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 20 of 24 for “"head loss"”.
-
The head loss characteristics of various control and check valves
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Sanitary Engineering, 1954.
-
The determination of the friction factor for new 6-inch aluminum tubing and head loss in elbows and sprinkler-pipe couplers
Thesis (M.S.)--Michigan State College of Agriculture and Applied Science. Dept. of Agricultural Engineering, 1950
-
Investigation of calcium orthophosphate chemical effects in a post-LOCA nuclear reactor containment
… from NUKON fiberglass in containment following a Loss of Coolant Accident (LOCA) could lead to the formation of chemical precipitates that in turn cause head-loss increase due to filtering through a fibrous debris accumulation at the sump pump screens. Experiments conducted on the bench scale show …
-
A Study on the Mechanical Characteristics of a Fiberglass Bed Formed During a Loss-of-Coolant-Accident at a PWR Nuclear Facility
Following a Loss-of-Coolant-Accident (LOCA) in one of the primary coolant lines in the containment building of a PWR Facility, it is possible that fiberglass pipe insulation could be dislodged and washed down to the sump pool. This fiberglass could collect into a bed' and cause blockage on the sump …
-
Limitations on tidal-in-stream power generation in a strait
… are dependant on the relationship between head loss and velocity. If head loss increases with the square of the velocity, a maximum of 38% of the total fluid power may be extracted; this maximum decreases to 25\% if head loss increases linearly with velocity. Using these values, the …
-
Part I: Geostatistical Interpolation of Rain Fields Using Radar Estimates and Gauge Observations: Algorithm Design and Automation; Part II: Energy Dissipation in Fluid Flows and Wave Transformation by Porous Barriers and Submerged Cavities
… a study watershed. The second part studies the head loss induced by fluids passing through porous screens and the wave transformation caused by porous barriers as well as submerged cavities. In the first part of the study, the regression-kriging (RK) and merging spatial interpolation techniques …
-
Removal of soluble iron and manganese from groundwater by chemical oxidation and oxide-coated multi-media filtration
… treatment because of the reduced rate of head loss. Further experiments, without the use of KMnO₄ or greensand, equally removed manganese by adsorption and oxidation onto oxide-coated media; however, the treatment process resulted in reduced head loss and oxidant costs. Results from this …
-
HYDRAULIC PERFORMANCE OF GEOSYNTHETIC LINERS IN TAILINGS STORAGE FACILITIES
… tailings homogeneity, applied stresses, water heads, subgrade grain-size distributions and surface irregularity, and a geotextile filtration layer on leakage and piping through the GMB defect are evaluated. It is shown that increasing the fines content from 0 to 100%, the involvement of the …
-
An Innovative Design for a Separate Sewer System
… hydraulic performance of the new manhole, the head loss coefficient and pattern of shockwaves were studied for both manholes (new and conventional), under the same conditions, using independent, dimensionless parameters for each manhole. The new manhole generates higher head losses, about twice …
-
Acoustic monitoring of hydraulic resistance in partially full pipes.
Hydraulic losses in sewer pipes are caused by wall roughness, blockages and in-pipe sedimentation. Hydraulic resistance is a key parameter that is used to account for the hydraulic energy losses and predict the sewer system propensity to flood. Unfortunately, there are no objective methods to …
-
The effect of die geometry on extruded paste flow for continuous production of pharmaceutical tablets
… of the wet extrusion is driven by the pressure head generated by the torque of the screws; the minimum pressure head is dictated by the head loss across the exit die. Since the API powder blend and ethyl acetate solvent form a highly filled suspension paste, the liquid phase tends to flow at a …
-
Sediment transport in storm sewers
… on these relationships were in turn examined. Head loss formulae acquired by past researchers were slightly modified to suit the range covered by the experimental data. The relationships developed in this research were subsequently applied to sewer design. These were later compared to the …
-
Hydraulic conveyance of solid capsules
… hydraulic mean radius for analysing the friction head loss in eccentric annuli is presented. There have been numerous investigations concerned with friction head losses in concentric annuli. However, the correlation presented in this thesis is simpler than those given by other investigators and …
-
Development of Soluble Manganese Sorptive Contactors for Enhancing Potable Water Treatment Practices
… as sand or anthracite, could produce prohibitive head loss in a sorptive contactor. The focus of this research project was to show that Mn could be effectively removed via adsorption onto larger media (2.0-6.4mm) at hydraulic loading rates of 16-24 gpm/ft², thus producing less head loss and …
-
EXPERIMENTAL STUDIES OF THE CHEMICAL EFFECTS OF ZINC-BEARING MATERIALS FOLLOWING A LOSS-OF-COOLANT ACCIDENT IN A PRESSURIZED WATER REACTOR
… cooling systems (ECCS) sump strainers during a Loss-of-Coolant Accident (LOCA). Potential contributors to the debris loading include latent dirt, fiberglass insulation, paints, epoxies, and chemical products which form when containment surfaces interact with the released reactor coolant. …
-
Multiobjective Reservoir Optimization Using Genetic Algorithm
… energy and secondary energy and uses a nominal head loss due to the friction. The second Matlab code allocates the storage volumes for firm energy and secondary energy by considering hydropower production by individual turbines and the true head losses for each turbine. In addition to these two …
-
Measuring Energy Efficiency of Water Utilities
… might skew the results, such as topology, water loss and raw water quality. We propose that benchmarking metrics should be always used within a particular context for each specific utility being analyzed. A complementary score (Thermodynamic Score) was developed to provide context on how energy …
-
A Pilot-scale Evaluation of Soluble Manganese Removal Using Pyrolucite Media in a High-Rate Adsorptive Contactor
… of the contactor also resulted in significant head loss accumulation in the upper portion of the contactor column, most probably due to MnOx(s) deposition on the media and partial blockage of contactor void spaces. Media fluidization was necessary to address this operational issue.
-
Turbulent flow in a porous tube with wall suction.
… percent). Analysis of the experimental friction loss data obtained for small diameter porous tubing in this study confirmed that the Colebrook and White (C-W) equation is a very accurate predictor of the friction factor for porous tubing with small diameter size and Reynolds numbers less than …
Page 1 of 2