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Calorimeter

About: Calorimeter is a research topic. Over the lifetime, 5878 publications have been published within this topic receiving 77157 citations.


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Journal ArticleDOI
TL;DR: A high-temperature adiabatic calorimeter has been developed to measure the constant-volume specific heat capacities of both gases and liquids, especially fluids of interest to emerging energy technologies.
Abstract: A high-temperature adiabatic calorimeter has been developed to measure the constant-volume specific heat capacities (cV ) of both gases and liquids, especially fluids of interest to emerging energy technologies. The chief design feature is its nearly identical twin bomb arrangement, which allows accurate measurement of energy differences without large corrections for energy losses due to thermal radiation fluxes. Operating conditions for the calorimeter cover a range of temperatures from 250 K to 700 K and at pressures up to 20 MPa. Performance tests were made with a sample of twice-distilled water. Heat capacities for water were measured from 300 K to 420 K at pressures to 20 MPa. The measured heat capacities differed from those calculated with an independently developed standard reference formulation with a root-mean-square fractional deviation of 0.48 %.

23 citations

Proceedings ArticleDOI
TL;DR: The Zero Degree Calorimeter (ZDC) as discussed by the authors is integral part of the LHC experiment, especially for heavy ion studies, and includes two independent calorimeter sections: an electromagnetic section and a hadronic section.
Abstract: The Zero Degree Calorimeter (ZDC) is integral part of the CMS experiment, especially, for heavy ion studies. The design of the ZDC includes two independent calorimeter sections: an electromagnetic section and a hadronic section. Sampling calorimeters using tungsten and quartz fibers have been chosen for the energy measurements. An overview of the ZDC is presented along with a current status of calorimeter's preparation for Day 1 of LHC.

23 citations

Journal ArticleDOI
TL;DR: A gas perfusion microcalorimeter, primarily designed for studies of plant tissue, has been equipped with light guides in order to allow studies under the influence of light (UV-vis), and with variations in gas phase composition.

23 citations

Journal ArticleDOI
TL;DR: In this article, the authors report on a study to separate the light signal produced by an optical calorimeter into its scintillation and Cherenkov components, using differences in the time structure of these two signals.
Abstract: Simultaneous measurement of the scintillation and the Cherenkov light produced in hadronic shower development makes it possible to eliminate the effects of fluctuations in the electromagnetic shower fraction, which dominate and spoil the performance of non-compensating calorimeters. In this paper, we report on a study to separate the light signal produced by an optical calorimeter into its scintillation and Cherenkov components. To this effect, we use differences in the time structure of these two signals, as well as differences in the angular distribution of these two types of light. Both methods give useful results, especially when the numbers of scintillation and Cherenkov photons are comparable.

23 citations

Journal ArticleDOI
TL;DR: In this paper, the authors used a slug calorimeter to evaluate the thermal performance of fire resistive materials (FRMs) by placing the slug at the bottom of an electrically heated box furnace and monitoring the temperatures of the metal slug and FRM surfaces during multiple heating and cooling cycles.
Abstract: The utilization of a slug calorimeter to evaluate the thermal performance of fire resistive materials (FRMs) is presented. The basic specimen configuration consists of a ?sandwich?, with a square central stainless-steel plate (slug) surrounded on two sides by the FRM. This sandwich configuration provides an adiabatic boundary condition at the central axis of the slug plate that greatly simplifies the analysis. The other four (thin) sides of the steel plate (and FRM specimens) are insulated using a low thermal conductivity fumed-silica board. Two metal plates manufactured from a high temperature alloy provide a frame for placing the entire sandwich specimen slightly in compression. The entire configuration is centrally placed at the bottom of an electrically heated box furnace and the temperatures of the metal slug and exterior FRM surfaces are monitored during multiple heating and cooling cycles. Knowing the heat capacities and densities of the steel slug and the FRM, an effective thermal conductivity for the FRM can be estimated. The effective thermal conductivity of the FRM will be influenced by its true thermal conductivity and by any endothermic or exothermic reactions or phase changes occurring within the FRM. Preliminary tests have been conducted on two commonly used FRMs and on a non-reactive fumed-silica board to demonstrate the feasibility of the method.

23 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20224
202193
2020142
2019113
2018150
2017160