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Creating a Great recording from the Start
Published in Lorne Bregitzer, Secrets of Recording: Professional Tips, Tools & Techniques, 2008
In a small space, the listening environment can be improved by absorbing much of the acoustic sound. The room does not necessarily need to sound completely dead, as no one will be listening to the music in a completely dead space. Concrete and tile are very reflective surfaces. Placing carpet, even an area rug, will absorb a good deal of the sound. The walls can be treated with professional acoustic foam. This can be expensive, but this investment will make it worthwhile in the long run. Wood is a semireflective surface. Placing wood along the walls is a good way of absorbing some of the sound, while maintaining a realistic listening environment. Bass traps can be placed in the corners to help eliminate or reduce any low-frequency room nodes that may exist in the control room.
Vietnamese Workforce Housing Research And Design
Published in Manuel Couceiro da Costa, Filipa Roseta, Joana Pestana Lages, Susana Couceiro da Costa, Architectural Research Addressing Societal Challenges, 2017
David Rockwood, Tran Duc Quang
The following criteria promise to improve human thermal comfort, while keeping initial construction costs to a minimum: (a) Build houses in compact clustered arrangement for self-shading in the block; (b) Orient buildings to minimize east and west sun exposure on exterior walls; (c) Use shading devices to protect the building envelope from direct sun; (d) Offer occupant control over moveable sunshade elements; (e) Insulate the building envelope and use radiant barriers and reflective surfaces to decrease thermal transfer; (f) Use cross and stack natural ventilation strategies; (g) Orient houses and blocks to prevailing winds during the hottest months of the year.
Evaluating the energy performance of ballasted roof systems
Published in Paul Fazio, Hua Ge, Jiwu Rao, Guylaine Desmarais, Research in Building Physics and Building Engineering, 2020
A. Desjarlais, T. Petrie, W. Miller, R. Gillenwater, D. Roodvoets
In recent years, new roofing membranes offering highly reflective surfaces have become the new rage of the industry, government, and code agencies. These membranes are used in fully adhered and mechanically fastened roof systems to take advantage of the reflective property of the membrane. With these systems offering aesthetically pleasing roofs that assist in saving energy for the building owner, ballast systems now seem a little old fashioned and out of step with the times.
Reduction of critical positive temperature gradients in jointed plain concrete pavements
Published in International Journal of Pavement Engineering, 2023
Charles A. Donnelly, Sushobhan Sen, Julie M. Vandenbossche
In addition to location, slab thickness, base type and albedo were also expected to affect the magnitude of the ELTG. As shown in Table 1, various values of these design features were considered in this analysis. Two base types were considered: asphalt-treated and granular, each having different thermal properties (Zapata et al. 2007). The slab thickness was varied from 150 to 325 mm, which represents a typical range of pavement thickness. Finally, three different albedo values, 0.3, 0.5 and 0.8 were considered. This represents typical concrete pavement surfaces, reflective surfaces using white cement and other reflective materials in the mixture, and highly reflective surfaces through the application of coatings, respectively. A full factorial analysis was performed for all 12 climate stations, resulting in a total of 288 structures in the database. Material properties were kept constant throughout the analysis. For the concrete slab, the thermal conductivity, heat capacity and unit weight was 4.2 × 10−6 Kcal/cm-sec-°C, 0.8 J/gK, and 23.6 kN/m3, respectively.
A numerical study of cool and green roof strategies on indoor energy saving and outdoor cooling impact at pedestrian level in a hot arid climate
Published in Journal of Building Performance Simulation, 2023
Mohamed H. Elnabawi, Esmail Saber
Such reflective surfaces seem to be more promising for several reasons, not only because reflecting incident solar energy is the most direct method of reducing its effect, but also because a solar reflective coating can reflect >90% of the received solar radiation back to the sky. Further, installing reflective coatings or paints on buildings is very simple compared to other passive measures as it can be applied as ordinary paint (Hernández-Pérez et al. 2014), whereas the initial and maintenance costs of a green roof are much higher. When reflective coatings are applied as wall or ground materials, they can elevate the mean radiant temperature and cause discomfort outdoor conditions (Falasca et al. 2019; Middel et al. 2020; Schrijvers et al. 2016); this is why they are commonly used on roofs due to their high and longer sun exposure compared to other building envelope components (Todeschi et al. 2020). This exposure contributes to nearly 50–60% of a building’s overall cooling load in hot, warm, humid and dry climatic zones (Rawat and Singh 2021). The application of a reflective coating to a roof creates what is known as a ‘cool roof’, an expression used to define roofing material with high solar reflectance and albedo, leading to a significant degree of reflection of solar radiation. The cool roof’s high thermal emittance also permits a large amount of absorbed heat to be released, enabling the material to be cooler and contributing to a mitigation of the UHI effect. In hot, arid climates, this may be an optimal solution to higher energy loads for cooling caused by increased air temperatures and to overcome the high rate of heat stress and other heat-related illnesses due to the very high temperature (Harlan et al. 2006). In these zones, 60% of total energy consumption is due to air conditioning loads (Elsarrag and Alhorr 2012).