Numerical analysis of Latent heat thermal Energy Storage (LHTES) Performance: A2 D axisymmetric approach (Record no. 14719)

MARC details
000 -LEADER
fixed length control field 02651nam a22001697a 4500
082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER
Classification number 621.47
Item number K963N
100 ## - MAIN ENTRY--AUTHOR NAME
Personal name Kumar, Dileep
245 ## - TITLE STATEMENT
Title Numerical analysis of Latent heat thermal Energy Storage (LHTES) Performance: A2 D axisymmetric approach
Statement of responsibility, etc by Dileep Kumar
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Place of publication IIT Jodhpur
Name of publisher Department of Mechanical Engineering
Year of publication 2018
300 ## - PHYSICAL DESCRIPTION
Number of Pages xv,25p.
Other physical details HB
520 ## - SUMMARY, ETC.
Summary, etc Shell and tube type latent heat thermal energy storage (STLHTES) device is numerically evaluated by applying fully implicit finite volume method. A 2-D axisymmetric numerical model is developed in order to analyse the dynamic behaviour of charging and discharging of elementary unit of STLHTES. The STLHTESconsists of a pipe of finite thickness carrying heat transfer fluid (HTF). It issurrounded by latent heat storage medium or the phase change material (PCM). In the 2-D axisymmetric PCM domain, diffusion dominated heat transfer mechanism is considered while the flow of HTF in 1-D is considered to be dominatedby convection. Coupling has beendone between the two domains through energy balance at the pipe wall taking half control volume at the boundary. The present work proposes a novel scheme, liquid-fraction updating scheme, for solving the energy conservation equation in PCM domain. Comparison has been done between the base case (no thermal conductivity enhancement in the PCM by graphite incorporation) and other cases (where thermal conductivity enhancement of PCM is done by incorporation of graphite) with parametric analysis based on variable pipe sizes of HTF pipe. During graphite incorporation, anisotropic effects are also taken into account. Simulations are also performed to obtain the evolution of temperature in PCM and HTF domain along with extent of melting/solidification in the PCM domain for different values of fraction of graphite. The analysis shows significant reduction in cycle time for charging and discharging due to incorporation of graphite in the PCM composite and increase in heat transfer rate caused by increase in Reynolds number following smaller pipe sizes of HTF pipe (central pipe through which HTF flows). Key Words:LHTES, shell and tube LHTES, Liquidfraction update technique, Solidification, Melting, Charging, Discharging, anisotropy, graphite.<br/>
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical Term Latent heat thermal Energy Storage (LHTES)
Topical Term MTech Theses
Topical Term Department of Mechanical Engineering
700 ## - ADDED ENTRY--PERSONAL NAME
Personal name Chakraborty, Prodyut Ranjan
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type Thesis
Holdings
Withdrawn status Lost status Damaged status Not for loan Collection code Permanent Location Current Location Shelving location Date acquired Full call number Accession Number Price effective from Koha item type
      Not For Loan Reference S. R. Ranganathan Learning Hub S. R. Ranganathan Learning Hub Course Reserve 2024-01-24 621.47 K963N TM00138 2024-01-24 Thesis