On the use of heat pipe principle for the exploitation of medium–low temperature geothermal resources

Franco, Alessandro; Vaccaro, Maurizio

doi:10.1016/j.applthermaleng.2013.05.024

Cited by 59 publications

(23 citation statements)

References 21 publications

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“…Because of forced convection, the vapor moves to the top cover (3). It condenses on the surface (6). The condensate formed due to gravity flows downward.…”

Section: Mathematical Model and Numeral Methodsmentioning

confidence: 99%

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Numerical simulation of heat and mass transfer in a closed two – phase geothermal thermosyphon

Valieva

Nee

2017

MATEC Web Conf.

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Abstract. Mathematical model of the heat and mass transfer process in a two-phase thermosyphon with allowance for the coolant phase transformations is presented in this study. The formulated boundary-value problem was solved by the finite differences method. The numerical experiment results are presented and the temperature fields are obtained for different operation times of the geothermal thermosyphon.

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“…Because of forced convection, the vapor moves to the top cover (3). It condenses on the surface (6). The condensate formed due to gravity flows downward.…”

Section: Mathematical Model and Numeral Methodsmentioning

confidence: 99%

“…U-shaped heat exchangers are used to extract energy [6]. However, the use of such heat transfer devices is accompanied by difficulties in mounting.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of heat and mass transfer in a closed two – phase geothermal thermosyphon

Valieva

Nee

2017

MATEC Web Conf.

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“…Currently we have various thermodynamic cycles that utilizes waste heat dissipated from power generation. Those cycles are SRC, Striling cycle, Brayton cycle, Kalina Cycle, and ORC [5]. When ORC is compared with the other waste heat recovering cycles, the latter exhibit certain degree of shortcomings.…”

Section: Organic Rankine Cycle and Steam Rankine Cyclementioning

confidence: 99%

The Performance of waste Heat Recovery Systems using Steam Rankine Cycle and Organic Rankine Cycle For Power Generation

Satheeshkumar,

Lim

2019

IJEAT

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This paper presents extensive modelling of an Organic Rankine Cycle (ORC) system for a combined cycle power plant and to compare and evaluate the performance of ORC and Steam Rankine Cycle (SRC). In addition, ORC as a second stage waste heat recovery system after SRC too was modelled. Conceptual design of an ORC was made to replace the SRC system used in the power plant and its performance was compared with that of the SRC above. Upon replacing the steam cycle with ORC, the system efficiency is 7.63 %. The total energy destruction is 5140.41 kW. The result shows that ORC delivers very low system efficiency. The steam cycle produces 202.5MW whereas the presented ORC produces just 1.016MW of power. On the other hand, if ORC is implemented on the chimney the system will produce 0.2% of extra power on top the current power production of 675MW. The efficiency of this system is 7.81%. It is recommended to add the ORC at the chimney to tap more useful energy from the otherwise waste energy rejected into the environment.

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“…This set-up allows for highly exothermal reactions with very efficient passive cooling, maintaining process stability Geothermal heat pipes Franco et al [134] This technology enables underground heat extraction without fluid being withdrawn or pumping power necessary for fluid to flow in the underground heat exchanger. The working principle is similar to a thermosyphon/thermal diode, where the condenser will be above ground releasing heat, while the rest of the heat pipe will be below ground.…”

Section: Technologymentioning

confidence: 99%

Heat utilisation technologies: A critical review of heat pipes

Chan

Siqueiros

Ling‐Chin

et al. 2015

Renewable and Sustainable Energy Reviews

149

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On the use of heat pipe principle for the exploitation of medium–low temperature geothermal resources

Cited by 59 publications

References 21 publications

Numerical simulation of heat and mass transfer in a closed two – phase geothermal thermosyphon

Numerical simulation of heat and mass transfer in a closed two – phase geothermal thermosyphon

The Performance of waste Heat Recovery Systems using Steam Rankine Cycle and Organic Rankine Cycle For Power Generation

Heat utilisation technologies: A critical review of heat pipes

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