Evaporative Heat Flow
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Thermal profiles in pervious concrete during summer rain simulations
ABSTRACT Pervious concrete pavement systems may have many environmental benefits including the mitigation of heat island impacts. This mitigation is a complex combination of pervious concrete’s insulating capability and its ability to store water which may provide evaporative cooling. However, the introduction of water may also bring heat into the system,
Matéria (Rio J.). Publicado em: 18/10/2018
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2. EXPERIMENTAL APPROACH TO ASSESS EVAPORATIVE COOLING UNDER FORCED AIR FLOW
Abstract Air blast is one of the most employed industrial chilling methods. It can be enhanced, i.e., increasing heat transfer and reducing cooling time, by superficial evaporative phenomena. This work reports a methodology, including experimental setup and mathematical modelling, to quantify the air chilling enhancement by wetting the surface of the object
Braz. J. Chem. Eng.. Publicado em: 2017-01
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3. Analysis of Gas Turbine Performance with Inlet Air Cooling Techniques Applied to Brazilian Sites
Abstract: For geographic regions where significant power demand and highest electricity prices occur during the warm months, a gas turbine inlet air cooling technique is a useful option for increasing output. Inlet air cooling increases the power output by taking advantage of the gas turbine's feature of higher mass flow rate, due the compressor inlet temper
J. Aerosp. Technol. Manag.. Publicado em: 2012-09
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4. Heat and mass transfer in two-phase flow around airfoils with aeronautical anti-ice systems. / Transferência de calor e massa no escoamento bifásico em torno de aerofólios equipados com sistemas de antigelo aeronáuticos.
It is required to prevent ice accretion on wings and horizontal stabilizers because it may cause aerodynamic performance degradation, weight increase, flight control difficulties and, in critical cases, may lead to operational safety margins reduction. When aircraft flies through clouds containnig supercooled water droplets, which are in metastable equilibri
Publicado em: 2009
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5. Refrigeração evaporativa por aspersão em telhas de fibrocimento: estudo teórico e experimental
This research focuses the evaporative cooling by water aspersion on wavy cement fiber tiles in the city of São Carlos, SP, seeking to use it to reduce the buildings heat gains. A theoretical model was developed, based on classic equations of fluids mechanic, applied to iterative calculations of heat flows on the tile superior surface, considered as control
Publicado em: 2007
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6. An evaporative and desiccant cooling system for air conditioning in humid climates
Evaporative cooling operates using water and air as working fluids. It consists in water evaporation, through the passage of an air flow, thus decreasing the air temperature. This system has a great potential to provide thermal comfort in places where air humidity is low, being, however, less efficient where air humidity is high. A way to solve this problem
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2005-09
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7. Evapotranspiration and maximum transpiration in a high density coffee plantation. / Evapotranspiração e transpiração máxima em cafezal adensado.
Coffee arabica plants are extensively cultivated in tropical regions and it is a crop of great economic importance for Brazil. Currently, it is cultivated in areas with water deficits for which the irrigation is necessary to increase yields and drink quality. To increase irrigation efficiency one needs to know the water consumption of coffee plantation, info
Publicado em: 2003
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8. Selective brain cooling in goats: effects of exercise and dehydration.
1. Measurements of brain and central blood temperature (Tbr and Tbl), metabolic rate (MR) and respiratory evaporative heat loss (REHL) were made in trained goats walking on a treadmill at 4.8 km h-1 at treadmill inclines of 0, 5, 10, 15 and 20% when they were fully hydrated and at 0% when they had been deprived of water for 72 h. 2. In hydrated goats, exerci