Jiang energy storage heat exchanger

How effective is a heat exchanger?

As mentioned in Section 2.5, the effectiveness of heat exchanger is usually regarded as an ideal value in previous studies, that is, it is set to be equal in energy storage and energy release phases and is not affected by other parameters.

How does pressure affect heat exchanger performance?

The pressure loss in the effectiveness of heat exchanger also affects heat exchanger performance. In addition, due to changes in the pressure in compressed air storage during energy storage and release process and changes in operating conditions, the air mass flow also changes, which also leads to changes in the effectiveness of heat exchanger.

Do enhanced heat transfer techniques improve the performance of heat exchangers?

The adoption of enhanced heat transfer techniques enhances the performance of the heat exchangers thereby enabling energy saving. The review paper is organized as follows: Section 2 explains the designs and constructions of double pipe, plate heat exchangers, and extended surface heat exchangers.

Can compact heat exchanger design overcome PCM thermal conductivity limitations?

Results show that reducing the PCM-encasement thickness yields substantially better performance than by improving the thermal conductivity, thereby demonstrating the potential for compact heat exchanger design to overcome the PCM thermal conductivity limitations. 1. Sol. Energy Mater.

What are heat exchangers used for?

Among thermal systems, heat exchangers (HEXs) find extensive applications in various domains, including domestic, industrial, and commercial purposes [7, 8]. Heat exchangers facilitate the efficient exchange of heat between two or more fluids characterized by different temperatures, all while preventing the mixing of these fluids [9, 10].

How does a heat exchanger work?

Internal fins are positioned inside the heat exchanger tubes, thereby increasing the surface area available for heat transfer within the fluid. These fins are in direct contact with the fluid flowing inside the tubes, promoting efficient heat exchange as displayed in Fig. 8, Fig. 9.