Modeling and improvement of a packed bed latent heat storage filled with non-spherical encapsulated PCM-Elements

2021 ◽  
Vol 173 ◽  
pp. 1087-1097
Author(s):  
Matti Grabo ◽  
Emre Acar ◽  
Eugeny Y. Kenig
Keyword(s):  
Latent Heat ◽  
Heat Storage ◽  
Packed Bed ◽  
Latent Heat Storage

Experimental charging characteristics of medium-temperature cascaded packed bed latent heat storage systems

2021 ◽  
Vol 42 ◽  
pp. 103067
Author(s):  
Ashmore Mawire ◽  
Chidiebere S. Ekwomadu ◽  
Adedamola B. Shobo
Keyword(s):  
Latent Heat ◽  
Heat Storage ◽  
Storage Systems ◽  
Packed Bed ◽  
Latent Heat Storage ◽  
Medium Temperature

scholarly journals Thermal Stratification Performance of a Packed Bed Latent Heat Storage System during Charging

2018 ◽  
Vol 64 ◽  
pp. 03001
Author(s):  
Mawire Ashmore ◽  
Lentswe Katlego ◽  
Lugolole Robert ◽  
Okello Denis ◽  
Nyeinga Karidewa
Keyword(s):  
Latent Heat ◽  
Flow Rate ◽  
Thermal Stratification ◽  
Heat Storage ◽  
Storage System ◽  
Packed Bed ◽  
Heat Transfer Fluid ◽  
Latent Heat Storage ◽  
Flow Rates ◽  
Peak Value

Experimental thermal stratification evaluation of a packed bed latent heat storage is done during charging cycles. The packed bed latent heat storage system consists of adipic acid encapsulated in aluminum spheres. Sunflower oil is used as the heat transfer fluid during charging cycles. Stratification number profiles are used to evaluate thermal stratification in the storage system. Charging experiments are carried out with three different flow-rates (4 ml/s, 8 ml/s and 12 ml/s). Charging experiments are also done using the same flow-rate (8 ml/s) with three different set heater temperatures (220 °C, 240 °C and 260 °C). The lowest charging flow-rate (4 ml/s) shows the best variation of the stratification number profile since it shows the least drop from the peak value and the shortest charging interval. Different set heater temperatures show almost identical stratification number profiles. The effect of the charging flow-rate is more significant than the effect of the charging set heater temperature when evaluating thermal stratification for this particular system.

An Investigation of a Latent Heat Storage Porous Bed and Condensing Flow Through It

1990 ◽  
Vol 112 (4) ◽  
pp. 1014-1022 ◽  
Author(s):  
K. Vafai ◽  
M. So¨zen
Keyword(s):  
Latent Heat ◽  
Heat Storage ◽  
Packed Bed ◽  
Local Thermal Equilibrium ◽  
Working Fluid ◽  
Latent Heat Storage ◽  
Inertia Effects ◽  
Heat Storage Materials ◽  
Flow Through ◽  
Rigorous Model

In this work the transient analysis of the behavior of a packed bed of encapsulated phase change material (PCM) and the condensing flow through it is presented. The rigorous model used assumes no local thermal equilibrium between the bed particles and the working fluid, and incorporates the inertia effects in the momentum transport by the use of the Ergun-Forchheimer equation. Condensation in the working fluid is investigated. Thermal charging of the packed bed is analyzed and compared for a sensible heat storage material as well as for different latent heat storage materials (PCMs).

Performance comparison of medium temperature domestic packed bed latent heat storage systems

2020 ◽  
Vol 146 ◽  
pp. 1897-1906 ◽  
Author(s):  
Ashmore Mawire ◽  
Tlotlo M. Lefenya ◽  
Chidiebere S. Ekwomadu ◽  
Katlego A. Lentswe ◽  
Adedamola B. Shobo
Keyword(s):  
Latent Heat ◽  
Heat Storage ◽  
Storage Systems ◽  
Packed Bed ◽  
Performance Comparison ◽  
Latent Heat Storage ◽  
Medium Temperature
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