Results 31 to 40 of about 4,954 (163)
Agronomy, 2019 Two experiments were conducted in different cropping seasons under Mediterranean climatic conditions to investigate the impact of two cooling systems (fan-pad evaporative as opposed to fan ventilation) on greenhouse microclimate and soilless cucumber ...
Georgios Nikolaou +3 more
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The Experimental Investigation on the Transpiration Cooling
Bulletin of JSME, 1965 In this paper, the effectiveness and the coefficient of heat transfer with the transpiration of distilled water and air across the porous plate are discussed. The conditions selected for the experiments were as follows : Velocity of bulk flow is 5∼35 m/sec Temperature of bulk flow is 100∼600°C Mass flow ratio is 0.05∼10% From this investigation the ...
KIKKAWA, Shinzo, NAKATANI, Yukimasa
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A numerical analysis of transpiration cooling as an air cooling mechanism
Heat and Mass Transfer, 2018 The present study is focused on investigation of heat transfer from a porous plate by cooling of air with transpiration cooling. Effects of Reynolds number of hot gas stream, inlet temperature of air and mass flow rate of water on local wall temperature and cooling effectiveness of porous flat plate and efficiency of the system inside a rectangular ...
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Transpirational Cooling of Greenhouse Crops [PDF]
, 2000 Background Transplanting vegetable seedlings to final spacing in the greenhouse is common practice. At the time of transplanting, the transpiring leaf area is a small fraction of the ground area and its cooling effect is rather limited. A preliminary modeling study suggested that if water supply from root to canopy is not limiting, a sparse crop could ...
Ido Seginer +3 more
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Journal of the Mechanical Behavior of MaterialsTranspiration cooling is an efficient thermal protection technique for the leading-edge of hypersonic aircraft. However, the local overheating of the transpiration cooling structure is prone to the defect of heat transfer deterioration, which seriously ...
Chen Weijie +5 more
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Aerospace, 2022 With lightweight, multifunctional, and designable characteristics, porous/lattice structures have started to be used in aerospace applications. Porous/lattice structures applied in the thermal management technology of aerospace vehicles have attracted ...
Jian Liu +4 more
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Warming/cooling effects of cropland greenness changes during 1982–2006 in the North China Plain
Environmental Research Letters, 2013 This study analysed the changes in cropland greenness during 1982–2006 in the North China Plain (NCP) and investigated the warming/cooling effects of the greenness changes.
Xuezhen Zhang +3 more
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Modelling and Simulation of Transpiration Cooling Systems for Atmospheric Re-Entry
Aerospace, 2020 Aerothermodynamic heating is one of the primary challenges faced in progressing towards reliable hypersonic transportation. In the present study, the transpiration cooling method applied to the thermal protection system of re-entry vehicles is ...
Deep Bandivadekar, Edmondo Minisci
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Matter and energy influence of forest vegetation on the environment
Наукові праці Лісівничої академії наук України, 2020 Modern climate change is an important environmental problem of mankind. It is largely due to the powerful anthropogenic impact on the biosphere, in particular, deforestation.
Platon Tretyak, Jurij Chernevyy
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Dynamic data driven adaptive control of an active-passive combined thermal protection system
Case Studies in Thermal EngineeringThermal protection systems (TPSs) are critical for hypersonic flight safety. Conventional passive TPSs suffer from limited adaptability to thermal overload and increased structural weight under high heat-flux conditions, whereas active TPSs often exhibit
Qiang Yang +5 more
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