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Now showing items 981-990 of 993
Rehabilitating missing energy use and weather data when determining retrofit energy savings in commercial buildings
(Texas A&M University, 1999)
This thesis evaluates four methods for rehabilitating short periods of missing data. Single variable regression, polynomial models, Lagrange interpolation, and linear interpolation models are developed, demonstrated, and ...
A new three-control-volume theory for circumferentially-grooved liquid seals
(Texas A&M University, 1994)
Circumferentially-grooved seals are used in centrifugal pumps to reduce leakage flow. Florjancic (1990) developed an analysis using a partition of the seal into three control volumes, bulk-flow theory and Hirs' lubrication ...
Design methodology for tracking certain and uncertain non-minimum phase systems
(Texas A&M University, 1997)
A design methodology is developed for obtaining tracking controllers for non-minimum phase systems. The discussion centers around a solution for the error equation E(s) = [1- H(s)] Yd(S)'Tracking error is eliminated by ...
Continuous equal channel angular extrusion of glassy polymers
(Texas A&M University, 1997)
This thesis presents an analysis of Equal Channel Angular Extrusion (ECAE) of polymers, a unique process that controls the state of strain and molecular network orientation during a solid state extrusion. The goal of this ...
Development and application of a procedure to estimate overall building and ventilation parameters from monitored commercial building energy use
(Texas A&M University, 1997)
This thesis proposes and validates a simplified model appropriate for parameter identification and evaluates several different inverse parameter identification schemes suitable for use when heating and cooling data from a ...
Effects of the primary passage on the flow through the secondary passage of a shrouded-impeller pump
(Texas A&M University, 1994)
A method for determining the turbulent flow through the leakage passage in rotating machinery has been enhanced to allow for the modeling of complex multiplyconnected flow domains such as that of the combined primary and ...
Effect of additives on the reduction of nitrogen oxides using cyanuric acid
(Texas A&M University, 1994)
The addition of cyanuric acid to hot exhaust flows has been shown in the past to selectively remove much of the nitric oxide (NO) emitted from combustion sources. Known as the RapreNOx process, this approach to pollution ...
Large-scale experimental investigation of flow characteristics in labyrinth seal geometries
(Texas A&M University, 1994)
order to determine the flow characteristics and leakage resistance properties of advanced labyrinth seals. A unique water test facility is used to acquire leakage resistance measurements for two-dimensional, planar models ...
Imbalance response of a rotor supported on a floating ring fluid film bearing
(Texas A&M University, 1999)
Turbochargers are commonly used to increase the power output and efficiency of internal combustion automotive engines. Conventional turbocharger rotors are usually supported on floating ring journal bearings (FRBs) running ...
Method of mechanism synthesis by hybrid genetic algorithm
(Texas A&M University, 1999)
The path synthesis problem for mechanical linkages still presents problems for engineers, although it has been examined for more than two centuries. This research approached the design problem as one of creating a ...