Fundamentals of Heat and Mass Transfer
7th Edition
ISBN: 9780470917855
Author: Bergman, Theodore L./
Publisher: John Wiley & Sons Inc
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 14, Problem 14.8P
Consider air in a closed, cylindrical container with its axis vertical and with opposite ends maintained at different temperatures. Assume that the total pressure of the air is uniform throughout the container.
(a) If the bottom surface is colder than the top surface, what is the nature of conditions within the container? For example, will there be vertical gradients of the species (O2 and N2) concentrations? Is there any motion of the air? Does
(b) What is the nature of conditions within the container if it is inverted (i.e., the warm surface is now at the bottom)’?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
This question is related to heat and mass transfer subject
In a gas, indicate for which calculations of the different thermodynamic functions it is necessary to know the mass of the molecules.
What is the density of ambient air at 15°C and 1 atm?
Chapter 14 Solutions
Fundamentals of Heat and Mass Transfer
Ch. 14 - Assuming air to be composed exclusively O2 and N2...Ch. 14 - Consider an ideal gas mixture of n species. (a)...Ch. 14 - A mixture of CO2 and N2 is in a container at 25C ,...Ch. 14 - A He-Xe mixture containing 0.75 mole fraction of...Ch. 14 - Estimate values of the mass diffusivity for binary...Ch. 14 - Consider air in a closed, cylindrical container...Ch. 14 - An old-fashioned glass apothecary jar contains a...Ch. 14 - Consider the evaporation of liquid A into a column...Ch. 14 - An open pan of diameter 0.2 m and height 80mm...Ch. 14 - A spherical droplet of liquid A and radius...
Ch. 14 - The presence of a small amount of air may cause a...Ch. 14 - A laboratory apparatus to measure the diffusion...Ch. 14 - A thin plastic membrane is used to separate helium...Ch. 14 - Prob. 14.16PCh. 14 - Consider the radial diffusion of a gaseous species...Ch. 14 - Prob. 14.18PCh. 14 - Prob. 14.19PCh. 14 - Prob. 14.20PCh. 14 - Hydrogen at a pressure of 2 atm flows within a...Ch. 14 - Prob. 14.22PCh. 14 - Insulation degrades (experiences an increase in...Ch. 14 - Prob. 14.24PCh. 14 - Helium gas at 25°C and 4 bars is stored in a...Ch. 14 - Prob. 14.26PCh. 14 - An experiment is designed to measure the partition...Ch. 14 - Ultra-pure hydrogen is required in applications...Ch. 14 - Nitric oxide (NO) emissions from automobile...Ch. 14 - Pulverized coal pellets, which may be approximated...Ch. 14 - To enhance the effective surface, and hence the...Ch. 14 - A platinum catalytic reactor in an automobile is...Ch. 14 - A novel process has been proposed to create a...Ch. 14 - Consider a spherical organism of radius r0 within...Ch. 14 - Prob. 14.35PCh. 14 - Consider combustion of hydrogen gas in a mixture...Ch. 14 - Prob. 14.37PCh. 14 - As an employee of the Los Angeles Air Quality...Ch. 14 - Prob. 14.39PCh. 14 - A large sheet of material 4() mm thick contains...Ch. 14 - Prob. 14.41PCh. 14 - Prob. 14.43PCh. 14 - Prob. 14.44PCh. 14 - Prob. 14.46PCh. 14 - If an amount of energy Q0(J/m2) is released...Ch. 14 - The presence of CO2 in solution is essential to...Ch. 14 - Consider a DVD similar to that of Problem 5.99. To...Ch. 14 - Prob. 14.50PCh. 14 - Prob. 14.51PCh. 14 - Prob. 14.52PCh. 14 - Prob. 14.55PCh. 14 - A person applies an insect repellent onto an...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Water at 50°C and 1 atm pressure is heated to 100°C at constant pressure. Using coefficient of volume expansion data, determine the change in the density of water. (Just write the numerical answer. Include - if the answer is negative. No need to put the unit.) Properties of saturated water Volume Specific Thermal Prandti Enthalpy Expansion Number Density P. kgima Conductivity k, Wim - K Dynamic Viscosity H. kgfm -s Heat Saturation of Coefficient G Jkg - K Pr 8, 1/K Liquid Pressure Temp. T. "C Vaporization hng, kkg Pat, kPa Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor 1854 1857 1862 0.561 0.571 0.580 1.792 x 10-3 1.519 x 10-3 0.0176 1.307 x 10-3 1.138 x 10-3 0.0182 1.002 x 10-3 0.973 x 10-5 1.00 -0.068 x 10-3 0.015 x 10 0.733 x 10- 0.138 x 10 3 0.195 x 10 3 4217 0.0171 0.922 x 10 5 0.934 x 10-5 0.946 x 10 0.959 x 10 0.01 0.6113 999.8 999.9 0.8721 1.2276 999.7 0.0048 2501 2490 13.5 0.0068 4205 0.0173 11.2 1.00 10 0.0094 2478 4194 9.45 1.00 0.0128 0.0173 2466 2454 8.09…arrow_forwardA container filled with a sample of an ideal gas at the pressure of 1.5 atm. The gas is compressed isothermally to one-sixth of its original volume. ?What is the new pressure of the gas in kPa 9 0 4 0 400arrow_forwardBriefly discuss the role and purpose of heat and mass transfer in engineering and provide any two examples of heat and mass transfer applications,arrow_forward
- Nusselt number and Sherwood number for a plate surface that undergoes a simultaneous heat and mass transfer processes are obtained as 200 and 180, respectively. What is the ratio of mass diffusivity coefficient to thermal diffusivity coefficient for the physical condition corresponding to these dimensionless numbers? #heatandmasstransferarrow_forwardBriefly discuss the three fundamental mechanisms of heat transfer and two fundamentaln mechanisms of mass transfer, provide illustrations and examples to support your answer.arrow_forwardEXAMPLE 3–3 Volume and Energy Change during Evaporation XAMPLE 3-3 Volume and Energy Change during Evaporation A mass of 200 g of saturated liquid water is completely vaporized at a con- stant pressure of 100 kPa. Determine (a) the volume change and (b) the amount of energy transferred to the water.arrow_forward
- Plot the dew point, specific volume and RH of moist air at a drybulb temperature of 16 deg C and a moisture content of 0.00734kg moisture per kg dry air at atmospheric pressure.arrow_forwardThe temperature and pressure at the surface of Mars during a Martian spring day were determined to be -56 oC and 433 Pa, respectively. (a) Determine the density of the Martian atmosphere for these conditions if the gas constant for the Martian atmosphere is assumed to be equivalent to that of carbon dioxide. (b) Compare the answer from part (a) with the density of the earths atmosphere during a spring day when the temperature is 18 oC and the pressure 101.6 kPa (abs).arrow_forwardBriefly discuss the three fundamental mechanisms of heat transfer and two fundamental mechanisms of mass transfer, provide illustrations and examples to support your answer.arrow_forward
- A vertical plate 30 cm wide by 30 cm is maintained at 98 °C and exposed to saturated steam at 1 atm. Calculate the rate of heat transfer and the total mass of steam condensed per hour.arrow_forwardA vertical plate 30 cm wide by 30 cm is maintained at 98 °C and exposed to saturated steam at 1 atm. Calculate the rate of heat transfer and the total mass of steam condensed per hour. pls do fastarrow_forwardExplain why heat loss from a cooking pan is reduced by fitting it with a lid. The lid prevents hot air from rising, hence reducing heat loss due to convection. It also reduces heat lost by evaporation (if a liquid is present in the pot).arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University Press
Mechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSON
Thermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEY
Mechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage Learning
Engineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY
Elements Of Electromagnetics
Mechanical Engineering
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:9780134319650
Author:Russell C. Hibbeler
Publisher:PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:9781259822674
Author:Yunus A. Cengel Dr., Michael A. Boles
Publisher:McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:9781118170519
Author:Norman S. Nise
Publisher:WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:9781118807330
Author:James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:WILEY
Heat Transfer – Conduction, Convection and Radiation; Author: NG Science;https://www.youtube.com/watch?v=Me60Ti0E_rY;License: Standard youtube license