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{"id":291,"date":"2020-11-17T10:22:04","date_gmt":"2020-11-17T10:22:04","guid":{"rendered":"http:\/\/ms.iaca.fr\/?p=291"},"modified":"2020-11-17T10:22:07","modified_gmt":"2020-11-17T10:22:07","slug":"rendement-dun-chauffe-eau-solaire","status":"publish","type":"post","link":"http:\/\/ms.iaca.fr\/rendement-dun-chauffe-eau-solaire","title":{"rendered":"** Rendement d’un chauffe-eau solaire"},"content":{"rendered":"\nLe circuit d’un chauffe-eau solaire est sch\u00e9matis\u00e9 ci-dessous:
a. Identifier le mode de transfert de l’\u00e9nergie du soleil au panneau solaire. <\/p>\n\n\n\n
b. Un essai d’utilisation du chauffe-eau a donn\u00e9 les r\u00e9sultats suivants :
– d\u00e9bit de l’eau circulant dans le capteur D = 20 L\/h ;
– temp\u00e9rature d’entr\u00e9e de l’eau \u03b81<\/sub> = 15\u00b0C ;
– temp\u00e9rature de sortie de l’eau \u03b82<\/sub> = 40 \u00b0C.
Calculer la quantit\u00e9 de chaleur absorb\u00e9e par l’eau circulant dans le capteur pendant une heure.
Exprimer le r\u00e9sultat en kJ el en kWh.
Donn\u00e9e<\/em> : capacit\u00e9 thermique massique de l’eau c = 4,18 J\/(g.\u00b0C)
<\/p>\n\n\n\nc. Calculer la puissance thermique du chauffe-eau lors de l’essai.<\/p>\n\n\n\n
d. La surface du capteur est S = 2m\u00b2 . La puissance solaire disponible pendant l’essai est de 800 W \/ m\u00b2.
D\u00e9finir le rendement du chauffe-eau. Calculer ce rendement.<\/p>\n","protected":false},"excerpt":{"rendered":"
Le circuit d’un chauffe-eau solaire est sch\u00e9matis\u00e9 ci-dessous: a. Identifier le mode de transfert de l’\u00e9nergie du soleil au panneau solaire. b. Un essai d’utilisation du chauffe-eau a donn\u00e9 les r\u00e9sultats suivants : – d\u00e9bit de l’eau circulant dans le capteur D = 20 L\/h ;– temp\u00e9rature d’entr\u00e9e de l’eau \u03b81 = 15\u00b0C ; – … <\/p>\n
Continuer la lecture de « ** Rendement d’un chauffe-eau solaire »<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34],"tags":[],"_links":{"self":[{"href":"http:\/\/ms.iaca.fr\/wp-json\/wp\/v2\/posts\/291"}],"collection":[{"href":"http:\/\/ms.iaca.fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/ms.iaca.fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/ms.iaca.fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/ms.iaca.fr\/wp-json\/wp\/v2\/comments?post=291"}],"version-history":[{"count":1,"href":"http:\/\/ms.iaca.fr\/wp-json\/wp\/v2\/posts\/291\/revisions"}],"predecessor-version":[{"id":299,"href":"http:\/\/ms.iaca.fr\/wp-json\/wp\/v2\/posts\/291\/revisions\/299"}],"wp:attachment":[{"href":"http:\/\/ms.iaca.fr\/wp-json\/wp\/v2\/media?parent=291"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/ms.iaca.fr\/wp-json\/wp\/v2\/categories?post=291"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/ms.iaca.fr\/wp-json\/wp\/v2\/tags?post=291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}