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155 articles for “air temperature”
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Research ArticleOpen accessIn the abstractPrevention of Heat Stress in Lactating CowsVladimir Zaitsev, Vasily Korotkiy, Nadezhda Bogolyubova et al.In summer, when the air temperature rises, dairy cattle are very susceptible to heat stress, which results in a significant decline in productivity. The goal of the study is to assess how a Coniferous Energy Supplement (CES) made from raw materials derived from forestry waste affects lactating cows' ruminal digestion, milk production, and quality in extreme temperatures. Two sets of … …American Journal of Animal and Veterinary Sciences, Vol. 19, Issue 1 · 19 Dec 2023 · 5,115 accessesView PDFCite
Research ArticleOpen accessIn the abstractStable Nitrogen Isotopic Changes in Winter Wheat (Triticum aestivum L.) Induced by its Growth TemperatureZhou Feng Wang, Wei Guo Liu, Rui Juan HaoThe nitrogen dynamics of plants can be quantified using the variation in their δ15N level. This reveals details of plant physiological characteristics and the relationship between plants and their growth conditions. To better understand plant nitrogen dynamics and the effects of external temperature changes on their nitrogen isotopic composition, we investigated the δ15N characteristics in Triticum aestivum and its mother … …American Journal of Agricultural and Biological Sciences, Vol. 12, Issue 1 · 21 Mar 2017 · 8,127 accessesView PDFCite
Research ArticleOpen accessIn the abstractDeveloping and Testing Dynamic Models for HVAC Systems Using System Identification ApproachNabil Nassif, Jasmine Buford, Taher M. Abu-LebdehThis paper proposes integrated modeling and optimization methods for a chilled water HVAC system using a system identification approach. Two multiple input-single output models are developed to find the supply air temperature and fan power of the investigated chilled water air handling unit AHU. To test the proposed models, actual data are collected from existing HVAC systems. Different fan and … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 1 · 15 Mar 2017 · 7,715 accessesView PDFCite
Research ArticleOpen accessIn the abstractBiodegradation of BTEX: Optimization through Response Surface MethodologyAyat E. El Telib, Muftah H. El-Naas, Janice A. AcioResponse Surface Methodology (RSM) was used to optimize the biodegradation of Benzene, Toluene, Ethyl benzene and m-, o-, p-Xylene (BTEX) by Pseudomonas putida immobilized in PVA matrices in a specially-designed novel Spouted Bed Bioreactor System (SBBS). A mixture of 60 mg L-1 of BTEX compounds in air was contacted with the immobilized bacteria in three spouted bed bioreactors in series. … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 1 · 3 Jan 2017 · 8,285 accessesView PDFCite
Research ArticleOpen accessIn the abstractGeometric Optimization of Complex Heat Exchangers using Constructal TechniqueNahum Yustus GodiThe application of microchannel heat exchangers for cooling is documented in this study. Numerical optimization is carried out with the goal of minimising the peak wall temperature in the microchannel heat sink modelled with solid and half hollow square micro fins. A high-density heat flux q'' from a microelectronic device was applied at the bottom wall of the microchannel heat … …American Journal of Engineering and Applied Sciences, Vol. 15, Issue 1 · 8 Feb 2022 · 6,317 accessesView PDFCite
Research ArticleOpen accessIn the abstractDouble Diffusive Convection Heat and Moisture Transfer Inside a Planted Roof Building Under Hot-Humid Climate: Case of Lomé City in West AfricaHodo-Abalo Samah, Magolmèèna Banna, Belkacem ZeghmatiPlanted roofs have been investigated as a passive cooling technology for energy efficiency purposes in buildings. More quantitative data on this topic are required to solve a lack of information for many specific regions. This study is focused on a numerical investigation of the thermal comfort inside a green roof rectangular ventilated cavity in a hot and humid climate like … …American Journal of Applied Sciences, Vol. 19, Issue 1 · 7 Feb 2022 · 6,997 accessesView PDFCite
Research ArticleOpen accessIn the abstractInvestigating the Dynamic Thermal Behavior of Building Envelope in Summer Conditions By Means of in-Field Continuous MonitoringAnna Laura Pisello, Gloria Pignatta, Cristina Piselli et al.The effect of dynamic properties of building opaque envelope in summer conditions is investigated by means of an extensive continuous monitoring of a dedicated experimental field. Two test-buildings, a weather station and two microclimate stations positioned in each test-building represent the experimental field. The prototype buildings have been specifically designed to present the same stationary envelope properties, but different construction … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 3 · 25 Apr 2016 · 8,562 accessesView PDFCite
Research ArticleOpen accessIn the abstractOptimization of a Combined Approach for the Treatment of Carbide Slurry and Capture of CO2Shereen Hasan, Muftah H. El-NaasThe aim of this study is to evaluate the potential use of electrocoagulation in the treatment of carbide slurry, a wastewater generated during the production of acetylene, and in the capture of carbon dioxide. An electrochemical batch reactor was used to carry out several experiments at different current densities, ranging between 140-290 A/m2. Pure air and a mixture of 10% … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 3 · 30 Dec 2015 · 7,992 accessesView PDFCite
Research ArticleOpen accessIn the abstractHeat Transfer and Effectiveness Analysis of a Cross-Flow Heat Exchanger for Potential Energy Recovery Applications in Hot-Humid ClimateA.R.S. Masitah, Mardiana I Ahmad, Y.M. YatimThis paper presents heat transfer and effectiveness analysis based on a physical model of a cross-flow heat exchanger. Using the model, the transferred heat and effectiveness (ε) in terms of temperature and NTU-method are calculated for both hot and cold streams. From the analyses, it is found that as air velocity increases, the transferred heat through heat transfer plates increases. … …Energy Research Journal, Vol. 6, Issue 1 · 15 May 2015 · 13,621 accessesView PDFCite
Research ArticleOpen accessIn the abstractExperimental Comparisons of Anchovy Drying using Centrifugal and Gravitational Fluidized Bed TechniquesWatcharin Dongbang, Rungtawan WiwattanasirikulThe present study investigated experimental comparisons of anchovy drying using centrifugal and gravitational fluidized bed techniques; in addition, drying models and thermal efficiency were also investigated. In the first stage, fresh anchovy was dried with solar energy to reduce the initial moisture content from 81±1%wb to around 65%±1wb. In the second stage, the anchovy was dried with a dryer from … …American Journal of Applied Sciences, Vol. 12, Issue 2 · 23 Apr 2015 · 7,351 accessesView PDFCite