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.
Results
Showing 1 to 11 of 11 for “"wet surface"”.
-
Design of Wet Surface Traffic Signal Timing Change Intervals
… time stopping behavior. Rainy weather and wet pavement surface conditions may result in changes in both driver behavior and vehicle performance. The research presented in this thesis quantifies the impact of wet pavement surface and rainy weather conditions on driver perception-reaction …
-
Experimental study of the thermal-hydraulic performance of a brazed aluminum heat exchanger under wet-surface conditions
… heat exchanger is studied experimentally for wet-surface conditions. The test specimen is a brazed-aluminum, louvered-fin heat exchanger. The total capacity, pressure drop and water drainage behavior under various water usage rates and air face velocities are explored and compared to data from …
-
Predicting the Air-Side Thermal -Hydraulic Performance Characteristics of Flat-Tube Louver-Fin Heat Exchangers Under Dry and Wet Conditions
… for flat-tube heat exchangers under partially wet conditions, and new air-side performance correlations are presented for both dry- and wet-surface conditions. Correlations between the Colbum j or f factors and the Reynolds numbers are developed in the conventional way and compared to …
-
Longitudinal Vortex Generation to Enhance the Performance of Compact Heat Exchangers: Flow and Heat Transfer Behavior for Plain and Interrupted Fins
… pressure drop performance under both dry- and wet-surface conditions were determined through wind-tunnel experiments. Average heat transfer enhancements of 21% for dry conditions and 23% for wet conditions are achieved for 200≤ Re≤550, with a pressure drop penalty smaller than 7%.
-
Sensing the human alpha rhythm using a non-contact electroencephalographic (EEG) electrode
… in the brain and are typically recorded using wet surface electrodes that make ohmic contact with the scalp surface using an electrolyte gel. Unfortunately, wet electrodes are intrusive to the user, problematic for EEG studies requiring high spatial resolution, and are unsuitable for …
-
Ethanol Mist to Control Salmonella enterica serovar Newport on Fresh Tomato and Cantaloupe Surfaces
… mist to reduce Salmonella populations on the surfaces of tomatoes and cantaloupes. Ethanol (70%) mist was applied to whole tomatoes and cantaloupe rind plugs using a Biomist sanitation system, which uses CO2 as a carrier gas to spray vapors through a fine droplet spray nozzle. Fresh red …
-
Air-side condensate management: Drainage channels in heat exchangers
Condensate on the air-side surface of flat-tube air-cooling heat exchangers can result in several adverse effects on the overall thermal-hydraulic performance. In order to improve the performance of compact heat exchangers under wet-surface conditions, promoting the drainage of condensed water is …
-
Metal foams as novel materials for air-cooling heat exchangers
… engineering applications. Due to their large surface-area-to-volume ratio, tortuous flow path, and relatively high thermal conductivity they are being considered for a range of heat transfer applications. In this experimental study, open-cell aluminum metal foam is considered as a replacement …
-
MOCVD GaN sensorių su chemiškai modifikuotu paviršiumi tyrimai /
… The main goal of this thesis was to modify GaN surface with wet etching method while using acidic (H3PO4) and basic (KOH-ethylene glycol) solutions, then use various analysis techniques to understand the defects present in the material and how they affect the electrooptical properties. The …
-
Augmentation of Jet Impingement Heat Transfer on a Grooved Surface Under Wet and Dry Conditions
… experiments were performed on flat and 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 …
-
Microwave Remote Sensing of the Greenland Ice Sheet: Models and Applications
… data, (2) the microwave signature of the snow surface, (3) detection of snow melt, and (4) classification of snow melt. The results are applicable for identifying geophysical properties of the snow surface and monitoring changes on the ice sheet in relation to melt duration/extent, …