{"id":41286,"date":"2020-02-07T09:28:20","date_gmt":"2020-02-07T06:28:20","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/dlya-vyrabotki-elektrichestva-po-nocham-predlozheny-antisolnechnye-batarei"},"modified":"2020-02-07T09:28:20","modified_gmt":"2020-02-07T06:28:20","slug":"dlya-vyrabotki-elektrichestva-po-nocham-predlozheny-antisolnechnye-batarei","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/dlya-vyrabotki-elektrichestva-po-nocham-predlozheny-antisolnechnye-batarei","title":{"rendered":"Per generare elettricit\u00e0 di notte sono state proposte batterie \"anti-sole\".","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Quanto ci piacerebbe passare a fonti di energia rinnovabili, tutte hanno dei difetti. I pannelli solari, ad esempio, funzionano solo durante il giorno. Di notte rimangono inattivi e l'energia \u00e8 prelevata dalle batterie caricate durante il giorno. Questa limitazione pu\u00f2 essere superata grazie ai pannelli termoradiativi ideati dagli scienziati.<\/p>\n

\"Per<\/p>\n

Come suggerisce la risorsa web ExtremeTech<\/a><\/noindex>, i ricercatori dell'Universit\u00e0 della California a Davis hanno proposto il concetto di pannelli «antisolare» che possono generare elettricit\u00e0 sfruttando l'emissione di calore accumulato dai pannelli stessi (radiazione infrarossa). Poich\u00e9 la radiazione infrarossa ha meno energia rispetto a quella visibile, i pannelli «antisolari» produrranno circa il 25 % dell'elettricit\u00e0 rispetto alle capacit\u00e0 di normali pannelli solari della stessa superficie. Ma \u00e8 comunque meglio di niente?<\/p>\n

I pannelli termoradiativi generano elettricit\u00e0 in modo diverso rispetto ai pannelli solari. Nei pannelli convenzionali, la luce visibile sotto forma di fotoni penetra nel semiconduttore della cella fotovoltaica e, interagendo con la materia, produce elettricit\u00e0. trasmette la sua energia<\/a><\/noindex>. Gli elementi termoradiativi proposti dagli scienziati funzionano secondo un principio simile, ma utilizzano l'energia delle radiazioni infrarosse. La fisica \u00e8 la stessa, ma i materiali negli elementi devono essere diversi, come dichiarato dagli scienziati in un articolo pubblicato sulla rivista ACS Photonics<\/a><\/noindex>.<\/p>\n

<\/center><\/p>\n

La questione del funzionamento dell'elemento termoradiativo durante il giorno rimane aperta, anche se \u00e8 possibile creare condizioni per il suo funzionamento anche di giorno. Di notte, l'elemento termoradiativo riscaldato durante il giorno emette attivamente il calore accumulato verso uno spazio aperto pi\u00f9 freddo. Durante il processo di emissione infrarossa, l'energia delle particelle emesse nel materiale dell'elemento termoradiativo viene convertita in energia elettrica. In linea di principio, tale convertitore pu\u00f2 iniziare a funzionare non appena la temperatura ambiente scende al di sotto del suo punto di riscaldamento.<\/p>\n

Attualmente, gli scienziati non sono pronti a presentare un prototipo di elemento termo-radiativo e sono ancora in fase di avvicinamento alla sua creazione. Non ci sono nemmeno dati su quale materiale sar\u00e0 preferibile per la produzione di elementi termo-radiativi. L'articolo discute del possibile utilizzo di leghe di mercurio, il che solleva interrogativi sulla sicurezza. Allo stesso tempo, sarebbe allettante ottenere elementi in grado di generare elettricit\u00e0 non solo di giorno, ma anche di notte.<\/p>\n

<\/p>\n

<\/center><\/p>\n

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\n\t\t\t\t\t\t\t\t<\/center>
Fonte: 3dnews.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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