Results 21 to 30 of about 102,561 (167)

Energy and exergy efficiency of a daily heat storage unit for buildings heating

open access: yesJournal of Renewable Energies, 2023
This paper deals with a daily solar storage system conceived and built in Laboratoire de Maîtrise des Technologies de l’Energie (LMTE, Borj Cedria). This system consists mainly of (i) a heat storage unit which consists of a wooden case with dimension of 5 m3 (5 m x 1 m x 1 m) filed with fin sand, (ii) a heat collection unit which consists of 5 m2 of ...
M. Hazami   +4 more
openaire   +2 more sources

Examination of Efficient Operation Method of ATES System by Comparison Operation with WTES System of Existent Heat Storage System

open access: yesApplied Sciences, 2021
Aquifer thermal energy storage (ATES) system is widely used mainly in Europe and USA. In this paper, we examined the efficient operation method of ATES by comparing it with the water thermal energy storage (WTES) system of an existent thermal energy ...
Jewon Oh   +3 more
doaj   +1 more source

Study of Low-Temperature Heat Accumulation in Sensible and Latent Thermal Energy Storage Systems for Greenhouse Applications [PDF]

open access: yesProblems of the Regional Energetics
The main objective of this study is to determine the energy efficiency of a sensible heat storage system employing a dense crushed stone bed in a vertical heat exchange channel, as well as a latent heat storage system using a phase change material based ...
Mukminov I.   +5 more
doaj   +1 more source

Numerical Investigation of Heat Transfer Performance and Structural Optimization of Fan-Shaped Finned Tube Heat Exchanger

open access: yesEnergies, 2022
Latent heat storage technology is widely used in solar power generation. Aiming to enhance the energy utilization rate to a greater extent, an innovative fan-shaped structure has been proposed to construct the metal fins of the shell-and-tube thermal ...
Qianjun Mao, Xinlei Hu, Yuanyuan Zhu
doaj   +1 more source

Effects of operational control conditions on the seasonal energy storage performance of borehole thermal energy storage (BTES) system

open access: yesCase Studies in Thermal Engineering
To explore the effects of operation control conditions on the seasonal energy storage performance of borehole thermal energy storage (BTES) system, a three-dimensional model of the BTES is built and validated by experiments.
Weibo Yang   +3 more
doaj   +1 more source

Investigation on heat transfer performance of flat plate micro-heat pipe phase change heat storage/release device

open access: yesGreen Energy and Resources
In the domains of low/zero carbon energy, the ship energy storage system, coupled with phase-change storage and release technology, holds significant importance.
Peiqin Dong   +4 more
doaj   +1 more source

Thermal Performance Analysis on the Seasonal Heat Storage by Deep Borehole Heat Exchanger with the Extended Finite Line Source Model

open access: yesEnergies, 2022
Deep borehole heat exchanger is promising and competitive for seasonal heat storage in the limited space underground with great efficiency. However, seasonal heat storage performance of the essentially deep borehole heat exchanger reaching kilometers ...
Xiangxi Qin   +4 more
doaj   +1 more source

Finite time thermodynamics analysis and research of pulsating heat pipe cold storage device

open access: yesEnergy Storage and Saving, 2022
Phase change energy storage technology can effectively solve the energy mismatch in space and time. There are many disadvantages of phase change materials (PCMs), such as high supercooling, phase separation and poor heat transfer performance.
Xiaofeng Xu, Xuelai Zhang
doaj   +1 more source

Investigating the Efficiency of a Heat Recovery–Storage System Using Heat Pipes and Phase Change Materials

open access: yesMaterials, 2023
This study presents an experimental and numerical investigation into the efficiency of a two-stage heat recovery–storage system for reducing the thermal energy losses in the industry. The system is designed to recover and store waste thermal energy from residual fluids using heat pipes for recovery and an environmentally friendly phase change material ...
Vizitiu, Robert Stefan   +6 more
openaire   +2 more sources

Efficiency Gains of Photovoltaic System Using Latent Heat Thermal Energy Storage

open access: yesEnergy Procedia, 2017
This paper presents experimental assessments of the thermal and electrical performance of photovoltaic (PV) system by comparing the latent heat-cooled PV panel with the naturally-cooled equivalent. It is commonly known that the energy conversion efficiency of the PV cells declines with the increment of the PV cell temperature, at a typical value of 0.5%
Tan, Lippong   +4 more
openaire   +2 more sources

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