Download or read book Guarded Hot Plate and Heat Flow Meter Methodology written by C. J. Shirtliffe and published by ASTM International. This book was released on 1985 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guarded Hot Plate and Heat Flow Meter Methodology written by C. J. Shirtliffe and published by . This book was released on 1985 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Present and Future Research on Guarded Hot Plate and Heat Flow Meter Apparatus written by F. De Ponte and published by . This book was released on 1985 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The paper discusses some problems related to the guarded hot plate (GHP) and heat flow meter (HFM) apparatus that justify today research efforts and future research programs. For the GHP these include the problem of imbalance detection and its correlation with the metering area definition, the problem of gap width, and the problem of apparatus speed. Also discussed are the specimen-related issues involved in measurements on rigid, highly conductive materials and mass transfer within the specimen during tests.
Download or read book Intra Laboratory Comparison of a Line Heat Source Guarded Hot Plate and Heat Flow Meter Apparatus written by RR. Zarr and published by . This book was released on 1991 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The apparent thermal conductivity and thermal resistance of several building insulations were determined at the National Institute of Standards and Technology (NIST) using three apparatus. Reference values were determined with NIST's 1-metre Line-Heat-Source Guarded Hot Plate (GHP). The other two apparatus were heat-flow-meter (HFM) apparatus calibrated with a Standard Reference Material of fibrous-glass board (138 kg/m3). The apparatus -- NIST's 1-metre GHP; the 610 mm HFM; and the 305 mm HFM -- were operated at a mean temperature of 24°C and temperature difference of 22°C across the thickness of the specimen. Measurements of thermal conductivity were determined for individual specimens nominally 25 mm thick, covering a range of thermal conductivity from 0.02 to 0.16 W/(m•K). The thermal resistance of thick specimens (1 to 7 m2•K/W) of cellular plastic, fibrous and loose-fill insulation was also determined. Deviations from reference values of the GHP were calculated for the HFM apparatus. For the 610 mm HFM, the majority of deviations were within ±3% of the GHP. Substantial improvement was achieved by calibrating the 305 mm HFM as a function of thickness; however, deviations ranged from +1.5 to +9.2% from the GHP. The apparatus, test procedure, and analysis of the deviations are described in the paper.
Download or read book Thermoelectric Materials and Devices written by Iris Nandhakumar and published by Royal Society of Chemistry. This book was released on 2017 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: Authoritative account of recent developments in thermoelectric materials and devices for power energy harvesting applications, ideal for researchers and industrialists in materials science.
Download or read book A Review of Current Commercially Available Guarded Hot Plate and Heat Flow Meter Apparatus and Instrumentation written by KG. Coumou and published by . This book was released on 1985 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Equipment for the measurement of thermal performance is commercially available from a number of sources. Specifications of the various apparatus are compared, and unique features of each model are described briefly in the text. Future requirements for commercially produced thermal testing equipment are discussed.
Download or read book An inter comparison of guarded hot plate and heat flow meter apparatus within the United Kingdom and Ireland written by David Salmon and published by . This book was released on 2001 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermal Performance of Building Materials and Products written by British Standards Institution and published by . This book was released on 2001 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermal Conductivity 28 written by Ralph B. Dinwiddie and published by DEStech Publications, Inc. This book was released on 2006 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the most current research on heat flow in materials, ranging from metals to newer materials such as thin films and nanowires.
Download or read book Summary of Error Analysis for the National Bureau of Standards 1016 mm Guarded Hot Plate and Considerations Regarding Systematic Error for the Heat Flow Meter Apparatus written by B. Rennex and published by . This book was released on 1985 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: A summary is given of the error analysis of the National Bureau of Standards (NBS) 1016-mm guarded hot plate (GHP) apparatus, with emphasis given to new ideas or techniques. The report discusses the following items: a brief introduction to the principle of measurement, a rationale for the method of summing of uncertainties, a list of individual uncertainties, a description of the innovative plate temperature control method, and a derivation of the error due to systematic uncertainty for the heat flow meter apparatus.
Download or read book Historical Review of the Metered Section Area for the Guarded Hot Plate Method written by Robert R. Zarr and published by . This book was released on 2018 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of an extensive literature review and investigation of the metered section area for the guarded-hot-plate method, standardized as ASTM C177, Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Guarded-Hot-Plate Apparatus , are presented. The guarded-hot-plate apparatus is a primary linear-heat-flow method generally used to determine the thermal conductivity of insulating and building materials. The review examined technical publications from 1885 to 1990 and identified 31 papers of interest. Historical versions of ASTM C177 were also researched as well as test methods from other standard development organizations. The investigation revealed that, over the past 100 years, researchers have independently developed two main approaches for the computation of the metered section area. An assessment of the calculation techniques is presented for round plates with diameters from 250 to 1,000 mm, a guard-to-meter aspect ratio of 2, and guard gap widths of 14 mm. The gap effects are not negligible because large gaps (4 mm) on small plates (250 mm) can lead to errors of 10 % or more on the computation of the metered section area, ultimately affecting the uncertainty of the test results of the guarded-hot-plate method. The results of this study are applicable to other thermal conductivity test methods that employ a primary thermal guard to promote 1-D heat flow.
Download or read book Sensors Thermal Sensors written by Wolfgang Göpel and published by John Wiley & Sons. This book was released on 2008-07-11 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Sensors' is the first self-contained series to deal with the wholearea of sensors. It describes general aspects, technical andphysical fundamentals, construction, function, applications anddevelopments of the various types of sensors. This volume describes the construction and applicational aspects ofthermal sensors while presenting a rigorous treatment of theunderlying physical principles. It provides a unique overview ofthe various categories of sensors as well as of specific groups,e.g. temperature sensors (resistance thermometers, thermocouples,and radiation thermometers), noise and acoustic thermometers,heat-flow and mass-flow sensors. Specific facettes of applicationsare presented by specialists from different fields includingprocess control, automotive technology and cryogenics. This volumeis an indispensable reference work and text book for bothspecialists and newcomers, researchers and developers.
Download or read book Insulation Materials Testing and Applications 3rd Volume written by Ronald S. Graves and published by ASTM International. This book was released on 1997 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: ...Contains papers presented at the Third Symposium on Insulation Materials: Testing and Applications, held in Quebec City, Quebec, Canada, on 15-17 May 1997.
Download or read book Advanced Energy Technologies and Systems I written by Artur Zaporozhets and published by Springer Nature. This book was released on 2021-11-13 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on modern technologies and systems for solving problems in the energy sector. It is shown that bioenergy is one of the promising areas of energy development. The book collected the experience of scientists from many countries in the research of renewable energy. The advantages of renewable energy are general availability, renewability, environmental friendliness. The analysis carried out by the authors shows the current state of renewable energy in the world, its trends and prospects. New measuring systems are presented, which can become the basis for measuring the thermal characteristics of various types of fuels, including biofuels, insulating materials, enclosing structures, etc. System for monitoring of grainy biomass comminution with the use of genetic algorithms has been presented and described. New technologies for the construction of power plants based on renewable energy sources have been proposed and investigated.
Download or read book Building Applications of Heat Flux Transducers written by George E. Courville and published by ASTM International. This book was released on 1985 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Insulation Materials Testing and Applications 2nd Volume written by Ronald S. Graves and published by ASTM International. This book was released on 1991 with total page 647 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers presented at the syposium of the same name held in Gatlinburg, Tennessee, October 1991, address issues connected with reflectives, radiant barriers, radiation control coatings; economics and energy impact; long-term thermal performance of foams; assessments and properties of foams; convection
Download or read book Insulation Materials Testing and Applications 4th Volume written by André O. Desjarlais and published by ASTM International. This book was released on 2002 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt:
