A thin sheet of naphthalene, 10 cm square is placed parallel to an air stream flowing at a uniform velocity of 5 m/s. The air is at 0°C and 101.3kN/m2 pressure. Assuming that both the large surfaces are flat and exposed to the air at all times and neglecting evaporation from the edges, calculate the rate of sublimation of naphthalene. Under the operating conditions, vapor pressure of naphthalene is 7.86 × 10–4 kN/m2, diffusivity of air-naphthalene is 5.1 x 10-6 m2/s.

Q: 6) Problem 4.7-6 (Page 350): Natural Convection Heat Loss in Double Window. 4.7-6. Natural…

A: Given that T1 =25 CT2 =10 Ch=2 mw=1.2 m Ra

Q: 30°C

A:

Q: For a stream of water (at 32 °C) flowing over a plate at a constant surface temperature of (90 °C)…

A: Given:  T∞ = Twater = 32 oC            Thermal conductivity of water at 32 oC = 0.6 W/m.k…

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A:

Q: 3. A vertical furnace door, 1 m. in height has a surface temperature of 120°C over which air (30°C)…

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Q: Estimate the natural convection heat transfer coefficient of the horizontal pipe. The outer surface…

A:

Q: A petrochemical storage tank is cylindrical in shape with a diameter of 6 m and a height of 10 m.…

A: Calculate the characteristic length of the cylinder as shown below:

Q: After pressure spraying, there is a thin layer of water (at 70°F) left inside of a 24 inch diameter…

A:

Q: A round tube (ID = 60mm, OD = 80mm) carrying liquid ammonia has a constant surface temperature of…

A: Given, Density of air, ρ = 1.225 kg/m3 Inner diameter of the insulation, D = 80 mm +2×8 mm= 96×1…

Q: b) A heated sphere of radius R is placed in a large amount of stagnant fluid. Consider the heat…

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Q: Ex) Air at 0 C and 1 atm flows at a velocity of 6 m/s across a rectangular plate at a uniform…

A:

Q: Define the temperature of liquid nitrogen exposed to the atmosphere remains constant.

A: Liquid Nitrogen - Temperature -195.79 oC( 77K , -320 oF ). This the boiling point of liquid…

Q: Example:. Consider a cylindrical body 30 cm in length and 15 cm in diameter at 327°C suspended in…

A: (a) To determine the rate at which the cylinder emits radiation energy, we can use the…