Abstract
By 2050, renewables should increase the share of electricity generation to 70 %. According to the net-zero long-term plan, solar energy is at the forefront of renewable sources. The concreted solar plant is one of the best renewable-based electricity generation utilities that can combine with solar cells and battery systems. In this study, basic modelling for counter flow shell-tube type heat exchanger is developed in which melted salt and steam/water are the two-working fluid of the heat exchanger. A two-phase heat transfer analysis has been considered for the boiling phenomena in the saturated steam region. The study is performed for 5 kg·s−1 flow rate of steam/water and for different flow rate of melted salt varying from 75 kg·s−1 to 300 kg·s−1. Thermodynamic characteristics of the heat exchanger, such as, vapor quality and convective coefficient variation of the steam/water along the length of the heat exchanger has been presented. In addition, temperature profile of the melted salt and the steam/water along the length of the heat exchanger is determined in this study. Numerical analysis affirmed that the battery cooling was successful at Reynolds number of 200–500 as the maximum temperature was lower 320 K.
•Develop a battery basic model of the counter flow heat exchanger.•Examine for cooling via boiling phenomena of melted salt and water.•Thermodynamic characteristics along the length of the battery model.