Separation of Power and Capacity in Latent Heat Energy Storage

Pointner, Harald; Steinmann, Wolf-Dieter; Eck, Markus; Bachelier, Camille

doi:10.1016/j.egypro.2015.03.189

Cited by 7 publications

(3 citation statements)

References 8 publications

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“…A nitrate salt mixture with a low melting temperature is chosen as a fluid layer. The influence of this fluid layer on the thermal contact was experimentally investigated in a separate study [29]. Compared to dry contact, an improvement of a factor of 9.9 can be realized [29].…”

Section: The Pcmflux Conceptmentioning

confidence: 99%

Experimental demonstration of an active latent heat storage concept

Pointner

Steinmann

2016

Applied Energy

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Latent heat storage allows efficient energy storage in systems with isothermal processes. The low thermal conductivity of cost-effective storage materials is the main challenge in the development of latent heat storage systems. Most of these systems developed so far use extended heat transfer surfaces to ensure sufficient heat transfer rates. The PCMflux concept described in this paper is based on the transport of the storage material across the heat transfer surface. The aim of this approach is to avoid the blockage of the heat transfer surfaces by solidified storage material. The paper gives an overview of the current development of the PCMflux concept including the theoretical analysis and the experimental proof-of-concept.

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Section: The Pcmflux Conceptmentioning

confidence: 99%

Experimental demonstration of an active latent heat storage concept

Pointner

Steinmann

2016

Applied Energy

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“…To enhance the heat transfer from the heat source to the PCM, many methods like using acetamide [1], tetradecane [2], heat exchanger pipes [3,4] commercial paraffin [5][6][7][8] as PCM have been developed. Many applications also use a single fin [9][10][11][12][13] or multiple aluminum fins attached to heat exchanger pipes, where storage material is separated from the heat exchanger to increase heat transfer rate. Advancing further, composites' applications have also shown a great advantage in buildings [14,15] and solar air conditioning applications [16].…”

Section: Introductionmentioning

confidence: 99%

Performance of phase changing material in an artificially created cold region to promote latent heat thermal energy storage

Patil

Desai

2021

Journal of Thermal Engineering

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In the present contribution, the authors investigate the peculiarity of Phase Changing Material for accumulating heat in the region equivalent to the hilly area by creating its atmosphere, having 20˚C DBT and 18˚C WBT. A water cooler is used in 5*7 feet bathroom to conceive the above-intimated temperature, measured by a sling psychrometer. In particular, in this study, trials are carried out in the LHTES tank where water is charged from ambient temperature to 55˚C with the aid of an Immersion water heater rod of 1000W,230V thereby liquifying PCM and then discharging to ambient temperature. Two Orientations namely, Circular and Cross are appropriated into the study, where Circular Orientation poses better results articulating the charging in an hour and discharging in 25 long hours, whereas Crossed Orientation represents charging in an hour and discharging in 23 hours. The volume of PCM and the net heat transfer surface have been kept constant in both cases, to compare them in the same operative conditions. The reason for the detour is manifested.

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“…The active transport adds the advantage, that constant thermal power during discharge is possible. Other active latent storage concepts are described by [7] and [8]. The heat transfer characteristics of the SHE during melting and crystallization are not known currently.…”

Section: Introductionmentioning

confidence: 99%