Download to read offline
![1. Lona MuitoTransparente. (0.64 B) [ Reference case study ]
2. the Portada De Madeira. (0.59 B)](https://image.slidesharecdn.com/presentationg4energyandcomfort-151217212159/85/Presentation-energy-and-comfort-17-320.jpg)
![BuildingThermal inertia
ASSUMED CONTRIBUTION from
Pavements and Separation Walls:
maximum allowed superficial mass (150Kg/m2)
reduction factor equal to 1.
Sseparationwalls = 130m2
It = [2 x (150 x 1 x 130) + (150 x 189,12)] / 189,12 = 356 Kg/m2](https://image.slidesharecdn.com/presentationg4energyandcomfort-151217212159/85/Presentation-energy-and-comfort-23-320.jpg)
![PlaneThermal bridges
ASSUMED
Concrete Intermediate Pillars (0,25m thick)
R = 0,25/2,3 = 0,11 [(m2.ºC)/W]
Internal Insulation Distributed insulation](https://image.slidesharecdn.com/presentationg4energyandcomfort-151217212159/85/Presentation-energy-and-comfort-24-320.jpg)
Uploaded byAhmad Alshaghel
Presentation energy and comfort
This document summarizes strategies for improving energy and comfort in buildings. It discusses orientation, window area, air change rate, HVAC systems, shading systems, domestic hot water systems, insulation, net zero energy buildings, and thermal comfort. For each topic, it analyzes the existing or reference solution and proposes three alternative solutions, providing energy usage and classification for each. The best solutions are identified based on balancing energy savings and costs. Thermal comfort analysis is also presented, comparing measured indoor temperatures to the comfort zone.
More Related Content
Similar to Presentation energy and comfort
Presentation energy and comfort
- 1. Energy and Comfortin Buildings Practical assessment University of Minho Master of Sustainable Rehabilitation And Construction 18-Dec-2015 Group 4: Ahmad Alshaghel Chadi Charles NisreenArdda Rita Correia
- 2. Energy and Comfortin Buildings • Introduction • Orientation • Window area • Air change rate • HVAC systems • Shading system • DHW systems • Insulation • NZEB • Thermal Comfort
- 3. • Introduction Age ofEarth = 4.6 Billion Year Age of Industrial revolution= 300 year Age =46 years After 1 Minute 50% resources New tenant Legalization is required Every single movement is required Building = 40% CO2
- 4.
- 5. Heating gains decrease2% total energy increase 0.4% Solution 1 B0.62Ntc/NtEnergy Class
- 6. Solution 2 energyfor cooling increases around 13%. the total energy increase 6% B0.66Ntc/NtEnergy Class
- 7. Solution 3 energyfor cooling and cooling about 1%. the total energy increase 1% B0.61Ntc/NtEnergy Class
- 8. • Windows Window isnot hall in the wall B0.61Ntc/NtEnergy Class
- 9. Solution 1 Transmission/cooling decrease about 10% WWR51%28% energy for heating decrease about 5% energy for cooling decrease about 13% global energy decrease 6% B0.58Ntc/NtEnergy Class
- 10. Solution 2 Transmission/cooling decrease about 10% WWR56.1%32% energy for heating decrease about 4% energy for cooling decrease about 9% global energy decrease 4.5% B0.59Ntc/NtEnergy Class
- 11. Solution 3 Transmission/cooling decrease about 15% energy for heating decrease about 8% energy for cooling decrease about 20% global energy decrease 10% B0.59Ntc/NtEnergy Class Solution 1+ Solution 2
- 12. • Air Changerate (Ventilation) Measure of the air volume added to or removed from a space (normally a room or house) divided by the volume of the space. Reference Solution
- 13. First suggested Solution AirChange rate (Ventilation Rate): Second suggested Solution Third suggested Solution Grids + Ducts ACr EC ACr EC ACr EC Mechanical Fan+ Ducts Heat Recovery system
- 14. • HVAC (heatingand cooling): Most important factor to distinguish the building thermal comfort, acceptable indoor air quality and the energy consumption Reference Solution
- 15. First suggested Solution Secondsuggested Solution Third suggested Solution Biomass boiler EC EC EC water heat pump+ Digital Inverter Ceiling Wall AC HVAC (heating and cooling): Reference CoolingHeating
- 16. First we haveto define the composition of the glass used in the case study, where we have by default that the gtvi=0.55 , which in the regulation book in table 12 we can define that the glass used is Vidro Duplo (int + ext) and colorido na massa 5mm + incolor 4 a 8 mm. • Shading Systems
- 17. 1. Lona MuitoTransparente.(0.64 B) [ Reference case study ] 2. the Portada De Madeira. (0.59 B)
- 18. 3. Persiana deReguas de Madeira (0.60 B) 4. Persiana De Reguas Metalicas Ou Plasticas on the south and east and west side only . (0.59 B) The best solution is the Persiana De Reguas Metalicas ou Plasticas installed only on the south and east and west elevations where it combines the economical benefits with the sustainable solutions for a better overall project.
- 19. • AQS orDHW Domestic Hot Water. Water used, in any type of building, for domestic purposes, principally drinking, food preparation, sanitation and personal hygiene. 1. Caldeira. The used model is a boiler that works on natural gas, and it is backed up by solar collectors which will renew the heat for the hot water. (0.61 B) 2. Water Heater (liquid fuel). the first solution is a water heater that works on Diesel oil, and it is backed up by solar collectors that renew the heat for the water to stay hot. (0.62 B)
- 20. 3. Boiler thatworks on Electricity. the second solution is a boiler that works on electricity and it’s backed up by photovoltaic solar panels that gives renewable electricity to power the boiler in a sustainable way. (0.62 B) 4. Stove Boiler. the third solution is a basic one where it is a stove boiler that boil water on solid fuel and it’s backed up by a geothermal heat pump that renew the heat for the water. (0.56 B) The best solution is the most organic one and it’s the third one the STOBE BOILER.
- 21. Insulation The possibilities forinsulation are numerous and can be very different both in type, volume, price, and environmental impact
- 22. The 3 Solutions InternalInsulation Distributed insulation External insulation
- 23. BuildingThermal inertia ASSUMED CONTRIBUTIONfrom Pavements and Separation Walls: maximum allowed superficial mass (150Kg/m2) reduction factor equal to 1. Sseparationwalls = 130m2 It = [2 x (150 x 1 x 130) + (150 x 189,12)] / 189,12 = 356 Kg/m2
- 24. PlaneThermal bridges ASSUMED Concrete IntermediatePillars (0,25m thick) R = 0,25/2,3 = 0,11 [(m2.ºC)/W] Internal Insulation Distributed insulation
- 25. LinearThermal bridges 2 values from the ITeCons online CATALOGUE Two exterior wall junctions and Wall – Frame junctions ASSUMED: Insulation material touches de window frame REH - DEFAULT VALUES
- 26. LinearThermal bridges 2 Usedvalues from the ITeCons online CATALOGUE -Internal Insulation
- 27. LinearThermal bridges 2 Usedvalues from the ITeCons online CATALOGUE -Distributed Insulation
- 28. LinearThermal bridges 2 Usedvalues from the ITeCons online CATALOGUE -External Insulation
- 29.
- 30. Results – Internalinsulation
- 31. Results – Distributedinsulation
- 32. External Insulation ITeCons Onlinecatalogue of constructive solutions
- 33. Results – Externalinsulation
- 34.
- 35.
- 36.
- 37.
- 38.
- 39. • nZEB PARAMETER SLECTEDSOLUTION 1. Orientation R 2. Windows 3 3. Shading 3 4. Insulation 3 5.Ventilation R 6. HVAC 1 7. AQS 3 + Efficient shower systems – Class A + PV Solar system
- 40.
- 41.
- 42. Thermal Comfort **The redline represents the comfort zone without an ambient control system **The blue line represents the comfort zone without an ambient control system
- 43. Results Average value ofthe measured outside temperature (7 previous days) Tn-i (ºC) Outside temperature (Weighted average) Tmp (ºC) Tn 13,51 Tn 13,54 14,85 Tn 15,49 Tn 17,68 Tn 16,07 Tn 15,58 Tn 14,18 AverageTr between 17h and 18h (Fireplace OFF) AverageTr between 18h and 22h30 (Fireplace ON) AverageTr between 23h and 1h (Fireplace stopped being feeded) 18,61 24,37 21,99
- 44. Results 17 18 19 20 21 22 23 24 25 26 27 14 14.5 1515.5 16 Tconf + 3ºC / Non Heated Tconf / Non Heated Tconf - 3ºC / Non Heated Measured Tr (17h-18h) Measured Tr (23h-1h) Tconf + 3ºC / Heated Tconf / Heated Tconf - 3ºC / Heated Mesured Tr (18h-22h30)
- 45.