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 11 of 11 for “"wet-bulb temperature"”.
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General equation for predicting cooling tower approach temperatures at lower wetbulbs
Cooling tower approach temperature is the difference in leaving water temperature and entering air wet-bulb temperature. Cooling tower manufacturers describe the design capacity with water volumetric flow, entering water temperature, leaving water temperature, and entering air wet-bulb temperature. …
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A STUDY ON THE PHYSICS OF ICE ACCRETION IN A TURBOFAN ENGINE ENVIRONMENT
… empirically identified the effects of pressure, temperature and relative humidity on the equilibrium surface temperature and the characteristic ice that accretes. In these cases with freezing fraction and impinging particle temperature as experimental unknowns, the on-set of ice accretion on an …
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Improving Health and Safety at Surface and Underground Mines by Implementing Emerging Technologies Coupled With Geotechnical and Climatic Modeling
… cooling system, a comparison and analysis of the wet-bulb temperature and the dry-bulb temperatures of the ventilating air at the bottom of an intake shaft using two modeling software packages, VentsimTM and ClimsimTM is completed. The comparison shows the consequences and importance of taking …
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Increasing the Heat Transfer on a Grooved Surface Under Dry and Wet Conditions by Using of Jet Impingement
… from the surface instead of cooling air to near wet-bulb temperature.
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Development of a system that can quantify the level of heat strain experienced by underground mine workers in real-time
… time is most sensitive to changes in the dry-bulb temperature. The dry-bulb temperature, wet-bulb temperature, and clothing resistivity are exponentially connected to changes in the continuous work time. The continuous safe work time of a worker is least affected by changes in airflow velocity …
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Modelling the microclimate in a conical bottomed circular grain silo
… form are presented for the pressure, velocity, temperature, moisture content, absolute humidity, wet bulb temperature, dry matter loss, seed viability and pesticide decay. Significantly, a novel configuration of an annular aeration duct and a traditional linear aeration duct in farm silos have …
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Evaluation and Use of Stream Temperature Prediction Models for Instream Flow and Fish Habitat Management
… and RQUAL (Tennessee Valley Authority) stream temperature prediction models were evaluated. All models had high predictive ability with the majority of predictions, >80% for Back Creek (Roanoke County, VA) and >90% for the Smith River tailwater (SRT) (Patrick County, VA), within 3°C of the …
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A study of the drying of single droplets in free-flight
… (sucrose, potassium sulphate) over a range of temperatures of 37oC to 97oC, initial concentrations of 5 to 40wt/wt% , and initial drop sizes of 2.8 to 4.6mm. Drop behaviour was recorded photographically and dried particles were examined by Scanning Electron Microscopy. Correlations were …
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Augmentation of Jet Impingement Heat Transfer on a Grooved Surface Under Wet and Dry Conditions
… grooved surfaces with the surface at a constant temperature. For the flat surface, power and temperature measurements were performed to obtain convection coefficients under a wide range of operating conditions such as jet speed, orifice to surface stand-of distance, and open area percentage. …
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A study of the variable factors controlling spray drying
… fact that the particle is not heated above the wet bulb temperature of the drying medium, make the process particularly adaptable to drying heat sensitive materials. Although, the theory for spray drying is similar to that for other drying processes, it is complicated by the aerodynamics of …
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Spatially explicit humid heat stress projections in urban environments under climate change
… through local and regional studies using air temperature and the urban heat island effect, a phenomenon in which an urban area is hotter than its rural surroundings. Here, I aim to elucidate the impacts of humidity on global patterns of urban humid heat stress and spatially explicit …