Passive Solar Designby Software -It is one part of green building design, and does not include active systems such as Mechanical ventilation or Photovoltaic. -Three Passive Solar Principles that follow: Principle 1: Site of Design & Sun Position. Principle 2: Windows Design. Principle 3: Overhangs & Shading.

1. The University of Jordan
Faculty of Engineering & Technology
Mechanical Engineering Department
Special Topics in Thermal- Energy Management (0954594)
Spring Semester 2013/2014
Passive Solar Design
by Software
AHMAD NAZIH
Student No. : 0095626
5 May 2014

2. “Passive solar heating, cooling and lighting design must
consider the building envelope and its orientation, the
thermal storage mass, and window configuration and
design.”
– From ASHRAE Handbook –HVAC Applications 2007 , Ch. 33

3. • Passive solar buildings aim to maintain interior
Thermal comfort.
• Passive solar building design is one part of
green building design, and does not include
active systems such as Mechanical ventilation
or Photovoltaic.
Figure 1 : Design Aspects

4. :Three Passive Solar Principles that follow
Principle 1: Site of Design & Sun Position.
Principle 2: Windows Design.
Principle 3: Overhangs & Shading.

5. Passive Solar Principle 1
Site of Design & Sun Position
Historical Perspective:
Figure 2: The colonial "salt box" house
typical of New England architecture
of the 18th century
Figure 3: The solar-heated Rose Elementary
School in Tucson Arizona. It obtained over 80%
of its heat from solar energy for an entire
decade, beginning in 1948

6. “Choosing a good building shape and orientation are two of the most
critical elements of an integrated design.”
– Sustainable Buildings Industry Council
Passive Solar Principle 1
Site of Design & Sun Position
Figure 3: House Design before
editing
Figure 4: House Location before editing

7. Passive Solar Principle 1
Site of Design & Sun Position
- Orient the long, east - west axis of a house within 10 degrees east or west of true south
Figure 5: House Location and sun path after editing (SketchUp software)

8. Passive Solar Principle 1
Site of Design & Sun Position
Figure 6: Sun Angle tool ( Sun Design Software)

9. Passive Solar Principle 1
Site of Design & Sun Position
Figure 7: Sun Position tool ( Sun Design Software)

10. Passive Solar Principle 1
Site of Design & Sun Position
Figure 8: Sun Path ( SunCalculator Software)
Figure 9: Sun Path tool (Sun Design Software)

11. Results and Conclusions:
• The sun reaches higher in the sky in summer than in
winter.
• The sun rises further northward in the summer than in the
Winter.
• Relationship between Solar gain & degrees deviation from true south
Passive Solar Principle 1
Site of Design & Sun Position
Results of Calculations

12. Passive Solar Principle 2
Windows Design
Window Software:
Calculates thermal performance of fenestration, solar optical characteristics & glazing.
-Window Library
-Glass Library
-Gas Library
-Glazing System Library
-Environment Condition Library
-Divider Library
-Shading Layer Library
Figure 10: Window library (Window v6.3 Software)

13. Passive Solar Principle 2
Windows Design
– In general, we want to tune our windows
thus:
• South:
– High solar heat gain coefficient (SHGC), >0.5
• East, west:
– Low solar heat gain coefficient (SHGC), <0.4
• All exposures:
– Low U-factor to minimize heat loss (for best
overall performance for both seasons)

14. Passive Solar Principle 2
Windows Design
Window v6.3 Software

15. Passive Solar Principle 2
Windows Design
-Locate most windows on the south side of a house.
-Minimize windows on the north, west, and east sides.
(Too much glazing on east and west walls causes summer overheating).
(Too much glazing on north walls results in excessive heat loss).
Results and Conclusions:
Results of Calculations

16. Passive Solar Principle 3
Overhangs & Shading

17. Passive Solar Principle 3
Overhangs & Shading
Figure 11: Overhang Design tool(Sun Design Software) Figure 12: Overhang Recommendations tool
(Sun Design Software)
In a typical commercial
building, lighting, heating and
cooling represents as much as
65% of the total energy
consumption, which puts a
significant burden on an
operating budget.

18. Passive Solar Principle 3
Overhangs & Shading
Recommended Pitched Overhang
Overhang Annual Analysis tool(Sun Design Software)
Recommended Horizontal Overhang
Non-Recommended Pitched Overhang

19. Passive Solar Principle 3
Overhangs & Shading
Horizontal Shading tool
( Sun Design Software)

20. Trees also clean the air, create habitat and play
areas for children as well as add aesthetic beauty
to the neighborhood.
Passive Solar Principle 3
Overhangs & Shading

21. -- Passive solar design can reduce heating temperatures by 30-50%
- Sunlight is free and by reducing the use of artificial lighting allows energy savings.
Artificial lighting can amount to 35% of a commercial building's energy costs !
- Passive solar systems require no maintenance, as there are no filters to change or
ducts to clean.
-Passive solar design is a completely clean energy source. It produces no harmful
fumes, pollutants or emissions that can harm the environment.
Passive Solar Principle 3
Overhangs & Shading
Results and Conclusions:
Results of Calculations

22. References
1- Sustainable By Design, SunDesign Software
2- SunTool, SketchUp Software
3- Window v6.3 Software
4- HAP Software
5- The Passive Solar House, James Kachadorian
7- American Society of Landscaping Architects (ASLA)
https://www.asla.org/
6- ASHRAE Handbook ,HVAC Applications 2007