Solar Roofs kutiwo kutonhora

Ona solar panel pazuva rakajeka uye zhinji yesimba richibva pane ichi ichiita chinhu chisina kukosha. Mabhatiri anoshandura 15 kusvika ku20% yezuva kuita simba remagetsi; 65 kusvika ku70% inochinja kuita tembiricha, iyo inopisa bhatiri uye inoita kuti ive isina simba (IEA SHC Task 60, 2020). A photovoltaic-thermal (PVT) muunganidzi anoisa inotonhora exchanger pamberi pe cell, inotakura iyo inotonhora kunze kwemvura kana mhepo, uye inoshandisa iyo yemvura yakaomeswa, yekugezera nzvimbo kana heat pump.

The honest summary: PVT works, inotengeswa nhasi uye inogona kupa maviri kusvika matatu mayuniti emhepo yese unit yemagetsi kubva pamwechete fence, asi inobhadhara chete apo pane kugadzikana kushandiswa kwe low-temperature heat, uye yakaderera mari yake ichiri yepamusoro kupfuura zvakasiyana panels uye vaunganidzi munzvimbo dzakawanda. Iyi peji inotiudza nei, nehuwandu.

Chii icho

A PVT muunganidzi ndeimwe solar panel uye a solar thermal muunganidzi muimwe frame. Kune matatu marudzi ezvisikwa (IEA SHC Task 60, 2020):

• Uncovered madziva vaunganidzi zvinotaridzika sezvakanaka mapaneli neyakaenzana inotonhora exchanger bonded kumashure. Vachifamba vakachena, izvo zvinofadza macells, uye vanorasikirwa nemhepo nyore. Vave 61% yeakavakirwa PVT thermal simba pasi rese uye zvinonyanya kushandiswa sezvinopisa chikonzero chekupisa pombi.
• Kudyiwa (glassed) vaunganidzi wedzera imwe kadhi rechinomwe chegirazi uye a inodzivirira chigaro chemhepo pamberi pe cell. Vanogona kusvika pa50-60 °C, izvo zvinodiwa nemvura yakachena yemunharaunda, asi chiedza chinobuda muglass chinopisa magetsi uye mabhatiri anopisa zvakanyanya.
• Air collectors blow air behind the panels and use it to warm or ventilate a building. Vachisvika 33% vekuiswa kwePVT.

Kuzvitsaurira uye evacuated-tube magadzirirwo aripo asi mutambo wepamusoro (IEA SHC, Solar Heat Worldwide 2025).

Maitiro ekushanda

The light budget. Pazuva rakajeka pamusoro 1,000 W of sunlight inosvika pamwechete square meter yepaneli kusangana zuva; 800 W ndiro anopfuura typical yakanakisisa maawa. A silicon cell inoshandura chikamu chespectrum inogona kushandisa kuita magetsi. Chimwe chezvinhu izvi chinobuda, chinopinda kana kuti chinoita kuti mvura iite semhepo.

Kupisa kunoita kuti muviri uite zvakaipa. Iyo yekushanda kwemagetsi kwekristaro yesilicon cell inokwira zvakaenzana neyakajairika tembiricha: η_el = η_ref × (1 − β × (T_cell − 25 °C)), apo β ndeye 0.4% pa kelvin (iyo yakadzika huwandu ndeye 0.2 kusvika 0.5%). Mumashoko akapusa: pane imwe yakanyorwa 20% yakasimba pa25 °C inoburitsa pamusoro pe18.4% kana macell ayo achigara pa45 °C, izvo zviri nyore pazuva rakajeka (Skoplaki nePalyvos, 2009).

Kuunganidza tembiricha. Iyo tembiricha iyo muunganidzi anopa inoteverwa neiyo equation mune yekuyedza standard EN ISO 9806: η_th = η_0 − a_1 (T_m − T_a) / G − a_2 (T_m − T_a)² / G. Pano η_0 ndechekuisa kwezuva rinopisa rinova nyore kupisa kana fluid iri pamhepo tembiricha (maererano ne61% ndeye typical yePVT), T_m ndechekuisa kwemvura tembiricha, T_a tembiricha yemhepo, G mwanga wezuva muW per m², uye a_1, a_2 zvinotaura kuti sei tembiricha inobuda nekukurumidza. Mumashoko akajeka: iyo yakasviba iwe uchida mvura, iyo yakanyanya kupisa iwe unounganidza, uye muunganidzi wakavharwa, pasina chivharo cheglass kuti ugare nemhepo, unorasikirwa nekushisa nekukurumidza kupfuura chakavharwa chimwe.

The trade-off. Chiedza chemvura chinobatsira kaviri: macell anofamba akachena uye anogadzira magetsi anopfuura, uye muunganidzi anowana mhepo yakawanda. Mvura yakasviba inokuvadza kaviri. Izvi ndizvo nei PVT uye heat pumps zviri zvakasikwa vaviri: a heat pump anoda chikonzero pa 5 kusvika 20 ° C, chaizvo apo anokuvara PVT muunganidzi ndiyo yakanyanya kugadzikana. Kana chigaro chiri chakanyanya kutonhora kupfuura mhepo, muunganidzi wakasviba anotorawo tembiricha kubva kumhepo, zuva nezuva, izvo zvinomubvumira kuti agadzirise kunze kwechirongwa cheheat pump yekunze kana kuti abhadharisezve nzvimbo yacho. geological heat pump mabwe. The explainer pamusoro inokutendera iwe kuedza izvi.

The ratio. Nekuti zvakawanda zvezuva zvinove tembiricha kupfuura magetsi, “zviuru zviviri kana kupfuura zvesimba remhepo rinogadzirwa kune yega yega yemagetsi simba, zvichienderana ne cell efficiency uye system design” (IEA SHC Task 60, 2020).

Zvirambidzo

Theoretical. Sunlight inoburitsa pakutanga pamusoro pe1 kW pasquare meter pazuva uye, zvakaenzana gore rega rega, 100 kusvika 300 W pa m² zvichienderana nelatitude uye nguva yekunze. Hapana muunganidzi anogona kupa simba rakawanda kupfuura zvinopesana nezvo (kusanganisira mhepo-mubatsiri inotonhora asingazivikanwe muunganidzi anobata mukati paunenge uchifamba chikafu chekunze, izvo ndezvemafuta emagetsi, kwete kupisa kwezuva). Electricity is capped by the cell: about a fifth of the light for commercial silicon. Kupisa kunorambidzwa nenguva yaunoda: pa60 °C, muunganidzi anenge arasikirwa nechikamu chikuru chezvaanowana.

Practical.

• Kupisa kunofanira kuve nekushandisa kwakanaka. Kupisa kuri pasi pechiyero hachisi chaungatengese mu grid sezvinoita magetsi. Pazuva rakajeka mumwedzi waJuly, imba ine yakazara mvura yakasviba haina nzvimbo yekuisa tembiricha yakawanda, saka komputa inomira kuunganidza (“kutonhora”) uye inotonhorera sepaneti yekare. Kuenzanisa tembiricha yepasi nechokwadi chekuda zvinokosha kupfuura chero chinhu chemuunganidzi.
• Temperature zvinodiwa. Pane akawanda mapaneli akavimbiswa kuti akwanise kushanda ne cell temperatures kusvika ku85 °C. A covered muunganidzwa akabva stagnating muzhizha anogona kusangana kuti, iyo makore encapsulant uye solder zvifukidziro.
• Zvimwe zvekutengesa pasi pechidzitiro chimwe chete. PVT inodiwa nemugadziri wemagetsi uye mugadziri wemvura, maviri masimba ezviyero (IEC 61215 ne61730 kune yemagetsi chikamu, EN ISO 9806 kune yethermal chikamu) uye, kusvika parizvino, hapana imwe chete yekuyedza chimiro cheimwe chinhu. Vaongorori veIEA vanonyora mutengo, kuedza uye hunyanzvi hwevagadziri, kwete physics, sezvirango (IEA SHC Task 60 position paper).
• Kukwikwidza kubva cheap panels. Ordinary mapaneli aiva nyore kwazvo kuti fence anogonawo kuchengeta zvakasiyana PV mapaneli uye chidiki solar thermal muunganidzwa, kana PV mapaneli pamwe nemhepo-chigadzirwa heat pump, for less money than a PVT system.

Real michina, yakaenzana

_Projekti	Chii icho	Chii chaive chakaongororwa kana kutaurwa	Musoro
26 mifananidzo michina muIEA SHC Task 60 (Europe uye kunze, 2020)	Hot water, heat pump uye industrial systems, yakaongororwa kwemakore anopfuura maviri	Kuumbwa kwePVT kunopa magetsi anosvika 700 kWh emvura yakachena pazuva, uye kana paine PV pane nzvimbo dzakavhurika, zvinongoda 400 kWh. Electrical performance ratio: 0.66 kune nzvimbo dzakavhurika uye 0.75 kune nzvimbo dzisina kuvhurwa (PV yekunze: 0.7 kusvika 0.85). Heat pump systems using uncovered PVT as their only source reached a seasonal performance factor of about 3 in Switzerland	Schubert and Zenhäusern, 2020
New Town Hall, Freiburg, Germany (2017)	PVT vaunganidzi vemvura yakasviba panet-plus-energy office building	Designed to deliver 22 MWh of heat a year against a hot water demand of 145 MWh. The measured demand was only 24 MWh a year, so the collector field was far too large, ran hotter and delivered less heat per m². Solar fraction 29.6%; electrical output as expected	IEA SHC Task 60, Existing PVT systems
Carrosserie Pfister, Herisau, Switzerland	Uncovered PVT pabhizimisi rekugadzira	106 kWp yemagetsi uye 324 kW yemhepo simba (inofungidzirwa, kwete yakaenzana nesimba rakagadzirwa)	IEA SHC, Solar Heat Worldwide 2025
New sports arena, Austria	1.130 m² yePVT ne80 ground probes uye 540 kW heat pump	Yakagadzirwa kuti ikwanise kusangana nechikumbiro chekupisa che1.4 GWh pagore pasina mafuta ekunze (chifananidzo chekugadzira)	IEA SHC, Solar Heat Worldwide 2025
World market, 2024	46 vagadziri vanozivisa	37.5 MW yemagetsi uye 18.6 MW yekumisikidza mu2024; France (629,136 m²), Germany neNetherlands inotungamira	IEA SHC, Solar Heat Worldwide 2025

Iyo Freiburg nyaya ndeye yakakosha kwazvo dzidzo pane iyi peji: vaunganidzi vakashanda, kufungidzira kwehuwandu hwemvura yakaomeswa iyo imba ichashandisa haisi. Yakaburitswa, yakazvimiririra yakavakirwa data yePVT michina iri isingaperi; mamwe mazita anobva kumapurojekiti ekutanga.

Chii chinodhura

Kusarudza	Kubhadhara pa kWh	Year and source
PVT, zvakakwana-kuumbwa michina mu Task 60 saizi	magetsi pamusoro €0.20; kutonhora pasi €0.10	2020, Schubert and Zenhäusern
PVT, anenge 60 Task saizi	magetsi €0.10 to €0.15; kutonhora €0.25 (yakavharwa) to €0.45 (yakadzimwa)	2020, imwe cheteyo nzvimbo (inoenderana nemari inopihwa pakati pekupisa uye simba)
PVT, yakagadzirwa	magetsi €0.20; kutonhora €0.22	Lämmle (2019), yakanyorwa mune imwecheteyo ripoti
Benchmark: Rooftop solar panels pane imwe imba	about $0.19 central	Fan Wall model
Kutengesa uye nharaunda rooftop solar, United States	$0.09 to $0.20	Gumiguru 2026, Lazard LCOE+ vhezheni 19
Solar thermal Hot Water, Europe	€0.03 (kumadokero) kusvika ku€0.19 (kumabvazuva nekumaodzanyemba) pa kWh yemagetsi	2015, ESTIF, akataura na Schubert uye Zenhäusern
Kupisa kubva kubhoti regasi, EU mhuri	pamusoro € 0.14 per kWh of heat (fuel chete: gasi pa € 0.1228 per kWh, 90% efficient boiler)	yekupedzisira yegore 2025, Eurostat

Chii tafura inoti: the best PVT systems already make heat for less than a gas boiler’s fuel costs in Europe and electricity at about the price of rooftop panels, but the average pilot system does not. The spread is huge because the value of the heat depends entirely on whether it is used. IEA vaongorori vakazvipira kuderedza PVT muunganidzwa mari nefactor 1.5 kusvika 2 kuburikidza nehuwandu uye tekinoroji (Task 60 position paper).

Panogona kukunda, uye apo haigone

I can win:

• Mabhizimisi ane dambudziko rekushandisa magetsi gore rese uye ane chivakwa chakaderera: mabhawa, mahoteli, zvipatara, nzvimbo dzekusvibisa, dzimba dzemitambo. Nekuti panzvimbo imwe chete pane zviuru zviviri zvevanhu.
• Sezvo inotonhora chigadzirwa chekupisa. Uncovered PVT inogona kuchinja inononoka kunze unit kana recharge a borehole nzvimbo saka haasi kutonhora pasi pamusoro pemakore, iyo ndiyo uko kuwedzera kwezvinoitika kwasvika kubva.
• Warm, sunny nzvimbo nemvura yakachena zvinodiwa, apo akasungirwa vaunganidzi anogona kusangana zvikuru; Task 60 system yasvika 70% solar chikamu.
• Low-temperture industrial heat (kunwa, kutonhora, preheating), uko kune kushandiswa kwese kwegore.

I can’t win:

• Pane tembiricha haina munhu. A chitima, kambani nemvura yacho yakaoma, kana imba yakati yaiswa neheat pump ine yayo pachayo kunze unit inogona kunge iri zvakanaka kuchengetwa nevanhu paneles.
• Pazviyero zvakakwira. Vapori uye tembiricha yekugadzirisa pamusoro pe80 °C inopfuura izvo PV cells zvinogona kutonhora; kuunganidza kwezuva kana thermal storage kunokwana zvakanaka.
• Pamutengo chete pamusoro cheap panels, kusvika kuiswa ichava sezvakajairika sezvinoita PV.

Chii chinoratidza, chinofungidzirwa uye chinofungidzira

Proven: tembiricha mhosva yesilicon macells; muunganidzi physics EN ISO 9806; kuti PVT vaongorori kupawo simba uye kupisa muchokwadi zvivakwa, neyakaomeswa mibairo yemaererano 400 kusvika 700 kWh kwemhepo per m² gore; kuti akavhurika PVT anogona kushandiswa sechimwe chikonzero chekupisa pombi nenguva yekushanda factor pamusoro 3 muSwitzerland; kuti oversizing of heat side inoderedza kugadzirwa.

Plausible: kuti huwandu hwekugadzira uye standard kits inogona kudzikisa mari nefactor ye1.5 kusvika 2; kuti PVT plus heat pumps anogona decarbonise rakaomarara guta blocks apo hapana nzvimbo yekunze zvikwata kana boreholes; kuti zvakanaka thermal kusangana pakati cell uye absorber rinowedzerawo mibairo.

Speculative: PVT-yakatungamira usiku-nguva radiative kutonhora pakushandisa scale (yakaratidzwa mutsvakurudzo, ramangwana risingaperi muzvivakwa); kwenguva refu hupenyu hweiyo cell-to-absorber bond kupfuura 25 makore ethermal cycling; Building-integrated PVT facades pamusika wemitengo.

Ongororo dzekutsvaga

• Maitiro ekuti cell-to-absorber bonds uye encapsulants aite sei pasi pezuva nezuva thermal cycling uye summer stagnation? Twenty-five-year field data does not yet exist.
• Chii chinonzi chakakodzera kuparadzana pakati PVT, PV uye borehole urefu muheat pump system, uye nei PVT regeneration chaizvo kusimudzira borehole upenyu?
• Inogona imwe yakabatanidzwa bvunzo standard uye certification kuderedza mutengo uye nguva yekutora PVT zvigadzirwa zvemusika?
• Vagadziri vanofanira sei kunyatsoongorora tembiricha yemvura yakachena kana kuti hot water demand iri munguva ino yakanyanya kusagadzikana, sezvakaratidzwa nenyaya yeFreiburg?
• Mapombi emagetsi ane mutengo wakaderera anogona kusangana neazvino emapurasitiki ekufambisa mhepo uye hupenyu?

Chii chine basa prototype aifanira

Kuti munhu aite chitsva chePVT, chokwadi chinokosha ndechekuti anoongorora simba rezuva, nezvombo zvinomhanya zvakanyatsojeka, kuti aone nguva yakareba sei kuti zuva rinenge rakanaka kana kuti harisi.

Phase	Kushanda	Chii chinoratidza	Ruvara	_Zvinyorwa
0. Desk kudzidza	Heat-kugovera mufananidzo wechigadzirwa, kuenzanisa nedata rakaburitswa nyanzvi, mutengo chiyero	Chii chinonzi PVT?	$5k to $15k	1 kusvika 2 mwedzi
1. Bench uye kunze kwebvunzo yeimwe kolektor	Kuongororwa kwemagetsi emagetsi (I-V curves) uye thermal efficiency pamhando dzakasiyana dzemafuta, zvichitevera nzira dzeEN ISO 9806 neIEC 60891, mulaboratory yakapihwa mvumo kana mune yakasimba yunivhesiti setup	Real η_0, a_1, uye yemagetsi tembiricha penalty	$15k to $40k	3 kusvika 4 months
2. Small system pilot	10 kusvika 20 m² kuchengeta yacho yacho inotonhora madziro kana heat pump, ine mameter emvura yakasviba, emagetsi uye wetter station, kwegore rimwe chete	Zvibereko zvemunguva, stagnation behaviour, reliability	$40k to $100k	12 months
3. Certification	IEC 61215 uye 61730 (electrical chengetedzo uye kugadzikana), Solar Keymark (thermal), Building approvals	Chigadzirwa chinogona kutengeswa uye kuchengetwa nechikwereti	$60k to $150k	9 kusvika 12 months

Phases 0 kusvika 2 mutengo zvakapetwa kaviri $60,000 to $155,000. Izvi ndezvedu zviyero kubva kumhando yelaboratory uye kuongorora mari, kwete quotes.

Tinofanira kuita sei

• Solar thermal engineer neEN ISO 9806 testing experience.
• PV module engineer uyo anonzwisiswa encapsulants, thermal cycling uye IEC 61215.
• Building services (HVAC) engineer kuti uite saizi yemhepo uye batanidza heat pumps nekuchengetedza.
• Monitoring specialist to design calibrated heat and electricity metering.
• Manufacturing partner anogona laminate uye bond heat exchangers pahuwandu.
• Installers uye plumbers vanoda kuedza pamwe chete kuiswa uye kuratidza real nguva yebasa.

Une pfungwa yakanaka?

Ndokusaka iwe uchida kushandisa yakachena, yakachipa nzira yekuzvichengetera kana kuti nzira yakanakisisa yekushandisa mhepo. Vamwe vatungamiri ve Local Solar System Foundation vanogona kunge vane vanhu vanoita kuti vaone kuti pane chikonzero chekusimudzira simba. Kuti iite, pfungwa inofanira kunge iri kushanda, real-life model iyo yakafanana neyakagadzirwa nevanhu uye inogadzira simba uye tembiricha, yakaenzana neimwe nzira, kwete kutaurwa. Ipfungwa dzepapepa dziri kutarisirwawo: kana physics uye mazita ari nyore, tinogona kuzviburitsa pano pawebsite. Kusimudzira mari pasina kushanda kwemufananidzo kunogona kunge kuri nyore, asi hatigone kuvimbisa mari, mari yekudzoka kana kuvhura.

Kuti uwane PVT, mutengo wakaderera wekuongorora unokosha semufananidzo wekushanda. Mumwe muunganidzi uri kunze kwenzvimbo imwecheteyo yepaneli, nemvura iri mukati meiyo inlet uye outlet, tembiricha yemvura, kubuda kwemvura uye simba remagetsi rakawanikwa mumavhiki mashoma ezuva. Izvi zvinoratidza kuti mhepo yakapihwa uye magetsi akapihwa kana kushaya. Kutumira kuburikidza ne contribution form, uye ona sei PVT inoenzaniswa nevamwe mazano pa idea radar.

Zvinyorwa

1. Munyori: Lämmle, M. et al. (2020). Zvikuru pfungwa dzePVT muunganidzwa tekinoroji, application nzvimbo uye misika. IEA SHC Task 60, Report D5.
2. Munyori: Skoplaki, E. and Palyvos, J.A. (2009). Panguva yekuzvimirira kweiyo tembiricha yephotovoltaic module yemagetsi: ongororo yesimba / simba rekuenzanisa. Solar Energy 83(5), 614-624.
3. AEE INTEC uye IEA SHC (2025). Solar Heat Worldwide, 2025 edition, chikamu 5.4, Photovoltaic-thermal systems.
4. IEA PVPS (2025). Snapshot yeGlobal PV Markets 2025.
5. IEA SHC Task 60 (2020). PVT technology position paper.
6. Schubert, M. and Zenhäusern, D. (2020). Kuongororwa kwekuita kwemuenzaniso wePVT systems. IEA SHC Task 60, Report D2.
7. IEA SHC Task 60 (2020). Isina kujairika PVT michina uye mazano, kusanganisira New Town Hall Freiburg bhuku remashoko ( mushure me Réhault et al., 2019).
8. (2017) (PDF). ISO 9806:2017, Solar energy: solar thermal collectors, test methods.
9. Chow, T.T. (2010). Kuongorora kwe photovoltaic / thermal hybrid solar tekinoroji. Applied Energy 87(2), 365-379.
10. Herrando, M., Markides, C.N. and Hellgardt, K. (2014). A UK-based tarisa hybrid PV uye solar-thermal michina yekunze kutonhora uye simba: system performance. Applied Energy 122, 288-309.
11. Lazard (June 2026). Levelized Cost of Energy+, version 19: community and C&I solar $88 to $197 per MWh.
12. Eurostat (2026). Natural gas price statistics: EU imba inosvika €0.1228 per kWh, yekupedzisira hafu yegore ra2025.
13. Local Solar System Foundation (2020, mufananidzo wakagadziridzwa 2026). The Fan Wall: open model, rooftop solar benchmark.