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Esta parede \u00e9 revestida externamente com uma camada isolante de K= 0,007 W\/m.k. A superf\u00edcie interna est\u00e1 a 980\u00b0C e a externa a 38\u00b0C. Resolva:<br \/>\na) represente um desenho esquem\u00e1tico com todo o processo e o circuito de resist\u00eancias t\u00e9rmicas.<br \/><br \/>\nb) a espessura do isolante que permite um fluxo de 900W\/m2.<br \/><br \/>\nc) a temperatura da jun\u00e7\u00e3o da parede com o isolante.<br \/><br \/>","subject_id":2,"grade_id":5,"user_id":5363724,"created":"2018-12-13T13:40:21-02:00","created_timestamp":1544715621,"responses":[],"can_comment":true,"attachments":[],"is_deleted":false,"comments":{"items":[],"lastId":0,"count":0},"canMarkAbuse":false,"isMarkedAbuse":false,"canFollow":false,"canUnfollow":false,"isFollowing":true,"pointsForResponse":null,"pointsForBest":null,"approvedAnswersCount":0,"isAnswerButton":false,"canEdit":true}" data-user="{"id":5363724,"nick":"amandasantosp11","gender":1,"avatars":{"64":"https:\/\/pt-static.z-dn.net\/files\/d39\/83d3b8aea79e9992c5441394b37d999a.jpg","100":"https:\/\/pt-static.z-dn.net\/files\/d00\/41c080547e6af0c9635c21c9885e1165.jpg"},"ranks":{"color":"#6ed6a0","names":["Ambicioso"]}}" data-main-task-id="20178663" data-question-id="20178663" style="box-sizing: border-box; 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margin-bottom: 0.75rem;"><div class="sg-content-box__content" style="box-sizing: border-box; overflow-wrap: break-word;"><h1 class="sg-text sg-text--large sg-text--regular js-question-heading" itemprop="text" style="box-sizing: border-box; font-size: 24px; margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 32px; font-weight: 400;">Uma fornalha industrial tem parede de tijolo com 0.2m de espessura e k= 1,0 W/m.K. Esta parede é revestida externamente com uma camada isolante de K= 0,007 W/m.k. A superfície interna está a 980°C e a externa a 38°C. Resolva:<br style="box-sizing: border-box;">a) represente um desenho esquemático com todo o processo e o circuito de resistências térmicas.<br style="box-sizing: border-box;"><br style="box-sizing: border-box;">b) a espessura do isolante que permite um fluxo de 900W/m2.<br style="box-sizing: border-box;"><br style="box-sizing: border-box;">c) a temperatura da junção da parede com o isolante.<br style="box-sizing: border-box;"></h1></div></div></article></div></div></section></div>
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