YAO Shouguang et al. Evaluation and Optimization of the Thermal Storage Performance of a Triplex-Tube Thermal Energy 2049 Nomenclature AMush mushy region constant/kg·(m 3·s)–1 V velocity vector Cp specific heat/J·(kg·K) –1 W r V-shaped fin thickness/mm
There are several conventional heat storage methods: sensible heat storage, phase change heat storage, and thermochemical reaction heat storage [4]. Phase change heat storage is the use of phase change materials to absorb or release the latent heat of phase change when its state of matter changes to achieve the storage and
Classification of material used for hexagonal steel pipes: 20, 45, 16 manganese and other different materials have different uses. Hexagon steel tubing is an outer hexagonal steel pipe. It is a kind of special-shaped steel pipe. It is mostly used in the processing of nuts and mechanical fittings. Hollow hexagonal bar is the general name of the
Energy efficiency issues are being focused on the growing concern of global warming and environmental pollution. The high-temperature heat pipe (HTHP) is an effective and environmental-friendly heat transfer device employed in many industries, including solar power generation, high-temperature flue gas waste heat recovery,
This paper presents a detection method for the inner wall circumferential cracks in the special-shaped pipes with small diameter-depth ratio using surface waves by placing the transducer at the end face. The scattering characteristic of surface waves at the vertical edge that the maximum of transmission coefficient can be delivered only when
In the present study, V-shaped fin was attached to the heat pipe, as illustrated in Fig. 1, and the system was then immersed into the LHTESS as illustrated in Fig. 2.The space between finned heat pipe and the enclosure wall
Hot HTF transfer heat into the thermal storage unit through the bottom of the hetero-shaped pipe and cold HTF absorb heat from the thermal storage unit through the top of the hetero-shaped pipe. Conductive silicone is used to cover the clearance between the new-type flat micro-heat pipe and the flat fin to reduce thermal contact
This work investigates a double-pipe thermal storage system with round fins in a Y form (shown in Fig. 1 A), comparing Y-shaped fins to conventional round fins and the finless design. The 2D axisymmetric approach is utilized to simplify the 3D method because of the architecture of the unit and the absence of radial flow in a liquid PCM, as
Abo-Elfadl et al. (2020) conducted energy and exergy analysis of reflector integrated evacuated tube heat pipe solar collector with water as thermal energy storage medium. The results show that the addition of upper and lower reflectors to the evacuated tube heat pipe solar collector reduced the losses due to convection and improved the
The key technical parameters of the energy storage system, such as the maglev train''s weight ratio and speed per hour, the mode of levitation and guidance, the car-track
The high temperature heat pipe reactor (HTPR) driven by solar energy via steam methane reforming opens up a new avenue to produce hydrogen as aviation fuel with low carbon emission.
On the other hand, energy storage capacity is desired to be maximized in order to achieve a system with the highest energy storage capacity. 5. Results and discussion5.1. The reason of adding fin to the heat pipe Energy storage and retrieval in
4 Vibration characteristics of foam flow in special‐shaped pipeline. The vibration caused by foam flowing in long-distance pipeline leads to pipeline damage. The pipeline vibration signal is collected and processed by LMS dynamic system collector and piezoelectric vibration acceleration sensor.
This work investigates a double-pipe thermal storage system with round fins in a Y form (shown in Fig. 1A), comparing Y-shaped fins to conventional round fins and the finless design. The 2D axisymmetric approach is utilized to simplify the 3D method because of the architecture of the unit and the absence of radial flow in a liquid PCM, as
Frozen start-up performance of a high temperature special shaped heat pipe suitable for solar thermochemical reactors. Tingting Ma, Yuezhao Zhu, +3 authors.
To overcome the weak thermal conduction of the phase change materials (PCM), This investigation aims to study the effect of circular Y-shaped fins added to a two-pipe latent heat
Special-shaped steel pipes generally have a penetrating moment of inertia and section modulus and have bending and torsion strength, which can greatly reduce structural weight and save steel. It is widely used in
Lion Storage has received a construction permit for a 347MW/1,457MW BESS project while Giga Storage hopes to start construction on a similarly sized one this year, representing a major step
Read this article. Solar energy can be transformed to storable chemical fuels through high temperature thermochemical processes driven by concentrated solar
Loop heat pipe (LHP) encased in phase change material (PCM) incorporated annular to catalytic converter (CC) is proposed to augment the performance
YAO Shouguang*, ZUO Min, HUANG Xinyu. Abstract: Adding fins to a shell-and-tube phase change thermal storage is a simple and effective way to enhance the performance of the phase change heat storage unit, and the proper arrangement of the fins is essential to enhance the performance of the storage unit.
Energy balance of the heat pipe-PCM module during a time interval Δt can be investigated as follows (Weng et al., 2011): (3) Qp = Q m + Q s + Q t where Q p is the heat input by the power supply, and Q m is equal to
Phase-change materials (PCMs) are promising in energy storage. However, the low thermal conductivity of a PCM limits its practical application. A tree-shaped layout heat pipe
Heat pipe (HP) is a passive technique for conduction of heat from source to sink over a large distances. Being very efficient than pure metal conductor of which it is made, It has a broad spectrum of applications, from very low to very high temperatures. The discussion in this paper is limited to low and medium temperature heat pipe integrated
The startup of a high temperature cylindrical heat pipe is often followed the flat-front model [26], [27], [28]. The temperature distribution variation in startup of this type heat pipe is as shown in Fig. 5. The abscissa measures axial length of
From Fig. 10, the pipe heat loss coefficient (ζ) decreases with the depth (n) of T-shaped pipe network (i.e., the size of the entire cold collection and storage system) when the diameter ratio of insulation to pipe is constant, which
Phase-change materials (PCMs) are promising in energy storage. However, the low thermal conductivity of a PCM limits its practical application. A tree-shaped layout heat
Thermal energy storage (TES) emerges as an important technology to overcome the time, space, and intensity mismatches between energy supply and demand [4, 5], and also plays a broad and critical role in heating or
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A special-shaped heat pipe tailored to the FPSG''s hot head was designed. Theoretical and experimental research was carried out to confirm the feasibility of this design. The conclusions are as follows: 1. The
In this work, we proposed a novel heat pipe tubular reactor based on the high-temperature heat pipe, i.e., a high-temperature heat pipe reactor (HTPR),
One effective way to bridge the gap between energy supply and energy demand is to use thermal energy storage (TES) [2]. TES temporarily stores thermal energy for later use. Sensible heat energy storage (SHES) using the solid or liquid medium, latent heat storage using phase change material (PCM), and chemical heat storage using a
The goal of this Special Issue is to bring together innovative developments, technologies and solutions in the field of thermal energy storage systems. The main focus will be on original and unpublished research and review articles in areas including, but not limited to, the following:
Here, a special-shaped heat pipe is designed to match the heat head. In this design, the surface of the heat head was used as the condensing surface and a "bridge-type" composite artery was used to transfer the liquid sodium from the condensing surface to the evaporating surface, which could greatly simplify the structure and improve the
The melting process was accelerated by 87% when the HTF temperature was higher (348 J o u r n a l P r e-p r o o f K). Finally, TESS with four Y-shaped fins was found to be the most effective as it
Performance evaluation of a circular-elliptical double-pipe thermal energy storage. .Study on different aspect ratios and angles of the ellipse as the inner tube.
For this end, this paper combines the advantages of maglev technology and vacuum technology, proposes a new type of mechanical large-capacity energy storage
This study aims to present a novel thermal energy storage integrated evacuated tube heat pipe solar air heater suitable for high-temperature applications. A
What is a special-shaped stainless steel pipe? A generic term for stainless steel pipes with different cross-sectional shapes than stainless steel conventional pipes, including welded special-shaped pipes and seamless special-shaped pipes, is stainless steel special-shaped steel pipe. Due to the composition, stainless steel special-shaped tubes are
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