Engineering, 05.05.2020 04:42, biancaadenisee2
A defrost heater is integrated with the sun roof glass in order to prevent ice from forming. The sun roof begins at L1 = 0.3 m from the front of the roof and extends to L2 = 0.6 m. The roof is W = 1.2 m wide. The car is driving at u[infinity] = 10 m/s through air at T[infinity] = -15°C. Assume that the properties of the air are conductivity k = 0.023 W/m-K, density = 1.3 kg/m3 , viscosity = 1.65x10-5 Pa-s, and specific heat capacity c = 1003 J/kg-K. The defrost heater is a thin sheet of electrically resistive material that covers the entire sun roof and transfers a uniform heat flux to the glass. The convection coefficient between the interior surface of the roof and the cabin air is sufficiently low that convection heat transfer with the interior can be neglected. Assume that the flow over the roof remains laminar. Do not use a correlation to solve this problem; instead, use your conceptual knowledge of boundary layer behavior to estimate the answers
Answers: 1
Engineering, 04.07.2019 18:20, safiyabrowne7594
Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?
Answers: 3
A defrost heater is integrated with the sun roof glass in order to prevent ice from forming. The sun...
Social Studies, 03.08.2019 19:00