Measuring Heat
نویسندگان
چکیده
منابع مشابه
A Hybrid Method for Measuring Heat Flux
This paper reports on the development and evaluation of a novel hybrid method for obtaining heat flux measurements. By combining spatial and temporal temperature measurements, it is shown that both the time response and accuracy of a heat flux sensor can be improved. This hybrid method was shown to increase the time response of a heat flux sensor mounted on a high conductivity material by a fac...
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The cone calorimeter is considered the most significant bench scale instrument in fire testing. This apparatus has been adopted by the International Organization for Standardization (ISO 5660-1) for measuring heat release rate (HRR) of a sample. It has been shown that most fuels generate approximately 13.1 MJ of energy per kg of oxygen consumed. Therefore, HRR is based on the fact that the oxyg...
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A rudimentary calorimeter was constructed to measure the temperature dependence of the specific heat of a 10 m thick ~0.62 mg! copolymer film of vinylidene fluoride and trifluoroethylene in the previously unexplored vicinity of 6 K. The data were processed with the algorithm developed by Hwang et al. @Rev. Sci. Instrum. 68, 94 ~1997!# as modified for our configuration in which a Cernox thermome...
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It has been predicted that the heat capacity of superfluid He will diverge strongly at a depressed transition temperature in the presence of a constant heat flux, Q. We have built a cell to measure this effect, and have taken preliminary measurements at various heat flux values. Our data indicate an enhancement of the heat capacity that varies as a function of Q. However, the temperature depend...
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A practical protocol to obtain accurate heat capacity values of pharmaceutical compounds using modulated-temperature differential scanning calorimetry was established. Three pharmaceutical compounds, acetaminophen, indomethacin, and tri-O-methyl-β-cyclodextrin were used as model compounds. Powder samples did not produce reproducible results, presumably due to inclusion of gas in gap of powders ...
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ژورنال
عنوان ژورنال: Nature
سال: 1884
ISSN: 0028-0836,1476-4687
DOI: 10.1038/030361a0