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Showing 1 to 20 of 12291 for “"Thermal"”.
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Fabrication of Thermal Management Devices using Thermal Spray Technology
Thermal spray coating processes have been employed to create a composite finned heat sink and a flat vapor chamber featuring structured porous coating wicks, for thermal management application. Three composite heat sinks in the shape of a disk, a cylinder, and a cylinder with vertically projecting …
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Thermal properties of graphene and graphene-based thermal diodes
… a promising material revealing an unusually high thermal conductivity �. However, both experimental and theoretical previous works lack of a strict thermal conductivity value, estimating results in the range 89-5000 W m-1 K-1. In this scenario, I address graphene thermal transport properties by …
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Spectral engineering for solar-thermal and thermal-radiative systems
… on strategies to harvest and control solar and thermal radiation, with the goals (1) to improve power generation efficiency using solar and thermal photovoltaics and (2) to reduce the energy consumption used to maintain human comfort in built environments. Solar radiation, as one of the most …
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Enriching Urban Thermal Experience: Thermal Pleasure Around Urban Public Places
Positive urban thermal experience depends on both the non-extremity and variability of thermal stress in the built environment. To date, the majority of outdoor thermal comfort research has proposed to mitigate thermal extremes while overlooking the contribution from the richness of thermal …
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THERMAL-LITE : a microcomputer program for thermal and daylighting analysis
… heat gain or loss through windows. Although the thermal performance of windows has been dramatically improved since the first OPEC's oil embargo, it still remains of a concern of energy conscious design. In one way, the complexity of the thermal behaviour of windows which represents the apertures …
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Thermal Performance Comparison of Three Integrated Thermal Solar Roof Collectors
… by operating this system. The traditional solar thermal system is an add-on system rather than integrated, which increases the cost-benefit ratio. The current system is integrated with the roof structure. Except for the energy collecting benefit, it will reduce the material cost, labor cost and …
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Transonic thermal blooming
According to the linearized solutions for thermal blooming, the density perturbations become infinite (i.e. "catastrophic" defocusing) as the Mach number approaches unity. However, the nonlinearities in the transonic equations cutoff the trend to infinity, and the values of the flow perturbation …
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Thermal boundary resistance
The acoustic mismatch theory for the thermal boundary (Kapitza) resistance has peen modified so as to include the effect of phonon attenuation near the interface. The modified theory is in good agreement below 0.2 K with present measurements on metal-dielectric interfaces and with previous …
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Inhabitable thermal variations
Thesis. 1978. M.Arch--Massachusetts Institute of Technology. Dept. of Architecture.
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Thermal contact resistance.
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1967.
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Contact thermal lithography
Contact thermal lithography is a method for fabricating microscale patterns using heat transfer. In contrast to photolithography, where the minimum achievable feature size is proportional to the wavelength of light used in the exposure process, thermal lithography is limited by a thermal diffusion …
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Measurements of Thermal Expansion and Thermal Equilibrium Defects in Puresilver-Chloride
Made available in DSpace on 2015-05-12T21:41:27Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6406057.PDF: 2300991 bytes, checksum: 8cab353bd7427ad0e6a0b757365e5e30 (MD5) Previous issue date: 1963
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Linear-time 3-D thermal methods for transient electro-thermal simulations
… reliabilities. To achieve both, an electro-thermal simulator is needed as the thermal aspect of a device, such as the temperature, can play a big role on its reliability. By doing just the electrical simulation, an engineer cannot possibly determine the temperature of operation, and thus …
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Increasing Cermet Fuel Thermal Margin with Thoria for Nuclear Thermal Propulsion
Nuclear thermal propulsion (NTP) technology was identified as an alternative for faster space travel over chemical combustion propulsion systems by NASA in its Design Reference Addendum 5.0. Potential improvements to NTP performance were considered by improving the fuel margin to melting point. A …
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Thermal Characterization of Graphitic Carbon Foams for Use in Thermal Storage Applications
… foams are currently being studied for use as thermal conductivity enhancers (TCEs) in thermal energy storage (TES) systems. TES systems store energy using the latent heat capacity of phase change materials (PCMs). Due to the low thermal conductivity of most PCMs, TCEs are necessary to evenly …
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Thermal Probes of Nanoparticle Interfaces: Thermodiffusion and Thermal Conductivity of Nanoparticle Suspensions
At T < 20°C, all nanoparticles studied in nearly pure water were found to migrate to the hot regions of the fluid; i.e., DT 50°C, the thermodiffusion coefficients were positive with a value consistent with the predictions of a theoretical model originally proposed by B. Derjaguin that is …
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High-Throughput Measurements of Thermal Conductivity and the Coefficient of Thermal Expansion
… junction (DEJ) in a human tooth. The thermal conductivity and Young's modulus are uniform in dentin and enamel, respectively, and change abruptly across the dentin-enamel interface. The CTE changes gradually in dentin near the DEJ over a transition width of ≈ 100 mum.
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Experimental studies of thermal and non-thermal electron cyclotron phenomena in tokamaks
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Physics, 1985.
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