A manufacturing plant produces an efluent as a waste product. As part of a waste heatrecovery system, they want to use this for internal heating and cooling. The effluent isflown through a system where its temperature remains at 303.15 K. A 0.06-m diameterpipe carrying hot water and 0.04-m diameter pipe carrying cold air is passed throughthis effluent chamber. It can be assumed that the surface temperature of these air andwater pipes are same as the effluent temperature. Water comes in at 328.15 K and exitsat 308.15 K. The air comes in at 268.15 K and exits at 298.15 K. The mass flow rate ofwater and air is respectively, 1 kg/s and 0.01 kg/s. Determine the length of the water andair pipes in the system. Convert all calculations to C.

Firstly, convert all temperatures in oC The temperature of the system, The temperature of water at…

Answered: A manufacturing plant produces an…

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

The sensible heat-transfer coefficient for a dry surface has been determined to be 50 W/(m2-C) at a certain Reynolds number. Estimate the total heat transfer to the surface per unit area at a location where the wall temperature is 10 C and the state of the moist air flowing over the surface is given by 24 C dry bulb and 18 C wet bulb. Assume that the Reynolds number does not change and the Lewis number is 0.82. Assume that the condensate present on the surface will increase the transfer coefficients by about 15 percent.
A- Cylinder has a 0.1m in length and 0.1min diameter, is initially at 292 K. It is suspended in a steam environment where water vapor at 373 K condenses on all surfaces with an effective film coefficient, h, of 8500W/m2 K. Determine the time required for the center of this stubby cylinder to reach 310 K. If the cylinder were sufficiently long so that it could be considered infinite, how long would it take? (4 Marks)
Only handwritten or I'll dislike sure handwritten
Air is to be heated by passing it across the tubes of an in-line tube bundle consisting of 8 rows of 25 mm OD tubes in the direction of flow and 10 tubes in each row normal to the flow. Air approaches the tube bank in the normal direction at 30 °C and 1 atm with a mean velocity of 10 m/s. The tube spacing is 37.5 mm in both parallel and normal to the flow. Calculate the heat transfer from the bundle per m of length when the tube surface temperature is 90 °C.
Saturated steam at 1 atm is condensed on the external surface of a copper tube withan outside diameter 16 mm and tube wall of thickness 0.5 mm. The tube is cooledinternally by water with a mass flow rate of 0.06 kg/s, which in turn is raised intemperature from 15 oC to 60 oC as it flows through the tube.Take the heat-transfer coefficient at the condensing side as 10.0 kW/m2K and theisobaric specific heat-capacity of water as 4180 J/kg K.i) Calculate the heat transfer rate to the cooling water. ii)
.All properties should be evaluated at the temperature of the steam.Saturated, pure steam at 65 ºC condenses on the surface of a vertical tube with outersurface diameter 2 cm which is maintained at a uniform temperature of 35 ºC. Determinethe tube length for a condensate flow rate of 5 x 10-3 kg/s.
Industrial pipes For externally insulated pipes, is it necessary to use skids in the region of contact between them and the sleepers?
Water flows at a rate of 0.8 kg /s in a 2.5 -cm diameter tube whose surface is maintained at a constant temperature of 90°C. If water must be heated from 35°C to 40°C, what is the value of the temperature on which you will base the value of the thermal conductivity that will be used to compute for the convection heat transfer coefficient? Express in Celsus.
determine the length of the tube required for fully develop flow when 9.06 kg of waterper minute is passed through a tube of 2 cm, it is found to be heated from 20 degree celsiusto 60 degree celsius, the heating is achieved by considering steam on the surface of the tube andsubsequently the surface temperature of the tube is maintained at 90 degree celsius.
The sensible heat-transfer coefficient for a dry surface has been determined to be 50 W/(m2-C) at a certain Reynolds number. Estimate the total heat transfer to the surface per unit area at a location where the wall temperature is 10 C and the state of the moist air flowing over the surface is given by 24 C dry bulb and 18 C wet bulb. Assume that the Reynolds number does not change and the Lewis number is 0.82. Assume that the condensate present on the surface will increase the transfer coefficients by about 15 percent
Determine the expected Fanning friction factor for water at 28 degrees Celsius flowing through a smooth tube whose ID is 15mm, at a velocity of 0.45 m/s
Q. Increase in film thickness ………………………..convective heat transfer coefficient

SEE MORE QUESTIONS

Recommended textbooks for you

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

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

SEE MORE TEXTBOOKS