Question

ϭϯ E'E,Z//s/>

hŵĂŵďŝĞŶƚĞƚĞƌŵŝĐĂŵĞŶƚĞĐŽŶĨŽƌƚĄǀĞůĠƵŵĂĚĂƐ ĐŽŶĚŝĕƁĞƐƋƵĞĚĞǀĞŵƐĞƌĐŽŶƐŝĚĞƌĂĚĂƐĞŵƉƌŽũĞƚŽƐ ĚĞĞĚŝĮĐĂĕƁĞƐ͘ĮŵĚĞƉƌŽũĞƚĂƌƵŵĂŵďŝĞŶƚĞŝŶƚĞƌŶŽ ĐŽŵ ƚĞŵƉĞƌĂƚƵƌĂ ĚĞ ϮϬΣ ƉĂƌĂ ƵŵĂ ƚĞŵƉĞƌĂƚƵƌĂ ĞǆƚĞƌŶĂŵĠĚŝĂĚĞϯϱΣ͕ƵŵĞŶŐĞŶŚĞŝƌŽĐŽŶƐŝĚĞƌŽƵ͕ ŶŽ ĚŝŵĞŶƐŝŽŶĂŵĞŶƚŽ͕Ƶŵ ŇƵǆŽ ĚĞĐĂůŽƌ ĂƚƌĂǀĠƐĚĞ ƵŵĂƉĂƌĞĚĞĞǆƚĞƌŶĂĚĞϭϬϱtͬŵϸ͕ĐŽŶĨŽƌŵĞŝůƵƐƚƌĂ ĂĮŐƵƌĂĂďĂŝǆŽ͘ T = 20°C int 105 W/m2 T = 35°C ext 20 cm ƚĂďĞůĂĂƐĞŐƵŝƌĂƉƌĞƐĞŶƚĂŽƐǀĂůŽƌĞƐĚĂĐŽŶĚƵƟǀŝĚĂĚĞ ƚĠƌŵŝĐĂƉĂƌĂĂůŐƵŶƐŵĂƚĞƌŝĂŝƐĚĞĐŽŶƐƚƌƵĕĆŽ͘ ŽŶĚƵƟǀŝĚĂĚĞ Material térmica O (W.m11.K11) ŽŶĐƌĞƚŽ ϭ͕ϰϬ WĞĚƌĂŶĂƚƵƌĂů ϭ͕ϬϬ WůĂĐĂĚĞĂŐůŽŵĞƌĂĚŽĚĞĮďƌĂƐĚĞŵĂĚĞŝƌĂ Ϭ͕ϮϬ WůĂĐĂĚĞŵĂĚĞŝƌĂƉƌĞŶƐĂĚĂ Ϭ͕ϭϬ WůĂĐĂĐŽŵĞƐƉƵŵĂƌşŐŝĚĂĚĞƉŽůŝƵƌĞƚĂŶŽ Ϭ͕Ϭϯ ^^K/KZ^/>/ZEKZD^dE/^͘EZϭϱϮϮϬͲϭ͗ ĞƐĞŵƉĞŶŚŽƚĠƌŵŝĐŽĚĞĞĚŝĨŝĐĂĕƁĞƐͲWĂƌƚĞϭ͗ĞĨŝŶŝĕƁĞƐ͕ ƐşŵďŽůŽƐĞƵŶŝĚĂĚĞƐ͘ZŝŽĚĞ:ĂŶĞŝƌŽ͕ϮϬϬϱ͕Ɖ͘ϴ;ĂĚĂƉƚĂĚŽͿ͘ Įŵ ĚĞ ƐĞ ŽďƚĞƌ Ă ƚĞŵƉĞƌĂƚƵƌĂ ŝŶƚĞƌŶĂ ĚĞƐĞũĂĚĂ͕ ƋƵĂů ĚĞǀĞ ƐĞƌ Ž ŵĂƚĞƌŝĂů ƐĞůĞĐŝŽŶĂĚŽ͕ ĞŶƚƌĞ ŽƐ ĂƉƌĞƐĞŶƚĂĚŽƐŶĂƚĂďĞůĂĂĐŝŵĂ͕ƉĂƌĂĐŽŵƉŽƐŝĕĆŽĚĂ ƉĂƌĞĚĞĞǆƚĞƌŶĂ͍

Accepted Answer

A) ŽŶĐƌĞƚŽ͘

Answer

B) WĞĚƌĂŶĂƚƵƌĂů͘

Answer

C) WůĂĐĂĚĞŵĂĚĞŝƌĂƉƌĞŶƐĂĚĂ͘

Answer

D) WůĂĐĂĐŽŵĞƐƉƵŵĂƌşŐŝĚĂĚĞƉŽůŝƵƌĞƚĂŶŽ͘

Answer

E) WůĂĐĂĚĞĂŐůŽŵĞƌĂĚŽĚĞĮďƌĂƐĚĞŵĂĚĞŝƌĂ͘

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