Authors: Otten, L., Samaan, G.Y.I. And G.O.I. Ezeike
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Published in: CBE Journal » CBE Journal Volume 22 (1980)

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Description: Of all the thermal parameters of a material, the specific enthalpy or specific heat is probably the easiest property to measure accurately. All such measurements fall under the general heading of calorimetry and the equipment varies from the various forms of the drop calorimeter to the more sophisticated differential scanning calorimeters. The drop calorimeter is based on the method of mixtures. It involves bringing a known amount of sample material to some equilibrium temperature, usually in a furnace, and keeping the insulated receiver, which is usually filled with an inert liquid, at a lower temperature. When both the sample and receiver have reached their respective steady-state temperatures, the sample is quickly transferred or dropped into the receiver. The temperature of the receiver is measured with respect to time before and after the drop. A complete plot of the receiver temperature history allows calculation of the enthalpy-temperature relation and hence the specific heat temperature relation. Except for extremely sophisticated versions of the drop calorimeter, such as the Dynatech SHDW-R20

Keywords: determination of the specific heat of agricultural materials: part i. continuous adiabatic calorimeter
Citation: Otten, L., Samaan, G.Y.I. and G.O.I. Ezeike 1980. DETERMINATION OF THE SPECIFIC HEAT OF AGRICULTURAL MATERIALS: Part I. CONTINUOUS ADIABATIC CALORIMETER. Canadian Agricultural Engineering 22(1):21-24.
Volume: 22
Issue: 1
Pages 21 - 24
Date: 1980
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Publication type: Journal
Coverage: Canada
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