Simplified model for estimating performance of latent heat thermal energy storage of a shell-and-tube type unit

Koichi Nakaso, Seiichi Nogami, Naoki Takahashi, Yuichi Hamada, Jun Fukai

Research output: Contribution to journalArticle

Abstract

The outlet fluid temperature of a latent heat thermal energy storage unit was numerically estimated using a simplified three-dimensional heat transfer model. In this model, thermal conductivity of liquid phase assumed to have a high value, while free convection heat transfer in the liquid phase is neglected. Comparison of calculated and experimental values showed that the simplified model was able to predict the outlet fluid temperature, which was independent of the thermal conductivity of the liquid phase when the thermal conductivity exceeded a critical value. Moreover, fluid dynamics and heat transfer around heat transfer tubes were numerically predicted using a two-dimensional model that takes into account the free convection heat transfer. Comparison of the numerical results given by the two models showed that the simplified model is applicable to energy thermal storage in which free convection dominates the heat transfer rate.

Original languageEnglish
Pages (from-to)474-479
Number of pages6
JournalKagaku Kogaku Ronbunshu
Volume30
Issue number4
DOIs
Publication statusPublished - Jul 2004
Externally publishedYes

Fingerprint

Latent heat
Thermal energy
Energy storage
Heat transfer
Natural convection
Thermal conductivity
Thermal conductivity of liquids
Fluids
Tubes (components)
Liquids
Fluid dynamics
Temperature

Keywords

  • Convection Heat Transfer
  • Heat Exchanger
  • Numerical Simulation
  • Phase-Change Materials
  • Thermal Energy Storage

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Simplified model for estimating performance of latent heat thermal energy storage of a shell-and-tube type unit. / Nakaso, Koichi; Nogami, Seiichi; Takahashi, Naoki; Hamada, Yuichi; Fukai, Jun.

In: Kagaku Kogaku Ronbunshu, Vol. 30, No. 4, 07.2004, p. 474-479.

Research output: Contribution to journalArticle

Nakaso, Koichi ; Nogami, Seiichi ; Takahashi, Naoki ; Hamada, Yuichi ; Fukai, Jun. / Simplified model for estimating performance of latent heat thermal energy storage of a shell-and-tube type unit. In: Kagaku Kogaku Ronbunshu. 2004 ; Vol. 30, No. 4. pp. 474-479.
@article{f74f758d14c84585a731102258d7ee4b,
title = "Simplified model for estimating performance of latent heat thermal energy storage of a shell-and-tube type unit",
abstract = "The outlet fluid temperature of a latent heat thermal energy storage unit was numerically estimated using a simplified three-dimensional heat transfer model. In this model, thermal conductivity of liquid phase assumed to have a high value, while free convection heat transfer in the liquid phase is neglected. Comparison of calculated and experimental values showed that the simplified model was able to predict the outlet fluid temperature, which was independent of the thermal conductivity of the liquid phase when the thermal conductivity exceeded a critical value. Moreover, fluid dynamics and heat transfer around heat transfer tubes were numerically predicted using a two-dimensional model that takes into account the free convection heat transfer. Comparison of the numerical results given by the two models showed that the simplified model is applicable to energy thermal storage in which free convection dominates the heat transfer rate.",
keywords = "Convection Heat Transfer, Heat Exchanger, Numerical Simulation, Phase-Change Materials, Thermal Energy Storage",
author = "Koichi Nakaso and Seiichi Nogami and Naoki Takahashi and Yuichi Hamada and Jun Fukai",
year = "2004",
month = "7",
doi = "10.1252/kakoronbunshu.30.474",
language = "English",
volume = "30",
pages = "474--479",
journal = "Kagaku Kogaku Ronbunshu",
issn = "0386-216X",
publisher = "Society of Chemical Engineers, Japan",
number = "4",

}

TY - JOUR

T1 - Simplified model for estimating performance of latent heat thermal energy storage of a shell-and-tube type unit

AU - Nakaso, Koichi

AU - Nogami, Seiichi

AU - Takahashi, Naoki

AU - Hamada, Yuichi

AU - Fukai, Jun

PY - 2004/7

Y1 - 2004/7

N2 - The outlet fluid temperature of a latent heat thermal energy storage unit was numerically estimated using a simplified three-dimensional heat transfer model. In this model, thermal conductivity of liquid phase assumed to have a high value, while free convection heat transfer in the liquid phase is neglected. Comparison of calculated and experimental values showed that the simplified model was able to predict the outlet fluid temperature, which was independent of the thermal conductivity of the liquid phase when the thermal conductivity exceeded a critical value. Moreover, fluid dynamics and heat transfer around heat transfer tubes were numerically predicted using a two-dimensional model that takes into account the free convection heat transfer. Comparison of the numerical results given by the two models showed that the simplified model is applicable to energy thermal storage in which free convection dominates the heat transfer rate.

AB - The outlet fluid temperature of a latent heat thermal energy storage unit was numerically estimated using a simplified three-dimensional heat transfer model. In this model, thermal conductivity of liquid phase assumed to have a high value, while free convection heat transfer in the liquid phase is neglected. Comparison of calculated and experimental values showed that the simplified model was able to predict the outlet fluid temperature, which was independent of the thermal conductivity of the liquid phase when the thermal conductivity exceeded a critical value. Moreover, fluid dynamics and heat transfer around heat transfer tubes were numerically predicted using a two-dimensional model that takes into account the free convection heat transfer. Comparison of the numerical results given by the two models showed that the simplified model is applicable to energy thermal storage in which free convection dominates the heat transfer rate.

KW - Convection Heat Transfer

KW - Heat Exchanger

KW - Numerical Simulation

KW - Phase-Change Materials

KW - Thermal Energy Storage

UR - http://www.scopus.com/inward/record.url?scp=7444244993&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=7444244993&partnerID=8YFLogxK

U2 - 10.1252/kakoronbunshu.30.474

DO - 10.1252/kakoronbunshu.30.474

M3 - Article

AN - SCOPUS:7444244993

VL - 30

SP - 474

EP - 479

JO - Kagaku Kogaku Ronbunshu

JF - Kagaku Kogaku Ronbunshu

SN - 0386-216X

IS - 4

ER -