Ambient air with a dew point of 1°C and a relative humidity of 60% is conveyed at a rate of 1.5 m3/s through an electric heater. The air is heated to a dry bulb temperature of 50°C. The heated air is then allowed to pass through a tray drier that contains 200 kg of apple slices with an initial moisture content of 80% wet basis. The air exits the dryer with a dew-point temperature of 21.2°C. If the electrical energy costs 5¢/(kW h), calculate the electrical costs for heating the air per hour of operation. {Hint: unit of electrical energy is kW.h, ie. amount of power consumed for 1 hour. To estimate the electrical energy, you calculate the power required in kW and multiply it by the number of hours of operation. Do not do unit conversion of hours into seconds} Calculate the amount of water removed by air from apple slices per hour of operation. If the dryer is operated for 2 h, what will be the final moisture content of the apple slices (wet basis)?
Ambient air with a dew point of 1°C and a relative humidity of 60% is conveyed at a rate of 1.5 m3/s through an electric heater. The air is heated to a dry bulb temperature of 50°C. The heated air is then allowed to pass through a tray drier that contains 200 kg of apple slices with an initial moisture content of 80% wet basis. The air exits the dryer with a dew-point temperature of 21.2°C. If the electrical energy costs 5¢/(kW h), calculate the electrical costs for heating the air per hour of operation. {Hint: unit of electrical energy is kW.h, ie. amount of power consumed for 1 hour. To estimate the electrical energy, you calculate the power required in kW and multiply it by the number of hours of operation. Do not do unit conversion of hours into seconds} Calculate the amount of water removed by air from apple slices per hour of operation. If the dryer is operated for 2 h, what will be the final moisture content of the apple slices (wet basis)?
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
Related questions
Question
Ambient air with a dew point of 1°C and a relative humidity of 60% is conveyed at a rate of 1.5 m3/s through an electric heater. The air is heated to a dry bulb temperature of 50°C. The heated air is then allowed to pass through a tray drier that contains 200 kg of apple slices with an initial moisture content of 80% wet basis. The air exits the dryer with a dew-point temperature of 21.2°C.
If the electrical energy costs 5¢/(kW h), calculate the electrical costs for heating the air per hour of operation. {Hint: unit of electrical energy is kW.h, ie. amount of power consumed for 1 hour. To estimate the electrical energy, you calculate the power required in kW and multiply it by the number of hours of operation. Do not do unit conversion of hours into seconds}
Calculate the amount of water removed by air from apple slices per hour of operation.
If the dryer is operated for 2 h, what will be the final moisture content of the apple slices (wet basis)?
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 3 images
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.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