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The minimum fresh air requirement of a residential

Fluid Mechanics | 2nd Edition | ISBN: 9780071284219 | Authors: Yunus A. Cengel, John M. Cimbala ISBN: 9780071284219 39

Solution for problem 11P Chapter 5

Fluid Mechanics | 2nd Edition

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Fluid Mechanics | 2nd Edition | ISBN: 9780071284219 | Authors: Yunus A. Cengel, John M. Cimbala

Fluid Mechanics | 2nd Edition

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Problem 11P

The minimum fresh air requirement of a residential building is specified to be 0.35 air changes per hour IASHRAE, Standard 62, 1989). That is, 35 percent of the entire air contained in a residence should be replaced by 'fresh outdoor air every hour. If the ventilation requirement of a 2.7-m-high, 200-m2 residence is to be met entirely by a fan, determine the flow capacity in L/min of the fan that needs to be installed. Also determine the minimum diameter of the  duct if the average air velocity is not to exceed 5 m/s.

Step-by-Step Solution:

Introduction

The minimum fresh air required for the residential building is 0.35 air changes per hour , means 35 percentage of the entire air in the room should be replaced by fresh air in every hour.

Step 1</p>

The volume of the residential building

V = (2.7 m) (200 m3)

        V = 540 m3

Step 2</p>

        The minimum volume flow rate of fresh air required

        V1 =( volume of the room)(amount of air changes per hour)

        V1 =( 540 m3 )(0.35/h)

        V1 = 189 m3/h  =189000 L/h

        V1 = L/min =3150 L/min

Step 3 of 3

Chapter 5, Problem 11P is Solved
Textbook: Fluid Mechanics
Edition: 2
Author: Yunus A. Cengel, John M. Cimbala
ISBN: 9780071284219

Fluid Mechanics was written by and is associated to the ISBN: 9780071284219. The full step-by-step solution to problem: 11P from chapter: 5 was answered by , our top Engineering and Tech solution expert on 07/03/17, 04:51AM. This full solution covers the following key subjects: air, minimum, requirement, residence, Fresh. This expansive textbook survival guide covers 15 chapters, and 1547 solutions. This textbook survival guide was created for the textbook: Fluid Mechanics, edition: 2. Since the solution to 11P from 5 chapter was answered, more than 261 students have viewed the full step-by-step answer. The answer to “The minimum fresh air requirement of a residential building is specified to be 0.35 air changes per hour IASHRAE, Standard 62, 1989). That is, 35 percent of the entire air contained in a residence should be replaced by 'fresh outdoor air every hour. If the ventilation requirement of a 2.7-m-high, 200-m2 residence is to be met entirely by a fan, determine the flow capacity in L/min of the fan that needs to be installed. Also determine the minimum diameter of the duct if the average air velocity is not to exceed 5 m/s.” is broken down into a number of easy to follow steps, and 93 words.

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