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 20 of 36 for “"cold weather"”.
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Energy Efficiency in Cold-Weather High-End Custom Homes
… was to create energy efficiency benchmarks for cold-weather, high-end custom homes and evaluate current building practices. A list of energy-efficient products and practices was created through a review of relevant literature. A group of expert builders was formed into a committee to help …
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CHALLENGES IN TRACKING THE DEGRADATION OF LANDFILLED MSW THROUGH LABORATORY AND NUMERICAL MEANS
… inhibition of biological decay occurring in cold weather climates. To meet these research objectives a novel cold weather landfill modelling framework, the python finite difference (PFD) model was proposed. The PFD modeling framework allows for the coupled simulation of thermal, biological, …
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Evaluation of the Performances of Electrically Heated Clothing
Cold weather garments are necessary for people who are exposed to cold environments (below -5 °C). The weight and bulkiness of such a cold weather clothing ensemble may limit human activity and reduce the productivity. In order to solve these problems, a slim garment with a built-in heating element …
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Evaluation of trailer thermal environment during commercial swine transport
… by trailered pigs during hot, mild, and cold weather, The National Pork Board commissioned this observational study to evaluate the thermal environment during commercial pig transport when the trailer environment was managed according to a set of industry guidelines. The overall goal of …
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Framework for active solar collection systems
… were selected because they both represent a cold weather region; presenting a need for using solar energy for heating and hot water requirements. Moreover, the cold weather in Blacksburg is not as severe as in Minneapolis. Therefore, the two cases will result in different thermal loading …
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Optically transparent, thermally insulating and soundproofing (OTTIS) aerogel for high-efficiency window applications
… part of building envelopes, particularly during cold weather. Thermal losses in the U.S. from controlled indoor environments to outdoors climates account for $20 billion dollars in energy each year, signifying a need for more energy efficient windows. However, insulating windows represent a …
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The Effect of Tree Shade and Snowpack Cover on Pavement Surface Temperature
… of tree shade on pavement heat transfer during cold weather. A recent road project in Minnesota has resulted in increased interest in the balance of sun exposure andminimum pavement surface temperatures for winter road maintenance. This thesis provides an extensive literature review on tree …
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The killing of plant tissue by low temperature
… commonly accepted theory is that killing from cold results from the withdrawal of water from the protoplasm. The amount of water loss necessary to result in death varies with the different plants and different tissues. This paper studies the effects of cold weather on plant tissue, specifically …
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The Effect of Temperature on the Material Stiffness of Field Hockey Balls for Material Selection
… balls made of PVC breaking in half when hit in cold weather. Hockey ball manufacturers are interested in the effect of temperature on balls breaking to inform ball design and material selection. To test whether hockey balls are easier to break in cold temperatures, this study measured the …
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Technical and economic evaluation of triglyceride gasoline blends as an alternative fuel for diesel engines
… is highly viscous and has poor flow ability in cold weather. Consequently, it cannot be used in diesel engines without modification to the fuel system. Blending regular unleaded gasoline (10% by volume) to unrefined canola oil results in the specific gravity of the blend being similar to that of …
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Exploration of the Endothermic and Exothermic Reactions of Calcium Oxide and Magnesium Oxide and Design of a Vessel for a Thermochemical Heat Storage System
… to preheat the engine and/or the cabin in cold weather. The idea is to store surplus thermal energy and then release it on demand to heat a working fluid. The stored heat can be used to generate electricity after sunset or to meet the peak loads. These would lead to an improvement in energy …
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Selection of Prediction Methods for Thermophysical Properties for Process Modeling and Product Design of Biodiesel Manufacturing
… Also, to ensure the operability of biodiesel in cold weather, one needs to quantitatively predict three low-temperature flow properties: cloud point (CP), pour point (PP), and cold filter plugging point (CFPP). This article presents the results from a comprehensive evaluation of the methods for …
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Energy use in buildings and design requirements. The energy costs and financial costs of building materials, structures and space heating, the detailed patterns of use of heating systems in dwellings, and their interactions: their implications for design.
… input rate between the houses of a given type in cold weather in terms of hours of use of central heating window opening habits, and for warm air heating, the closing of outlet registers. It was also revealed that for the house types with gas-fired heating the number of hours of use of the central …
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Environmental and Climatic Constraints on Large-scale Camelina Production in Eastern Arkansas
<p>Camelina sativa is a cold weather crop that is typically grown in semi-arid environments in the Western United States, usually as a spring crop, but sometimes during the winter. Research analyzing climate data and soil hydrology is important to better understand the environmental and terrain …
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Improved seismic and thermal performance of low-income housing in Nepal
… risk for destructive seismic events and extreme weather patterns. A lack of resilient housing construction, combined with a loss of vernacular construction traditions, result in huge populations of low-income homeowners that cannot build homes that are safe and comfortable. Nepal exemplifies …
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Commercial Electric Vehicle Cabin Heating System Modelling and Optimization
… energy consumption of the vehicle during cold-weather operation.
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Cold-climate constructed wetland applications in Canada and Northern China and modeling applications in the Canadian Arctic using SubWet 2.0
… mechanisms of pollutant removal efficiency in cold-climate constructed wetlands (CWs) and investigates the benefits, standing and practicability of using these systems to treat wastewater in Canada and Northern China. Treatment efficiencies defined by the Canadian and Northern China experience …
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Predicting Obstructive Coronary Artery Disease in Patients Undergoing Coronary Angiography for Stable Angina
… pain precipitants (exercise, emotional stress, cold weather), hypertension, dyslipidemia, diabetes, smoking status, and family history of CAD were all predictive of the presence of obstructive CAD. In a model containing only these variables, there was good calibration and discrimination (average …
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A machine learning study of wind-driven runback/flow-off multiphase flows pertinent to aircraft icing phenomena
… processes of takeoff, cruising, and landing in cold weather conditions. The unsteady runback behavior of wind-driven runback water film (WDRWF) flows over aircraft surfaces has a significant impact on the aircraft in-flight icing process. Conventional theoretical/numerical methods cannot …
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The Effects of Limited Winter Food Availability on the Population Dynamics, Energy Reserves, and Feather Molt of the Swamp Sparrow
… challenges in temperate zone winters posed by cold weather coupled with food scarcity. These challenges are often assumed to occur, but are rarely experimentally tested. I hypothesized that the naturally occurring, lower abundances of food in temperate zone winters limit a bird's ability to …
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