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 72 for “"Heating Systems"”.
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Temperature control strategies for radiant floor heating systems
A dynamic model of a radiant floor heating (RFH) system useful for control analysis is developed. The overall model consists of a boiler, an embedded tube floor slab and building enclosure. The overall model was described by nonlinear differential equations, which were solved using finite numerical …
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Physics of RF heating systems on proto-MPEX
… be controlled independently with separate RF heating systems. This thesis focuses on the electron density production system and the ion heating systems on Proto-MPEX and their viability for MPEX. The electron density production on Proto-MPEX is accomplished by a helicon plasma source. Helicon …
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Modelling and predictive control techniques for building heating systems
… method for more efficient control of building heating systems. Though a significant performance improvement can be achieved with an MPC strategy, the complexity introduced to the commissioning of the system is often prohibitive. Models are required which can capture the thermodynamic properties …
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Computer simulation and optimisation of solar heating systems for Cyprus
… and simulation of solar water and space heating for Cyprus, and the investigation of the factors concerning the optimisation of such systems. Further a number of design criteria, which can be used by consultants and designers of solar heating systems, have been established. Five solar …
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A quantitative design and analysis of magnetic nanoparticle heating systems
… an alternating magnetic field act as localized heating sources due to various loss mechanisms. This effect has been extensively investigated in hypothermia studies over the past decades and has recently been applied at the molecular level to control the dehybridization of DNA molecules. As a …
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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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Automating the process of drawing floor heating systems on to floor plans
Floor heating is a common method for space heating in Iceland and requires authorization from building regulatory authorities in the form of a permit before integration. The permit is only provided if necessary documentation is admitted, a design of the floor heating system along with technical …
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The fundamentals of two-phase flow in wet domestic central heating systems
… on the flow line of domestic wet central heating systems. To date, no data and theoretical models predicting the two-phase flow characteristics in domestic wet central heating systems are available in the open literature. This gap in literature has prevented essential design improvements …
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A methodology for thermal analysis and predictive control of building envelope heating systems
A heating system integrated into the building envelope, such as a floor radiant heating system, is defined as a building envelope heating system (BEHS). Thermal mass usually integrated with such a heating system can be utilized to lower both peak loads and operating costs and to reduce room …
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Heat source transfer functions and their application to low temperature radiant heating systems
Radiant heating systems have been identified by segments of the HVAC industry as technology which can potentially reduce the energy consumption of buildings. As a result of higher mean radiant temperatures within radiantly heating structures, it has been hypothesized that these systems can provide …
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Development and Demonstration of a Performance Test Protocol For Radiant Floor Heating Systems
The Radiant Heating markets - especially, the hydronic segment - are growing rapidly in North America due to homeowners' increasing demand for comfort and the steady rise in residential construction. Radiant systems are promising technologies for energy saving in commercial and residential building …
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Analysis of steam and hydronic compartment heating systems aboard U.S. Coast Guard 140 foot WTGB class cutters
The compartment heating system on the U.S. Coast Guard's Icebreaking Tug (WTGB) class cutter was studied to determine heat transfer performance characteristics of existing heat exchangers when used with circulating hot water vice steam. Characterizations such as Reynolds number vs. Colburn j factor …
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A Techno-Economic Investigation on Insulating Glass Solar Thermal Flat-Plate Collectors for District Heating Systems in Europe
… of solar thermal collector arrays into district heating networks has emerged as a global trend with the objective of decarbonising heating supply. To accelerate the expansion of this renewable heating technology, it is advantageous to achieve significantly lower heat generation costs compared to …
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Predictive Thermal Modeling and 3E Analysis of Solar Water Heating Systems: Employing A Hybrid Lattice Boltzmann Based Method and Experimental Investigation
… capacity for the application in solar water heating (SWH) systems. Several factors including the collectors’ ability to passively track the sun during operation time, significant reduction of heat loss to the ambient due to the vacuum layer between the inner and outer tubes, and low …
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A case for electrifying heat in end-use residential sector towards carbon-free buildings
Space and water heating account for nearly two-thirds of energy consumption in U.S. homes, and a large contributor to energy costs of end-use residential dwellings. Most home heating systems in the United States are fueled by fossil fuels - natural gas and fuel oil (heating oil) - representing more …
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