Influence of Heat Pipe on Heat Transfer Characteristics of Asphalt Concreteunder Different Thermal Boundary Conditions
[1]Peng Zhenyu.Influence of Heat Pipe on Heat Transfer Characteristics of Asphalt Concreteunder Different Thermal Boundary Conditions[J].Journal of Zhengzhou University (Engineering Science),2012,33(06):121-124.[doi:10.3969/j.issn.1671-6833.2012.06.029]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
33
Number of periods:
2012 06
Page number:
121-124
Column:
Public date:
2012-11-10
- Title:
- Influence of Heat Pipe on Heat Transfer Characteristics of Asphalt Concreteunder Different Thermal Boundary Conditions
- Keywords:
- asphalt eonerete; heat pipe; numerical simulation; boundary condition; heat transfer characteristics
- CLC:
- TU528.4
- DOI:
- 10.3969/j.issn.1671-6833.2012.06.029
- Abstract:
- The temperature of asphalt pavement rises rapidly in the strong sunlight. It will cause troubles tothe thermal stability of the pavement, Heat pipe is a kind of ideal apparatus to transfer heat and maintain uni.form temperature distribution, and it will effectively reduce the rising speed of asphalt pavement temperature.Three-dimensional models of asphalt concrete are established based on numerical simulation method, and conditions of with and without heat pipe are considered, The temperature to time response characteristies at differ.ent depths of the concrete are studied, when the surface of the conerete is conducted in heating or cooling.The calculation results show that, the temperature of conerete surface is reduced distinctly by the heat pipe inthe heating process, ’The maximal temperature decrease is 9℃ . Counteracted by the heat pipe, heat is difficultto be conducted to deep region beneath the heat pipe. The cooling speed of concrete surface is accelerated byheat pipe in the cooling process , and the temperature distribution around heat pipe is more uniform than that ofother regions. It is helpful to reduce internal stress and maintain structure stability for the pavement.
- References:
- -
- Similar References:
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Last Update:
1900-01-01