Revolutionary integrated cool roofing technologies system for attic temperature reduction in buildings
Source abstract
Abstract
The cooling load is the most prominent building energy consumption. The roof's poor thermal resistance effect causes buildings in the tropical climate to receive high solar heat that afterwards transfer to the attic before entering the living space. Eight roof design models were built and evaluated under 90 min of solar radiation exposure to noon-time level solar intensity to determine their cooling effect at noon every day. Significantly, the fantastic cool roof system was proven effective with a structural heat gain reduction of 85.5%. The reduction of concrete's density from 2500 kg/m3 to 1100 kg/m3 with lightweight foamed concrete technology allowed the roof's lower surface temperature to decrease by 21.6% (66.3–52.0 °C). Adding a highly solar reflective insulation system with roof ventilation reduced the structural heat gain by up to 33.3%. The combination effects of lightweight foamed concrete roof tile, hollow longitude sections, thermal reflective coating, reflective insulation system, and renewable solar-powered fans reduce the peak attic temperature from 42.8 °C to 32.2 °C.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Urban Heat Island Mitigation · Building Energy and Comfort Optimization · Solar Energy Systems and Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (39)
Show source-provided references
1. Global cooling updates: Reflective roofs and pavements10.1016/j.enbuild.2012.02.055 ↗
2. To examine the energy conservation potential of passive & hybrid downdraught evaporative cooling: a study for commercial building sector in hot and dry climate of Ahmedabad10.1016/j.egypro.2012.11.126 ↗
3. Comprehensive evaluation of thermal and energy performance of radiative roof cooling in buildings
4. Climatic classification for building design in India10.1080/00038628.1993.9696730 ↗
5. Thermal lag and decrement factor of a coconut-ferrocement roofing system10.1016/j.conbuildmat.2014.01.048 ↗
6. A classification of studies on properties of foam concrete10.1016/j.cemconcomp.2009.04.006 ↗
7. A life-cycle cost analysis for an optimum combination of cool coating and thermal insulation of residential building roofs in Tunisia10.1016/j.energy.2018.04.010 ↗
8. Effects of composition and exposure on the solar reflectance of portland cement concrete10.1016/S0008-8846(02)00835-9 ↗
9. Solar reflectance values for concrete
10. A systematic investigation of the factors affecting the optical properties of near infrared transmitting cool non-white coatings10.1016/j.solmat.2014.03.019 ↗
11. A novel technique for the production of cool colored concrete tile and asphalt shingle roofing products10.1016/j.solmat.2009.12.012 ↗
12. Cool materials rating instrumentation and testing
13. Passive cooling techniques through reflective and radiative roofs in tropical houses in Southeast Asia: a literature review10.1016/j.foar.2014.06.002 ↗
14. A review of thermally activated building systems (TABS) as an alternative for improving the indoor environment of buildings10.3390/en15176179 ↗
15. A comparison of the thermal conductivity of oil palm shell foamed concrete with conventional materials10.1016/j.matdes.2013.04.078 ↗
16. Geopolymer foam concrete: an emerging material for sustainable construction10.1016/j.conbuildmat.2014.01.081 ↗
17. Eco-efficient construction and building materials research under the EU Framework Programme Horizon 202010.1016/j.conbuildmat.2013.10.058 ↗
18. Using lightweight cement composite and photocatalytic coating to reduce cooling energy consumption of buildings10.1016/j.conbuildmat.2017.04.059 ↗
19. A review on thermal performance of roofing materials in Malaysia
20. A naturally ventilated cavity roof as potential benefits for improving thermal environment and cooling load of a factory building10.1016/j.enbuild.2010.09.009 ↗
21. Effects of the design parameters of ridge vents on induced buoyancy-driven ventilation10.3390/buildings12020112 ↗
22. Energy performance of residential buildings in Singapore10.1016/j.energy.2009.10.039 ↗
23. Reflective Insulation Manufacturers Association International (RIMA-I), Reflective Insulation, Radiant Barriers and Radiative Control Coatings, 2002, 〈https://www.rimainternational.org/pdf/handbook.pdf〉.
24. Evaluation of heat transfer models for hollow blocks in whole-building energy simulations10.1016/j.enbuild.2019.109338 ↗
25. M. Al-Khameis, M. Mahmoud, A. Ben-Nakhi, A.M. Mahmoud, A. Ben-Nakhi, Couple Heat. Transf. Modes Calc. Cool. Load. hollow Concr. Build. walls 2011 doi: 10.1080/19401493.2010.507821.
26. Insulation materials for the building sector: A review and comparative analysis10.1016/j.rser.2016.05.045 ↗
27. Performance analysis of cool roof, green roof and thermal insulation on a concrete flat roof in tropical climate10.5109/1544078 ↗
28. American Concrete Institute, Guide for cellular concretes above 50 lb/ft3 (800 kg/m3); ACI 523.3 R14. 2014.
29. Effect of geometry of holes on heat transfer of concrete masonry bricks using numerical analysis10.1007/s13369-017-2482-6 ↗
30. Finite element modeling of low heat conducting building bricks
31. Effects of key factors on the heat insulation performance of a hollow block ventilated wall10.1016/j.apenergy.2018.09.215 ↗
32. Experimental analysis on the active and passive cool roof systems for industrial buildings in Malaysia10.1016/j.jobe.2018.05.001 ↗
33. Recent research and development on the use of reflective technology in buildings – a review
34. Effect of expanded perlite on the mechanical properties and thermal conductivity of lightweight concrete10.1016/j.enbuild.2010.11.008 ↗
35. Estimating thermal performance of cool colored paints10.1016/j.enbuild.2009.07.026 ↗
36. K.T. Zingre, M.P. Wan, S.K. Wong, W.T.T. Boo, I.L.L. Yen, Model. Cool Roof. Perform. Double-Ski. roofs Trop. Clim. 82 2015 813 826 doi: 10.1016/j.energy.2015.01.092.10.1016/j.energy.2015.01.092 ↗
37. Investigating the performance of reflective insulation and low emissivity paints for the energy retrofit of roof attics10.1016/j.enbuild.2018.10.003 ↗
38. Attic baffle size and vent configuration impacts on attic ventilation10.1016/j.buildenv.2015.01.028 ↗
39. Department of Standards Malaysia, Malaysian standard MS 2680: Energy efficiency and use of renewable energy for residential buildings - Code of practice, 2017.