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Rock specific heat capacity measuring device and measuring method

A measuring device and measuring method technology, which is applied in the field of specific heat capacity measurement, can solve the problems of increasing the contact area and shortening the time of thermal balance, and achieve the effect of improving the measurement accuracy

Pending Publication Date: 2018-01-23
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the presence of water can increase the contact area with the rock and shorten the time to reach thermal equilibrium during the measurement process. Therefore, the participation of water in the process of determining the specific heat capacity of rock has its own advantages and disadvantages.

Method used

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  • Rock specific heat capacity measuring device and measuring method
  • Rock specific heat capacity measuring device and measuring method
  • Rock specific heat capacity measuring device and measuring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] dry measurement method

[0064] Firstly, the mass M of the rock sample is weighed 1 , sample cup mass M 2 , cooling cup mass M 3 , let the specific heat capacity C of the rock sample 1 , the materials of the sample cup and the inner layer of the cooling cup are known, and the specific volume of the sample cup is C 2 , The specific heat capacity of the cooling cup is C 3 .

[0065] Remove the positioning pin 18 on the heat insulation board, pull a pair of heat insulation boards horizontally relative to each other, make the upper shell 2 communicate with the heating layer 9, then remove the upper end cover 2, and open the sample cup cover 15, and place the rock sample in the In the sample cup 14, ensure that the surface of the rock sample is in contact with the sample cup inwall, then cover the sample cup cover 15, close the heat shield 8, and install the upper end cover 2; through the fourth thermocouple 19, the fifth thermocouple 20 and the sixth thermocouple 21 m...

Embodiment 2

[0072] wet measurement method

[0073] When the measured rock sample is irregular and cannot be in good contact with the wall of the sample cup, add water to the sample cup, and the water acts as a medium for heat transfer to shorten the time required to reach thermal equilibrium. The specific measurement method is as follows:

[0074] Firstly, the mass M of the rock sample is weighed 1 , sample cup mass M 2 , cooling cup mass M 3 , the mass M of water added in the sample cup 4 , let the specific heat capacity C of the rock sample 1 , the materials of the sample cup and the cooling cup are known, and the specific volume of the sample cup is C 2 , the specific heat capacity of water C 3 , the specific heat capacity of the cooling cup is C 4 .

[0075] Put the rock sample in the sample cup 14, inject a certain amount of water and then cover the sample cup cover 15, the sample cup cover 15 seals the sample cup mouth to prevent the water from evaporating and dissipating hea...

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Abstract

The invention discloses a rock specific heat capacity measuring device. The rock specific heat capacity measuring device comprises a lower housing, a heating layer, a sample cup, a first galvanic couple group, a heat insulating plate, a cooling cup, a second galvanic couple group and an upper housing, wherein the heating layer for heating the sample cup is arranged inside the lower housing; the sample cup is movably arranged on the heating layer; the first galvanic couple group is arranged on the inner wall of the sample cup; the heat insulating plate is movably arranged on the top of the lower housing; the upper housing is arranged on the top of the heat insulating plate; the cooling cup is arranged inside the upper housing; a cooling cup heat insulating layer is arranged on the outer part of the cooling cup; the second galvanic couple group is arranged on the inner wall of the cooling cup. During cooling, the heat insulating plate is opened, so that the upper housing internally communicates with the lower housing, the sample cup is separated from the heating layer, and the sample cup is sleeved by the cooling cup. The device is simple in structure, is convenient to operate, is high in applicability, is precise in measuring, and has relatively high use and popularization value.

Description

technical field [0001] The invention relates to the field of specific heat capacity measurement, in particular to a rock specific heat capacity measurement device and a measurement method. Background technique [0002] The specific heat capacity of rock is a common and important thermodynamic parameter. How to accurately measure the specific heat capacity of rock is of great significance for the multi-field coupling research of rocks, and rock fragments are often used as aggregates in cement concrete and In asphalt concrete, the specific heat capacity of rock fragments will also have a certain impact on the heat transfer performance of concrete. Traditional rock specific heat capacity measurement devices often submerge rock blocks into water, and the presence of water will inevitably affect the specific heat capacity of rocks. After individual rocks are submerged in water, their physical properties will change. There are also individual rocks deposited by volcanic ash with ...

Claims

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Application Information

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IPC IPC(8): G01N25/20
Inventor 顾海荣刘文佳袁溪伟
Owner CHANGAN UNIV
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