Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 101 for “"air velocity"”.
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A thermistor anemometer for measurement of air velocity
Digitized by Kansas Correctional Industries
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A thermistor anemometer for measurement of air velocity
Digitized by Kansas Correctional Industries
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A study of the effect of air velocity and temperature on ground beef
Thesis (M.A.)--Michigan State University of Agriculture and Applied Science. Dept. of Hotel, Restaurant and Institutional Management, 1958
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Modeling VOC sorption of building materials and its impact on indoor air quality
… the indoor VOC concentration levels and indoor air quality in buildings. The objective of this study was to investigate experimentally the effects of environmental conditions (temperature, humidity and air velocity) on the sorption rate and capacity of three typical types of building materials …
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Passive design approach in enhancing natural ventilation performance of two storeys residential buildings in tropical climate
Air movement is one of the main factors contributing to thermal comfort. In achieving the comfort while maintaining low energy consumption, natural ventilation is the best source of air movement to relied on. However, inconsistency of surrounding air movement in urban areas may not provide …
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Agricultural spray droplet dispersion in turbulent windflow
… as matching the full-scale logarithmic man velocity profile with suitable surface roughness parameters. A general calculation scheme is presented for spacing horizontal flat plates to simulate weakly-sheared mean velocity profiles. Adequate full-scale matching of logarithmic mean velocity …
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Anemometry tools and procedures for greenhouse experiments
… particle transport all depend on the level of air speed at the leaf/atmosphere interface, the microclimate. Yet there seems to exist no standard method of measuring and documenting air velocity in greenhouses.
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Wall jet model for ceiling fan applications in broiler houses
A model was developed to predict velocity profiles of radial wall jets produced by ceiling fans and flowing over broiler chickens. Broilers were modeled by balloons with paper cylinders simulating the necks. Wall jet data was recorded for 91.5, 83.8 and 71.1 cm radius fans that were rated at 220, …
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Determination of the coefficient of heat transfer at the bed wall boundary of an externally heated fluidized bed
… temperature driving force and mass superficial air velocity on the coefficient of heat transfer at the bed wall of an externally heated, fluidized bed of Ottawa sand at wall temperature of 200, 400, and 600 °F , and average mass superficial air velocities of 82.5, 123.2, 170.3, and 217.5 pounds …
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Effects of indoor air quality on the occupant's health and productivity in an office building
Indoor Air Quality (IAQ) is an important parameter in deciding the status of Sick Bulding Syndrome (SBS). Poor IAQ which leads to SBS can result in adverse effect on the health of the occupant which causing lower productivity. This study was conducted to establish correlation between IAQ and …
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Improving the indoor air quality (IAQ) through application of the air cleaning technologies for offices building simulated in environmental chamber
Indoor air quality (IAQ) is very important issue in residential and commercial buildings, because human spend almost 90% of their life indoor. IAQ problems effect on the health of the occupants, and lead to reduction of the efficiency and output in workplaces. The main objective of this study is to …
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Use of a convective emission chamber to study particle resuspension
… chamber was developed to deliver a uniform air flow across the source surface and allow control at different levels of air velocity (0-0.5 m/s), turbulent intensity (5-40%), temperature (15-30$\sp\circ\rm C),$ and relative humidity (30-80%). Particle resuspension rates were measured with a …
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Concentration And Velocity Fields Throughout The Flow Field Of Swirling Flows In Gas Turbine Mixers
Air velocity and fuel concentration data have been collected throughout the flow fields of two gas turbine mixers in an effort to better understand the mixing of fuel and air in gas turbine mixers. The two gas turbine mixers consisted of an annular flow profile and incorporated swirl vanes to …
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Scaling and Performance of a Device for Fluidized Bed Entrainment Reduction
… were made of the particulate mass flux and gas velocity in the dilute phase. A probe was developed which determined the particle mass flux by counting electrical pulses produced when particles collided with a metal sensor placed in the flow stream. Air velocity was measured with a rugged hot …
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Investigation of Fluid Flow in Grinding using LDA Techniques and CFD Simulation
… of the rotating grinding wheel. Studies on air scraper and shoe nozzle application are also presented. Laser Doppler Anemometry (LDA) was employed to obtain a basic understanding of the flow velocity profile in the region close to the grinding contact zone in a low speed grinding system and …
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Wind wave tank for experimental investigation of momentum and enthalpy transfer from the ocean surface at high wind speed
… aspects of a tropical storm are simulated. The air velocity inside the annular tank is comparable to that of hurricane. However, the three dimensionality of the tank obscures the quantitative comparison between experiments and actual conditions over the surface of the ocean at high wind speeds. …
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Enhancing indoor air movement through roof design: a process of increasing thermal comfort in hot humid region housing
… therefore, is not only important, but the velocity of air that gets into the living area is crucial. Various ways of creating negative pressure (a process of increasing the interior air speed) are examined. The performance of roof types with different horizontal openings in enhancing …
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Computational fluid dynamics (CFD) simulations of temperature distribution in traditional and automated dairy buildings under changing climate
… weather patterns increase heat stress in modern dairy systems, driving higher ventilation demands and enhanced energy consumption. While free stall barns often rely on mechanical ventilation to ensure cow comfort, calf housing systems often lack an effective ventilation system, exposing young …
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Heat transfer between a shallow fluidized bed and a single horizontal tube immersed in the bed
… increased monotonically with increasing air velocity when the tube was located in the jet region, and the heat transfer coefficient increased when a distributor which induced a deeper jet penetration was used. However, the erosion problem and the relatively high pressure drop across the …
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An evaluation of the entrance requirements at Radford College
… increased monotonically with increasing air velocity when the tube was located in the jet region, and the heat transfer coefficient increased when a distributor which induced a deeper jet penetration was used. However, the erosion problem and the relatively high pressure drop across the …
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