgheArh. Bărbos Vasile
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Cuprins
1. Fisa de analiza termica si energetica a cladirii;
2. Determinarea performantelor energetice ale cladirii; 3. Certificat de performanta energetica a cladirii; 4. Anexa la certificat energetic; 5. Raport de rezultate;
6. Breviar calcul- cladirea existenta; 7. Breviar calcul- cladirea de referinta; 8. Lista masurilor de modernizare energetica a cladirii,Anexa 1E; 9. Raport de audit; 10. Breviar de calcul cladirea modernizata; 11. Studiu privind necesitatea dotarii cladirii cu instalatii de climatizare; 12. Fotografii; 13. Piese desenate.
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1. FISA DE ANALIZA TERMICA SI ENERGETICA A CLADIRII
Obiectul lucrarii : CLADIRE BIROURI S+P+E partial Adresa: Mun. CAMPULUNG - MUSCEL, str. FRATII GOLESTI nr. 1 jud. ARGESPROPRIETAR: CONSILIUL JUDETEAN ARGES
STR
. FR
ATI
I GO
LES
TI
PLAN DE SITUATIE
9,20
13,8
0
8,00
S+P
S+P+E
D+P
D+P
CLADIRE BIROURI
D+P
D+P
8,10
3
1
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Identificarea structurii constructive a cladirii
Pereti exteriori opaci - PE- alcatuire:
PEDescriere Suprafata (m2) Straturi componente i → e
Material Grosime (m)
Pereti exteriori din zidarie portanta tencuiti pe ambele fete Rm= 0,778
m2K/W
343,84
Mortar var 0,030
Caramida normala 0,500
Mortar var 0,030
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Identificarea structurii constructive a cladirii
Pereti adiacenti casa scarii - PeCS – alcatuire:
PeCS Descriere Suprafata (m2) Straturi componente i → e
Material Grosime[m]
Pereti exteriori din zida-rie portanta tencuiti pe ambele fete Rm= 0,720 m2K/W 35,14
Mortar var 0,030
Caramida normala
0,375
Mortar var 0,030
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Identificarea structurii constructive a cladirii
Pereti adiacenti pod - PePOD – alcatuire:
PePOD Descriere Suprafata (m2)
Straturi componente i → e
Material Grosime
[m]
Pereti exteriori din zidarie
portanta tencuiti pe ambele fete Rm= 0,720 m2K/W
49,40
Mortar var 0,030
Caramida normala
0,375
Mortar var 0,030
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Identificarea structurii constructive a cladirii
Planseu pod - PPOD - alcatuire:
PPODDescriere Suprafata
(m2)Straturi componente i→e
Material Grosime[m]
Structura pe grinzi lemn tencuita la interior si slab termoizolata Rm= 0,646 m2K/W
340,84 Mortar var 0.03
Strat aer neventilat
0.150
Podina lemn brad
0.035
Sapa cu moloz 0.070
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Identificarea structurii constructive a cladirii
Planseu peste subsol – alcatuire:
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Identificarea structurii constructive a cladirii
Planseu peste casa scarii – alcatuire:
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Identificarea structurii constructive a cladirii
Ferestre exterioare:
Usi exterioare:
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Caracteristici geometrice
Caracteristici ale spatiului incalzit:
- Suprafata spatiului incalzit : Sinc=414,74m2 - Volumul spatiului incalzit : Vinc=1705,84m3 - Inaltimea medie libera : Hlumm=4,11m - Aria construita : AC=418,30m2 - Aria desfasurata : AD=947,10m2
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Gradul de ocupare al spatiului incalzit si numarul de ore de functionare a instalatiei de
incalzire
Persoane: 25 persoane; Program de functionare: 5 zile /
saptamana, 10 ore/zi.
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Date privind instalatia de incalzire cu sobe
15 sobe teracota 2×3×9 cahle si SU=4,76m², cu cosuri de fum 0,15×0,15 independente
qS=2500W/m²
P=nS×SU×qS/(1+m)
unde m=0,5 pentru sobe cu cahle lise
P=15×4,76×2500/(1+0,5)/1000=119,00kW
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2. Determinarea performantelor
energetice ale cladirii
1. Introducere; 2. Prezentarea generala a cladirii;
2.1. Elemente caracteristice privind amplasarea cladirii in mediul construit;
2.2.Elemente de alcatuire arhitecturala;2.3. Descrierea anvelopei cladirii si starea existenta a
elementelor de constructie;2.4. Descrierea structurii de rezistenta;2.5. Descrierea instalatiilor de incalzire si apa calda
menajera;
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2.6. Caracteristicile geometrice ale constructiei
- lungime: L= 30.18 m - latime: l= 16.95 m Nivele: Subsol + Parter + Etaj (partial) Inaltimea libera: Subsol h=2,60m
Parter h=3,80m si 4,20mEtaj h=3,80m
Aria construita: Ac = Sc = 418.30 m2 Volumul brut: Vinc = 1705.84 m2 Aria desfasurata: Ad = Sd = 947.10 m2 Suprafata utila a spatiului incalzit: SUTIL = SINC = 414.74 m2 Suprafata birouri: SBIR = 256.50 m2 Aria anvelopei: A= SE =1225.33 m2 Volumul incalzit net: VINC= 1524,00 m2 Indice de forma: A/VINC= 0.718 m2
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3. Prezentarea principalelor caracteristicilor geometrice si termotehnice ale cladirii
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3.2.Coeficientul global de izolare termica – componenta
G1 Coeficientul de izolare termica constituie un criteriu de apreciere globala a
nivelului de izolare termica a constructiei, reflectand valoarea fluxurilor termice pierdute prin anvelopa cladirii raportata la diferenta de temperatura si volum.
(C107/2-2005 (2))
Pentru cladirea care face obiectul prezentei expertize , valoarea efectiva a
acestui indicator este:
Anexa 1 par.8
Km
W
V
LG
j
jj
31
Km
WG ef 31 203,1
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4. Diagnoza starii de izolatie termica a cladirii
Km
W
e
APd
c
A
b
A
a
A
VG ref 3
43211
1(C107/2-2005 (3))
Km
WG ref 31 610,0 Anexa 1 par.3.2
G1ef > G1ref
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5. Situatia performantelor energetice ale cladirii
5.1. Consum anual de energie pentru incalzire: 5.1.1. Consum anual de energie pentru incalzire , la nivelul
spatiului incalzit ( fisa FC 1.1 ):
5.1.2. Consum anual de energie pentru incalzire , la nivelul sursei de incalzire (fisa FC 1.1):
5.2. Consum anual de energie pentru producerea apei calde de consum (fisa FC 1.2):
ankWhQanACM /1899 anmkWhqanACM 2/58,4 anmkgeCOACM 22 /55,2
ankWhQaninc /109241
ankWhQanSinc /285597 anmkWhqanSinc 2/61,688 anmkgeCOinc 22 /79,24
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5.3. Consum anual de energie pentru iluminat (fisa FC 1.3.):
5.4. Total consum anual de energie pentru incalzire , apa calda de consum si iluminat ( fisa FC 1):
ankWhQanILUM /13125 anmkWhqanILUM 2/20,35 anmkgeCOILUM 22 /61,19
ankWhQanTOT /300620
anmkWhqanTOT 2/83,724
anmkgeCOTOT 22 /95,46
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6. Incadrarea cladirii in scalele de eficienta energetica si notatia cladirii
Incadrarea cladirii in scalele de eficienta energetica s-a facut in conformitate cu metodologia prezentata in Normativul Mc001/2006 volumul 4-7/4, fiind urmatoarea:
- Pentru serviciul de incalzire: clasa G
- Pentru serviciul de preparare a apei calde de consum: clasa A
- Pentru serviciul de iluminat artificial: clasa A
- Pentru total servicii energetice: clasa F
Nota energetica acordata cladirii expertizate: N=43,96
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7. Cladirea de referinta
7.1.Definirea cladirii de referinta Cladirea de referinta este o cladire virtuala asociata cladirii reale, care are
aceiasi conformare geometrica si amplasament ca si cladirea reala, dar la care:
valoarea rezistentelor termice corectate sunt egale cu valorile normate minime;
suprafata elementelor de constructie vitrate reprezinta 15-20% din suprafata pardoselei, dar orientarea cardinala a acesteia este proportionala cu cea a cladirii reale;
valoarea factorului optic al suprafetelor vitrate (ατ)=0,26; valoarea ratei ventilatiei naturale corespunde valorii care asigura conditiile
normate privitoare la continutul maxim de noxe admise in aerul interior;
efrefrefR GGKm
wG 1131 571,0
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7.3.1 Consum anual de energie pentru incalzire:
7.3.1.1. Consum anual de energie pentru incalzire , la nivelul spatiului incalzit ( anexa 2.1.R ):
7.3.1.2. Consum anual de energie pentru incalzire , la nivelul sursei de incalzire ( anexa 2.1.R ):
7.3.2. Consum anual de energie pentru producerea apei calde de consum ( anexa 2.2.R ):
ankWhQanincR /64926
ankWhQanSincR /71472 anmkWhqanSincR 2/33,172 anmkgeCOincR 22 /33,35
ankWhQanACMR /1902 anmkWhqanACMR 2/59,4 anmkgeCOACMR 22 /56,2
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7.3.3. Consum anual de energie pentru iluminat ( anexa 2.3.R ):
7.3.4. Total consum anual de energie pentru incalzire , apa calda de consum si iluminat ( anexa 2.R ):
ankWhQanILUMR /13125 anmkWhqanILUMR 2/20,35 anmkgeCOILUMR 22 /61,19
ankWhQanTOTR /86499
anmkWhqanTOTR 2/56,208
anmkgeCOTOTR 22 /49,57
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Incadrarea cladirii de referinta in scalele de eficienta energetica:
- Pentru serviciul de incalzire : clasa C- Pentru serviciul de preparare a apei calde de consum : clasa A- Pentru serviciul de iluminat artificial : clasa A- Pentru total servicii energetice : clasa BNota energetica acordata cladirii de referinta: N=91,58
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Recomandări pentru reducerea costurilor prin îmbunătăţirea performanţei energetice a clădirii:
Solutii recomandate pentru anvelopa cladirii: Termoizolarea planseului peste subsol la exterior ( spre subsol ) cu polistiren extradur cu
grosimea de 10 cm; Termoizolarea peretilor exteriori cu placi de polistiren expandatcu grosimea de 10 cm; Termoizolarea planseului peste ultimul nivel ( spre pod )cu saltele de vata minerala de
grosimea de 20 cm; Inlocuirea tamplaria exterioare cuplate din lemn cu tamplarie cu tamplarie cu rame din PVC
echipate cu geamuri termoizolante tratate low-e, garnituri de etansare si feronerie specializata;
Solutii ecomandate pentru instalatiile aferente cladirii: Proiectarea si executarea unei instalatii de incalzirecentralizata cu corpuri statice, cu
centrala termica proprie cu functionare cu gaze naturale; Proiectarea si executarea unei instalatii de preparare apa cald de consum cu boilere
electrice montate local; Reproiectarea si executia unei instalatii de iluminat artificial pentru asigurarea nivelului
normal de iluminat in conditii de maxima eficienta energetica; Studiu privind posibilitatea de asigurare a necesarului de aer proaspat prin utilizarea
ventilatiei; Studiu privind necesitatea dotarii cladirii cu instalatii de climatizare.
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INFORMATII PRIVIND CLADIREA CERTIFICATAAnexa la CERTIFICATUL ENERGETIC nr. … /iunie
2011
1. Date privind constructia:
2. Date privind instalatia de incalzire interioara
3. Date privind instalatia de apa calda menajera
4. Informatii privind instalatia de climatizare
5. Informatii privind instalatia de ventilare mecanica
6. Informatii privind instalatia de iluminat
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RAPORT DE REZULTATEAdresa imobil : mun. Campulung , str. Fratii Golesti Nr. 1,
jud. Arges
Modulul I : Determinarea consumului anual de energie pentru incalzire
■ Regim de inaltime : S+P+1E ■ Aria construita : Ac=418,30m² ■ Aria desfasurata : Ad=947,10m² ■ Suprafata utila a spatiilor incalzite : Ainc=414,74m² ■ Suprafata birourilor : ABIR=256,59m² ■ Volumul incalzit : V=1705,84m3 ■ Indice de compactitate : A/V=0,718m-1 ■ Rata de ventilare a spatiilor : ABIR=256,50m²
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Suprafete exterioare ale elementelor de constructie ale anvelopei:
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Rezistentele termice ale elementelor de constructie ale anvelopei:
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Rezultate obtinute :
→ Rezistenta termica corectata medie pe anvelopa cladirii : RS=0,657m²K/W
→ Temperatura interioara medie a spatiului incalzit: θio=19,14ºC
→ Temperatura interioara redusa a spatiului incalzit: θiR=18,36ºC
→ Durata sezonului de incalzire: DZ=272 zile
→ Numarul corectat de grade-zile: NGZ=2175grade-zile
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DETERMINAREA NUMARULUI CORECTAT DE GRADE ZILE
Durata de grade zile se determina din conditia tir>terkDurata sezonului de încălzire : 272 zile (3 sep – 1 iunie);Numărul corectat de grade zile : 2175
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Consumul anual de energie pentru incalzire
→ Consum anual de caldura pentru incalzire , la nivelul spatiului: Qincan=109241kWh/an
→ Consum anual de caldura pentru incalzire , la nivelul sursei: Qincan=285597kWh/an
→ Consum anual specific de caldura pentru incalzire: qincan=688,61kWh/m²an
→ Indice emisii CO2 pentru incalzire , la nivelul sursei: ECO2inc=24,79kgCO2/m²an
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Modulul II : Determinarea consumului anual de energie pentru apa calda de consum
■ Numar de persoane : Np=25 persoane ■ Necesar zilnic specific de apa calda : a=5l/zi persoana ■ Numar zilnic de ore de livrare a apei calde : 10ore/zi
Rezultate obtinute :
→ Consum anual de apa calda de consum : VACMan=43,75m³/an → Consum anual de caldura pentru ac , la nivelul sursei : Qacmcan=1899kWh/ an → Consum anual specific de caldura pentru acm: qacmcan=4,58kWh/m²an → Indice emisii CO2 pentru acm, la nivelul sursei : ECO2acm=2,55kgCO2/m²an
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Modulul III : Determinarea consumului anual de energie pentru iluminat
■ Puterea electrica instalata : P=4,32kW ■ Sistemde control al iluminatului : manual ■ Durata de utilizare anuala : tu=2500ore/an
Rezultate obtinute :→ Consum anual de energie pentru iluminat : Qilan=13125kWh/ an → Consum anual specific de energie pentru iluminat : qilcan=35,20kWh/m²an → Indice emisii CO2 pentru acm, la nivelul sursei : ECO2il=19,61kgCO2/m²an
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Rezultate finale:
→ Consum anual de energie: QTan=300620kWh/ an
→ Consum anual specific de energie : qTan=724,83kWh/m²an
→ Indice emisii echivalent CO2 : ECO2Tan=45,95kgCO2/m²an
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8. Lista masurilor de modernizare energetica a
cladirii,Anexa 1E
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8. Lista masurilor de modernizare energetica a cladirii,Anexa 1E
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9. Raport de audit
1. Prezentarea soluţiilor de modernizare energetică a clădirii
Urmare a interpretării rezultatelor expertizei energetice se propun următoarele măsuri :
1.1. Măsuri pentru partea de construcţii 1.1.1. Termoizolarea pereţilor exteriori prin placarea cu
polistiren expandat cu grosimea de 10cm – solutia C1 , detalii execuţie A,B,C,D .
Prin aplicarea acestei masuri , rezistenta termica corectata a peretilor exteriori se modifica dupa cum urmeaza :
# inainte de modernizare:
# dupa modernizare: WKmR PE /68,0' 2
WKmR PEM /09,2' 2
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1.1.2. Termoizolarea pereţilor adiacenti la pod prin placarea cu polistiren expandat cu grosimea de 10cm – solutia C2 , detalii execuţie A,B,C,D .
Prin aplicarea acestei masuri , rezistenta termica corectata a peretilor exteriori se modifica dupa cum urmeaza :
# inainte de modernizare:
# dupa modernizare : WKmR PePOD /62,0' 2
WKmR PePODM /45,2' 2
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1.1.3. Termoizolarea planseului de pod prin montarea unui strat de 25 cm saltele de vata minerala - soluţia C3, detaliu de executie E .
Prin aplicarea acestei masuri , rezistenta termica corectata a planseului de pod se modifica dupa cum urmeaza :
# inainte de modernizare:
# dupa modernizare: WKmR PPOD /68,0' 2
WKmR PPODM /68,3' 2
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1.1.4. Termoizolarea planşeului peste subsol prin refacerea integrala a acestuia ( placa de beton armat termoizolata la fata inferioara cu placi din polistiren de 10cm ) solutia C4 , detaliu de executie F .
Prin aplicarea acestei masuri se asigura respectarea cerintei de rezistenta a planseului peste subsol , iar valorile rezis-tentelor termice corectate se modifica dupa cum urmeaza :
# inainte de modernizare:
# dupa modernizare:
WKmR PSUB /83,0' 2
WKmR PPODM /17,2' 2
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1.1.5. Înlocuirea integrală a tâmplariei exterioare cu tâmplărie performantă cu rame din PVC cu profil pentacameral si geamuri termoizolante 4-14-4, cu o suprafaţă tratată low-e şi umplute cu argon –soluţia C5 , detaliu montaj A .
Prin aplicarea acestei masuri , rezistenta termica corectata a tamplariei exterioare se modifica dupa cum urmeaza :
# inainte de modernizare:
# dupa modernizare:
Un alt efect al inlocuirii tamplariei exterioare este acela al reducerii ratei ventilatiei de calcul , care se modifica dupa cum urmeaza :
# inainte de modernizare:
# dupa modernizare:
WKmR FE /43,0' 2
WKmR FEM /52,0' 2
11,1 hnaC
16,0 hnaCM
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1.2. Măsuri pentru partea de instalaţii
1.2.1. Proiectarea si executia unei instalatii de incalzire centrala cu corpuri statice dotate cu robinete termostatate si micro-centrala termica cu functionare in regim de condensatie care sa inlocuiasca actualul sistem de incalzire cu sobe cu de teracota cu combustibil solid – solutia I1 .
Prin aplicarea acestei soluţii randamentul total al instalatiei de incalzire se modifica dupa cum urmeaza :
-înainte de modernizare: -după modernizare:
383,0CS
890,0GN
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1.2.2. Proiectarea si executia unei instalatii de preparare locala a apei calde de consum cu boilere electrice de mica capacitate - solutia I2 .Prin aplicarea acestei soluţii, se urmareste asigurarea livrarii apei calde, in conditiile mentionate de STAS 1478/1990 .
1.2.3. Reproiectarea si executia unei instalatii electrice noi de iluminat si prize- solutia I3 .Prin aplicarea acestei soluţii , se urmareste asigurarea nivelului normat de iluminat cu costuri energetice minime , in conditiile mentionate de NP061/2002 si asigurarea conditiile siguranta la foc a constructiei si cele privind sanatatea si siguranta oamenilor .
1.2.4. Studiu si solutie de asigurare a necesarului de aer proaspat cu un
sistem de ventilatie naturala controlata , prin utilizarea cosurilor de fum disponibile dupa executia instalatiei de incalzire centralizata cu corpuri statice , eventual completata cu ventilatie mecanica locala de mica putere - solutia I4 .Prin aplicarea acestei soluţii , se urmareste realizarea posibilitatilor de control a ratei de ventilatie la nivelul de respectare al parametrilor de calitate al aerului interior.
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2. Prezentarea principalelor caracteristici termoenergetice ale construcţiei modernizate prin implementarea măsurilor propuse şi
interpretarea acestora prin comparaţie cu situaţia existentă
2.1 Caracteristicile termofizice ale elementelor de construcţie de închidere ale anvelopei clădirii
Rezistenţele termice ale elementelor de construcţie de închidere ale anvelopei cladirii in starea existenta sunt calculate în anexa 1 .
Rezistenţele termice ale elementelor de construcţie de închidere ale anvelopei după modernizare sunt calculate în anexa 1.M. ţinând cont de modificările introduse prin punerea în operă a măsurilor propuse .
Valorile rezistenţelor termice corectate ale elementelor de construcţie, înainte şi după reabilitare, sunt următoarele :
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2.2 Coeficientul global de izolare termică – componenta G1
Valoarea coeficientului global de izolare termică al clădirii după modernizare este calculat în anexa 1M, ţinând cont de modificările introduse prin punerea în operă a măsurilor propuse şi are următoarele valori , înainte şi după modernizare:
Concluzii: 1. Nivelul de izolare termica a clădirii după modernizare se
încadrează în nivelul de performanţă normat . 2. Punerea in opera a măsurilor propuse de modernizare ale
elementelor de constructie de inchidere pot conduce la o re-ducere a fluxurilor termice pierdute prin conductie prin suprafata acestora la cca 30% faţă de situaţia clădirii în starea existenta .
KmWG ef2
1 /203,1 KmWG M2
1 /344,0 KmWG f2
Re1 /610,0
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2.3 Performantele energetice ale cladirii modernizate
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3. Estimarea efectului energetic al măsurilor propuse
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EVOLUTIA PE DURATA DE AMORTIZARE A ΔVNA
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TABEL COMPARATIV CU CARACTERISTICILE REZULTATE DIN PRELUCRAREA DATELOR PENTRU CLADIREA DE BAZA CU
PROCEDURILE DE CALCUL DISPONIBILE
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CONSUMUL ANUAL DE ENERGIE PENTRU INCALZIRE
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11. Studiu privind necesitatea dotarii cladirii cu
instalatii de climatizare
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