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Overview and analysis of current BIPV products: new criteria for supporting the technological transfer in the building sector

Abstract

[EN] The growing demand for nearly-Zero Energy Buildings is rapidly contributing to change the building skin from being a passive barrier towards a sensitive and active interface. Building Integrated Photovoltaics (BIPV) is a unique solution for delivering clean, safe, affordable and decentralized electricity to people transforming the building surfaces in active solar collectors. Despite photovoltaic (PV) technology and their basic usage are today known to everybody, the particular requirements for building integration have brought to the surface some issues over the years so that BIPV is still a niche market. Starting from this observation, the paper presents the results of an investigation on the current market of BIPV products for roofs and façade. The analysis aimed to identify the relevant possibilities the products today offer and the level of information that the producers make available within the technical description of BIPV systems. After disclosing the actual lack of information in comparison to conventional building products, the authors propose to implement a new “building-based” approach that could support the BIPV market by including a more comprehensive description of the product’s quality (today mainly comprising electrical and basic physical features). Such a “building-technology” perspective, also considering the recent normative framework in BIPV field, is expected to encourage the technological transfer of PV in the building sector by facilitating the daily work of architects, installers and the whole value chain.

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Overview and analysis of current BIPV products: new criteria for supporting the technological transfer in the building sector

Author: Bonomo, Pierluigi,Chatzipanagi, Anatoli,Frontini, Francesco
Publisher: Universitat Politècnica de València
Year: 2015
DOI: 10.4995/vitruvio-ijats.2015.4476
Source: https://riunet.upv.es/bitstream/10251/69302/1/4476-15354-2-PB.pdf
66
SUPSI, F.F on ini
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ABSTRACT
O e iew and analysis o cu en BIPV p oduc s: new
c i e ia o suppo ing he echnological ans e in he
building sec o
Pie luigi Bonomo1, Ana oli Cha zipanagi1, F ancesco F on ini1
1 Uni e si y o Applied Sciences and A s o Sou he n Swi ze land - Ins i u e o Applied
Sus ainabili y o he Buil En i onmen (SUPSI-ISAAC), Campus T e ano, Canobbio-Lugano,
Swi ze land
The g owing demand o nea ly-Ze o Ene gy Buildings is apidly con ibu ing o change he building
skin om being a passi e ba ie owa ds a sensi i e and ac i e in e ace. Building In eg a ed
Pho o ol aics (BIPV) is a unique solu ion o deli e ing clean, sa e, a o dable and decen alized
elec ici y o people ans o ming he building su aces in ac i e sola collec o s. Despi e pho o ol aic
(PV) echnology and hei basic usage a e oday known o e e ybody, he pa icula equi emen s o
building in eg a ion ha e b ough o he su ace some issues o e he yea s so ha BIPV is s ill a niche
ma ke . S a ing om his obse a ion, he pape p esen s he esul s o an in es iga ion on he cu en
ma ke o BIPV p oduc s o oo s and açade. The analysis aimed o iden i y he ele an possibili ies
he p oduc s oday o e and he le el o in o ma ion ha he p oduce s make a ailable wi hin he
echnical desc ip ion o BIPV sys ems. A e disclosing he ac ual lack o in o ma ion in compa ison o
con en ional building p oduc s, he au ho s p opose o implemen a new “building-based” app oach
ha could suppo he BIPV ma ke by including a mo e comp ehensi e desc ip ion o he p oduc ’s
quali y ( oday mainly comp ising elec ical and basic physical ea u es). Such a “building- echnology”
pe spec i e, also conside ing he ecen no ma i e amewo k in BIPV ield, is expec ed o encou age
he echnological ans e o PV in he building sec o by acili a ing he daily wo k o a chi ec s,
ins alle s and he whole alue chain.
KEYWORDS
BIPV, BIPV ma ke , BIPV p oduc s, echnological ans e , nZEB
h p://dx.doi.o g/10.4995/ i u io-ija s.2015.4476
68
1. INTRODUCTION AND MOTIVATION
The g owing demand o nea ly-Ze o Ene gy
Buildings (nZEB), as in oduced by he
Eu opean Pe o mance Building Di ec i e
(Di ec i e 2010/31/EU, 2010), he Di ec i e
on ene gy e iciency (Di ec i e 2012/27/EU,
2012) along wi h he con empo a y pa adigm
o sus ainabili y, is apidly con ibu ing o
change he building skin om being a passi e
ba ie owa ds an inc easingly sensi i e and
ac i e in e ace. Building is a key-sec o o
cu en policies on ene gy e iciency since i
is esponsible o app oxima ely he 40% o
he inal ene gy consump ion in Eu ope (Web
link 1). Ene gy sa ing and he p oduc ion
o enewable ene gies a e oday essen ial
s a egies o educing he p ima y ene gy needs
o cons uc ions (Boie, 2014). Pho o ol aics
(PV) is conside ed an essen ial echnology
o he u u e ene gy p oduc ion and Building
In eg a ed Pho o ol aics (BIPV) is a unique
solu ion o deli e ing clean, sa e, a o dable and
decen alized elec ici y o people ans o ming
he building su aces in ac i e sola collec o s
(Moosa ian, 2013). “The eno mous po en ial o
PV and i s bene i s o socie y a e mo e ob ious
han e e . PV is becoming a mains eam playe
wi hin he powe sys em inc easingly deli e ing
clean, sa e, a o dable and decen alized
elec ici y o people” (Web link 2). In 2011 he
Swiss Fede al Council de eloped a long- e m
ene gy policy (“Ene gy S a egy 2050”) based
on p o ound changes in ene gy pe spec i es
(Web link3, Web link 4). In he ecen yea s he
PV ield has encoun e ed many changes in e ms
o echnological e olu ion, p oduc ion, ins alled
capaci y as well as applica ion me hods (Lo e ski,
1993, G een, 2005, Hosenuzzaman, 2015) so
ha nowadays he basic usage o PV echnology
is known o e e ybody.
Some yea s ago, PV echnologies we e s ill
conside ed a b eak h ough inno a ion ha
could be applied in s ic cases and wi h
high cos . They s a ed being used o space
applica ions and hanks o he p og ess in
new ma e ials, manu ac u ing me hods and
be e unde s anding o hei beha iou and
pe o mance, PV s a ed becoming mo e and
mo e popula and accep ed as an al e na i e
ene gy p oduc ion sys em o e es ial
applica ions (S obl, 2009).
BIPV has enabled he implemen a ion o PV, no
only as a echnical de ice bu also as a building
ma e ial, pa o he building en elope and i s
exp essi eness in con empo a y a chi ec u e.
The BIPV ma ke had o wai long ime o gain
c edibili y in compa ison o he con en ional PV
ma ke . Despi e manu ac u e s oday can p o ide
he building sec o wi h a a ie y o in e es ing
p oduc s and cus omiza ion le els, eady o be
used by a chi ec s and planne s, he adop ion
and applica ion o BIPV by he building sec o is
ela i ely slow. I is expec ed ha he Eu opean
BIPV ma ke will expe ience a apid g ow h in he
yea s o come, hanks o some d i e s such as he
Eu opean di ec i e p omo ing he nea ly-Ze o
Ene gy Buildings (Web link 5, F on ini, 2014). Bu ,
apa he posi i e ole o hese leading d i e s,
o he aspec s, s ill obs uc ing he BIPV g ow h,
will ha e o be ecognized and o e come in he
nea u u e.
The i s aspec in ou pe spec i e is s ill cul u al.
In he case o BIPV, di e en ly om a con en ional
PV ins alla ion (Building Added Pho o ol aic,
BAPV), a di e se concep o “in eg abili y” is
equi ed om he Ea ly Design Phase (EDP),
acco ding o a syne gic app oach ha b idges
building and ene gy knowledge. The di icul y
o unde ake a eally in eg a i e app oach om
he i s s ages o design, me ging ene gy, PV
and building equi emen s, emains one o he
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s onges ba ie s o BIPV ma ke p oli e a ion
(Web link 6, Web link 7, Web link 8). Also he
di icul ies o conside and compa e BIPV wi h
o he building cladding ma e ials a he han
wi h con en ional PV, is o en he main cause
leading o he issue o una o dable cos o BIPV.
Mo eo e he success o c ea ing new BIPV
ma ke s depends on he capabili y o o e come
o he p ac ical ba ie s as iden i ied also by he
IEA SHC Task 41 (Web link 9): a good ma ke
a ailabili y ensu ing a good cus omizabili y
and con incing aes he ics, go e nmen al and
local incen i es (Hosenuzzaman, 2015, Azadian,
2013, Sa asa-Maes o, 2013) o ensu ing cos -
e ec i eness, he de elopmen o speci ic
s anda ds and e e ence codes o suppo ing
he building p ac ice, and, mo e in gene al, a
conce ed e o by playe s in he supply chain
o wo k oge he owa ds an in eg a ed design.
In his di ec ion, he pionee ing e e ences
Figu e 1.
BIPV opaque açade. C ys alline
and hin- ilm echnologies
ha e been used as cladding
ma e ial. Re-cladding in he
e u bishmen o Palazzo
Posi i o, Chiasso, Swi ze land.
(as in example Fig.1) de eloped by a chi ec s
and açade make s play an impo an ole as a
ma ke d i e showing he quali y, he beau y
and he possibili ies in a chi ec u e. Mo eo e
he absence o clea s anda ds and e e ence
no ma i e o BIPV sys em’s quali ica ion
is ano he issue: only a e y ew indus ies
make a ailable oday, along wi h he elec o-
echnical ce i ica ion, he building ce i ica ions
complying wi h Cons uc P oduc s Regula ion
305/2011 (Web link 10): his means ha he so
acclaimed mul i unc ionali y o BIPV is no always
ansla ed in clea building equi emen s so ha
he CE-ma king o a BIPV sys em, as a building
p oduc , is o en una ailable.
I , on he one hand, indus y demons a ed
ha BIPV echnology is easible, eliable and in
some cases e en a o dable, on he o he hand
he in o ma ion abou hese sys ems is s ill no
enough and BIPV has no ye ully en e ed he
building sec o (and i s s akeholde s such as
a chi ec s, building enginee s, building indus y,
con ac o s, e c.) in e ms o language, lexicon,
equi emen s and app oach. An example, as
ollowing epo ed, is he ac ha un il now he
documen a ion a ailable o BiPV p oduc s is
o en s ic ly limi ed o elemen a y da ashee s
di ec ly impo ed by con en ional PV panels
and collec ing only basic (mainly elec ical)
pe o mance and ea u es (e.g. dimensions,
weigh ) (F on ini, 2014, Pe e Jellea, 2012,
Bizza i, 2011, Ce ón, 2013, Ve bene, 2014). As a
consequence building equi emen s and p ope
analysis o cons uc ion in e aces wi h he
building skin, compa ibili y wi h building laye s
and ma e ials, echnical de ails o in eg a ion
in building echnical elemen s, main enance
ins uc ions, e c. a e o en missing. The e o e
only agmen ed and pa ial in o ma ion a e
a ailable du ing he design p ocess hus oday
he p oblem is no he use o PV i sel bu he use
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o PV as ac i e building ma e ial (F on ini, 2013).
Lessons lea ned om he his o y o “ echnology
in a chi ec u e” each us ha he ans e o new
echnologies in building ield has always had
a ecu ing and complex p ocess. The “new”
is ini ially used wi hin he adi ional p ocess,
ancho ed o pas a che ypes and o he echniques
o adi ion, wi hou o iginally in oducing a link
be ween echnological inno a ion and inno a ion
in building and a chi ec u e. The old legacies a e
only p og essi ely and slowly o e come, mo ing
om pe manence (use o “new” acco ding o
adi ional/old p ocesses) owa ds inno a ion o
a chi ec u e when he new echnology became
an e ol ing ac o o he whole building concep
(Bonomo, 2015).
In his amewo k, we expec ha a deepe
in o ma ion conce ning BIPV in e ms o building
quali ies and equi emen s will become a c ucial
d i e in o de o o e come he las ba ie s and
o push BIPV as a alid al e na i e o con en ional
building solu ions bo h om a cons uc ional
and a chi ec u al pe spec i e.
2. METHODOLOGY
In he concep ual amewo k desc ibed abo e,
he documen a ion and he analysis o he
s a e-o -a and al eady occu ing e olu ion,
bo h in e ms o a ailable echnologies and
e e ence examples p o ides he s a us o he
“ echnological ans e ” and a eco d o how a
echnology has come. The pape , s a ing om
he ca ego iza ion o PV sys ems o be used in
buildings, will in es iga e he con en s and he
na u e o p oduc s’ in o ma ion oday a ailable
by p oduce s. As a esul , a e iden i ying he
sca ci y o a ailable in o ma ion, a new app oach
o a mo e accu a e desc ip ion o BIPV elemen s
will be p oposed.
Following he p emises and he mo i a ion
al eady explained, he me hodological layou
consis s in:
1. De ini ion o a e e ence ca ego iza ion
o BIPV p oduc s acco ding o a “building-
echnology” app oach;
2. Analysis o he main echnological al e na i es
exis ing on he ma ke and iden i ica ion o
in o ma ion p o ided by manu ac u e s o
desc ibing echnical ea u es o BIPV p oduc s;
3. Iden i ica ion o missing in o ma ion/da a in
compa ison o he building sec o and p oposal
o possible imp o emen s wi h he goal o
suppo a mo e e ec i e echnological ans e
o PV p oduc s in he building sec o (as esul s).
2.1 REFERENCE CATEGORIZATION OF BIPV
SYSTEMS
The ca ego iza ion has he goal o o ganizing
he p oduc analysis acco ding o a e e ence
g ouping clea ly linked o he building skin.
Many a emp s on ca ego izing BIPV p oduc s
ha e been documen ed along he way. The
IEA (Web link 11), BBC Resea ch (Web link 12),
NREL (Web link 13), WIP Munich h ough he
Sun ise p ojec (Web link 14), SEAC (Web link
15), SUPSI (Web link 16) ha e all exp essed a
de ini ion o BIPV. Mo eo e , plen y o o he
de ini ions o “Building In eg a ion”, mo e o
less cohe en , ha e been ela ed o na ional and
local egula ions o incen i es (e.g. Feed-in-
Ta i s and o he suppo ing measu es). In he
amewo k o his pape a new classi ica ion was
pe o med, by means o he e e ence egula o y
o he pe o mance-based building design
(UNI 8290, 1981) in he di ec ion o a common
language be ween PV and building sec o . Thus,

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he analysis was based on a scheme conside ing
(see Fig. 4 as example):
sȩ 4ECHNOLOGICALȩUNITSȩEGȩFAǭADE
sȩ #LASSȩOFȩTECHNICALȩELEMENTSȩEGȩ3TICKSYSTEMȩ
Uni ized cu ain wall, S uc u al Sealan Glazing
SSG, poin - ixed açade, e c.);
sȩ 4ECHNICALȩSOLUTIONSȩEGȩTECHNICALȩALTERNATIVESȩ
such as wa e igh /open join , e c.).
2.2 PRODUCT’S DATA ANALYSIS
The p oduc ’s analysis and da a acquisi ion was
mainly pe o med h ough he e-elabo a ion o
echnical and scien i ic inpu de i ed om he
wide da abases a ailable on he websi e www.
bip .ch (Web link 17), p epa ed by SUPSI in
collabo a ion wi h Ene gieSchweiz (ES) and he
Figu e 2.
The web da abase published
on he websi e www.bip .
ch. I collec s mo e han 100
p oduc s ep esen ing he main
building skin elemen s, and
o each p oduc a echnical
da ashee is a ailable (sou ce:
SUPSI).
Swiss Fede al O ice o Ene gy (SFOE). The lis o
BIPV p oduc s is he co e o he websi e (Fig. 2)
oge he wi h he examples o buildings.
Fu he in o ma ion and da a ha e been collec ed
h ough a esea ch on manu ac u e ’s websi es
and echnical da ashee s, he a endance o
na ional and in e na ional exhibi ions and
symposiums as well as he di ec con ac /
collabo a ion wi h manu ac u e s, a chi ec s and
o he s akeholde s in e es ed in sola ene gy.
This allowed ob aining ealis ic in o ma ion as
well as a mo e comp ehensi e pe spec i e.
Gene al Aspec s Technological Aspec s
P oduc name Technology
P oduce Powe [W]
Coun y Speci ic powe [W/m2]
Ca ego y F on glass
Sub-ca ego y Composi ion o PV modu-
le
Cus om-made possibili-
ies
S uc u al Aspec s Wa an ies & Ce i ica-
ions
Module dimensions
[mm x mm x mm] P oduc wa an y [y s]
Module a ea [m2] Powe wa an y [y s]
Cell numbe Ce i ica ions
Cell dimensions [mm x
mm]
Cell a ea [m2]
Weigh [kg]
Minimum inclina ion [°]
F ame
Table 1.
Da a collec ion o he p oduc
analysis. Main da a a ailable
om he manu ac u es.
72
The in es iga ion ca ied ou in ol ed no only
elec ical cha ac e is ics bu also all he o he
ea u es a ailable om da ashee s such as he
composi ion o he PV module (cells, laye s,
ames, e c.) and he moun ing/in eg a ion
sys em, he da a on dimensions, weigh , ma e ial
laye ing, he ce i ica ions and i s wa an ies as
decla ed by he manu ac u e . In Tab. 1, a lis o
all he main in o ma ion ga he ed is p esen ed.
The able is di ided in o ou main ca ego ies:
gene al, echnological, s uc u al and wa an ies
& ce i ica ions. E en hough mo e han 100
p oduc s a e published on www.bip .ch, 47
sys ems we e chosen o a mo e de ailed analysis
-including bo h oo and açade applica ions-
since hey we e conside ed ep esen a i e
o he cu en ma ke o he pu poses o his
in es iga ion.
The analysis was pe o med h ough he
Figu e 3.
Analysis o in e aces be ween
he BIPV cladding and he
building skin (sou ce: SUPSI).
collec ion o ele an da a in syn he ic ables o
each p oduc ( ha , o b e i y, ha e no been
included in he pape bu can be eques ed o
he au ho s), including bo h Building Applied
PV (BAPV) and BIPV sys ems, gi ing a de ailed
o e iew o all he main ea u es desc ibed in
p oduc s’ da ashee s and epo ed in Tab. 1.
Also an e o aimed o unde s and how BIPV
p oduc s we e co ela ed wi h he building skin
in e ms o cons uc ion echnology, was ca ied
ou o he main echnological solu ions (Fig. 3).
2.3 PROPOSITION OF A NEW INFORMATIVE
APPROACH FOR BIPV
The las pa o his pape p esen s he au ho s’
p oposi ion o a new se o in o ma ion use ul o
be e suppo an e ec i e echnological ans e
o BIPV in he building sec o . By analysing he
websi es o building manu ac u e s ha p oduce
açade/ oo sys ems (claddings, windows,
Figu e 4.
Example o BIPV sys ems
as elemen s o he building
echnological sys em
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cu ain-walls,…) he in es iga ion ocused on he
ype and con en s o he echnical documen a ion
a ailable on he cu en ma ke . This allowed o
de ine he le el o in o ma ion ac ually suppo ing
he design phase in he building sec o and o
compa e i wi h he cu en BIPV indus y, inding
also sugges ions and e e ences.
3. ANALYSIS OF MARKET
INFORMATION FOR BUILDING ADDED
PV (BAPV) PRODUCTS
In his ca ego y en e all p oduc s ha a e used
as an added/o e lapped elemen o he building
en elope, usually h ough he ins alla ion o a
special moun ing sys em. These p oduc s do no
always eplace a building laye as a whole. Fo
his pape he wo main ca ego ies ep esen ing
he echnological uni s will be analysed: oo and
açade p oduc s.
3.1 ROOF BAPV PRODUCTS
In his sub-ca ego y, hi een p oduc s ha e
been e alua ed. The as ening sys em plays
he p ima y ole in hese p oduc s (since he
sys em usually consis s in a moun ing/ancho ing
ki o ixing sola panels) and bo h compa ible
and speci ically p oduced PV modules can
be used. In he case o as ening sys ems ha
inco po a e speci ic modules, he desc ip ion
o he module’s elec ical cha ac e is ics is
a ailable. Fo he majo i y o he p oduc s, he
manu ac u e gi es a desc ip ion o he as ening
sys em along wi h a sepa a e ins alla ion manual
epo ing he whole ki o componen s (p o iles,
aming, hooks, clamps, e c.), he ins alla ion
phases and he moun ing p ocedu es. When
in es iga ing he dimensions o he p oduc , i
is usually no cla i ied whe he hey a e e e ing
o he ins alled sys em o only he modules.
As a as he weigh o he as ening sys em is
conce ned, he si ua ion ge s mo e complica ed
since p oduce s conside di e en e e ences
in da ashee s. Some p oduce s s a e ha he
weigh is e e ing o he module alone,o he
conside only he weigh o he moun ing
sys em, o he p o ide he weigh including
he whole sys em. Almos hal o he sys ems
in es iga ed equi e amed modules because
he p oduc s a e basically consis ing o ails and
clamps ha inco po a e he module along wi h
i s ame. A ew decla e no ame and some gi e
no in o ma ion on he subjec . The a ailabili y
o cus om-made BAPV p oduc s ( as ening
sys ems) o oo s is a he limi ed in compa ison
o ha o BiPV p oduc s since hese sys ems
a e concei ed as s anda dized ki uni e sally
p oduced. Re e ing o he as ening sys em
i sel and no o he PV modules used along wi h
i , he ypical cus omiza ion possibili ies a e he
dimensions o he sys em, he sys em e sion,
he edge co e colou and he p o ile ype and
colou . E en hough hese applica ions a e qui e
con en ional and almos exclusi ely o oo s,
he possible in e e ences o ames, hooks,
ballas ing and ixings wi h he building laye ing
(wa e igh ness, mechanical s abili y, sa e y, e c.)
o he po en ial low e ec i eness o his sys ems
in special con ex s (e.g. e y snowy o windy a eas
wi h high loads) a e some examples ega ding
o which he impo ance o a p ope in o ma ion
assis ing he design p ocess appea s c ucial. The
wa an ies p o ided by he p oduce s we e ound
o be signi ican ly unclea o wha hey we e
e e ing o. The same p oblem occu s also o
he ce i ica ions o he p oduc s. Mos p oduc s
ha e only elec o- echnical ce i ica ions o he
PV modules and no o building equi emen s.
74
3.2 FACADE BAPV PRODUCTS
Eigh p oduc s ha e been analyzed in his
sub-ca ego y. Hal o hem a e s a ed o be
compa ible wi h any PV module a ailable in he
ma ke . The desc ip ion o he sys em by he
p oduce gene ally includes de ails on ma e ials,
p o iles, componen s and ca alogues o
elemen s a ailable. Also he ins alla ion manual
is p o ided o he majo i y o he p oduc s bu
wi h he limi a ion abo e men ioned in e ms
o in e ac ion wi h he building en elope. In
addi ion, p oduce s s a ing he compa ibili y o
hei as ening sys em wi h speci ic PV modules
p o ide in o ma ion conce ning he panel.
Limi ed in o ma ion was ound conce ning bo h
he module and sys em dimensions. Sca ci y o
in o ma ion was iden i ied conce ning need o
ame o he modules o be used in he as ening
sys em. Few manu ac u e s p o ide cus om-
made possibili ies. One in e ms o colo o he
aluminum p o iles and e aine s, one p o ides
cus omized modules (dimensions, colo ). In one
case he possibili y o di e en ma e ials used
and he colo a ie y o a complemen a y pa
o he sys em (a e lec o ) was decla ed. Again,
a lack o wa an ies o p oduc is iden i ied
and when decla ed, hey a e e e ing mainly
o he PV panel and no o he as ening sys em.
Ve y ew a e he p oduc s o which building
ce i ica ions (such as he DIN 18516, DIN 18008-
3) a e decla ed.
4. ANALYSIS OF MARKET
INFORMATION FOR BUILDING
INTEGRATED (BIPV) PRODUCTS
This ca ego y con ains all p oduc s ha may be
used in he building en elope by eplacing he
adi ional cons uc ion ma e ial. Again, also
in his case, only wo main ca ego ies will be
analyzed: oo and açade.
4.1 ROOF BIPV PRODUCTS
In his sec ion se en een p oduc s ha e been
analyzed. Despi e he a ac i eness o hin ilm
echnology p oduc s (appea ance disc e ion,
su oundings ha moniza ion, e c.) all he
iden i ied p oduc s a e c ys alline. In he pas a
big selec ion o hin ilm modules o building
in eg a ion pu poses was o e ed by p oduce s
bu in he las ew yea s e y well-known
manu ac u e s ha e ceased p oduc ion. On he
o he hand, inno a i e sys ems ha e eme ged
ying o join aes he ic, mul i- unc ionali y and
cos e ec i eness so ha hey a e expec ed o
d i e he BIPV indus y in he ollowing yea s.
In his case, BiPV modules ha e e ol ed om
low powe o mo e powe ul modules eaching
Figu e 5.
Example o a BIPV oo sys em
consis ing in a uni ized and
p e-assembled elemen s easy
o ins all on oo s uc u e,
ensu ing wa e esis ance,
he mal insula ion and
p oduc ion o elec ic ene gy
hanks o he in eg a ed PV
(Sou ce: Designe gy SA)
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81
Figu e 11.
Technical ea u es ha
could be included in a new
o ma o da ashee o BIPV
p oduc s in a building-based
app oach.
on hema ic opics such as he mal e iciency,
i e sa e y, du abili y, en i onmen al impac ,
acous ics and heal h p o iding.
In his di ec ion, ha is expec ed o in ol e all
he alue chain in a signi ican e o and wi h a
ce ain ime du a ion, a g adual enhancemen
o in o ma ion could be a igh app oach.
The e ision o he da ashee s om he ac ual
o ma in o mo e use ul and comple e echnical
documen s could be a i s ac ion aken, in he
pe spec i e o p epa e, s ep by s ep, a iche
o e in e ms o p ac ical ools.
SUPSI al eady s a ed some in es iga ions by
analyzing some a che ypal solu ions o di e en
cons uc ional sys ems ( oo s and açade, high
and low ene gy e iciency a ge s, “d y” sys em
o massi e ones, e c.), wi h he scope o assess
he ole o PV wi hin he whole en elope solu ion
(Bonomo P. e al., 2014) .
By conside ing he whole building skin as a
uni a y echnological elemen , he inal esul s
ha e been collec ed in da a-shee s (a sc eensho
is epo ed in Fig. 11) epo ing, along wi h
he con en ional elec ical da a o PV, also
in o ma ion conce ning he ene gy pe o mance
o he building skin (U alue, pa ame e s o
he mal ine ia, e c.), he building equi emen s,
he en i onmen al (embodied ene gy) and
economic in o ma ion (cos s and bene i s). This
app oach, ocused on a mul i-c i e ia analysis,
demons a ed he need o p ojec de elope s
(a chi ec s, ins alle s, e c.) o conside he se e al
in e ac ing aspec s o BIPV and he po en ials
o compa e i , h ough common pa ame e s,
wi h con en ional building p oduc s. Resul s
also con i m ha a mul i-c i e ia pe spec i e is
necessa y o e alua ing he added alues and
bene i s o BIPV as an in eg a ed pa o he
building skin.
The ole o p oduce s, as one o he key-playe s,
is ecognized impo an in co e ing he gap
be ween PV and building sec o . I is expec ed
ha , by in oducing all he expe ience and
complexi y o he “building wo ld”, i will be
possible o co e a i s s ep and o mo i a e he
“building di ec ion” o PV. In his amewo k a
change o pe spec i e is encou aged and, as
summa ized in Tab. 4, s a ing om da ashee s
and echnical in o ma ion his new app oach
should be angibly aken in o accoun .

82
Table 4.
O e iew o possible
in o ma ion ha could be
conside ed in da ashee s and
echnical documen s o BIPV
p oduc s wi h he pu pose o
enhance he PV ans e in he
building sec o .
Gene al
aspec s
PV
Technological
Aspec s
Aes he ical
Aspec s
P oduc
in o ma ion and
de ails
PV echnology
in o ma ion
Cus omizabili y a
cell scale (colo ,
size, e c.)
Clea iden i ica ion
o he PV ole
in he building
en elope. (Class
o echnical
elemen , Technical
solu ion, e c.)
Elec ical
da a (powe ,
empe a u e
coe icien s, e c.)
Cus omizabili y
a module scale
(laye ing, size,
shape, colo , e c.)
Iden i ica ion o
building con-
s uc ion ypolo-
gies (e.g. ligh wei-
gh , massi e, e c.)
Elec ical aspec s:
solu ions o
in eg a e cabling
sys ems, Junc ion
box, mic o-in e -
e s, ba e ies, e c.
Cus omizabili y
a building scale
(moun ing sys em
possibili ies, as-
semblage op ions,
e c.).
Clea d awing:
e.g. exploded
axonome ic iew,
de ails, e c.
Indica ions on
basic elec ical
ins alling p oce-
du es
Co ela ion o
cus omizabili y
wi h ene ge ic,
echnological and
economic aspec s
Cos (in es men
cos , LCC)
Ope a ion and
main enance s a-
egies
Ca alogue o pos-
sible con igu a-
ions
Digi al compo-
nen a ailable (e.g.
CAD, BIM objec s)
Re e ence exam-
ples o each p o-
duc s
Physical and
Pe o mance
Aspec s
Cons uc ion
Aspec s
S anda ds
Wa an ies
Dimensional and
physical aspec s
(size, weigh , e c.)
De ails o each
laye o he BIPV
panel (ma e ials,
pe o mance, e c.)
Elec ical s an-
da ds (Low Vol a-
ge Di ec i e)
The mal and hy-
g ome ic aspec s
(U alue, anspa-
ency, g alue,
he mal ine ia
da a, ai igh ness,
he mal b idge
da a, mois u e
con ol da a)
Building equi-
emen s o be
sa is ied o he
speci ic building
skin applica ion
Building s anda ds
o be espec ed
o each class
o equi emen s
(sa e y, wea-
he p o ec ion,
ene gy e iciency,
en i onmen al
impac , e c.) (CPR
305/2011)
Ene ge ic da a
(e.g. PV ene gy po-
en ial in e e ence
loca ion)
G aphical analy-
sis o echnical
de ails o he in-
eg a ed solu ion
wi h analysis o all
he main nodes
and join s, and he
iden i ica ion o
in e e ences, bes
p ac ice solu ions
BIPV special s an-
da ds
En i onmen al e-
a u es o p oduc s
(e.g. embodied
ene gy, ecyclabi-
li y, e c.)
Indica ions on bu-
ilding ins alla ion
s ages/p ocedu es
(e.g. ins alla ion
guide)
P oduc and powe
wa an y
Indica ion o main-
enance s a e-
gies du ing he
li e-cycle (e.g. use
and main enance
bookle )
Ce i ica ions, de-
cla a ion o pe o -
mances, labels
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Volume 0
83
CONCLUSIONS
Despi e he ac ha BIPV is al eady an acknow-
ledged and a i med sec o whe e a lo o opics
ha e been in es iga ed o a e unde examina-
ion, i is s ill a niche ma ke and ese ed mainly
o a es ic ed g oup o expe , wi h s ill a low
awa eness wi hin he majo i y o he building and
cons uc ion s akeholde s. Goal o his pape ,
s a ing om he examina ion o he p oduc s’
ma ke , is o p opose a building-based app oach
o disclose inno a i e pe spec i es o BIPV sy-
s ems, wi h a speci ic ocus on in o ma ion ega -
ding manu ac u e s and sys em p o ide s. Based
on a la ge da abase o BIPV p oduc s, collec ed
by he au ho s h ough many yea s o ac i i ies
and lis ed on he web-si e www.bip .ch, i has
been p o en ha he cu en s a e o in o ma ion
and documen a ion is no ye adequa e. In he
PV sec o in o ma ion is mainly p o ided by da a-
shee s ha , when e e ing o BiPV p oduc s, a e
no su icien o in o ming he s akeholde s on
he building pe o mance, po en ials and limi s
o he p oduc i compa ed wi h con en ional o
al e na i e building ma e ials o sys ems.
The e o e he main aspec s ha should be a ai-
lable o planne s, a chi ec s and/o owne s o a
BiPV p ojec , ha e been iden i ied, also p esen-
ing some possible sugges ions o o e coming
he ac ual lack o in o ma ion.
In 2016 he new in e na ional s anda d o BIPV
ini ia ed by CENELEC TC82 (Fp EN50583: Pho-
o ol aics in building) will come in o ce, o icially
in oducing he p ocedu es o BIPV p oduc s o
ha e a CE-ma king acco ding o he Cons uc
P oduc Regula ion. In his di ec ion some o he
mos impo an indus ies manu ac u ing BIPV
glasses, hanks o he combina ion o ex ensi-
e glass know-how wi h PV echnology, al eady
de elop and es hei p oduc s acco ding o
CE-ma king o lamina ed sa e y glasses beyond
he no mal elec o- echnical unc ion o PV mo-
dules.
The e o e he need o comply wi h building e-
qui emen s will become compulso y e y soon
o BIPV so ha a p ope building-based app oa-
ch will gain impo ance mo e and mo e.
In his amewo k he pape aims o con ibu e
owa ds an in e disciplina y e o o connec
PV and building sec o , so a es ic ed in de-
coupled p ocess chains ha ha e esul ed om
yea s o specializa ion and di e si ica ion in he
espec i e ields.
Thanks o his in eg a ed app oach -b idging
a chi ec u e, building echnology and ene gy
knowledge- he esea ch is expec ed o p o ide
he undamen als o a new me hodological pa h
common o he a chi ec u e/building enginee-
ing ield and he PV sec o . P ac ical esul s a e
expec ed o c ea e a posi i e impac in he eal
alue-chain as well as ealis ic oppo uni ies o
s a ing up new and conc e e ways o collabo a-
ion be ween esea ch and indus y.
84
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DIRECTIVE 2010/31/EU OF THE EUROPEAN PARLIAMENT AND
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TXT/?u i=CELEX:32010L0031)
DIRECTIVE 2012/27/EU OF THE EUROPEAN PARLIAMENT AND OF
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Di ec i es 2009/125/EC and 2010/30/EU and epealing Di ec i es
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(h p://eu -lex.eu opa.eu/legal-con en /EN/TXT/?qid=1399375464
230&u i=CELEX:32012L0027)
UNI 8290–1: 1981, Residen ial building. Building elemen s.
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