Question: Evaluate the dimensionless groups hcD/k, U?? D/, cp /k for water, n-Butyl alcohol, mercury, hydrogen, air, and saturated steam at a temperature of 100?C. Let

Evaluate the dimensionless groups hcD/k, U?? Dρ/μ, cp μ/k for water, n-Butyl alcohol, mercury, hydrogen, air, and saturated steam at a temperature of 100?C. Let D = 1m, U?? = 1 m/sec, and hc = 1W/(m2 K).GIVEND = 1 mU?? = 1 m/shc = 1 W/(m2 K)From Appendix 2, at100?C

Substance Table Density, p Specific Heat, Thermal Absolute Number (kg/m) c, ((J/kg K)) Conductivity Viscosity (W/(m K)) Hx 10 (N s'm) Water 13 958,4 277.5 4211 0.682 n-Butyl Alcohol 18 3241 0.163 540 753 Mercury 25 13,385 137.3 10.51 1242 Hydrogen 14,463 10.37 31 0,0661 0.217 Air 0.916 0.0307 21.673 27 1022 0.5977 2034 Saturated Steam 34 0.0249 12.10

Step by Step Solution

★★★★★

3.42 Rating (152 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

For water at 100C The dimensionaless g... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

66-E-M-E-H-M-T (1620).docx

120 KBs Word File

Students Have Also Explored These Related Mechanical Engineering Questions!

A house is maintained at a temperature of 20oC by a heat pump pumping heat from the atmosphere. Heat transfer rate through the wall and roof is estimated at 0.6 kW per unit temperature difference...

A large body of nonluminous gas at a temperature of 1100?C has emission bands between 2.5 and 3.5 mm and between 5 and 8 mm. At 1100?C, the effective emittance in the first band is 0.8 and in the...

A house is maintained at a temperature of 25oC by a reversible heat pump powered by an electric motor. The outside air at 10oC is used as the low-temperature TER. Determine the percent saving in...

5 . 5 Evaluate the dimensionless groups ? b a r ( h ) c D k , U D , and c p k for water, n - butyl alcohol, mercury, hydro - gen, air, and saturated steam at a temperature of 1 0 0 C . Let D = 1 m ,...

A large, hot plate hangs vertically in a room. Heat transfer from the plate to the air near it causes the air density to decrease. This lighter air rises upward with a velocity proportional to the...

Suppose that a sphere of diameter D moves at a velocity U relative to a liquid, and that the sphere temperature T S exceeds the liquid temperature T L far from the sphere. The rate of heat transfer...

Quickly please Question 3 (18 marks) The following equations describe a dynamic model for adsorptive reactors. The component material balances for the packed adsorptive reactor can be described 2C ac...

Dimensionless groups: Buckingham n theorem In heat transfer by forced flow of fluid over a tube surface. the parameters which are physically important in determining the fuid - side heat - transfer...

Question 2 Determine the dimensionless groups to be formed from the variables involved in the flow over a heated body with a cooling air flow ( i . e . Forced Convection ) if there is a fixed...

Q3 (20 points) An incompressible Newtonian fluid flows steadily by the effect of gravity over a hot cylinder. The cylinder is maintained at a temperature To while the fluid temperature far away from...

Water from the combustion of hydrogen and pure oxygen is at 3800 K and 50 kPa. Assume we only have H2O, O2, OH and H2 as gases with the two simple water dissociation reactions active find the...

What type of risk is measured by the standard deviation?

A project has average net income of $ 4 , 9 2 0 per year over its 4 - year life. The initial cost of the project is $ 6 4 , 0 0 0 which will be depreciated using straight - line depreciation to a...

The sales manager for a publisher of college textbooks has six traveling salespeople to assign to three different regions of the country. She has decided that each region should be assigned at least...

Prepare journal entries for a local government to record the following transactions, first for fundbased financial statements and then for government-wide financial statements. a. The government...

A companys statement of cash flows and the accompanying schedule of investing and financing activities not affecting cash may contain the following major sections: A. Net Cash Flow From Operating...

A variety of routine maintenance checks are made on commercial airplanes prior to each takeoff. A particular maintenance check of an airplanes landing gear requires an average of 15 minutes of a...

A study is made by the recording industry in the United States of the number of music CDs owned by 25 senior citizens and 30 young adults. The information is reported below. a. Find the median and...

What is the difference between an allergy and an autoimmune response?

Square plates freshly sprayed with an epoxy paint must be cured at 140C for an extended period of time. The plates are located in a large enclosure and heated by a bank of infrared lamps. The top...

An apparatus commonly used for measuring the reflectivity of materials is shown below. A water-cooled sample, of 30-mm diameter and temperature Ts = 300 K, is mounted flush with the inner surface of...

A very small sample of an opaque surface is initially at 1200 K and has the spectral, hemispherical absorptivity shown. The sample is placed inside a very large enclosure whose walls has an...

Question 1 Although its own operations have shown no growth over the past decade, Hammerworks Inc. has built up a significant cash balance ($2.9 billion) in anticipation of a collapse in equity...

Find the following values. Compounding/discounting occurs annually. Do not round Intermediate calculations. Round your answers to the nearest cent. a. An initial $200 compounded for 10 years at 10%....

DISCUSS QUESTION #4 Apollo Inc paid a dividend last year of $1.50. Dividends are expected to grow at a rate of 17% this year, 15% next year, 10% the following year and 5% thereafter. The required...