Design and simulation of hybrid solar high-temperature hydrogen production system using both solar photovoltaic and thermal energy

Ngoh, Simon Koumi; Ohandja, L.m. Ayina; Kémajou, Alexis; Monkam, Louis

doi:10.1016/j.seta.2014.05.002

Cited by 33 publications

(7 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While it has been shown that integrating a concentrated solar thermal plant into the system to supply the heat and steam for SOSE could reduce the LCH to 6.6 USD/kg, the calculation was based on the optimistic assumption of 100% capacity factor for the electrolyzer. 330 LCH 92 of as low as 5.7 USD/kg has been estimated for similar systems, 331 but we note that the specific capital cost of the electrolyzer in this work, 0.17 USD/W, was an order of magnitude lower than the demonstrated value of 3-4 USD/W and even lower than the ~0.4 USD/W of PEM electrolyzers. 327,330 Furthermore, the discount rate or interest rate used in the financial calculation has a major but often overlooked influence on the LCH.…”

Section: Efforts To Address Challenges In Scale-upcontrasting

confidence: 54%

Research advances towards large-scale solar hydrogen production from water

et al. 2019

View full text Add to dashboard Cite

Solar hydrogen production from water is a sustainable alternative to traditional hydrogen production route using fossil fuels. However, there is still no existing large-scale solar hydrogen production system to compete with its counterpart. In this Review, recent developments of four potentially cost-effective pathways towards large-scale solar hydrogen production, viz. photocatalytic, photobiological, solar thermal and photoelectrochemical routes, are discussed, respectively. The limiting factors including efficiency, scalability and durability for scale-up are assessed along with the field performance of the selected systems. Some benchmark studies are highlighted, mostly addressing one or two of the limiting factors, as well as a few recent examples demonstrating upscaled solar hydrogen production systems and emerging trends towards large-scale hydrogen production. A techno-economic analysis provides a critical comparison of the levelized cost of hydrogen output via each of the four solar-to-hydrogen conversion pathways.

show abstract

Section: Efforts To Address Challenges In Scale-upcontrasting

confidence: 54%

Research advances towards large-scale solar hydrogen production from water

et al. 2019

View full text Add to dashboard Cite

show abstract

“…In principle, the exergy matter can be determined by bringing it to the dead state by means of reversible processes [11] [12]. The basic equations used in exergy analysis modelling for this study are given below.…”

Section: Exergy Calculationmentioning

confidence: 99%

Assessment of Sustainability Indicators of Thermoelectric Power Generation in Cameroon Using Exergetic Analysis Tools

Inoussah¹,

Adolphe²,

Lissouck³

2017

EPE

View full text Add to dashboard Cite

In this paper, we evaluate the performance and sustainability indicators of various thermal power generation technologies in Cameroon using the exergy analysis tools. For this purpose, on the basis of data from the International Energy Agency (IEA) for Cameroon corresponding to the period from 2006 to 2014, we calculated the average energy and exergy efficiencies of each electricity generation technology from thermal sources. The average values of the exergy efficiencies obtained are respectively 28.97% for the LFO plants, 30.94% for the HFO plants, 34.66% for the biofuel plants and 36.67% for the gas-fired plants. The average sustainability indexes for each of the technologies are determined and values range from 1.56 for LFO plants to 2.12 for biofuel plants. The improvement potentials of each technology are calculated in order to identify the tracks of increase of their efficiency. Average values range from 165.57 GWh for biofuel plants to 1301.77 GWh for LFO plants. The results of this study should enable the development of productive and applicable planning for future energy policies, in particular for the electricity sector in Cameroon.

show abstract

“…It was deemed commercially viable with an electricity production cost of $0.445/kWh in producing a typical 150m 3 /h of hydrogen (assuming room temperature and pressure and hydrogen behaving as an ideal gas this is approximately 12.5kg/h of hydrogen). Ngoh et al (2014) apply hybrid solar thermal and PV to simulate hydrogen production via the electrolysis of steam using the climate of Cameroon and from the available sunlight and equipment performance derive a hydrogen production cost of $5.2/kg. Whilst a relatively large hydrogen production volume of 1843kg/day is predicted, a correspondingly large amount of land (53,400m 2 ) is required in line with Roeb et al (2011) researching solar thermal hydrogen production.…”

Section: Literature Reviewmentioning

confidence: 99%