: +0العنوانuse only5) A 100 kg batch of granular solidscontaining 30% moisture is to be dried ina tray drier to15.5% by passing a current of air at 350K tangentially across its surface at avelocity of 1.8m/s. If the constant rate of drying underthese conditions is 0.7 g/s m2and the critical moisturecontent is 15%, calculate theapproximate drying time. Assume thedrying surface to be 0.03m2/kg dry mass.мони

Answered: : +0 العنوان use only 5) A 100 kg batch…

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.34P

See similar textbooks

Similar questions

Q3/Condensing steam at 1 atm is used to maintain a vertical plate 20 cm high and 3.0 m wide at a constant temperature of 100°C. The plate is exposed to room air at 20°C. What flow rate of air will result from this heating process? What is the total heating supplied to the room air? Ans. 0.0034 kg/s, 278W
i need the answer quickly
From an open water surface with air temperature 22°C, relative humidity is 40% and wind speed is 3 m/s, all measured at height 2 m above the water surface. Assume a roughness height of 0.03 cm. The net radiation is 200 W/m^2. Cp = 1005 J/kg-K A. Calculate the latent heat of vaporization (J/kg) B. Calculate the evaporation using Energy Balance Method (mm/day) C. Calculate the saturation deficit of the vapor pressure (Pa) D. Calculate the evaporation using Priestley-Taylor Method (mm/day)
The defroster of an automobile functions by discharging warm air on the inner surface of the windshield. To prevent condensation of water vapor on the surface, the temperature of the air and the surface convection coefficient (T¡,¡ ) must be large enough to maintain a surface temperature T, that is at least as high as the dewpoint (Ts,i ≥ Tdp). Step 1 00,0¹ kg 8 - 0 Consider a windshield of length L = 800 mm and thickness t = 6 mm and driving conditions for which the vehicle moves at a velocity of V = 70 mph in ambient air at T%0,0 = 0°C. From laboratory experiments performed on a model of the vehicle, the average convection coefficient on the outer surface of the windshield is known to be correlated by an expression of the form 1/3 Nu₁ = 0.037 Re8 Pr¹/³, where Re₁ = VL/v. Air properties may be approximated as k = 0.023 W/m·K, v = 12.5 × 10-6 m²/s, and Pr = 0.71. If Tdp = = 10°C and Ti 50°C, what is the smallest value of the inside convection coefficient required to prevent…
Is latent heat load of infiltration necessarily zero when the humidity ratio (absolute humidity) of the hot outside air in summer is the same as that of inside air? Explain.
Water is to be boiled at atmospheric pressure in a polished copper pan by means of an electric heater. The diameter of the pan is 0.48 m and is kept at 108 deg C. What is the power required to boil the water? Tsat 100°C; Properties of water at 100°C: Density. pl= 961 kg/m3; Kinematic viscosity, v 0.293x10-6 m2/s: Prandti Number. Pr 1.740; Specific heat, Cpl = 4216 J/kg.K; Dynamic viscosity, u = p x v = 961 x 0.293 x 10-6 = 281.57 x10-6 Ns/m2; hfg = 2256.9 k/kg; pv = 0.597 kg/m3; a = 0.0588 N/m; Csf=0.013; n=1:
A chromel–constantan thermocouple measuring the temperature of a fluid is connected by mistake with copper–constantan extension leads (such that the two constantan wires are connected together and the copper extension lead wire is connected to the chromel thermocouple wire). If the fluid temperature was actually 250 C and the junction between the thermocouple and extension leads was at 90 C, what e.m.f. would be measured at the open ends of the extension leads if the reference junction is maintained at 0 C? What fluid temperature would be deduced from this (assuming that the connection error was not known)?
I was given this solution, Please advise on the solution
An 80m deep and 100m wide river flows from the left to the right off the page. An action will release two sources of oil to the river: (1) the indirect runoff of oil accumulated on a bridge that runs off site and crosses over the river and (2) the direct and permitted discharge of water containing oil from the activities onsite (a water pollution control plant) to the river. The oil has a molecular weight of 100 g/mol, it fully dissolves in the river water, and it decays in the river with a rate constant of 0.2 d-1. Estimate the potential impact of this action on the concentration of oil in the river at a location 500m downstream of the WPCP. (1) bridge runoff Q1 = 1 m's C = 1 mol/m (2) WPCP discharge Q2 = 50 m's C2 = 0.01 mol/m Qin = 1000 m³'s Cin = 0.001 mol/m? --500m- 500m- -500m 80m 100m a. Recommend the x, y, and z dimensions of the CV. Justify your recommendations. b. Estimate the oil concentration in the water 500m downstream of the WPCP assuming steady and 1D mixed. c. Sketch…
This is a question from my problem sheet with the answers. i dont understand how to answer this question. Please use this book for the values: Thermodynamic and Transport Properties of Fluids by Rogersand Mayhew.
Question c d and e please
Net radiation at the Laguna Lake is 185 W/m2 at noon on February 14th. Air temperature is 27.5°C, relative humidity is 70%, and wind speed is 1.8 m/s at 2 m. – Determine the open water evaporation rate in mm/d using the combined method

SEE MORE QUESTIONS

Recommended textbooks for you

Principles of Heat Transfer (Activate Learning wi…

Mechanical Engineering

ISBN:

9781305387102

Author:

Kreith, Frank; Manglik, Raj M.

Publisher:

Cengage Learning