Heat Transfer in Sandstones at Low Temperature

doi:10.1007/s00603-018-1595-x

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Heat Transfer in Sandstones at Low Temperature
	Liu, Zhiqiang ; Wang, Linlin ; Zhao, Bo ; Leng, Jingyi ; Zhang, Guangqing ; Yang, Diansen
刊名	ROCK MECHANICS AND ROCK ENGINEERING
	2019
卷号	52 期号:1 页码:35-45
关键词	Freezing-thawing Sandstone Convective boundary Heat capacity Thermal conductivity Pore-size distribution
ISSN号	0723-2632
DOI	10.1007/s00603-018-1595-x
英文摘要	This paper addresses experimental and modeling investigations of heat transfer in sandstones subject to low-temperature conditions. At low temperature, pore liquid (e.g., water) would freeze; thus, heat is transferred not only in the form of specific heat but also in the form of latent heat. Moreover, the melting point is not constant; it depends on the pore size. Considering these characteristics, a governing equation of heat transfer with phase transition is established using the equivalent heat-capacity method. To calculate the equivalent heat capacity, the relation between ice content and temperature is assessed by the pore-size distribution curve. Heating tests (from 77 to 293K) of sandstone samples in three saturation conditions (water-saturated, oil-saturated, and dry) are conducted and simulated using the model established. The results reveal that the temperature sensitivity of the heat capacity of dry sandstone is more pronounced in the low-temperature regime than in the high-temperature regime. The thermal conductivity of dry sandstone increases with temperature in the low-temperature regime. This is different with the case of the high-temperature regime at which the thermal conductivity decreases with temperature. The temperature evolution curve for the water-saturated sample features a plateau regime, that is, the temperature remains quasi-constant with time. The analysis demonstrates that the position and length of this temperature plateau are governed by the pore-size distribution.
WOS研究方向	Engineering ; Geology
语种	英语
WOS记录号	WOS:000456673000003
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/15093]
专题	岩土力学所知识全产出_期刊论文
作者单位	1.China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing, Peoples R China; 2.China Univ Petr, Coll Petr Engn, Beijing, Peoples R China; 3.Chinese Acad Sci, IRSM, State Key Lab Geomech & Geotech Engn, Wuhan, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Liu, Zhiqiang,Wang, Linlin,Zhao, Bo,et al. Heat Transfer in Sandstones at Low Temperature[J]. ROCK MECHANICS AND ROCK ENGINEERING,2019,52(1):35-45.
APA	Liu, Zhiqiang,Wang, Linlin,Zhao, Bo,Leng, Jingyi,Zhang, Guangqing,&Yang, Diansen.(2019).Heat Transfer in Sandstones at Low Temperature.ROCK MECHANICS AND ROCK ENGINEERING,52(1),35-45.
MLA	Liu, Zhiqiang,et al."Heat Transfer in Sandstones at Low Temperature".ROCK MECHANICS AND ROCK ENGINEERING 52.1(2019):35-45.