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building energy software - parasol

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

Transcript

  • 1. Solar protection inbuildings using PARASOL(BEA software) By ANIRUDH B ME Energy
  • 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. Comparison of two different window structures and sun shades1.Solar protection simulation using single pane window andawning sunshade:Geometry of the room:
  • 4. Comparison of two different window structures and sun shades1.Solar protection simulation using single pane window andawning sunshade:Window embrasure andframe:
  • 5. Comparison of two different window structures1.Solar protection simulation using double pane window andawning sunshade:Site and orientation:
  • 6. Comparison of two different window structures1.Solar protection simulation using single pane window andawning sunshade:Walls construction:
  • 7. Window type:
  • 8. External Sunshade: Awning
  • 9. Interpane Sunshade: Venetian blind
  • 10. Internal Sunshade: Pleated curtain
  • 11. Solar Transmittance Simulation: Double pane window withawning sunshade
  • 12. Solar Transmittance Simulation: Double pane window withawning sunshade
  • 13. Energy Balance Simulation: Double pane window with awningsunshade (Energy required to keep the inlet air at 17 deg C)
  • 14. Energy Balance Simulation: Double pane window with awningsunshade ( solar insolation with and without sunshade)
  • 15. Energy Balance Simulation: Double pane window with awningsunshade ( heat and cold energy required with sunshade per day)
  • 16. Energy Balance Simulation: Double pane window withawning sunshade (design days – peak load)
  • 17. Energy Balance Simulation: Double pane window withawning sunshade (design days – outdoor temp)
  • 18. Solar transmittance Simulation: Triple pane window withawning sunshade
  • 19. Solar transmittance Simulation: Triple pane window withawning sunshade
  • 20. Energy balance Simulation: Triple pane window withawning sunshade
  • 21. Energy balance Simulation: Triple pane window withawning sunshade
  • 22. Energy balance Simulation: Triple pane window withawning sunshade
  • 23. Energy balance Simulation: Triple pane window withawning sunshade
  • 24. Energy balance Simulation: Triple pane window withawning sunshade
  • 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. References:PARASOL V6.6 – Energy Efficiency and Renewable Energy, US department of Energy.