By Ibrahim Dincer, Anand S. Joshi
This booklet presents a entire research of assorted sun established hydrogen construction platforms. The booklet covers first-law (energy dependent) and second-law (exergy established) efficiencies and offers a accomplished figuring out in their implications. it's going to aid reduce the common misuse of efficiencies between scholars and researchers in power box through the use of an intuitive and unified technique for outlining efficiencies. The publication offers a transparent realizing of the sustainability and environmental impression research of the above platforms. The publication might be really important for a transparent realizing of moment legislations (exergy) efficiencies for numerous structures. it may well function a reference publication to the researchers in strength box. The definitions and ideas constructed within the publication can be defined via illustrative examples.
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Extra resources for Solar Based Hydrogen Production Systems
Sample text
The cavity reactor is covered by insulating material (insulating bricks) on sides and back. A hemispherical glass window is attached to the front of the cavity. A silica tube is attached near the cavity, and a steam feed inlet is attached from the side of the cavity wall. When concentrated solar radiations focus on the cavity reactor, they are transmitted through the glass window: a hemispherical glass window is used to improve the concentration and minimize reflection losses. When the reactor temperature reaches 1,500 K or higher, steam is introduced to the cavity wall.
In the first part of this chapter, background information is presented regarding different routes of water dissociation with light energy to generate hydrogen. The photo-electrochemistry of water splitting is discussed, as well as photo-catalytic reaction mechanisms. The recent advances and new contributions to light-based hydrogen production systems are reviewed. The overall photo-catalytic water-splitting systems to produce hydrogen and oxygen are described from design and scale-up aspects. At the end, the principles of photo-electrolysis and photobiological methods are also explained and detailed examples are presented.
Four major ways in which solar energy can be utilized to produce hydrogen are given in Fig. 1 [53]. Now, we discuss each hydrogen production method, one by one, in the following sections. 2 General Classification of Solar Hydrogen Production 29 Solar Energy Concentrated Solar Thermal Energy Photovoltaic Bio-photolysis Mechanical Energy H2O Solar Thermolysis Solar Thermochemical Cycle Solar Gasification Fossil Fuels (Natural Gas, Oil, Coal) and Biomass Solar Cracking Electrolysis Photoelectrolysis Solar Reforming CO2/C Sequestration Solar Hydrogen Fig.