Browsing Solar Energy Laboratory MS and Ph.D Theses by Subject "University of Wisconsin--Madison. College of Engineering."
Now showing items 23-42 of 80
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Fluid Property Effects on Spray Cooling: An Experimental and Numerical Study
(University of Wisconsin-Madison, 2006)Spray cooling is a process where liquid is atomized into droplets and sprayed onto a surface that is hotter than the saturation temperature of the fluid. The droplets impact the surface and spread, causing a thin liquid ... -
General Regression Neural Network for Technical Use
(University of Wisconsin-Madison, 1995)The world energy consumption increases every year. With more countries becoming industrialized nations it is to be expected that the increase in energy consumption will become faster in future. This increase results ... -
Heat Transfer and Film Thickness Characteristics of Spray Cooling with Phase Change
(University of Wisconsin-Madison, 2004)Two test facilities were used to study the characteristics and method of spray cooling. Spray cooling is a process that delivers liquid droplets from an atomizer to a surface that is hotter than the saturation temperature ... -
High Performance in Low Flow Solar Domestic Hot Water Systems
(University of Wisconsin-Madison, 1997)Low-flow solar hot water heating systems employ flow rates on the order of 1/5 to 1/10 of the conventional flow. Low-flow systems are of interest because the reduced flow rate allows smaller diameter tubing, which is ... -
High-Temperature Refrigerated Warehouse Operation under Real-Time Pricing of Electricity
(University of Wisconsin-Madison, 2003)Refrigerated warehouses play an important link in the storage of food products throughout the year under conditions specially suited to prevent their decay. In doing so, refrigerated warehouses serve as an indispensable ... -
Impact on a Utility of an Ensemble of Solar Domestic Hot Water Systems
(University of Wisconsin-Madison, 1994)The benefits to a utility and to the environment of the installation of a large number of solar domestic hot water (SDHW) systems are identified and quantified. The environmental benefits of SDHW systems include reduced ... -
Improvement and Validation of a Model for Photovoltaic Array Performance
(University of Wisconsin-Madison, 2004)The use of photovoltaic cells has increased in the last few decades as their manufacturing cost has decreased and as people have become more concerned about energy use. Designers need a reliable tool to predict energy ... -
Investigation of Alternative Defrost Strategies
(University of Wisconsin-Madison, 2004) -
IR Enchange Between a Solar Collector with Plastic Glazing and the Sky
(University of Wisconsin-Madison, 2000)Two types of the absorption chillers, the single and half effect cycles, can operate using low temperature hot water. The advantage of the single effect over the half effect cycle is the higher COP but the single ... -
Life Cycle Performance Evaluation of an Air-Based Solar Thermal System
(University of Wisconsin-Madison, 2000)Performance at the McKay center after 22 years of operation was characterized through experimental measurements of component parameters. Effects of the component parameters on systems level performance was evaluated ... -
Local Heating During Electron Beam Patterning of Lithography Masks
(University of Wisconsin-Madison, 1998)The semiconductor industry is constantly seeking to improve the performance of integrated circuits by drastically increasing the density and reducing the pattern feature size. Accurate patterning of advanced lithography ... -
Local Liquid Velocity Measurements in Horizontal, Annular Two-Phase Flow
(University of Wisconsin-Madison, 2004)Two-phase annular flow is commonly used in both commercial and industrial heat transfer; however, we do not yet possess a thorough understanding of the nature of the fluid. Most analytical annular two-phase models are ... -
Localized Resist Heating Due to Electron-Beam Patterning During Photomask Fabrication
(University of Wisconsin-Madison, 2001)As the semiconductor industry continues to shrink the size microelectronic components, sources of critical dimension error that were unimportant in the past have surfaced, and must be resolved. Among these errors is ... -
Low Firing Temperature Absorption Chiller System
(University of Wisconsin-Madison, 2000)Two types of the absorption chillers, the single and half effect cycles, can operate using low temperature hot water. The advantage of the single effect over the half effect cycle is the higher COP but the single ... -
Model and Design of an Air-Cooled Thermal Management System for an Integrated Motor/Controller
(University of Wisconsin-Madison, 2005)The use of a remote power supply for conventional induction-type electric motors requires that very high frequency, high power pulse-width modulated signals be transmitted through cables over a significant distance. ... -
Model and Test of an Actively Controlled Cryogenic Micro Valve
(University of Wisconsin-Madison, 2006)Future NASA missions require cooling of large optical structures, cryogen storage systems, and instrument chambers and therefore cooling must be applied in a controlled and efficient fashion over a large spatial extent. ... -
A Model-Based Fault Detection and Diagnosis Methodology for HVAC Subsystems
(University of Wisconsin-Madison, 1999)The existence of faults in Heating, Ventilating, Air-Conditioning and Refrigerating (HVAC&R) systems plays a significant role in the degradation of comfort levels for building occupants on one scale, and the degradation ... -
The Modeling of a Natural Convection Heat Exchanger in a Solar Domestic Hot Water System
(University of Wisconsin-Madison, 1994)The use of simulations can greatly aid in optimizing the design of natural convection heat exchangers (NCHEs) in solar domestic hot water (SDHW) systems. Fraser et al. (1992) presented a NCHE model that is used in the ... -
Modeling of Heat Transfer in Buildings
(University of Wisconsin-Madison, 1987) -
Modeling of Rooftop Packaged Air Conditioning Equipment
(University of Wisconsin-Madison, 1999)A large amount of the operating costs of a building is determined by the energy requirements and the fuel consumptions of its heating, ventilation and air conditioning system (HVAC-system). Simulation programs are used ...