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 180 for “"Heat loss"”.
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Heat loss in MHTGR upper plenum
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1991.
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Soil thermal properties and heat loss from buried pipes
… means are available such as insulation, electric heaters, and recirculation. Proper application and use of these heating methods requires a knowledge of the heat loss from buried pipes under diverse conditions. The heat loss can be estimated by various theoretical equations provided the thermal …
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Heat loss and hydrothermal ciruculation due to sea-floor spreading.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Science, 1974.
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On the mechanisms of heat loss beneath continents and oceans
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1981.
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Direct Quantitation of Heat Loss in Human Subjects Using Infrared Thermography
… temperature. This value is one variable used in heat loss equations which permits computation of radiant, convective, evaporative and total heat losses from subjects. The portable, non-contact, non-invasive nature of the IRT system makes it adaptable for use outside of the research setting. Heat …
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Detecting sources of heat loss in residential buildings from infrared imaging
… to determine the most common sources of heat loss during the winter in residential buildings. 135 houses in the greater Boston and Cambridge area were photographed, stitched, and tallied to characterize nine major causes of heat loss: window frames, window surfaces, window cracks, …
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Heat loss from the upper airways and through the skull: studies of direct brain cooling in humans
… to arterial blood, the human brain is cooled by heat loss through the skull and heat loss from the upper airways. It is these two mechanisms of heat loss which are the subject of this thesis. The initial research aim was to find out if restoring ‘normal’ airflow through the upper respiratory …
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The Contribution of Body Morphology to Individual Variability in the Thermoregulatory Responses to Exercise, and the Effect of Altered Skin Blood Flow on Heat Loss Potential
… and the influence of skin blood flow on heat loss potential during severe heat stress. Study 1 investigated whether unbiased comparisons of changes in rectal temperature (ΔTre) should be compared at a fixed absolute rate of heat production (Hprod; W) or a fixed Hprod per unit mass (W/kg), …
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Three-dimensional modelling of heat transfer from slab floors
Earth-coupled heat transfer processes have been recognized in recent years as a potential source of significant energy savings in both conventional and earth-sheltered designs. Because of the complexity of the building/soil/atmosphere interaction, however, important aspects of earth-coupled heat …
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A Model of Transient Heat Transfer in a Packed Bed of Alumina Particles
… study seeks to develop a robust system-scale heat transfer model for a sensible heat storage system. A novel mechanism to simulate axial dispersion and heat loss from the boundary of the sensible heat system to the environment is introduced. The most challenging topics to develop a robust heat …
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Phenotypic variation and thermoregulation of the human hand
… function in thermoregulation through radiative heat loss. Theoretically, the capacity for heat loss may be influenced by hand and digit proportions, but the extent to which these proportions influence the hand’s radiative properties remains under-investigated. Although hand morphology is highly …
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Modelling of microgravity ignition phenomena
… and Le is Lewis number. For flame balls, the heat loss mechanism necessary for stable solutions is the radiation from burnt gas. If heat loss is less than quenching value, there are two stationary solutions, but the small branch solution is always unstable to the one dimensional disturbances …
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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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Dropouts from community colleges: path analysis of a national sample
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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Investigation of the Light Emitters in the Aluminum - Water Reaction
… of the relative importance of the radiative heat transfer was a primary objective of this study. An estimate of the radiative heat loss at atmospheric pressure was obtained by numerically integrating the spectral intensity over wavelength from 300 nm to 800 nm. Comparison of the energy lost …
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Characterising global implications of water and energy consumption for residential showering
… of water and energy consumption of showers: heat loss from DHWS pipes, DHWS configuration, and global coverage of existing studies. To overcome methodological limitations in existing literature and address the aims of the thesis, multiple models and data sources were applied at varied scales …
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Sol-Clad-Siding and Trans-Lucent-Insulation : curtain wall components for conserving dwelling heat by passive-solar means
A prototype for a dwelling heat loss compensator is introduced in this thesis, along with its measured thermal performance and suggestions for its future development. As a heat loss compensator, the Sol-Clad-Siding collects, stores, and releases solar heat at room temperatures thereby maintaining a …
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