Numerical Study of Factorial Impact of Thin Layer Ring on Improving Thermal Performance of Ice Thermal Storage System

2015 ◽  
Author(s):  
Junling Xie ◽  
Chris Yuan
Keyword(s):  
Energy Efficiency ◽  
Thin Layer ◽  
Numerical Study ◽  
Storage System ◽  
Solidification Process ◽  
Thermal Storage ◽  
Ice Formation ◽  
Novel Technology ◽  
Time Period ◽  
Flow Domain

Ice thermal storage system is a novel technology used in HVAC&R systems for improving energy efficiency of manufacturing facilities. In this paper, the investigation of ice formation in a typical ice thermal storage system was conducted to study the factorial effect of the new structure of thin layer ring placed in a rectangular cavity filled with water on solidification process. Numerical method was used for the computational solutions of fluid flow domain. The performance of the thin layer ring was successfully demonstrated by achieving an increased ice generation area and shortening the time period of ice formation for a typical ice thermal storage system. More detailed research on material, thickness and arrangement of the ring has been comparatively conducted for heat transfer enhancement. The parameters of thin layer ring from three perspectives have been investigated statistically with nine combinations of model are carried out by combining different levels of each factor via Taguchi Method. The results show the contribution ratio of each factor of thin layer ring on improving energy efficiency of ice thermal storage system.

scholarly journals AN INVESTIGATION STUDY ON EXISTING BUILDING ENERGY EFFICIENCY RENOVATION WITH A WATER THERMAL STORAGE SYSTEM

2021 ◽  
Vol 27 (66) ◽  
pp. 779-784
Author(s):  
Tadao YAGI ◽  
Shigehiro ICHINOSE ◽  
Hiroyuki MIYAJI ◽  
Hironori KIMURA ◽  
Tomoya KAWAJI
Keyword(s):  
Energy Efficiency ◽  
Storage System ◽  
Thermal Storage ◽  
Building Energy ◽  
Building Energy Efficiency ◽  
Existing Building

Thermodynamic Design of a Phase Change Thermal Storage Module

1996 ◽  
Vol 118 (2) ◽  
pp. 89-96 ◽  
Author(s):  
M. Conti ◽  
C. Bellecci ◽  
Ch. Charach
Keyword(s):  
Phase Change ◽  
Numerical Study ◽  
Storage System ◽  
Fluid Flows ◽  
Active Phase ◽  
Thermal Storage ◽  
Design Parameters ◽  
System A ◽  
Removal Processes ◽  
Change Material

This paper analyzes the irreversibilities due to the heat transfer processes in a latent heat thermal storage system. The Thermal Storage Module (TSM) consists of a cylindrical shell that surrounds an internal coaxial tube. The shell side is filled by a Phase Change Material (PCM); a fluid flows through the inner tube and exchanges heat along the way. The most fundamental assumption underlying this study is that the exergy of the hot fluid stream in the active phase is discharged into the environment and completely destroyed, unless it is partially intercepted by the storage system. A numerical study is conducted to identify and to minimize the thermodynamic losses of the storage and removal processes. The dependence of the second-law efficiency of the system on various design parameters is investigated and discussed.

scholarly journals A numerical study on the thermal storage properties of packer bed under different arrangements of PCM capsules

2021 ◽  
pp. 274-274
Author(s):  
Zhong-Bin Zhang ◽  
Cong Yu ◽  
Zhong-Qiu Ci ◽  
Li-Hua Cao
Keyword(s):  
Energy Efficiency ◽  
Pressure Drop ◽  
Storage Capacity ◽  
Numerical Study ◽  
Thermal Storage ◽  
Exergy Efficiency ◽  
Strip Packing ◽  
Charging Time ◽  
Packing Model ◽  
Storage Properties

To evaluate the thermal storage properties of packer bed under different arrangements o phase change material (PCM) capsules, three packing models (strip packing model, in-line packing model and disordered packing model) are developed. The index of thermal storage properties for packer bed such as exergy efficiency, energy efficiency, pressure drop, charging time, temperature uniformity and thermal storage capacity is studied. The results show that the uniformity of the temperature field of the orderly packing model is obviously better than that of the disorderly ones. In addition, the in-line packing model has obvious advantages on the energy efficiency and the thermal storage capacity compared with the strip packing model. The strip packing model has the highest exergy efficiency, but it has a high pressure drop.

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