A moist cement omnes diameter 10 ohm circular cross-section will be dried using air in a tray and, for example, the variation of moisture content over time will be examined. The heat transfer coefficient was calculated as 0.68 cal/min.cm³.C in the fixed still drying arab. Dry and wet chamber temperatures of the air used for drying are 35 and 20°C, respectively. For example, calculate the mass transfer coefficient during the 10-minute constant speed drying interval. (Note: the humidity of the air (Ha) should be calculated with the humidity diagram.)

A moist cement omnes diameter 10 ohm circular cross-section will be dried using air in a tray and, for example, the variation of moisture content over time will be examined. The heat transfer coefficient was calculated as 0.68 cal/min.cm³.C in the fixed still drying arab. Dry and wet chamber temperatures of the air used for drying are 35 and 20°C, respectively. For example, calculate the mass transfer coefficient during the 10-minute constant speed drying interval. (Note: the humidity of the air (Ha) should be calculated with the humidity diagram.)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

a cylindrical can of bean puree, has a diameter of 70 mm and height of 126 mm, and is initially at a uniform temperature of 25 ° C. The cans are stacked vertically inside a retort into which steam is introduced at 120 ° C. Calculate the temperature in the center of the can after a heating time of 0.55 h at 120 ° C. Now suppose the can is in the center of a vertical stack, insulated at its two ends by the presence of the remaining cans. (The heat capacity of the metal wall of the can can be neglected.) The heat transfer coefficient of steam is estimated to be 4640 W / m2 ° K. The physical properties of the bean are k = 0.750 W / m ° K and the thermal diffusivity = 2.007 x 10-7 m2 / s.a) Calculate the temperature in the center of the product.
Calculate the heat transfer coefficient for forced convection local boiling of water in a vertical pipe at 8 atmospheres pressure, 12°C surface superheat.
How does an increase in gas temperature affect pressure drop in a haghouse, assuming the mass flow rate of particles and the molar flow rate of gas are constant?
You have a 2 mm thick layer of water on the floor of a room. The water vaporizes and diffuses through a stagnant film of air, estimated to be 2.5 mm thick, on the surface of the water. Under the evaporation condition, consider as an approximation that the temperature of the water is essentially equal to its dry bulb temperature, 28 ° C. Calculate the time required for the water layer to completely disappear, for thecase the floor is porous and the water also penetrates the floor at a constant rate of 0.1kg / (m2.h).Calculate the vapor pressure of water using the Antoine equation below. The diffusivity of water vapor in air is 0.2201 cm2 / s at 1 atm and 0 ° C. The vapor pressure, P ° (in bar), of the water is given by: ln (P °) = 13.8573 - 5160.2 / T, where T is the temperature in K.
9. What is diffusion and convection? Provide an example for each!
A boiler may have waste gases leaving the installation when artificial draught is used at 450 K . The natural draught chimney is of 50 m height. The hot gases within chimney are at temperature of 600 K and air requirement is 15 kg per kg of fuel burnt. The atmospheric air is at 27 C temperature and mean specific heat of hot gases is 1.0032 kJ/kg.K. The calorific value of fuel burnt is 32604 kJ/kg. Determine (a) the efficiency of chimney, (b) the extra heat carried away by flue gases per kg of fuel.
I need the answer as soon as possible
The heat diffusion equation for one-dimensional heat flow in a solid is: 2 (1²³) + 4 = *²₂² k Pcp ƏT dt əx dx Terms I, II, and III are related to 1: heat conduction, II: energy storage, III: energy generation. 1: energy generation, II: heat conduction, III: energy storage. OI: heat conduction, II: energy generation, III: energy storage. I: energy storage, II: energy generation, III: heat conduction.
I need the answer as soon as possible
Question 6: (Two parts a and b): a. In your own words, why does the concept of average heat transfer coefficient was introduced? b. In your howe work from chapter 6, (1/L) was not part of the integration (as you see attached below). This is the correct approach. But, can you explain why? ANALYSIS: The average convection coefficient is L. dx %3D L'o