Performance evaluation of PV panels for green HHO gas generation: Energy, exergy, and economic investigation

M.S. Gad and Emad M.S. El-Said

Energy, 2023, vol. 280, issue C

Abstract: The paper aim is to design and fabricate of solar-powered alkaline water electrolyzer to produce hydroxy gas (HHO) flow with enhanced efficiency. Oxyhydrogen gas was yielded by the electrolysis of water utilizing various NaOH concentrations of 5, 10, 15 and 20%. Based on the solar radiation peak time at 12:00 p.m., the increase of solar intensity from 502 W/m2 to 1000 W/m2 (from 08:00 AM to 12:00 PM) led to the current and voltage increases by about 700% and 450%, respectively. Cell efficiency increase was from 61% to 69% by about 13% increase ratio. The output of HHO increases with cell gap between 1 and 3 mm. For temperatures between 30 °C and 60 °C, HHO generation declines at the gaps of cells between 4 and 7 mm. At the same operating temperature, the cells gap of 1, 3, 4, and 7 mm produced flow rates of 928, 975, 960, and 925 ml/min, respectively. After 30 min, the rate of HHO achieves the maximum values of 866, 985, 1090, and 1140 ml/min at NaOH concentrations of 5, 10, 15, and 20%. The simplicity, ease of assembly, and manufacture of the dry cell made it appealing. The HHO dry cell is affordable, made from readily available components, and adaptable to engines that receive their power from solar panels. The cost per liter to produce HHO varies between 0.437 and 0.575 $.

Keywords: HHO; Electrolysis; Dry cell; Electrolyzer; Solar PV (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:280:y:2023:i:c:s0360544223014536

DOI: 10.1016/j.energy.2023.128059

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