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At 08:00 am (start moment of the storage process), water circulates in the solar collector, receives thermal energy from the absorber area, and transfers part of this solar thermal energy to cascaded PCMs/single-PCM filled in
investigation of a spiral tube embedded latent thermal energy storage tank using paraffin as PCM. Energy Procedia, 105, 4543‑4548. doi:10.1016/j.egypro.2017.03.974
Low energy storage rate and unbalanced thermophysical characteristics existed in the vertical shell-and-tube heat storage tubes. To improve thermal properties and melting uniformity, this paper proposed a non-uniform angled fin type considering the optimization by the non-uniform arrangement and angled fins with small angles.
Consequently, integrating spiral tube structures into phase change energy storage systems holds significant potential for improving thermal storage performance. A lot of scholars have conducted extensive research on spiral shell-tube energy storage systems, and a brief summary of these studies is presented in Table 1 .
The development of a solar baking oven with heat storage material enables the baking of food both during the day and at night without affecting the depletion of the ozone
Charging characteristics of finned thermal energy storage tube under variable rotation. October 2023. Applied Thermal Engineering. DOI: 10.1016/j.applthermaleng.2023.121887. Authors: Junfei Guo
Utilization of thermal energy from charged thermal energy storage systems for cooking purposes has been studied [24], [25], [26]. A novel indirect solar cooker with outdoor elliptical cross section, wickless heat pipes, flat plate solar collector and integrated indoor phase change material (PCM) thermal energy storage was designed,
Thermal energy storage (TES) is crucial in the efficient utilization and stable supply of renewable energy. This study aims to enhance the performance of shell-and-tube latent heat thermal energy storage (LHTES) units, particularly addressing the issue of the significant melting dead zones at the bottom, which are responsible for the long charging
Melting enhancement in triplex-tube latent heat energy storage system using nanoparticles-metal foam combination Appl. Energy, 191 (2017), pp. 22-34, 10.1016/j.apenergy.2016.11.036 View PDF View article View in Scopus Google Scholar [38] Z.
This work proposes a novel type of shell and tube latent thermal energy storage unit (LTESU). Effects of the thermal conductivity of PCM, the inlet temperature of heat transfer fluid (HTF), the inlet velocity of HTF and fin layout (fin length and distribution) on the thermal performance and exergy efficiency of the LTESU are numerically
Combining solar cookers with a TES system enables cooking during periods when the sun is not available. TES can be classified into three main categories
The majority of the world''s population still cooks using biofuels like wood, agricultural leftovers, and dried animal dung, which lacks the ability to cook efficiently, predictably, safely, and most importantly cleanly. There is an urgent need to develop an alternate, acceptable, hygienic, and low-cost method of cooking, which can be met by
Solidification enhancement with multiple PCMs, cascaded metal foam and nanoparticles in the shell-and-tube energy storage system Appl. Energy, 257 (2020), Article 113993 View PDF View article View in Scopus Google Scholar [41] Y.
Unleashing hydrogen potential: baking soda as the key to renewable energy storage – scitechdaily. PNNL scientists investigate the promising properties of a common, Earth-abundant salt. In a world of continuously warmer temperatures, a growing consensus demands that energy sources have zero, or next-to-zero, carbon emissions.
The aim of this research was to develop and test a tube type direct solar oven that a potential to be easily fabricated and largely produced at a low cost locally in
A novel indoor solar cooker with an innovative arrangement of evacuated tube-based compound concentrating parabolic (CPC) collectors with a cascaded latent heat thermal energy storage
The novelty of this research work is the exergo-economic analysis (including the cost of exergy destruction and exergy loss) of metal hydride based thermal energy storage system coupled with a solar bakery unit for the screening of metal hydride pairs (Case 1: pure MgH 2 /LaNi 5 & Case 2: V 2 O 5 doped MgH 2 /LaNi 5) for
To study the effect of inner tube diameter on the energy storage effectiveness, 9 parametric studies with di varying from 2mm to 10mm were performed. The effective thermal conductivity was kept as k eff = 4 W / ( m · K). The outer tube diameter was d o = 12 mm and the tube length was L = 5 m.
The latent heat thermal energy storage (LHTES) technology based on solid-liquid phase change material (PCM) is of great significance for the efficient utilization of thermal energy. To address the issues of slow thermal response and non-uniform melting of the LHTES technology, a hybrid heat transfer enhancement method combined with finned metal foam
More than 50% of this energy goes entirely on baking Injera. Injera the national food of the country demands 180-220 oC to be well cooked. In this article; Injera baking with solar energy on off-focus
Abstract. This study investigates the energy and exergy analysis of eutectic PCM melting (80% melting) within a numerically simulated triplex tube latent heat
Abstract. The thermal performance of a newly developed cooking unit integrated with a thermal energy storage (TES) system suitable for solar thermal
Experimental and numerical investigation of melting/solidification of nano-enhanced phase change materials in shell & tube thermal energy storage systems Journal of Energy Storage, Volume 47, 2022, Article 103561 H. Masoumi, , S.M. Mirfendereski
To optimize the utilization of solar energy in the latent heat thermal energy storage (LHTES) system, this study conducts exergy analysis on a paraffin-solar water shell and tube unit established in the
Alexandre Lucas, Sara Golmaryami, Salvador Carvalhosa. Article 112134. View PDF. Article preview. Read the latest articles of Journal of Energy Storage at ScienceDirect , Elsevier''s leading platform of peer-reviewed scholarly literature.
Injera, a processed food of different cereals, teff, millet, sorghum, maize, wheat, rice etc., or. combinations of th ose passed through fermentation and rigorous baking process, is the widely and
Using a shell-tube shape, Fig. 2 depicts the design of a Latent Heat Thermal Energy Storage (LHTES) device. The heat transfer fluid, water, enters the tube at a pressure of P in and leaves at the top outlet at zero pressure. The wall thickness of the tube is t, and its
Efficient energy storage rates are crucial for latent heat energy storage units. Building on previous studies highlighting the benefits of shell and helical tube configurations, which enhance energy storage rates through increased heat exchange areas, this research introduces a novel configuration featuring a combination of conical
As an alternative to traditional baking processes, a direct solar fryer for Injera baking application is created. A 1,8 m rim diameter coating with an aluminum layer is used in the solar fryer system. The machine is based on a bakery frame in aluminum with a diameter of 550 mm and a width of 12.5 mm.
Energy storage is the capture of energy produced at one time for use at a later time [1] to reduce imbalances between energy demand and energy production. A device that stores energy is generally called an accumulator or battery. Energy comes in multiple forms including radiation, chemical, gravitational potential, electrical potential
To address that, in 2021 the DOE announced its Energy Earthshots initiative, a series of six steps to underwrite breakthroughs in clean-energy technology. Introduced first was the Hydrogen Shot, a quest to reduce the cost of hydrogen to from $5 to $1 per kilogram in a decade"an 80 percent reduction.
Thermal energy storage (TES) tanks of PVT systems with high charging efficiency and consistent thermal safety might achieve efficient utilization of solar energy for building. A new variable rotational strategy has been proposed to optimize the charging characteristics for TES tubes, taking into consideration the non-uniformity of melting.
Ethiopia with a population of about 85 million meets 96% of its energy needs with bio-mass, charcoal, wood, animal dung and plant residues. More than 50% of this energy goes entirely on baking Injera. Injera the national food of the country demands 180-220 °C to be well cooked. In this article; Injera baking with solar energy on off-focus
The total energy stored in the sensible heat storage medium inside the evacuated tube during a time interval of 1800 s is expressed as (5) E s = m C p, medium T medium, j + 1 − T medium, j Where T medium,i is the
Accelerated melting of PCM in energy storage systems via novel configuration of fins in the triplex-tube heat exchanger International Journal of Heat and Mass Transfer, Volume 124, 2018, pp. 663-676 Jasim M. Mahdi, , Emmanuel C. Nsofor
In this study, the latent heat thermal energy storage system of the shell-and-tube type is analyzed experimentally. A novel design for the storage unit whose geometry is consistent with the melting/solidification characteristics of phase change materials (PCMs) is introduced. Three kinds of paraffin with different melting temperatures
(2004) [22] using an evacuated tube solar collector that was equipped with phase change material (PCM) storage, studied the heat performance of a prototype solar cooker. The design comprised two different parts which were energy collection and cooking
Thermal analysis of baking process in the baking chamber showed variations in rate of energy utilization, energy utilization ratio, exergy losses and exergy
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