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 243 for “"hot water"”.
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Hot Water Drying of Subbituminous Coal
… coal when it was heated under pressure in a water slurry. This method of drying is called hot water drying. The temperature range investigated was from 260 C to 360 C. Two particle sizes were studied, namely, 0.4699 cm and 0.0505 cm mean particle diameters. The average initial moisture …
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Flow of hot water through a rounded orifice
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1941.
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Sorghum hot water extract : influence of grain physico-chemical characteristics
… considered for use as brewing adjuncts. Hot water extract describes the quality of the wort of an adjunct and depicts the amount of starch that was solubilised during mashing. The determination of hot water extract is expensive, laborious and time-consuming. The provision of a possible …
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A THERMO-ECONOMIC STUDY OF SOLAR COOLING/HOT WATER SYSTEMS
… performance could be improved by incorporating a water heating loop in the basic cooling system so that the collectors could be utilised for hot water production during such "idle" periods. Commercial applications for such hybrid systems exist in installations such as hotels and hospitals where …
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Estimating residential hot water consumption from smart electricity meter data
Despite the fact that residential water heating is among the most energy-intensive aspects of the water sector, domestic hot water use is often poorly quantified. However, water-related energy savings in the residential sector are possible from the implementation of energy-efficient water heaters. …
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Insurance and the Anthropocene: like a frog in hot water
This thesis explores the relationship between the commercial insurance industry, global environmental change (GEC) and what Beck (1992; 1999) termed the 'risk society'. In recent decades, there have been growing concerns that many of the risks impacting contemporary society have undergone …
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High resolution time-series modeling of domestic hot water heating systems
This thesis evaluates domestic water heating systems in conjunction with energy saving technologies such as solar water heating, drain water heat recovery, and heat pump water heating. Five dynamic models are developed using Matlab Simulink® with a time-step of one minute. Using minute resolution …
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Pressurized Hot Water and DTPA-Sorbitol, Viable Alternatives for Soil Boron Extraction
Pressurized hot water and DTPA-Sorbitol are two relatively new soil boron (B) extraction methods with potential to replace the cumbersome hot water extraction. The objective of this research is to produce data in support of acceptance or rejection of these two alternative B extractions. The three …
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Experimental investigation of nighttime losses from ICS solar domestic hot water systems
The nighttime losses from an integral collector storage (ICS) system were investigated. The significance of the sky temperature, wind speed, and ambient temperature on the losses were examined. Outdoor data was taken on several nights to characterize the thermal performance of an ICS system under …
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In Hot Water: Thermal Acclimation is Insufficient to Save Corals in the Anthropocene
<p>Scleractinian corals are animal partners in exquisite symbioses with a suite of algal, microbial, fungal and viral associates comprising miniature ecosystems collectively referred to as a holobiont. In recent decades, ocean warming has jeopardized the delicate balance of the very symbioses that …
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Sustainability of Residential Hot Water Infrastructure: Public Health, Environmental Impacts, and Consumer Drivers
Residential water heating is linked to the primary source of waterborne disease outbreaks in the United States, and accounts for greater energy demand than the combined water/wastewater utility sector. To date, there has been little research that can guide decision-making with regards to water …
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Investigation of standard test procedures for integral storage solar domestic hot water systems
… integral storage collectors for solar domestic hot water systems. These tests were performed under a variety of ambient conditions and irradiance levels, both with and without forced circulation and noontime hot water draws. An analytical model was developed to predict the thermal performance of …
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Miscanthus conversion to ethanol: Effect of particle size and pretreatment conditions for hot water
… sieve openings. Ground samples were subjected to hot water, dilute acid or dilute ammonium hydroxide pretreatments. Sugar yields from enzyme hydrolysis was used to measure pretreatment e ciency. Geometric mean diameters decreased with screen size: 0.08 mm sieve screen (56 um) followed by 2.0 mm …
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Performance of a multiple stage hot water pretreatment on sugarcane bagasse and its economic analysis
… capital investment. In this thesis, a two-stage hot water and disk milling pretreatment combined with use of a commercial xylose-glucose cofermenting Saccharomyces yeast strain is evaluated for advanced ethanol production. Fermentation of 10% solids resulted in a final ethanol titer of 36.4 g/L …
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Diffusion strategy for residential solar hot water systems in the U.S. : technical, economic, and stakeholder analyses
Thesis (M.S.)--Massachusetts Institute of Technology, Technology and Policy Program, 1998.
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