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Showing 1 to 20 of 55 for “"thermal systems"”.
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Nanoscale thermal systems in subcritical region
… of the interfacial surface area. These systems are then analyzed to define their thermodynamic behavior by using a technique to minimize the Helmholtz free energy. It is also shown how this continuous phase change alters the behavior of nanoscale thermal systems in subcritical …
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Simulation Analysis of Thermal Systems and Components
Made available in DSpace on 2017-07-06T18:48:46Z (GMT). No. of bitstreams: 3 Jain_Gaurav_MS.pdf: 953226 bytes, checksum: 52039586ac0ab0ea104e4fb09ed9339a (MD5) Jain_Gaurav_MS_ABS.pdf: 57524 bytes, checksum: 4c06ddbaa3ee61ef8b2ac283371f0dd7 (MD5) license.txt: 4813 bytes, checksum: …
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A hierarchical control strategy for aircraft thermal systems
Aircraft systems present an interesting control problem given the fact that there exist multiple objectives, actuators, and physical dependencies throughout the system. For decades the onboard systems of aircraft have worked in isolation seeking to achieve their goals while giving little to no …
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New components for dynamic modeling of transient thermal systems
This work presents several novel components for the MATLAB Simulink® toolbox THERMOSYS™. The first component is a universal heat exchanger, which can behave either as an evaporator or a condenser as the refrigerant properties dictate. The second component is a liquid-to-solid heat exchanger, which …
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Bayesian-based simulation model validation for spacecraft thermal systems
… last several decades of space flight, spacecraft thermal system modeling software has advanced significantly, but the model validation process, in general, has changed very little. Although most thermal systems are successful, there is evidence of some model inaccuracy and thermal system …
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Tuning energy transport in solar thermal systems using nanostructured materials
Solar thermal energy conversion can harness the entire solar spectrum and theoretically achieve very high efficiencies while interfacing with thermal storage or back-up systems for dispatchable power generation. Nanostructured materials allow us to tune the spectral properties and heat transfer …
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Computer-aided optimal design for laminar and turbulent fluid-thermal systems
The finite-element method and the Newton-Raphson method are combined to investigate the momentum-, mass-, and energy-conservation equations for strongly coupled flow problems. Then the design sensitivities of the system response are computed and used in a numerical optimization algorithm to …
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Optimal design of thermal systems using geometric projection and topology optimization
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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Performance optimization of low-to-moderate temperature thermal systems: a multi-pronged investigation
… application purposes. Moreover, the use of thermal energy storage through incorporation of phase change material (PCM) to improve the functionality and heat transfer performance of different systems was studied. In chapter 1, the performance of a heat pipe evacuated tube collector (HPETC) is …
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Rapid, assured planning for safe operation of integrated power, propulsion, and thermal systems
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms
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Adsorption at the nanoparticle interface for increased thermal capacity in solar thermal systems
In concentrated solar power (CSP) systems, high temperature heat transfer fluids (HTFs) are responsible for collecting energy from the sun at the solar receiver and transporting it to the turbine where steam is produced and electricity is generated. Unfortunately, many high temperature HTFs have …
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Monitoring and anomaly detection in solar thermal systems using adaptive resonance theory neural networks
SHW systems are generally expected to last for at least 20 years with little or no maintenance. However, in many cases failures occur far sooner due to a variety of problems, many of which are undetected or detected long after the system has failed because the backup heater silently assumes the …
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A two-stage design framework for optimal spatial packaging of interconnected fluid-thermal systems
Optimal spatial packaging of interconnected subsystems and components with coupled physical (thermal, hydraulic, or electromagnetic) interactions, or SPI2, plays a vital role in the functionality, operation, energy usage, and life cycle of practically all engineered systems, from chips to ships to …
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Energy recovery at thermodynamic expansion and thermal boosting through convection in flat plate solar thermal systems.
… and lack of availability at nights. Therefore, thermal energy storage (TES) system can provide a viable solution to respond to varying levels of solar energy. Literature review indicated that phase change materials (PCM) based latent heat storage (LHS) systems are promising TES technique due to …
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Integrated design optimization methods for optimal sensor placement and cooling system architecture design for electro-thermal systems
DSpace SAF Submission Ingestion Package generated from Vireo submission #13273 on 2019-02-07 at 14:23:18
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Comprehensive Modeling of Novel Thermal Systems: Investigation of Cascaded Thermoelectrics and Bio-Inspired Thermal Protection Systems Performance
Thermal systems involve multiple components assembled to store or transfer heat for power, cooling, or insulation purpose, and this research focuses on modeling the performance of two novel thermal systems that are capable of functioning in environments subjected to high heat fluxes. The first …
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Rapid Transient Cooling Utilizing Flash Boiling and Desorption on Graphitic Foams
Transient thermal systems present significant challenges. Neglecting the time constants
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Experimental investigation and mathematical modelling of dynamic equilibrium of novel thermo-fluids for renewable technology applications
… to address these environmental problems. Solar thermal energy has a potential to diminish the dependency on fossil fuels and reduce CO2 emissions in which solar radiation is converted to heat via a thermal fluid for power and heat generation. Medium and high-temperature solar thermal systems …
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