\n Met beurtkrag wat al hoe erger word en Suid-Afrikaners se lewe ontwrig, oorweeg al hoe meer huishoudings hul eie kragopwekking.<\/b>\n<\/p>\n
AfriForum het hierdie nuttige gids oor sonkrag saamgestel:<\/p>\n
Die twee basiese maniere waarop \u2019n huishouding sonkrag kan benut, is met fotovolta\u00efese panele wat sonstrale omskakel na \u2019n elektriese stroom, of met termiese sonwaterverwarmers, wat jou huis se water met die hitte van die son verhit eerder as \u2019n elektriese element.<\/p>\n
\u2019n Fotovolta\u00efese sonpaneel van 500 watt (W) in Suid-Afrika, wat behoorlik noord gerig is met geen skaduwee van bome of ander strukture wat daaroor val nie, kan in \u2019n jaar 821 kilowatt-uur (kWh) se elektrisiteit lewer, of gemiddeld 2,25 kWh per dag, volgens die opstellers van die gids. Dit is teoreties, aangesien die son nie heeldag en aldag skyn nie.<\/p>\n
Teoreties kan een paneel teen \u2019n kragprys van R3 per kWh jou \u2019n maksimum van R2 460 per jaar spaar.<\/p>\n
\n Net sonkrag:<\/b> Deur \u2019n stelsel van net sonpanele en \u2019n wisselrigter (of omsetter as vertaling van \u201cinverter\u201d) sonder batterye te installeer wat aan die munisipale netwerk gekoppel is, kan \u2019n huishouding net die elektrisiteit gebruik as die son skyn en oortollige krag kan aan die munisipaliteit gelewer word. Dit help om die kragrekening te verlaag, maar dit help nie gedurende beurtkrag of snags nie. Ook laat nog net Kaapstad en \u2019n paar ander munisipaliteite tans toe dat sonkragstelsels aan hul netwerk gekoppel word en om krag terug te verkoop.<\/p>\n
\n Sonkrag en batterye: <\/b>\u2019n Losstaande stelsel met sonpanele en genoeg batterye kan toesien dat die huis ook snags krag het, maar dan moet daar genoeg sonpanele en groot genoeg batterye wees sodat die batterye genoegsaam herlaai kan word. So \u2019n stelsel kan baie duur wees en maak slegs sin in afgele\u00eb gebiede wat glad nie aan \u2019n kragnetwerk gekoppel is nie.<\/p>\n
\n Sonkrag, batterye en Eskom:<\/b> \u2019n Hibridiese sonkragstelsel met batterye is tans die sinvolste vir \u2019n tipiese voorstedelike huishouding wat aan die munisipale netwerk gekoppel is. Gedurende beurtkrag kan die huis krag uit die batterye put en die batterye kan herlaai word met sonkrag of met munisipale krag, of die stelsel kan aangevul word met \u2019n diesel- of petrol-kragopwekker om die batterye te herlaai en die huis krag te gee wanneer die batterye afgeloop het.<\/p>\nBatterye<\/h1>\n
LiFePO4-li\u00adtium-ioonbatterye word aanbeveel omdat dit vir tien jaar gewaarborg word en \u2019n groter ontlaaivermo\u00eb as loodsuurbatterye het. <\/p>\n
\u2019n LiFePO4-batterybank met naamplaat-lewering van 5 kWh kos sowat R30 000. Dit kan gerieflik 4 kWh lewer as die batterye daagliks tot 80% van hul kapasiteit lewer en dan herlaai word. Handelsname soos Pylontech, Blue Nova en Freedom Won word aanbeveel as di\u00e9 met \u2019n goeie reputasie, lui AfriForum se gids. <\/p>\n
Die geiser kan goed benut word as \u2019n virtuele battery deur oortollige elektrisiteit wat bedags deur die sonpanele opgewek word, na die geiser te voer sodat dit nie vermors word nie. Die geiser kan tot ho\u00eb temperature verhit word en die warm water kan selfs in \u2019n tweede geiser gestoor word. <\/p>\n
As die twee geisers aan mekaar gekoppel is, kan die huishouding saans warm bad en die volgende oggend nog warm stort \u2013 alles danksy die sonkrag van die vorige dag en sonder dat munisipale krag daarvoor gebruik is.<\/p>\n
Sonpanele is beskikbaar tot 600 W per paneel en kos sowat R4 000 per paneel. <\/p>\n
Kies panele van betroubare vervaardigers. Die installeerder of stelselverskaffer sal goeie handelsname kan aanbeveel.<\/p>\n
\u2019n Huis wat 4 kWh vir vier uur se beurtkrag per dag benodig, behoort reg te kom met 5 kW se sonpanele. Dit sal dan bestaan uit agt tot tien panele. <\/p>\n
Dit kan voldoende wees om selfs die swembadpomp, wasmasjien en \u2019n strykyster in die middel van die dag te laat loop, mits die son skyn. Die beste kragproduksie sal tussen 12:00 en 14:00 wees wanneer die son behoorlik en relatief loodreg op die sonpanele skyn.<\/p>\n
Sonpanele word gewoonlik vir 20 jaar gewaarborg, wat impliseer die vervaardigers meen die panele sal vir tot 20 jaar steeds meer as 80% van hul naamplaatwaarde kan produseer.<\/p>\n
\u2019n Kundige installeerder behoort \u2019n ontleding van jou huidige kragverbruik-profiel te kan doen en dan aan te beveel hoe groot jou stelsel moet wees in kombinasie van sonpanele, \u2019n wisselrigter en batterye. Die kragvraag kan ook van die maandelikse kragrekeninge geraam word.<\/p>\n
Maar dis nog beter om eers so doeltreffend moontlik met jou kragverbruik te word deur byvoorbeeld na \u2019n gasoond en \u2019n songeiser of gasgeiser oor te skakel.<\/p>\n
Die minimum vereistes vir huishoudings gedurende beurtkrag is byvoorbeeld die internet, veiligheid, beligting, die TV, motorhuisdeur- en hekmotors en dalk \u2019n mikrogolfoond, en om \u2019n selfoon te herlaai, \u2019n rekenaar te laat werk en die yskas aan die gang te hou. Alles hoef nie gelyk aangeskakel te wees nie, maar die totale kragvraag is gewoonlik nie meer as 1 kW nie. Vir vier uur se beurtkrag per dag beteken dit dus die stelsel moet minstens 4 kWh se krag kan stoor om jou deur te dra wanneer beurtkrag toegepas word. .<\/span> Die opstellers van AfriForum se gids oor sonkrag is prof. Johan Rens en Neill Human. Die volle\u00addige gids, asook \u2019n lys van geakkrediteerde en gekwalifiseerde installeerders\u00ad, is op sy webwerf, afriforum.co.za, beskikbaar.<\/p>\n Kaapstad het pas tariewe bekendgestel wat dit toelaat en al hoe meer munisipaliteite sal waarskynlik die voorbeeld volg. <\/p>\n Maar die prys wat Kaapstad tans aanbied \u2013 net meer as R1 per kWh \u2013 is maar \u2019n derde van die sowat R3 per kWh wat jy sou spaar as jy die krag self kon gebruik pleks van om dit by die munisipaliteit te koop. <\/p>\n Die beste is dus om jou stelsel en kragverbruik so te ontwerp en aan te pas dat jy al die krag wat jy self opwek, ook self gebruik. Dit verbeter die opbrengs op jou belegging.<\/p>\n \n Kragpryse in Suid-Afrika styg met veel meer as die inflasiekoers. As jy eers die kapitaal bestee het, is jy vir minstens 20 jaar verseker van betroubare krag wat jou niks verder kos nie. <\/p>\n Die batterye sal wel dalk n\u00e1 tien jaar vervang moet word.<\/p>\n","protected":false},"excerpt":{"rendered":" Met beurtkrag wat al hoe erger word en Suid-Afrikaners se lewe ontwrig, oorweeg al hoe meer huishoudings hul eie 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die munisipaliteit my oortollige\u00ad krag koop?<\/h1>\n
Is dit die moeite werd?<\/h1>\n