Investigation of viability of seasonal waste heat storage in rock piles for remote communities in cold climates

Ghoreishi‐Madiseh, Seyed Ali; Safari, Abdolreza; Amiri, Leyla; Baidya, Durjoy; Brito, Marco Antonio Rodrigues de; Kuyuk, Ali Fahrettin

doi:10.1016/j.egypro.2018.12.019

Cited by 11 publications

(10 citation statements)

References 3 publications

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“…However, in the proposed system, the source of thermal energy is the waste heat from diesel exhaust which has comparatively higher-grade thermal value and can be recovered at much lower costs. Therefore, the coupling between such high-grade waste heat source and an underground seasonal thermal energy storage (e.g., rockpile) system offers a viable opportunity for much shorter payback period [44]. This certainly makes the payback period of this proposed system short enough for it to be feasible.…”

Section: Borehole (Bh) Typementioning

confidence: 99%

Application of Borehole Thermal Energy Storage in Waste Heat Recovery from Diesel Generators in Remote Cold Climate Locations

et al. 2019

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Remote communities that have limited or no access to the power grid commonly employ diesel generators for communal electricity provision. Nearly 65% of the overall thermal energy input of diesel generators is wasted through exhaust and other mechanical components such as water-jackets, intercoolers, aftercoolers, and friction. If recovered, this waste heat could help address the energy demands of such communities. A viable solution would be to recover this heat and use it for direct heating applications, as conversion to mechanical power comes with significant efficiency losses. Despite a few examples of waste heat recovery from water-jackets during winter, this valuable thermal energy is often discarded into the atmosphere during the summer season. However, seasonal thermal energy storage techniques can mitigate this issue with reliable performance. Storing the recovered heat from diesel generators during low heat demand periods and reusing it when the demand peaks can be a promising alternative. At this point, seasonal thermal storage in shallow geothermal reserves can be an economically feasible method. This paper proposes the novel concept of coupling the heat recovery unit of diesel generators to a borehole seasonal thermal storage system to store discarded heat during summer and provide upgraded heat when required during the winter season on a cold, remote Canadian community. The performance of the proposed ground-coupled thermal storage system is investigated by developing a Computational Fluid Dynamics and Heat Transfer model.

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Section: Borehole (Bh) Typementioning

confidence: 99%

Application of Borehole Thermal Energy Storage in Waste Heat Recovery from Diesel Generators in Remote Cold Climate Locations

et al. 2019

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“…A rockpile or rock bed based sensible thermal energy storage has been considered for this scenario because of its practicality and ease of application previously demonstrated for such DEHR systems [11,12] and due to the readiness and availability of waste rock in mining operation sites. Also, since the system needs to be much larger than conventional STES designs commonly employed in industry, a rockpile STES seems to be one of the few options of technology that might be viable in this case due to its low-cost storage media and heat transfer fluid (air/exhaust).…”

Section: Methodsmentioning

confidence: 99%

“…The size of the rockpile has been estimated based on available scholarly articles [11] to store the all the estimated supplementary heat needed by the mine. As insulation of such system plays a vital role in the overall performance and the cost of the system, various insulation schemes and their corresponding seasonal heat losses were considered.…”

Section: Methodsmentioning

confidence: 99%

“…A number of studies exist suggesting seasonal thermal energy storage (STES) designs (e.g., borehole, rockpile, etc.) for diesel-based power generation strategies for possible application remote communities [10,11]. However, they do not do an integrated analysis of the whole system for remote mining operations rather focus on small civil communities.…”

Section: Introductionmentioning

confidence: 99%

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Techno-Economic Assessment of Integrating Thermal Energy Storage with Diesel Exhaust Waste Heat Recovery System for Remote Mines in Cold Climates

Durjoy,

Baidya,

Brito

et al. 2020

Preprint

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“…Experiments showed that the heat generated from the packed bed and the heat generated from the hot air that came from the bed were close to what was expected. Ghoreishi-Madiseh SA, et al [10] proposed that the sustainability of seasonal waste heat storage in rock heaps for a colder temperature rural off-grid village that relies entirely on diesel generators to provide electricity. During the winter, the community directly uses the recovered waste heat from the diesel generators.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Air Solar Collector with Energy Storage for Domestic Purposes

Saeed¹,

Abdullah²

2022

ACAD J NAWROZ UNIV

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ABSTRACT In the current study, a three-pass solar air collector (SAC) connected with a stone storage bed is investigated. The thermal energy storage was used to store energy during the day time and then re-use it at night or during the cloudy hours. Four solar air collectors were used in this research which were connected consecutively to the stone storage bed. High density black stones (440 kg) of different sizes and weights were used as a storing medium. The physical properties of the stones were measured in the lab. The experiments were conducted on clear and partly cloudy days for three random days at a constant air flow rate (0.0377 kg/s) for the climate of the Dohuk city, Iraq. The parameters that affect the thermal performance of (SAC) were evaluated with integration of the stone storage bed. The solar radiation intensity, air temperatures at different locations were measured. Obtained data showed that the stone storage bed gives a temperature difference of about 10℃ after sunset and lasts for about 4-5 hours. The used stone bed has the property of acquiring stored heat for a long time after sunset which was released at night or on partly cloudy days.

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Investigation of viability of seasonal waste heat storage in rock piles for remote communities in cold climates

Cited by 11 publications

References 3 publications

Application of Borehole Thermal Energy Storage in Waste Heat Recovery from Diesel Generators in Remote Cold Climate Locations

Application of Borehole Thermal Energy Storage in Waste Heat Recovery from Diesel Generators in Remote Cold Climate Locations

Techno-Economic Assessment of Integrating Thermal Energy Storage with Diesel Exhaust Waste Heat Recovery System for Remote Mines in Cold Climates

Investigation of Air Solar Collector with Energy Storage for Domestic Purposes

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