Search Results - "Ryu, Junichi"

Polymorphism of d-Mannitol in Zeolite-Added d-Mannitol-Based Phase Change Materials and Its Effect on Supercooling Degree by Tang, Xudong, Ryu, Junichi

“…d -mannitol, as a potential phase change material (PCM), has a wide range of applications in solar cooling, building heating, domestic hot water systems, and…”
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Fourier-Transform Infrared Analysis of the Dehydration Mechanism of Mg(OH)2 and Chemically Modified Mg(OH)2 by Kurosawa, Ryo, Takeuchi, Masato, Ryu, Junichi

“…Mg­(OH)2 is a medium-temperature chemical heat storage material. The addition of LiCl and/or LiOH to Mg­(OH)2 has been reported to promote the dehydration of…”
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Application of lithium orthosilicate for high-temperature thermochemical energy storage by Takasu, Hiroki, Ryu, Junichi, Kato, Yukitaka

“…•Li4SiO4/CO2 system is proposed for use in chemical heat pump systems at 650 and 700°C.•Li4SiO4/CO2 system showed an enough cyclic reaction durability for 5…”
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Vibrational spectroscopic evaluation of hydrophilic or hydrophobic properties of oxide surfaces by Takeuchi, Masato, Kurosawa, Ryo, Ryu, Junichi

“…Herein, we evaluated the hydrophilic or hydrophobic surface properties of various oxides using vibrational spectroscopy, such as FT‐IR (mid‐IR) and near‐IR…”
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Dehydration reactivity of Mg(OH)2 containing low amounts of Li-additives for thermochemical energy storage by Kobayashi, Naoki, Kurosawa, Ryo, Ryu, Junichi

“…Mg(OH)2 is a chemical heat storage material suitable for the utilization of unused heat at 300–400 °C. It has been reported that the addition of Li compounds…”
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Adsorption and Desorption Behaviors of Ammonia on Zeolites at 473 K by the Pressure–Swing Method by Tokushige, Manabu, Ryu, Junichi

“…Adsorption and desorption behaviors of ammonia on the zeolites were investigated using the pressure–swing method to utilize the ammonia adsorbent at 473 K. For…”
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Effects of Addition of Alkali Metal Compounds to Lanthanum Hydroxides as Chemical Heat Storage Materials by Kono, Shunsuke, Kurosawa, Ryo, Ryu, Junichi

“…La(OH)3 was studied as a chemical heat storage material for storing waste heat at temperatures below 300 °C. The co-addition of LiCl and NaOH improved the…”
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Thermochemical performance of magnesium hydroxide–expanded graphite pellets for chemical heat pump by Zamengo, Massimiliano, Ryu, Junichi, Kato, Yukitaka

“…Expanded graphite (EG) was used to enhance the thermal conductivity in the packed bed reactors of magnesium oxide–water (MgO–H2O) chemical heat pumps (CHP). An…”
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Investigation on the Mechanisms of Mg(OH)2 Dehydration and MgO Hydration by Near-Infrared Spectroscopy by Kondo, Atsushi, Kurosawa, Ryo, Ryu, Junichi, Matsuoka, Masaya, Takeuchi, Masato

“…The mechanism for the dehydration of Mg­(OH)2 and hydration of MgO was investigated by near-infrared (NIR) spectroscopy. Mg­(OH)2 showed three absorption bands…”
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Development of thermal storage material using vermiculite and calcium hydroxide by Kariya, Jun, Ryu, Junichi, Kato, Yukitaka

“…•A chemical heat storage (CHS) material that utilizes waste heat is proposed.•This material can be used in industrial plants and nuclear power…”
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Hydration of LiOH and LiClNear-Infrared Spectroscopic Analysis by Takeuchi, Masato, Kurosawa, Ryo, Ryu, Junichi, Matsuoka, Masaya

“…The hydration behavior of LiOH, LiOH·H2O, and LiCl was observed by near-infrared (NIR) spectroscopy. Anhydrous LiOH showed two absorption bands at 7340 and…”
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Comparison of the Effect of Coaddition of Li Compounds and Addition of a Single Li Compound on Reactivity and Structure of Magnesium Hydroxide by Kurosawa, Ryo, Takeuchi, Masato, Ryu, Junichi

“…Mg­(OH)2 is a chemical heat storage material that is studied for the utilization of 300–350 °C waste heat. In this study, LiCl and LiOH were coadded to…”
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Evaluation of Heat Output Densities of Lithium Chloride-Modified Magnesium Hydroxide for Thermochemical Energy Storage by Ishitobi, Hirokazu, Hirao, Naoya, Ryu, Junichi, Kato, Yukitaka

“…Lithium chloride-modified magnesium hydroxide is a candidate material for thermochemical energy storage. In this work, the effects of lithium chloride mixing…”
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Effect of Lithium Compound Addition on the Dehydration and Hydration of Calcium Hydroxide as a Chemical Heat Storage Material by Maruyama, Aya, Kurosawa, Ryo, Ryu, Junichi

“…Many studies on calcium hydroxide [Ca­(OH)2] as a chemical heat storage material have been conducted. Generally, calcium hydroxide undergoes a dehydration…”
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Composite block of magnesium hydroxide – Expanded graphite for chemical heat storage and heat pump by Zamengo, Massimiliano, Ryu, Junichi, Kato, Yukitaka

“…The chemical heat storage/chemical heat pump technology (CHS/CHP) based on the reversible gas–solid chemical reactions between magnesium oxide, water, and…”
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Reaction Performance of Calcium Hydroxide and Expanded Graphite Composites for Chemical Heat Storage Applications by Kariya, Jun, Ryu, Junichi, Kato, Yukitaka

“…New composite materials were developed for application in chemical heat storage (CHS) systems based on the calcium oxide/water/calcium hydroxide…”
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Waste Heat Recovery from Iron Production by Using Magnesium Oxide/Water Chemical Heat Pump as Thermal Energy Storage by Myagmarjav, Odtsetseg, Ryu, Junichi, Kato, Yukitaka

“…A heat recovery system based on thermal energy storage from the iron-making process at medium temperature range (200–300°C) is presented. For an efficient…”
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Numerical Analysis of Chemical Heat Storage Units for Waste Heat Recovery in Steel Making Processes by Zamengo, Massimiliano, Ryu, Junichi, Kato, Yukitaka

“…Magnesium oxide/water/magnesium hydroxide (MgO/H2O/Mg(OH)2) heat storage system using a composite material mixed with Mg(OH)2 and expanded graphite (EG), named…”
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Electrolysis of carbon dioxide for carbon monoxide production in a tubular solid oxide electrolysis cell by Dipu, Arnoldus Lambertus, Ujisawa, Yutaka, Ryu, Junichi, Kato, Yukitaka

“…•An experimental study for the CO regeneration was demonstrated.•Higher current densities at higher temperatures were obtained.•The scale of the combined…”
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Carbon dioxide reduction in a tubular solid oxide electrolysis cell for a carbon recycling energy system by Dipu, Arnoldus Lambertus, Ujisawa, Yutaka, Ryu, Junichi, Kato, Yukitaka

“…A new energy transformation system based on carbon recycling is proposed called the active carbon recycling energy system (ACRES). A high-temperature gas…”
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