Engineering, 31.05.2020 00:58 arturo200

Considere uma estufa usada em um laboratório qualquer. A câmara tem formado de um cubo perfeito com lado igual a 75 cm, desse modo deseja-se saber qual a espessura mínima requerida do isolante térmico de espuma de poliestireno (K = 0,025 W / m . K) que deve ser usado na estufa, para garantir que a taxa que entra nele seja inferior a 900 W.
Considere que suas temperaturas são: superfície interna 105 °C e externa 28°C.

Answers: 3

Show answers

Other questions on the subject: Engineering

Engineering, 03.07.2019 23:20, abbz13

Two technicians are discussing the intake air temperature (iat) sensor. technician a says that the computer uses the iat sensor as a backup to the engine coolant temperature (ect) sensor. technician b says that the powertrain control module (pcm) will subtract the calculated amount of fuel if the air measures hot. who is correct

Answers: 3

continue

Engineering, 04.07.2019 18:10, DestyHilBan1183

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.

Answers: 3

continue

Engineering, 04.07.2019 19:10, moneyyfletcher

The air in an automobile tire with a volume of 0.015 m3 is at 32°c and 140 kpa gage. determine the amount of air that must be added to raise the pressure to the recommended value of 206 kpa gage. assume the atmospheric pressure to be 128 kpa and the temperature and the volume to remain constant.[r-0.287 kj/kgk]

Answers: 3

continue

Engineering, 04.07.2019 19:20, nikkiebartels

Afan that can provide air speeds up to 60 m/s is to be used in a low-speed wind tunnel with atmospheric air at 35 c. if one wishes to use the wind tunnel to study flat-plate boundary layer behavior up to reynolds numbes of re 10, what is the minimum plate length that should be used? at what distance from the leading edge would transition occur if the critical reynolds nurnber were rer, e = 5 × 105?

Answers: 2

continue

You know the right answer?

Considere uma estufa usada em um laboratório qualquer. A câmara tem formado de um cubo perfeito com...