The influence of geometrical parameters on the ice formation enhancement in a shell and double coil ice storage system

This project aims to study the optimal control model of the ice-storage system which is theoretically close to the optimal control and also applicable to actual engineering. Using Energy Plus, the energy consumption simulation software, and the simple solution method of optimal control, researchers can analyze and compare the annual operation costs of the ice-storage air-conditioning system of a project in Beijing under different control strategies. Researchers obtained the power rates of the air-conditioning system in the office building under the conditions of chiller-priority and optimal contro1 throughout the cooling season. Through analysis and comparison, they find that after the implementation of optimal control, the annually saved power bills mainly result from non-design conditions, especially in the transitional seasons.

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Regulation and stabilization by ice storage air-conditioning and battery energy storage system in microgrids

IEEJ Transactions on Electrical and Electronic Engineering ◽

10.1002/tee.22364 ◽

2016 ◽

Vol 12 (2) ◽

pp. 176-184 ◽

Cited By ~ 2

Author(s):

Lian Yang ◽

Nengling Tai ◽

Chunju Fan

Keyword(s):

Energy Storage ◽

Air Conditioning ◽

Storage System ◽

Energy Storage System ◽

Ice Storage ◽

Battery Energy Storage System ◽

Battery Energy Storage ◽

Battery Energy

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Thermodynamic Analysis of the Internal Melt-Ice-on-Tube during Melting under Natural Convection

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.937.375 ◽

2014 ◽

Vol 937 ◽

pp. 375-380

Author(s):

Yi Liu ◽

Xin Chen

Keyword(s):

Heat Transfer ◽

Natural Convection ◽

Storage System ◽

Heat Transfer Process ◽

The Other ◽

Ice Storage ◽

Ice Melting ◽

Single Tube ◽

Initial Stage ◽

The One

The numerical simulation of the ice melting processes in internal melt-ice-on-tube which is applied widely in the ice storage system is carried out. The dynamic mathematical models about melting are established and solved by using enthalpy method. Natural convection of the melted water in the course of melting is studied, and natural convection influences on single tube in melting heat transfer process is analyzed under the related parameters. Several conclusions are obtained:1. Because of natural convection of the melted water, the curve of melting interface is no longer a circle, but a curve changing with angle. The melting radius reaches minimum at the bottom and maximum at the top.2. The one with natural convention is compared to the other not considered. At initial stage, the influence of natural convection is smaller in the course of melting. However, the influence of natural convention increases along with melting.

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Numerical simulation of solidification process in an ice-on-coil ice storage system with serpentine tubes

SN Applied Sciences ◽

10.1007/s42452-019-1316-4 ◽

2019 ◽

Vol 1 (10) ◽

Cited By ~ 10

Author(s):

Khashayar Pakzad ◽

Seyed Soheil Mousavi Ajarostaghi ◽

Kurosh Sedighi

Keyword(s):

Numerical Simulation ◽

Storage System ◽

Solidification Process ◽

Ice Storage

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Numerical Modeling of the Melting Process in a Shell and Coil Tube Ice Storage System for Air-Conditioning Application

Applied Sciences ◽

10.3390/app9132726 ◽

2019 ◽

Vol 9 (13) ◽

pp. 2726 ◽

Cited By ~ 12

Author(s):

Seyed Soheil Mousavi Ajarostaghi ◽

Sébastien Poncet ◽

Kurosh Sedighi ◽

Mojtaba Aghajani Delavar

Keyword(s):

Heat Transfer ◽

Numerical Modeling ◽

Energy Storage ◽

Cold Storage ◽

Air Conditioning ◽

Storage System ◽

Melting Process ◽

Melting Time ◽

Inlet Temperature ◽

Geometrical Parameters

Cold thermal energy storage, as a promising way of peak-shifting, can store energy by using cheap electricity during off-peak hours and regenerate electricity during peak times to reduce energy consumption. The most common form of cold storage air conditioning technology is ice on the coil energy storage system. Most of the previous studies so far about ice on coil cold storage system have been done experimentally. Numerical modeling appears as a valuable tool to first better understand the melting process then to improve the thermal performance of such systems by efficient design. Hence, this study aims to simulate the melting process of phase change materials in an internal melt ice-on-coil thermal storage system equipped with a coil tube. A three-dimensional numerical model is developed using ANSYS Fluent 18.2.0 to evaluate the dynamic characteristics of the melting process. The effects of operating parameters such as the inlet temperature and flowrate of the heat transfer fluid are investigated. Also, the effects of the coil geometrical parameters—including coil pitch, diameter, and height—are also considered. Results indicate that conduction is the dominant heat transfer mechanism at the initial stage of the melting process. Increasing either the inlet temperature or the flowrate shortens the melting time. It is also shown that the coil diameter shows the most pronounced effect on the melting rate compared to the other investigated geometrical parameters.

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