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# 11 mn01.pptx

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building energy software - parasol

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• The orientation is important for calculation of transmittance propertiesWhen the orientation is 180 deg the ext. wall faces south.
• g-value -- the sum of primary transmittance (T-value) and secondary transmittance. The secondary transmittance is the ratio between solar insolation and the part of the solar energy absorbed in the window/solar shade materials, which reaches the room through heat transport.
• T-value -- primary solar energy transmittance. The ratio between the transmitted insolation through the window/sunshade system and the insolation
• ### 11 mn01.pptx

1. 1. Solar protection inbuildings using PARASOL(BEA software) By ANIRUDH B ME Energy
2. 2. IntroductionParasol can produce the following results:Primary and total solar transmittance for the sunshade and the window for each month during a year.Daily values of cooling and heating demand, and the maximum cooling and heating input over the year.Duration diagrams for indoor temperatures and cooling and heating load.Duration diagram for operative room temperatures.Daily values of primary transmitted solar radiation.Design days for heating and cooling.Monthly and annual values of energy use for pre-heating and pre-cooling of the inlet air.Monthly and annual values of electricity output when a sunshade of type PV screen is used.
3. 3. Comparison of two different window structures and sun shades1.Solar protection simulation using single pane window andawning sunshade:Geometry of the room:
4. 4. Comparison of two different window structures and sun shades1.Solar protection simulation using single pane window andawning sunshade:Window embrasure andframe:
5. 5. Comparison of two different window structures1.Solar protection simulation using double pane window andawning sunshade:Site and orientation:
6. 6. Comparison of two different window structures1.Solar protection simulation using single pane window andawning sunshade:Walls construction:
7. 7. Window type:
9. 9. Interpane Sunshade: Venetian blind
10. 10. Internal Sunshade: Pleated curtain
11. 11. Solar Transmittance Simulation: Double pane window withawning sunshade
12. 12. Solar Transmittance Simulation: Double pane window withawning sunshade
13. 13. Energy Balance Simulation: Double pane window with awningsunshade (Energy required to keep the inlet air at 17 deg C)
14. 14. Energy Balance Simulation: Double pane window with awningsunshade ( solar insolation with and without sunshade)
15. 15. Energy Balance Simulation: Double pane window with awningsunshade ( heat and cold energy required with sunshade per day)
16. 16. Energy Balance Simulation: Double pane window withawning sunshade (design days – peak load)
17. 17. Energy Balance Simulation: Double pane window withawning sunshade (design days – outdoor temp)
18. 18. Solar transmittance Simulation: Triple pane window withawning sunshade
19. 19. Solar transmittance Simulation: Triple pane window withawning sunshade
20. 20. Energy balance Simulation: Triple pane window withawning sunshade
21. 21. Energy balance Simulation: Triple pane window withawning sunshade
22. 22. Energy balance Simulation: Triple pane window withawning sunshade
23. 23. Energy balance Simulation: Triple pane window withawning sunshade
24. 24. Energy balance Simulation: Triple pane window withawning sunshade
25. 25. Conclusion:Solar protection in buildings is simulated for two differentwindow structures and arrived with the following conclusion:The maximum cooling and heating load decreases by 9W and 36W when triple pane window is used.Therefore the cooling and heating demand also decreases accordingly.The usage of sunshades during summer conditions is a must since it reduces the energy usage by nearly 45 -50% (in both window structures)The usage of sunshades during winter conditions must be avoided since it reduces energy usage by nearly 30% (in both window structures).
26. 26. References:PARASOL V6.6 – Energy Efficiency and Renewable Energy, US department of Energy.
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