### Required InformationSometimes equations can be developed and practical problems solved by knowing nothing more than the dimensions of the key parameters. For example, consider the heat loss through a window in a building. Window efficiency is rated in terms of \( R \) value, which has the unit of \( \text{ft}^2 \cdot \text{hr} \cdot °F / \text{Btu} \). A certain manufacturer offers a double-pane window with \( R = 2.5 \) and also a triple-pane window with \( R = 3.4 \). Both windows are \( 3.5 \, \text{ft} \times 5 \, \text{ft} \). On a given winter day, the temperature difference between the inside and outside is \( 45°F \).### ProblemHow much heat is lost through the triple-pane window?**Solution:**231.61 Btu

Given data:- The double pane window with Rdouble=2.5. The triple-pane window with Rtriple=3.4. The…

Required Sometimes equations can be developed and practical problems solved by knowing nothing more than the dimensions of the key parameters. For example, consider the heat loss through a window in a building. Window efficiency is rated in terms of R value, which has the unit of ft2-hr-°F/Btu. A certain manufacturer offers a double-pane window with R=2.5 and also a triple-pane window with R= 3.4. Both windows are 3.5 ft by 5 ft. On a given winter day, the temperature difference between the inside and outside is 45°F. How much heat is lost through the triple-pane window?

Required Sometimes equations can be developed and practical problems solved by knowing nothing more than the dimensions of the key parameters. For example, consider the heat loss through a window in a building. Window efficiency is rated in terms of R value, which has the unit of ft2-hr-°F/Btu. A certain manufacturer offers a double-pane window with R=2.5 and also a triple-pane window with R= 3.4. Both windows are 3.5 ft by 5 ft. On a given winter day, the temperature difference between the inside and outside is 45°F. How much heat is lost through the triple-pane window?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Temperature as a Fundamental Dimension

There are certain rules to write dimensions of a physical quantity using the fundamental dimensions. They are outlined below.

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### Required Information

Sometimes equations can be developed and practical problems solved by knowing nothing more than the dimensions of the key parameters. For example, consider the heat loss through a window in a building. Window efficiency is rated in terms of \( R \) value, which has the unit of \( \text{ft}^2 \cdot \text{hr} \cdot °F / \text{Btu} \). A certain manufacturer offers a double-pane window with \( R = 2.5 \) and also a triple-pane window with \( R = 3.4 \). Both windows are \( 3.5 \, \text{ft} \times 5 \, \text{ft} \). On a given winter day, the temperature difference between the inside and outside is \( 45°F \).

### Problem
How much heat is lost through the triple-pane window?

**Solution:**
231.61 Btu

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! Required information Sometimes equations can be developed and practical problems solved by knowing nothing more than the dimensions of the key parameters. For example, consider the heat loss through a window in a building. Window efficiency is rated in terms of R value, which has the unit of ft2-hr-°F/Btu. A certain manufacturer offers a double-pane window with R=2.5 and also a triple-pane window with R= 3.4. Both windows are 3.5 ft by 5 ft. On a given winter day, the temperature difference between the inside and outside is 45°F. How much heat is lost through the double-pane window? Btu
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