An adiabatic heat exchanger is used to heat cold water át 8 C entering at a rate of 3 kg/s by hot air at 150 C entering also at rate of 3 kg/s. If the exit temperature of hot air is 30 C, the exit temperature of cold water is which of the following: (use constant specific heats evaluated at 300 K). 128.4 C 28.6 C 31.2 C O 36.9 C

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
icon
Related questions
Question
### Problem Statement on Heat Exchanger

An adiabatic heat exchanger is used to heat cold water at 8°C, entering at a rate of 3 kg/s, by hot air at 150°C, which also enters at a rate of 3 kg/s. If the exit temperature of the hot air is 30°C, determine the exit temperature of the cold water from the following choices. Use constant specific heats evaluated at 300 K.

**Options:**

- 128.4°C
- 28.6°C
- 31.2°C
- 36.9°C
- 149.7°C

### Explanation of Problem:

The problem involves the application of principles of thermodynamics to determine the exit temperature of cold water in an adiabatic heat exchanger setting. Important parameters include:

- Initial temperature of cold water: 8°C
- Rate of cold water flow: 3 kg/s
- Initial temperature of hot air: 150°C
- Rate of hot air flow: 3 kg/s
- Exit temperature of hot air: 30°C

These conditions are to be used to compute the exit temperature of the cold water, given the characteristics of an adiabatic heat exchanger (indicating no heat loss to surroundings). Constant specific heats are considered for calculation, set at 300 K.
Transcribed Image Text:### Problem Statement on Heat Exchanger An adiabatic heat exchanger is used to heat cold water at 8°C, entering at a rate of 3 kg/s, by hot air at 150°C, which also enters at a rate of 3 kg/s. If the exit temperature of the hot air is 30°C, determine the exit temperature of the cold water from the following choices. Use constant specific heats evaluated at 300 K. **Options:** - 128.4°C - 28.6°C - 31.2°C - 36.9°C - 149.7°C ### Explanation of Problem: The problem involves the application of principles of thermodynamics to determine the exit temperature of cold water in an adiabatic heat exchanger setting. Important parameters include: - Initial temperature of cold water: 8°C - Rate of cold water flow: 3 kg/s - Initial temperature of hot air: 150°C - Rate of hot air flow: 3 kg/s - Exit temperature of hot air: 30°C These conditions are to be used to compute the exit temperature of the cold water, given the characteristics of an adiabatic heat exchanger (indicating no heat loss to surroundings). Constant specific heats are considered for calculation, set at 300 K.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Knowledge Booster
Heat Exchangers
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
Recommended textbooks for you
Elements Of Electromagnetics
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Control Systems Engineering
Control Systems Engineering
Mechanical Engineering
ISBN:
9781118170519
Author:
Norman S. Nise
Publisher:
WILEY
Mechanics of Materials (MindTap Course List)
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:
9781337093347
Author:
Barry J. Goodno, James M. Gere
Publisher:
Cengage Learning
Engineering Mechanics: Statics
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:
9781118807330
Author:
James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:
WILEY