Performance evaluation of large scale rock-pit seasonal thermal energy storage for application in underground mine ventilation

Ghoreishi‐Madiseh, Seyed Ali; Sasmito, Agus P.; Hassani, Ferri; Amiri, Leyla

doi:10.1016/j.apenergy.2016.01.062

Cited by 69 publications

(37 citation statements)

References 25 publications

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“…Paper [108] addressed an important topic for energy saving in deep underground mines. Deep underground mining is highly energy intensive due to the need to overcome high pressure rise Editorial / Applied Energy xxx (2016) xxx-xxx required by ventilation fans, high cooling load in summer due to rise in rock temperature and the auto-compression effect, and heating requirement in winter.…”

Section: Energy Storagementioning

confidence: 99%

Clean, efficient and affordable energy for a sustainable future

et al. 2017

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Section: Energy Storagementioning

confidence: 99%

Clean, efficient and affordable energy for a sustainable future

et al. 2017

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“…The integrated factors limit the range of air velocity (Brune, 2019). Therefore, the cooling potential of ventilation was constrained, and it was not suitable for deep mines with high geothermal conditions (Ghoreishi-Madiseh et al, 2017). Natural cooling resources mainly referred to cold mine water and seasonal stored ice (Shi et al, 2011;Bu et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Heat Transfer and Phase Change Characteristics of Cold Load and Storage Functional CPB in Deep Mine

Wang

Lyu

et al. 2020

Front. Earth Sci.

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As high mine-cooling costs have become a restriction for deep mining, a new cooling method has been proposed. In the area of filling mining, the CPB (cemented paste backfill) was given the cooling function by mixing it with phase change material (PCM). In deep mines, the PCM (e.g., ice particles) absorb heat and change phases to cool the surrounding environment. A deep-mine-cooling mode based on the new CPB and upward sublevel filling method was designed, and the characteristics of the phase change were analyzed by numerical simulation. From the simulation results of the cooling period, this cooling method was effective during the whole stopes mining period. The CLS (cold load and storage) CPB mass concentration and the PCM initial proportion are the important factors controlling the cooling effect. It is concluded that the phase change duration decreased with the increasing mass concentration, while it increased with the increasing initial proportion of ice to water. Note that the thickness of CLSfunctional CPB should be as small as possible to ensure the cold release rate. This study provides a theoretical foundation of heat transfer for the design and implementation of deep mine cooling by applying CLS-functional CPB. Keywords: mine cooling, cold load and storage, mass concentration, proportion of ice to water, heat transfer HIGHLIGHTS -The phase change of CLS functional CPB in deep mines was investigated numerically. -The heat conduction model compound with hydration-porous-enthalpy model was applied. -The phase change and heat transfer law of CLS functional CPB was investigated. -The main influencing factors were analyzed and suggestions for engineering were presented.

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“…Ghoreishi‐Madiseh et al studied deep mine thermal air conditioning. Heat stored in a rock pit along summer days was employed during winter, as a sort of seasonal thermal rectifier.…”

Section: Introductionmentioning

confidence: 99%

Inverse design methodology to optimize sensible thermal energy storage systems working as rectifiers

2019

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Summary The main goal of this paper is to present a methodology to achieve the optimal design of a sensible thermal energy storage system (T3S) working as a thermal rectifier. The system was composed by the heat storage material (HSM), distributed in a set of flat parallel plates, and the working fluid, both modeled by a simplified lumped element model (LEM). The ratio of operational outlet temperature range to source temperature oscillation is defined as the designed rectifying duty. Optimization procedure combines a one‐factor‐at‐a‐time (OFAT) and line search strategies in order to find optimal T3S design that satisfies the designed rectifying duty with the minimum HSM mass. The inverse design philosophy is applied to the optimal results to generalize the T3S dynamic behavior as functions fitting curves of the number of transfer unit (NTU) and the time constant τ. These fitting curves can be used to identify T3S geometric parameters, HSM thermal properties, fluid inlet conditions, among others, which guarantee the outlet fluid temperature to be found within the operational range with the minimum HSM mass. A three step‐by‐step sequence design methodology is presented and detailed, based on design charts from the NTU and τ correlations. The proposed design methodology is able to find the optimal plate length L, plate thickness es, and plate distance ef that satisfies the designed rectifying duty for three test cases. These optimal T3S designs are simulated in a computer fluid dynamics (CFD) code, with deviations below 1.5% between the designed rectifying duty and the one simulated. With the proposed approach, several design solutions or configurations can be found for T3S operating as a thermal rectifier based on NTU and τ fitting curves submitted to a sinusoidal cyclic temperature input and with constant and uniform HSM and fluid properties.

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Performance evaluation of large scale rock-pit seasonal thermal energy storage for application in underground mine ventilation

Cited by 69 publications

References 25 publications

Clean, efficient and affordable energy for a sustainable future

Clean, efficient and affordable energy for a sustainable future

Numerical Investigation of Heat Transfer and Phase Change Characteristics of Cold Load and Storage Functional CPB in Deep Mine

Inverse design methodology to optimize sensible thermal energy storage systems working as rectifiers

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