EXERCISE #3A: WINDOWS


OBJECTIVES: In this exercise you will:

Learn about Energy Scheming:

  • enter sun angle dependent shading devices
  • rule of thumb parameter setting

Learn about energy:

  • effect of orientation on solar radiation gain
  • the performance of various shade types
  • effect of window size and placement on ventilation
  • the effect of sun position on radiation gain
  • the effect of night insulation on heat loss

Learn about architectural design implications:

  • the role of shading devices in facade composition (SWL #65, #66, #68)
  • contrasts and similarities in building and glazing orientation (SWL #31, #33, #34, #35)
  • glazing area and facade composition (SWL #41, #58, #60, #63)
  • plan openness and cross ventilation (SWL #32, #63, #64)


PROCEDURE:

1) Download the Exercise 3A file.

2) Resize the Netscape window to a 2" wide narrow strip on the right hand side of the monitor.




3) Open the file Exercise 3A. Your building should look like this.


4) Arrange the Energy Scheming and Netscape windows so you can see them both.



5) Select Takeoff from the View menu, and select all drawings and all takeoffs.




6) Carefully investigate the existing building specs for windows and walls for the North, East, South, and West elevations, and floor and roof under the plan.


7) Choose Graphic report under the view menu and calculate for March clear.

Questions

Please answer the following questions using the graphic report. (More than one answer may be correct.)

Username:

8) The bar graph shows that the building is cross ventilating between 8 am and 7 pm in March. This cross ventilation is incorrect given the building design because:

A) the North and South windows are fixed.
B) the East and West windows are fixed.
C) rooms A and C are separated by an interior wall.
D) the operable area for ventilation is too small.




9) In the Draw layer, erase the interior partition that separates rooms A, E and C. Cooling is needed between 7 am and 7 pm in September. What could be done to improve ventilation cooling?

A) Put operable windows on the south.
B) Increase the allowable interior temperature to 80 F.
C) Rotate the building 90 degrees so the East and West elevations face South and North respectively.
D) Decrease the minimum allowable temperature to 62 F.


10) What shading should be added to the vertical (not the skylight) east facing windows that would make the heat gain about equal to the vertical south facing windows from 8 to 9 am on a clear September day.

A) horizontal overhang (use Energy Scheming 's default settings for shades)
B) vertical fins (use Energy Scheming 's default settings for shades)
C) egg crate (use Energy Scheming 's default settings for shades)
D) none of the above


11) Add a vertical fin shade (use Energy Scheming's default setting) to the vertical (not skylight) windows on the west elevation. How big would the vertical windows on the south elevation have to be in order for the heat gain from the south windows to be about equal to the heat gain from the west windows with vertical fin shading from 4 to 5 pm on a clear September day?







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 #3A. 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 #3 Intro
Warm Up #3A: Orientation
Warm Up #3B: Solar Savings Fraction
Warm Up #3C: Shading
Warm Up #3D: Ventilation

Go to: Cool Down #3A

Return to: Topics Page

 

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