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Energy storage heat exchange tube

A review and prospective of fin design to improve heat transfer

Niyas et al. [137] experimentally tested the performance of a lab-scale latent TES prototype, which used finned tubes and had a heat storage capacity of 2.78 kWh. The heat transfer during the melting process was controlled by natural convection meanwhile the heat transfer regime during the solidification process was mainly controlled by conduction.

A fast reduced model for a shell-and-tube based latent heat

A fast reduced model for a shell-and-tube based latent heat thermal energy storage heat exchanger and its application for cost optimal design by nonlinear programming. Author links open overlay panel Chunjian Pan a, The physical module of a shell and tube latent heat storage exchanger consists of a tube surrounded by a PCM cylinder (Fig. 9

Experimental study of thermal energy storage system for solid

This article first characterizes the thermal properties of RFs. Results show a specific heat capacity of 0.67–0.97 kJ/(kg·°C) within 20–380 °C, with stable thermal properties from 100 to 1000 °C. Then, the heat transfer performance of RFs and heat transfer oil (HTO) in a shell and tube heat exchanger is experimentally investigated.

Performance improvement of a U-tube heat exchanger based

Solid-state hydrogen storage technology using metal hydrides as carriers has great application prospects. This study aims to optimize the heat transfer resistance and absorption kinetics issues encountered in practical applications of LaNi 5-H 2 storage materials in storage reactors. A mathematical model for the hydrogen absorption process in the reactors

Thermal response in thermal energy storage material around heat

In this paper, thermal performance and optimization of shell and tube heat exchanger-based latent heat thermal energy storage system (LHTES) using fins as TCE for medium temperature (<300 °C

An experimental and numerical study on the energy storage and

The shell-and-tube heat exchanger shown in Fig. 2 includes phase change units, refrigerating fluid, and HTF. The shell-and-tube heat exchanger is composed of copper tubes with an outer diameter of 250 mm and a height of 300 mm. It is externally wrapped with a 20-mm-thick insulation foam to reduce heat loss. The phase change unit inside the

Heat Energy Storage Characteristics of a New Type of PCM Heat Exchange Tube

Heat energy storage characteristics of a new type of PCM heat exchange tube was researched, in which it took the traditional double-tube exchanger as the total construction foundation and phase

Numerical investigation of the effect of the number of fins on the

Increasing the inner heat transfer fluid tubes causes an acceleration in the melting process and enhanced heat transport with the addition of the nanoparticle. evaluated the efficiency of a finned multi-tube latent heat thermal energy storage (LHTES) system for a medium-temperature (∼200 °C) solar thermal power plant. In this regard, the

Heat Exchanger – Types, Diagram, Working, Applications,

Disadvantages of shell and tube heat exchanger : Storage Type or Regenerative Heat exchanger. The storage type or regenerative heat exchanger is shown in Figure 14.6. In this heat exchanger energy is stored periodically. Medium is heated or cooled alternatively. The heating period and cooling period constitute 1 (one) cycle.

Heat Transfer Enhancement for PCM Thermal Energy Storage in

This study experimentally investigates the using of a triplex tube heat exchanger (TTHX) with PCM in the middle tube as the thermal energy storage to power a liquid desiccant air-conditioning system.

Experimental study of solid particles in thermal energy storage

The concrete block heat storage system integrates heat exchange tubes permanently embedded within the concrete blocks, enabling the HTF to exchange heat with the concrete. However, concrete is susceptible to cracking during charge/discharge cycles [ 20 ], thereby impacting system operation, and its maximum operating temperature of 400–450 °C

Thermal energy storage, heat transfer, and thermodynamic

Thermal energy storage, heat transfer, and thermodynamic behaviors of nano phase change material in a concentric double tube unit with triple tree fins A combined heat transfer enhancement technique for shell-and-tube latent heat thermal energy storage. Renew. Energy, 202 (2023), pp. 1342-1356. View PDF View article View in Scopus Google

Effect evaluation of heat transfer optimization approach for multi-tube

Compared with sensible heat energy storage, latent heat thermal energy storage system (LHTES) has higher energy storage density. However, the low thermal conductivity of PCM is a major obstacle to achieving more efficient LHTES technology. Therefore, this study uses numerical simulation to evaluate the effectiveness of five enhanced heat transfer methods for LHTESs,

Shell-and-tube type latent heat thermal energy storage:

Due to a high HTF mass flow rate in the heat exchanger tube and the comparatively low heat exchanger surface, the melting process can be assumed to be equal along the whole storage length. Lacroix M (1993) Numerical simulation of a shell-and-tube latent heat thermal energy storage unit. Sol Energy 50:357–367. Article Google Scholar Gong

(PDF) Shell-and-Tube Latent Heat Thermal Energy Storage

Shell-and-tube latent heat thermal energy storage units employ phase change materials to store and release heat at a nearly constant temperature, deliver high effectiveness of heat transfer, as

Thermal performance enhancement of energy storage system

In this work, it is suggested to use the spiral-wired tube, a finned tube with a coiled helical spiral connecting the fins end. The study includes a comparison between three different models of

Heat transfer and heat storage characteristics of calcium

Understanding the mechanisms and characteristics of heat and mass transfer is crucial for optimizing the design and operating parameters of Ca(OH) 2 /CaO fixed bed reactors, thereby improving energy conversion efficiency and storage performance. In this study, a comprehensive physicochemical model of shell-tube thermochemical energy storage (TCES)

Shell-and-Tube Latent Heat Thermal Energy Storage (ST-LHTES)

Inclined ST-LHTES: In inclined shell-and-tube latent heat thermal energy storage (ST-LHTES) device, the axial flow direction of HTF Experimental investigation of the effect of dynamic melting in a cylindrical shell-and-tube heat exchanger using water as PCM. Appl Energy 185:136–145. Article Google Scholar

Low-cost fin-tube heat exchanger design for building thermal energy

Influence of operational and design parameters on the performance of a PCM based heat exchanger for thermal energy storage – a review. J. Energy Storage, 20 (2018), pp. 497-519, 10. Experimental and computational study of melting phase-change material for energy storage in shell and tube heat exchanger. J. Energy Storage, 50 (2022), 10.

Numerical Thermal Analysis of Shell-and-Tube Thermal Energy Storage

The application of concentrating solar power (CSP) technology has enormous potential in generating solar energy, with the thermal energy storage system (TES) performing a crucial role within the overall CSP system [1,2,3] this case, when solar energy demonstrates instability or inadequacy, the thermal energy accumulated inside the Thermal Energy Storage

Energy storage performance improvement of phase change

The study looked at heat transfer augmentation of PCM in a shell and tube heat exchanger using longitudinal fins in the heat transfer tube. The results of the study show that melting and solidification times can be reduced by up to 25.42 % and 43.6 % respectively.

A critical review on phase change materials (PCM) based heat exchanger

Generally, heat energy storage capacity of PCM-based LHS system expressed [2] as (1) Q = and decreased installation area if the plate-and-frame heat exchanger can be modified to resemble a shell-and-tube heat exchanger without losing its inherent benefits in heat transfer improvement [116]. With welded plate technology, plate-and-frame

Thermal energy storage characteristics of finned tubes with

To further enhance the heat transfer to boost the overall energy storage efficiency and reduce the apparent inhomogeneity of melting characteristics, fins with gradient height are

Performance optimization of a U-tube heat exchanger type

The initial reaction conditions for U-tube heat exchanger type reactors with and without fins are the same, including an initial reaction temperature Design and operating evaluation of a finned shell-and-tube thermal energy storage unit filled with metal foam. Appl Energy, 261 (2020), Article 114385. View PDF View article View in Scopus

Performance study of a thermochemical energy storage reactor

This novel system integrates a TCES reactor, an internal water-to-air microchannel tube heat exchanger (HEX), and an external air-to-air heat recovery unit (HRU) to revolutionize the way of managing and harnessing thermal energy of open-type TCES system. Energy storage of low potential heat using lithium hydroxide based sorbent for domestic

Experimental investigation of thermal performance in a shell-and-tube

Because of the large temperature differential between the PCM and the HTF tube in the first 5 min of the experiment, there was a high heat transfer rate. As the thermal energy storage unit absorbed heat, the temperature difference between the HTF and the PCM gradually decreased, resulting in a reduced heat transfer rate, as shown in Fig. 16 (a

Enhanced heat transfer in a PCM shell-and-tube thermal energy storage

The dominant technology among latent heat thermal energy storage methods relies on solid-liquid phase change. Since the primary disadvantage of phase change materials is low thermal conductivity

Heat transfer enhancement technology for fins in phase change energy

Compared with sensible heat energy storage and thermochemical energy storage, phase change energy storage has more advantages in practical applications: also studied the length optimization of circular fins in a vertically placed cylindrical shell and tube heat exchanger, and the results showed that as the flow direction of the HTF changed

Frontiers | Experimental Study on the Heat Transfer

Natural convection in the latent heat energy storage device can be significantly enhanced and has obvious chaotic characteristics when the fin length ratio was less than 1. Han et al. (Han et al., 2017) numerically studied the heat storage performance of shell-and-tube phase change energy storage devices. It is found that the increase of HTF

Study on the heat transfer characteristics of a shell-and-tube

So the discussion of the influence on multi-tube heat exchanger by natural convective is conductive to the enhancement of heat transfer and reduction in charging time. In this paper, a CFD model on the shell-and-tube phase change energy storage heat

Design of reactive particle fluidized bed heat exchangers for

A relatively conservative fluidization number, N f = 5, was chosen because it ensures a high bed-to-tube heat transfer coefficient while minimizing the particle-induced erosion of heat exchanger tubes. In heat exchangers, for thermochemical and sensible heat release, the additional absorbed gas introduced serves to fluidize the particles.

Energy storage heat exchange tube [PDF]

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