**2.3 Determining shading behaviours of established type dimension alternatives**

 investigate established The horizontal type shading devices with their dimension behaviours, window, wall and shading device's dimension alternatives, which affect directly performance of shading device, have been determined. In this situation, horizontal device priority-dimension alternatives, like "overhang" priority-dimension alternatives, are applied separately to a fixed "W " type window with width 1.00m., height 1.20m., and the shading blocks are analyzed as seen in Figure 4. Here, overhang is 65 cm wide. Effective Shading Coefficients are seen Figure 5. So average shading coefficients are 15% in winter and 83% in summer which provides energy efficiency.

Fig. 4. Overhang


Fig. 5. Effective Shading Coefficients

### **3. Conclusion**

320 Solar Radiation

**2.3 Determining shading behaviours of established type dimension alternatives** 

 investigate established The horizontal type shading devices with their dimension behaviours, window, wall and shading device's dimension alternatives, which affect directly performance of shading device, have been determined. In this situation, horizontal device priority-dimension alternatives, like "overhang" priority-dimension alternatives, are applied separately to a fixed "W " type window with width 1.00m., height 1.20m., and the shading blocks are analyzed as seen in Figure 4. Here, overhang is 65 cm wide. Effective Shading Coefficients are seen Figure 5. So average shading coefficients are 15% in winter

Fig. 3. Shading device types

Fig. 4. Overhang

and 83% in summer which provides energy efficiency.

In the design of shading devices, evaluation of many variables data makes the design a complex process. This paper describes an approach to simplify and clarify external shading device design. So a table is generated to determine how to select the criteria for the interior comfort in any building area. Phases and priorities of shading device criteria are analyzed and presented in table 1. Therefore, the design strategies that were followed in this study could be applicable to any building area.

The criteria which are determined from the results of analyses, should be used as a substructure for commercially supplied shading devices like awnings, louvers, shutters and Venetian blinds by designers and users. Furthermore, "the design strategies" which are established in this study are applicable to any building in residential district.

### **4. References**


*Analysis of energy saving using natural ventilation in a traditional Italian building*, Energy and Buildings, 2003, 35, pp.153-159.Alibaba, H., Z. & Özdeniz, M., B. (2004). *Building elements section system for architects*, Building and Environment, 39, pp307- 316.

