Results 261 to 270 of about 508,590 (314)
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Quantifying useful thermal mass: how much thermal mass do you need?
Architectural Science Review, 2014This study examines the development of rules of thumb based on relationship between thermal mass (thermal capacity) and spatial volume; it explores the following research questions: (1) Can you have too much mass in a building?(2) Is there a point at which adding additional mass to a space will not reduce the internal diurnal temperature range during ...
Ben Slee +2 more
exaly +2 more sources
Thermal desorption mass spectrometer for mass metrology
Review of Scientific Instruments, 2014This article presents a device for the study of physisorbed elements on polished surfaces (diameter ⩽56 mm) of the kind used in mass metrology. The technique is based on mass spectrometry of molecules desorbed after heating under vacuum of the analyzed surface.
Silvestri, Zaccaria +7 more
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Thermal flow sensor used for thermal mass flowmeter
Microelectronics Journal, 2020ABSTRACT Actually, many devices used for flow rate measurement in oil and gas fiscal metering like orifice and turbine meters are often employed. This work deals with dispersion thermal flow meter fabricated by hot wire anemometers technology using the thermal domain for measuring natural gas in transaction operations, where it is unusually used ...
Amina Bekraoui, Ahmed Hadjadj
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Mass and Thermal Diffusivity Algorithms
Annals of the New York Academy of Sciences, 2002Abstract: Mass and thermal diffusivity measurements conducted on Earth are prone to contamination by uncontrollable convective contributions to the overall transport. Previous studies of mass and thermal diffusivities conducted on spacecraft have demonstration the gain in precision, and lower absolute values, resulting from the reduced convective ...
R Michael, Banish +4 more
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Thermal Ionisation Mass Spectrometry
2014Thermal ionisation, also known as surface ionisation, was one of the first ionisation techniques developed for mass spectrometry, having been invented as early as 1918. The ionization process, described by the empirically derived “fractionation laws”, is widely understood. Isotope ratio measurements can be achieved with high precision and accuracy. Due
Bürger, Stefan +4 more
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Constitutive Relations of Thermal and Mass Diffusion
Journal of Non-Equilibrium Thermodynamics, 2020AbstractNon-equilibrium thermodynamics provides a general framework for the description of mass and thermal diffusion, thereby including also cross-thermal and material diffusion effects, which are generally modeled through the Onsager coupling terms within the constitutive equations relating heat and mass flux to the gradients of temperature and ...
Bertei A, Lamorgese A, Mauri R
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The Effect of Thermal Mass on Thermal Transmission Loads
ASME 2007 Energy Sustainability Conference, 2007A finite-difference model is used to simulate the effects of thermal mass on thermal load. A sinusoidal function is used to simulate the exterior air temperature. The interior air temperature set point remains constant. The mechanism by which thermal mass affects thermal load is described.
Gilbert, Robert B., Kissock, J. Kelly
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Thermal Mass and Night Ventilation - Utilising “Hidden” Thermal Mass
International Journal of Ventilation, 2002AbstractThis paper presents an overview of systems that utilise thermal mass in conjunction with night ventilation. It discusses the concepts behind and development of a system (“CoolDeck”) to improve the performance of systems where air is ventilated through false ceiling and floor voids to access “hidden mass”. The system improves thermal interaction
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