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{"id":288,"date":"2020-11-17T10:06:18","date_gmt":"2020-11-17T10:06:18","guid":{"rendered":"http:\/\/ms.iaca.fr\/?p=288"},"modified":"2020-11-17T10:13:52","modified_gmt":"2020-11-17T10:13:52","slug":"resistance-thermique-dun-mur","status":"publish","type":"post","link":"http:\/\/ms.iaca.fr\/resistance-thermique-dun-mur","title":{"rendered":"** R\u00e9sistance thermique d’un mur"},"content":{"rendered":"\n

a. Un mur comporte trois \u00e9paisseurs de mat\u00e9riaux de r\u00e9sistance thermique R1<\/sub>, R2<\/sub>, et R3<\/sub>. Quelle est la r\u00e9sistance thermique R du mur ? <\/p>\n\n\n\n

b. Un mur comporte de l’int\u00e9rieur vers l’ext\u00e9rieur :
– une paroi de placopl\u00e2tre de 1 cm d’\u00e9paisseur (conductivit\u00e9 thermique \u03bb = 0,46 W\/ (m\u2022K) ) ;
– une couche de laine de verre de 10 cm d’\u00e9paisseur (conductivit\u00e9 thermique \u03bb = 0.041 W\/ (m\u2022K) ) ;
– une paroi on brique de 20 cm d’\u00e9paisseur (Conductivit\u00e9 thermique \u03bb = 0,84 W\/(m. K) ).
Calculer la r\u00e9sistance thermique du mur.<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

a. Un mur comporte trois \u00e9paisseurs de mat\u00e9riaux de r\u00e9sistance thermique R1, R2, et R3. Quelle est la r\u00e9sistance thermique R du mur ? b. Un mur comporte de l’int\u00e9rieur vers l’ext\u00e9rieur : – une paroi de placopl\u00e2tre de 1 cm d’\u00e9paisseur (conductivit\u00e9 thermique \u03bb = 0,46 W\/ (m\u2022K) ) ; – une couche de … <\/p>\n