scholarly journals Analysis of different operating strategies of thermal energy storage with radiant cooling system

2020 ◽  
Author(s):  
Rana Veer Pratap Singh ◽  
Jyotirmay Mathur ◽  
Mahabir Bhandari
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Cooling System ◽  
Radiant Cooling ◽  
Operating Strategies

PERFORMANCE ANALYSIS OF PERSONALIZED RADIANT COOLING SYSTEM INTEGRATED WITH THERMAL ENERGY STORAGE

2018 ◽  
Author(s):  
Chandra Sekhar Chinnapatnam ◽  
Jyotirmay Mathur ◽  
Mahabir Bhandari ◽  
Prateek Srivastava ◽  
Yasin Khan ◽  
...  
Keyword(s):  
Energy Storage ◽  
Performance Analysis ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Cooling System ◽  
Radiant Cooling

scholarly journals Numerical Modeling of the Interference of Thermally Unbalanced Aquifer Thermal Energy Storage Systems in Brussels (Belgium)

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6241
Author(s):  
Manon Bulté ◽  
Thierry Duren ◽  
Olivier Bouhon ◽  
Estelle Petitclerc ◽  
Mathieu Agniel ◽  
...  
Keyword(s):  
Energy Storage ◽  
Groundwater Flow ◽  
Heat Transport ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Cold Water ◽  
Cooling System ◽  
Joint Operation ◽  
Groundwater Temperature ◽  
Aquifer Thermal Energy Storage

A numerical model was built using FEFLOW® to simulate groundwater flow and heat transport in a confined aquifer in Brussels where two Aquifer Thermal Energy Storage (ATES) systems were installed. These systems are operating in adjacent buildings and exploit the same aquifer made up of mixed sandy and silty sublayers. The model was calibrated for groundwater flow and partially for heat transport. Several scenarios were considered to determine if the two ATES systems were interfering. The results showed that a significant imbalance between the injection of warm and cold water in the first installed ATES system led to the occurrence of a heat plume spreading more and more over the years. This plume eventually reached the cold wells of the same installation. The temperature, therefore, increased in warm and cold wells and the efficiency of the building’s cooling system decreased. When the second ATES system began to be operational, the simulated results showed that, even if the heat plumes of the two systems had come into contact, the influence of the second system on the first one was negligible during the first two years of joint operation. For a longer modeled period, simulated results pointed out that the joint operation of the two ATES systems was not adapted to balance, in the long term, the quantity of warm and cold water injected in the aquifer. The groundwater temperature would rise inexorably in the warm and cold wells of both systems. The heat plumes would spread more and more over the years at the expense of the efficiency of both systems, especially concerning building’s cooling with stored cold groundwater.

Thermoelectric Heating and Cooling System With Integrated Thermal Energy Storage (Thermal Battery) for Electric Vehicles

2018 ◽  
Author(s):  
Annika Hacker ◽  
Ravi Gorthala ◽  
Maria-Isabel Carnasciali
Keyword(s):  
Energy Storage ◽  
Electric Vehicles ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Air Conditioning ◽  
Cooling System ◽  
Conventional Heating ◽  
Attractive Alternative ◽  
Thermal Battery ◽  
Driving Range

Electric vehicles (EVs) are receiving more attention these days because they are environmentally friendly (no emissions) and are much quieter than internal combustion engine vehicles with rapidly decreasing prices. One of the serious limitations of EVs is the limited driving range. When conventional heating and air conditioning systems are used in winter and summer, the driving range is reduced further because they consume a lot of electric energy stored in the batteries. A thermoelectric cooling system integrated with thermal energy storage has been identified as an attractive alternative to traditional air conditioning in electric vehicles. The main goal of such a system is to minimize the amount of electricity that is drawn for air-conditioning from the electric battery of the vehicle, thus eliminating further reduction in driving range. Not only is the alternative more light weight than the conventional vapor compression based air-conditioning system, it also reduces the amount of electricity drawn from the battery. The proposed system is comprised of thermal energy storage (TES) employing phase change materials (PCMs), thermoelectric electric modules, and a fan. The TES, also referred to as a thermal battery here, can be charged before at home or at a charging station before driving like the electric battery, and is discharged when used in driving. This study involved the design and development of a TES for EVs employing computational fluid dynamics and heat transfer analyses. The model includes all the key components such as thermoelectric (Peltier) modules, heat sinks and the PCM. Various simulations for thermal battery charging and discharging have been conducted to demonstrate the feasibility of incorporating TES coupled with thermoelectric modules.

scholarly journals Preliminary investigation of thermal behaviour of PCM based latent heat thermal energy storage

2018 ◽  
Vol 32 ◽  
pp. 01017
Author(s):  
Octavian G. Pop ◽  
Lucian Fechete Tutunaru ◽  
Florin Bode ◽  
Mugur C. Balan
Keyword(s):  
Energy Consumption ◽  
Energy Storage ◽  
Latent Heat ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Cooling System ◽  
Air Cooling ◽  
Air Velocity ◽  
Air Inlet ◽  
Air Cooling System

Solid-liquid phase change is used to accumulate and release cold in latent heat thermal energy storage (LHTES) in order to reduce energy consumption of air cooling system in buildings. The storing capacity of the LHTES depends greatly on the exterior air temperatures during the summer nights. One approach in intensifying heat transfer is by increasing the air’s velocity. A LHTES was designed to be integrated in the air cooling system of a building located in Bucharest, during the month of July. This study presents a numerical investigation concerning the impact of air inlet temperatures and air velocity on the formation of solid PCM, on the cold storing capacity and energy consumption of the LHTES. The peak amount of accumulated cold is reached at different air velocities depending on air inlet temperature. For inlet temperatures of 14°C and 15°C, an increase of air velocity above 50% will not lead to higher amounts of cold being stored. For Bucharest during the hottest night of the year, a 100 % increase in air velocity will result in 5.02% more cold being stored, at an increase in electrical energy consumption of 25.30%, when compared to the reference values.

scholarly journals Advancements in Thermal Energy Storage System by Applications of Nanofluid Based Solar Collector: A Review

2020 ◽  
Vol 24 (1) ◽  
pp. 310-340
Author(s):  
Vednath P. Kalbande ◽  
Pramod V. Walke ◽  
C. V. M. Kriplani
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Solar Collector ◽  
Cooling System ◽  
Storage System ◽  
Thermal Storage ◽  
Energy Storage System ◽  
Research Progress ◽  
Thermal Energy Storage System

AbstractIn the recent years, a lot of research has been carried out in the field of nanofluid based solar collector, leading towards the enhancement of working efficiency even at low atmospheric temperature or at low sunlight levels regions of the world. The present review pertains to the research progress related to the performance execution of solar collector using nanofluid. It is observed that the thermal energy storage system (TES), using solar collector, is a useful device for storing sensible and latent heat in a unit volume. Nanofluid plays an important role in various thermal applications such as heat exchanger, solar power generation, automotive industries, electronic cooling system, etc. The nanoparticles find the use in various industrial applications because of its properties, such as thermal, mechanical, optical and electrical. Most of the investigations carried out earlier on the applications of nanofluid in solar energy are related to their uses in the solar collector and thermal storage system. The parabolic solar collector using nanofluid is still a challenge. This article presents an exhaustive review of thermal storage system using nanofluid based solar collector and a scope of using nanofluid based solar collector for performance enhancement.

Cold Thermal Energy Storage

2017 ◽  
pp. 93-123
Author(s):  
Franc Franc Kosi ◽  
Branislav Zivkovic ◽  
Mirko S. Komatina ◽  
Dragi Antonijevic ◽  
Mohamed Abdul Galil ◽  
...  
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Storage System ◽  
Thermal Storage ◽  
Cooling Load ◽  
Air Conditioning System ◽  
Operational Characteristics ◽  
Calculated Load ◽  
Operating Strategies

The chapter gives an overview of cold thermal energy storage (CTES) technologies. Benefits as well as classification and operating strategies of CTES are discussed. Design consideration and sizing strategies based on calculated load profile for design day is presented. Some recommendation concerning designing of CTES equipment are given. Special attention was paid to the analysis of specific features of heat transfer phenomena in ice storage tank including the assessment of the duration and the rate of ice formation and melting. The methodology of sizing components of the ice thermal storage system included in an air conditioning system for an office building situated in hot wet and dry climate are presented. Based on hourly cooling load calculation that was carried out using Carrier's Hourly Analysis Program, sizing of ice thermal storage system for different operating strategies included full, chiller priority and ice priority storage operation for the design day are presented. Finally, an analysis of some operational characteristics of the system are analyzed.

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