COLUMN ENGINEER'S NOTEBOOK FIGURE 7 Shading effectiveness diagram for 2 ft (0.6 m) horizontal overhang for Houston. (29.7° nsorth latitude). (Image courtesy WSP Group) 12 10 8 6 J F M A M J J A S O N D 18 16 14 12 10 8 6 J F M A M J J A S O N D West Window Percent Shaded from Overhang 14 12 10 8 6 J F M A M J J A S O N D 100 90 80 70 60 50 40 30 20 10 0 100 90 80 70 60 50 40 30 20 10 0 18 16 14 12 10 8 6 J F M A M J J A S O N D South Window Percent Shaded from Overhang East Window Percent Shaded from Overhang 18 18 16 14 Hour 16 Hour With Overhang 18 East Window Shading (100% No Solar; 0% No Shading) 12 10 8 6 J F M A M J J A S O N D 100 90 80 70 60 50 40 30 20 10 0 16 14 Hour 14 Hour No Overhang 16 100 90 80 70 60 50 40 30 20 10 0 Hour 18 South Window Shading (100% No Solar; 0% No Shading) Hour West Window Shading (100% No Solar; 0% No Shading) 12 10 8 6 J F M A M J J A S O N D 100 90 80 70 60 50 40 30 20 10 0 100 90 80 70 60 50 40 30 20 10 0 Conclusion Climate analyses are a very common component of the pre-design phase of most projects that aspire to energy efficiency goals. These studies designed to facilitate climate responsive design, enabling higher levels of energy efficiency. Many of the available examples of climate analysis, however, are merely colorful renderings of the raw climate data. Actual insight into appropriate energy-efficiency strategies typically is delayed until actual building energy modeling commences. The examples in this article demonstrate that significant insights can be gained from processing the raw climate data, using standard spreadsheets, that accept climate data input for specific locations, and generate information directly relevant to the building project. Using this data to generate these analyses with a standard spreadsheet facilitates more generic conclusions about the impact of local climate on strategies for the building and eliminates the need for generic energy modeling efforts that are more time consuming. Desiccant and Energy Recovery wheels available in standard and custom sizes. Call or email us for a quote today! References 1. ASHRAE Standard 55-2016, Thermal Environmental Conditions for Human Occupancy. 2. CIBSE. 2005. "Application manual AM10: natural ventilation in non-domestic buildings." London: Chartered Institution of Building Services Engineers. 225 -753 -1700 1700 info@rotorsource.com | www.rotorsource.com J U N E 2 0 19 ashrae.org ASHRAE JOURNAL 71http://www.rotorsource.com http://www.ashrae.org