EXERCISE #1A


OBJECTIVES: In this exercise you will learn:

Objective 1) How to operate Energy Scheming.
Look for this symbol when the subject is Energy Scheming


Objective 2) How heat flow through a wall depends upon R-value, delta T, and wall area.
Look for this symbol when the subject is energy


Objective 3) Architecture can express: reduced skin area, insulated walls, and delta T
Look for this symbol when the subject is architecture



PROCEDURES:

1) Download Exercise 1A file to the desktop.

2) Position your browser as a 2" wide strip on the right hand side of the screen.
3) Double click on the Energy Scheming folder.


4) Drag the Exercise 1A file over the Energy Scheming application icon OR open the file from within Energy Scheming to open it

5) The Energy Scheming window should appear on the left and your browser window on the right.





6) You will find a drawing that looks like this.

7) The specifications have been set to:

East wall (click on pict to enlarge)


These wall specs do not represent real walls. Therefore it is possible to have a 3" batt insulation unsupported by rigid materials. Energy Scheming only understands walls in terms of their thermal characteristics, such as R value, and does not understand anything else about their physical character.

North wall



South wall



West wall





8) Take off an area of 200 s.f. for each wall.




9) Calculate. Your graphic report should look like this:

Please answer the following questions.



You may wish to do Energy Scheming runs to answer these questions. If you want to compare graphic reports, print them out by selecting Print Energy Performance Report from file menu and configure the print dialog box to look like this.

Questions with may have more than one correct answer, questions with only have one correct answer.


Username:

10) Why does the west wall gain and lose more heat than the east wall?

A) lowest R value
B) highest R value
C) faces the setting sun
D) faces away from the rising sun

11) Why does the west wall transmit more heat than the north wall between 5-6 pm on a clear March day?

A) the north wall has a higher R value
B) there is more solar radiation falling on the west wall
C) the west wall is larger than the north wall
D) there is more radiation falling on the north wall


12) Which of the following would reduce heat loss and gain in all the walls on a clear March day (24 hrs.)?

A) change the maximum thermostat setting to 80 all day and night
B) decrease the reflectivity of the walls
C) change the east, west, and south walls to face north
D) add 3" of batt insulation


13) Which wall would benefit the least from adding 3" of batt insulation?

A) North
B) South
C) East
D) West

14) In March on a clear day, how big would the east wall be if it had the same heat loss at 6-7 am as the north wall?

A) approx. 1/4 as big
B) approx. 1/2 as big
C) approx. 2x as big
D) approx. 5x as big
E) approx. 7x as big

Comments:

When you finish the questions, press the button below to submit your answers.

The results of your test will be sent to you via e-mail.

IMPORTANT: when you submit the questions for grading, you will be taken to Cooldown #1A. If you are not taken to the cooldown, there may have been an error in the automatic grading -- contact course personnel.


Return to:

Warm Up Introduction
Warm Up #1A: Wall Area
Warm Up #1B: Wall R-Value
Warm Up #1C: Wall delta T
Warm Up #1D: Sample Exercise #1 Questions

Go to: Cool Down #1A

Return to: Topics Page

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