Analytical model of cold water front movement in a geothermal reservoir

Stopa, Jerzy; Wojnarowski, Paweł

doi:10.1016/j.geothermics.2005.11.002

Cited by 46 publications

(24 citation statements)

References 12 publications

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“…Researches on analytical methods for heat transfer have been conducted by Sauty et al [18], Uffink [19], Voigt and Haefner [20], Krarti and Claridge [21], Yang and Yeh [22], and Stopa and Wojnarowski [23]. Kangas and Lund [17] pointed out that analytical solution is applicable only to the simplest cases or to qualitative estimations.…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling of aquifer thermal energy storage system

Kim

Lee

Yoon³

et al. 2010

Energy

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Section: Introductionmentioning

confidence: 99%

Numerical modeling of aquifer thermal energy storage system

Kim

Lee

Yoon³

et al. 2010

Energy

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“…It is assumed that the thermal properties of the buffer and the host rock remain constant in space and time. This assumption is applicable when the change of temperatures in the geological repository is not very large [21]. The decay heat function utilized for the calculations, based on the data of the Taiwan Nuclear Power Factory and the coefficients a 1 , a 2 , and a 3 in Eq.…”

Section: Resultsmentioning

confidence: 99%

Modeling transient heat transfer in nuclear waste repositories

Yang

Yeh

2009

Journal of Hazardous Materials

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“…The temperature front lags the fluid front by a constant depended on the ratio of rock/water volumetric heat capacities. An analytical model of thermal front propagation for one dimensional, linear flow with variable thermal properties of water-rock system was proposed by Stopa and Wojnarowski [3]. They concluded that thermal front moves slower than the injected water (as in the classical solution) and thermal front velocity differs from the front velocity obtained under the assumption of constant thermal properties by about 1-14% under a wide range of conditions.…”

Section: Previous Workmentioning

confidence: 99%

Influence of fracture-matrix interaction on thermal front movement in fractured reservoir

Siemek¹,

Stopa²

2015

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. Commercial exploitation of geothermal resources requires the disposal of large volumes of cooled brine in an environmentally acceptable way. Reinjection of cooled (i.e. spent) geothermal water has become a standard reservoir management strategy. Since injected fluids are typically much colder than the reservoir rock, this strategy results in the cooling of the region around the injection wells. Injected cool water may not have sufficient residence time in the reservoir to receive enough heat from surrounding hotter rock, resulting in temperature decrease at producing wells. Usually, the energy transport in geothermal reservoirs is calculated by use of sophisticated numerical simulators. In this paper we present analytical solution of simplified model of mass and heat transfer in fractured porous medium in one dimension, assuming constant rock temperature and neglecting small-scale effect connected with dispersion and heat conduction. The solution presented in this paper is applicable if thermal capacity of rock is high but the specific area is not sufficient for instant thermal equilibrium. This approach allows for better understanding the relation between fluid movement along the fractures and heat transfer between the rock matrix and fluid. Simple numerical experiments reported in the paper have shown the importance of specific surface area of naturally fractured rock, which influences the rate of exchange of heat between the fractures and the rock matrix.Key words: geothermal reservoir, reinjection, thermal front movement.l -specific length [m], Q -heat transfer between rock and fluid per unit of Greek letters

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Analytical model of cold water front movement in a geothermal reservoir

Cited by 46 publications

References 12 publications

Numerical modeling of aquifer thermal energy storage system

Numerical modeling of aquifer thermal energy storage system

Modeling transient heat transfer in nuclear waste repositories

Influence of fracture-matrix interaction on thermal front movement in fractured reservoir

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