Thermodynamic Analysis And Optimization Of Heat Storage Material For The System Of Hydrogen Production From Biomass In Supercritical Water By Concentrated Solar Energy

Solar energy resources is extremely rich, it has very big developing potential, butsolar energy also has the characteristics of dispersion, indirectness, and randomness.Hydrogen is a kind of high-efficiency clean energy, with a high density, and itsadvantages also include the diversity of utilization and the convenience intransportation and storage Development of clean and renewable energy can solve theenergy and environmental problems well. Biomass energy has the advantage ofrenewable and low pollution, human can keep the sustainable development of energyand achieve large economic and environmental benefits by transferring renewableenergy such as Solar energy and biomass energy to hydrogen energy.Solar heated hydrogen production from biomass supercritical water is a newresearch direction in hydrogen production technology. In solar energy hydrogenproduction from biomass supercritical water technology, to achieve high efficiencywhile low cost, problems like solar energy accumulation, transfer and storage must beresolved. Due to metal hydroxide, carbonate and sulfate are widely studied, and highsecurity, this article choose these three compounds as chemical reaction heat storagematerials research object. According to the requirements of solar heated hydrogenproduction from biomass supercritical water, steering temperature as the main parameter,this paper organizes and summarizes the selection standard of chemical reaction heatstorage materials. By calculating the thermodynamic parameters in the chemistry heatstorage material thermal decomposition reaction through thermal chemical calculationsoftware-HSC Chemistry, it had the thermodynamic analysis for the three types of typical heat storage materials. And next it will select the best heat storage materialsaccording to the selection criteria in all kinds of compounds in the optimization. Resultsshow that in the metal hydroxide, barium hydroxide is the best heat storage materials; Incarbonate, calcium carbonate is the best heat storage materials; In the sulfate, nickelsulfate is the best heat storage materials. In three kinds of heat storage material, nickelsulfates finally selected for the best chemical reaction heat storage materials.This paper makes the comprehensive summary of thermal chemical reaction heatstorage materials, and summarizes the optimization standard of chemical reaction heatstorage material. Through this selection criteria, we can select out proper heat storage materialsquickly and directly. This article also provided theoretical basis for further study inchemical reaction heat storage materials, and certain instruction value for thedevelopment of chemical reaction heat storage technology.