Pillow-plate heat exchangers (PPHEs) represent an innovative and promising alternative to conventional equipment. The waviness of the pillow-plates promotes lateral mixing and turbulence,...
Additively Manufactured Polymer-Encapsulated Phase-Change Material Heat Exchangers for Residential Thermal Energy Storage,"
Pillow-plate heat exchangers (PPHEs) represent an innovative and promising alternative to conventional equipment. The waviness of the pillow-plates promotes lateral mixing and turbulence,...
In this paper, the heat exchanger structure and HTF parameters of a plate-type latent heat thermal energy storage (LHTES) heat exchanger were investigated through
Thermal energy storage heat exchanger utilizing PCMs is designed and built. Optimal plate-plate spacing is found to achieve maximum system performance. Effectiveness greater than 80% at 4795 W power output was achieved. The number of modular units is found for a targeted heat storage capacity.
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the charging/discharging process due to reduced thermal resistances. The improved heat transfer efficiency also allows the use of SL-PCMs that have relatively low thermal conductivity but high latent heat, which improves the energy storage density. In addition, the size and weight of a DCHEX is appreciably smaller than that of a conventional
Important innovations in coil-wound and plate-fin heat exchanger design and simulation methods are reviewed among others, while special attention is given to regenerators as a prospective component of cryogenic energy storage systems. This review also reveals that the geographical spread of research and development activities has recently expanded from well
HTF ows through roll-bonded plates to exchange heat with the PCM. This design signicantly increases the effectiveness of the system and removes the risk of deformation during the
Additively Manufactured Polymer-Encapsulated Phase-Change Material Heat Exchangers for Residential Thermal Energy Storage,"
The study presents an experimental investigation of a thermal energy storage vessel for load-shifting purposes. The new heat storage vessel is a plate-type heat exchanger unit with water as the working fluid and a phase change
HTF ows through roll-bonded plates to exchange heat with the PCM. This design signicantly increases the effectiveness of the system and removes the risk of deformation during the charging and discharging processes. A comparison between this plate-type TES and a conventional storage system shows up to 83.1 % enhancement in the system''s ef -
In this paper, the heat exchanger structure and HTF parameters of a plate-type latent heat thermal energy storage (LHTES) heat exchanger were investigated through experiments and simulations. From the experimental tests, it was observed that thermocouples accelerated the melting process of paraffin by 6 % on average for a single LHTES plate
The plate heat exchanger thermal energy storage system is recognized as a highly efcient form of latent heat thermal energy storage. However, existing studies show that the efciency and performance of these thermal energy storage systems are signicantly affected by the design variables, indicating the need of optimization studies. This investigation thus conducts a
Thermal energy storage heat exchanger utilizing PCMs is designed and built. Optimal plate-plate spacing is found to achieve maximum system performance. Effectiveness greater than 80% at 4795 W power output was achieved. The number of modular units is
The study presents an experimental investigation of a thermal energy storage vessel for load-shifting purposes. The new heat storage vessel is a plate-type heat exchanger unit with water as the working fluid and a phase change material (PCM) as the
The CTES unit is composed of a stainless steel container filled with water as the latent storage medium and fitted with a pillow plate heat exchanger. The refrigerant (CO 2) circulates within the heat exchanger to transfer heat with the storage medium. The current study demonstrates the feasibility of implementing a latent CTES unit directly
The MHIHHO algorithm optimizes the charging pile''''s discharge power and discharge time, as well as the energy storage''''s charging and discharging rates and times, to Schematic representation of one of 18 modules that connected in-series makes up the resulting plate-based latent heat thermal energy storage (LHTES) system
Executive Summary: The purpose of this study is to experimentally investigate the thermal performance of an innovative thermal energy storage (TES) system that combines the
Heat storage is key to reducing the mismatch between energy supply and demand. The performance of thermal energy storage heat exchangers is determined by the exchanger structure and the heat transfer fluid (HTF) parameters. In this paper, the heat exchanger structure and HTF parameters of a plate-type latent heat thermal energy storage
This paper proposes a novel latent heat storage heat exchanger integrated heat supply and storage to address the intensity mismatch of renewable energy. Using experimental data in published literature validates the developed two-dimensional mathematical model. The thermal performance of the new device using paraffin RT50 as PCM is studied and analyzed
The research is focused on the Latent Heat Thermal Energy Storage of the Plate Heat Exchanger. They modelled the experiment with computational fluid dynamics simulations and explained the results during charging and discharging. Water was used as the HTF. According to the study results, they recommended that HTF should be sent from the top
This study proposes a modified plate heat exchanger thermal energy storage system (PHETES). An experimentally validated numerical model for the PHETES is
Executive Summary: The purpose of this study is to experimentally investigate the thermal performance of an innovative thermal energy storage (TES) system that combines the advantages of the phase-change material (PCM)/graphite foam latent-heat TES medium developed at Argonne National Laboratory (Argonne) and the internally supported plate-fin (...
The new heat storage vessel is a plate-type heat exchanger unit with water as the working fluid and a phase change material (PCM) as the energy storage medium.
The facility comprises two independent systems to produce hot and cold water. Each system includes a primary circuit for thermal energy production and a secondary circuit for connection to a prototype. Energy transfer between the primary and secondary circuits can occur instantly through a plate heat exchanger or via a 300-L thermal storage tank.
Plate type heat exchanger for thermal energy storage and load shifting using phase change material Energy Convers. Manag., 181 ( 2019), pp. 120 - 132, 10.1016/j.enconman.2018.12.013 Experimental study of the thermal performance of a novel plate type heat exchanger with phase change material
Specifications of the energy storage heat exchanger. The PCM chosen (Hexadecane) for the heat exchanger has latent heat of 238.4 J/g which equates to a total latent heat thermal capacity of 114,432.0 kJ or 108,460.6 Btu for a single heat exchanger unit.
Pillow-plate heat exchangers (PPHEs) represent an innovative and promising alternative to conventional equipment. The waviness of the pillow-plates promotes lateral mixing and turbulence, which results in a good thermo-hydraulic performance, offering a significant energy-saving potential.
Experimental study of the thermal performance of a novel plate type heat exchanger with phase change material A numerical investigation of the melting heat transfer characteristics of phase change materials in different plate heat exchanger (latent heat thermal energy storage) systems
An experimentally validated numerical model for the PHETES is presented. Plate-type thermal energy storage systems (PTESs) have been proposed to mitigate the effect of the low thermal conductivity of phase change materials on the performance and efficiency of thermal energy storage systems.
PHETES’ thermal energy storage capacity per volume unit with various geometries and Tdead = 20 °C. 5.2.3. Effectiveness and efficiency The CFD model shows that the value of efficiency for the PHETES with Geometry 1 is 0.68, while this parameter in Geometries 2 and 3 is 0.558, and 0.4789, respectively.
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