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Method for Testing Thermal Properties of Rice Straw

A technology of rice straw and thermal characteristics, applied in the agricultural field, can solve the problems of time-consuming and unfavorable testing, and achieve the effect of simple method, saving testing time and improving efficiency

Active Publication Date: 2016-06-01
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After searching the literature of the prior art, it is found that for solid powdery substances, the specific heat capacity, thermal conductivity, thermal resistance and thermal diffusivity are mostly measured separately at present, such as measuring the specific heat capacity by the adiabatic method, and measuring the thermal conductivity by the broken line method , Transient thermal resistance test method to test thermal resistance, laser flash method, flash method to measure thermal diffusivity; time-consuming, not conducive to multiple sample tests

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This embodiment relates to a method for testing the thermal properties of rice straw, the method comprising the following steps:

[0026] The first step is to select about 10 rice straws from a paddy field in Xinqiang Village, Jinhui Town, Fengxian District, Shanghai, using the scientific distribution method, peel off the stems and leaves, air-dry them, and then crush them through a 40-mesh sieve. The sieved rice straw was dried at 45°C, and the prepared sample was put into a 12-filament ziplock bag, and the moisture content of the rice straw sample at 45°C was measured to be 4.59%;

[0027] The second step is to insert the probe into the sample bag to ensure that the entire probe 1.5cm range is the test sample and then measure;

[0028] The third step is to use the model KD2-Pro thermal characteristic analyzer for testing, and insert the probe of the thermal characteristic analyzer into the rice straw powder for testing (to ensure that the entire range of 1.5cm of the ...

Embodiment 2

[0031] This embodiment relates to a method for testing the thermal properties of rice straw, the method comprising the following steps:

[0032] The first step is to select about 10 rice straws in a rice field in Luohe County, Guixi City, Jiangxi Province by scientific distribution method, peel off the stems and leaves, air-dry them, and then crush them through an 80-mesh sieve; The rice straw was dried at 45°C, and the prepared sample was put into a 12 wire ziplock bag, and the moisture content of the rice straw sample at 45°C was measured to be 4.13%;

[0033] The second step is to insert the probe into the sample bag to ensure that the entire probe 1.5cm range is the test sample and then measure;

[0034] The third step is to use the model KD2-Pro thermal characteristic analyzer for testing, and insert the probe of the thermal characteristic analyzer into the rice straw powder for testing (to ensure that the entire range of 1.5cm of the probe is the test sample), after the ...

Embodiment 3

[0037] This embodiment relates to a method for testing the thermal properties of rice straw, the method comprising the following steps:

[0038] In the first step, about 10 rice straws were selected in a rice field in Xiuning County, Anhui Province by the scientific distribution method, the stems and leaves were peeled off, air-dried, and then crushed through a 60-mesh sieve; the crushed and sieved rice straws were Dry at 45°C, and put the prepared sample into a 12-filament ziplock bag, and the moisture content of the rice straw sample at 45°C is measured to be 4.68%;

[0039] The second step is to insert the probe into the sample bag to ensure that the entire probe 1.5cm range is the test sample and then measure;

[0040] The third step is to use the model KD2-Pro thermal characteristic analyzer for testing, and insert the probe of the thermal characteristic analyzer into the rice straw powder for testing (to ensure that the entire range of 1.5cm of the probe is the test samp...

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PUM

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Abstract

The invention provides a method for testing thermal characteristics of rice straws. The method comprises the following steps: step one, taking treated rice straws, crushing, drying, carrying out water content test, and thus obtaining a rice straw powder; step two, putting the rice straw powder into a self-sealing bag for dry storage; and step three, inserting a probe of a thermal characteristic instrument into the rice straw powder to test, and thus obtaining the thermal characteristics of the rice straws. The thermal characteristic instrument is utilized for testing the thermal characteristics of the rice straws, so that the efficiency and the accuracy rate of the experiment can be greatly improved; and the method is simple, is easy to operate, does not need to employ other media, has high accuracy, and has positive guiding significance for quantitative energy utilization of agricultural biomass.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a method for testing the thermal characteristics of rice straw. Background technique [0002] Rice is a crop that is mainly used as feed for grain, economy and fodder, and rice straw is also an important production resource for industrial and agricultural production. As a resource, rice straw is rich in nutrients and available chemical components, which can be used as raw materials for livestock feed, and its high fiber content can be used as raw materials for bioenergy (such as fuel ethanol, bio-oil). [0003] The thermal properties of biomass directly affect the energy utilization of biomass. Therefore, as a common biomass, it is very important to accurately test the thermal properties of rice straw for the development of energy utilization of biomass. [0004] After searching the literature of the prior art, it is found that for solid powdery substances, the specific he...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/20G01N1/28
Inventor 刘荣厚王璐蔡文飞黄历孙辰
Owner SHANGHAI JIAOTONG UNIV