著者
ZOLTUYA Khashbaatar 金 熙濬 BAYARTSAIKHAN Tsendee NARANTSETSEG Magsarjaw
出版者
一般社団法人 日本エネルギー学会
雑誌
日本エネルギー学会大会講演要旨集 (ISSN:24238317)
巻号頁・発行日
vol.29, pp.126-127, 2020

<p>Pyrolysis and combustion process of Mongolian Pine tree sawdust have been investigated by the isothermal thermogravimetric technique, at several different operating temperatures using the vertical fixed bed reactor. Gas chromatography analysis was employed to characterize the composition of evolving gas in samples during the pyrolysis process. Thermal degradation results showed that pine sawdust mainly devolatilized around 300-450°C temperatures with total volatile yield about 78%. When it is comparing with the Mongolian brown coals, devolatilization was higher at above 600°C (the volatile yield was 39-54% for all brown coals) than lower temperatures (7-32% at 600°C˂). The reaction kinetics activation energy (<i>Ea</i>), pre-exponential factor (<i>A</i>) were determined using first-order method for pyrolysis process. The apparent activation energy of Pine sawdust is 29.3 kJ/mol during pyrolysis process at range temperature of 600-900°C. The main evolving gaseous products during pyrolysis were H<sub>2</sub>, CH<sub>4</sub>, CO, CO<sub>2</sub>, and their yields were relatively each pyrolysis temperatures.</p>
著者
市川 真士 村田 崇 木野村 茂樹 鈴木 岐宣 三好 達也
出版者
一般社団法人 日本エネルギー学会
雑誌
日本エネルギー学会機関誌えねるみくす (ISSN:24323586)
巻号頁・発行日
vol.97, no.3, pp.232-238, 2018

<p>新型のプリウスPHVに搭載されている新開発プラグインハイブリッドシステムは,旧型のプリウスPHVと比べ,よりいっそうの高効率・低損失化と小型・軽量化を目指して開発を推進し,次世代環境車の柱となるにふさわしい省エネ性能を実現した。EV性能は,EV距離とEV出力ともに旧型より大幅アップを実現し,実使用でのEVカバー率の向上が可能となった。さらに,駆動用バッテリの充電は,ACおよびDC充電に加え,世界初のソーラー充電システムを採用した。駐車中のソーラー充電で,日当たり最大EV距離6.1 km分の充電が可能であり,よりCO<sub>2</sub>フリーなEV走行が可能となった。</p>
著者
矢川 憲利
出版者
一般社団法人 日本エネルギー学会
雑誌
燃料協会誌 (ISSN:03693775)
巻号頁・発行日
vol.69, no.6, pp.424-429, 1990-06-20 (Released:2011-02-23)
参考文献数
9

Infrared spectrum is generally divided into two distinct regions; near infrared with wavelengths shorter than about 4μm and far infrared with wavelengths greater than about 4μm. In this paper, thermal properties of infrared radiation and effectiveness of far infrared radiation for space heating are investigeted.The thermal properties of infrared radiation are as follows:1) For human skin and clothing fabrics, the reflection of radiation is low in the wavelength region over 2μm while the radiation emitted by a radiant space heater exists almost in this region.2) For the skin, the transmission of near infrared radiation is higher than that of far infrared radiation.3) The thermal sensation for each wavelength is not different in the wavelength region over 2μm.It is generally accepted that space heaters emitting far infrared radiation make comfortable environment. But the investigation of infrared radiation properties shows that far infrared radiation itself is not specially effective for space heating. On the other hand, far infrared radiant heaters make comfortable environment because they are low temperature radiant heaters which make uniform and moderate radiant environment without any excessive wind that makes human body feel uncomfortable.
著者
内藤 游
出版者
一般社団法人 日本エネルギー学会
雑誌
燃料協会誌 (ISSN:03693775)
巻号頁・発行日
vol.3, no.5, pp.334-339, 1924

燃料の燃燒程度及び熟の利用率な的確に表示する機械の具備して居ないことは燃料研究上の大缺點であろ。之がたあ常時使用して差支ない測量機械が發明せらるゝ迄は燃料技師として非常に骨が折れることか覺悟せればならない。尤も燃料の經濟は燃料か焚燒する點に於ての改良もを必要とすうが叉石炭が工場に搬入されて火處に建すろ迄或は火處にて燃焼して廢氣となつて姻突を出つる迄の工程中工揚の經濟に影響する事項の多い事か發見する。故に燃料經濟は焚嶢にのみ窮局せしめずしイ、工場經濟全體の上から考査することに依り著しき効果か牧むることが出來るのである。尚鼓に工場經濟上大に注意な要する事柄は昨年工場衰退の時機に於て我邦の石炭需要が工場衰退の割に減少しない現象である。此等の點を考察する時は工場經濟上石炭の利用には缺點が多々あるのぐある。演者は此等の缺陥は容易に改良し且つ解決せらるべきを論じて工場主並に工場監督者の注意を喚起ぜんとするのである。
著者
佐野 寛 中村 富三
出版者
一般社団法人 日本エネルギー学会
雑誌
燃料協会誌 (ISSN:03693775)
巻号頁・発行日
vol.56, no.5, pp.345-350, 1977-05-20 (Released:2011-10-21)
参考文献数
6
被引用文献数
1

Flame of H2 is almost colorless and hardly visible by eyes. A method was investigated to visualize the H2-flame by addition of a small amount of hydrocarbon gas, such as CH4, C3H8, C3H6, and C2H2.The flame luminosity generally decreased both with increase of λ1 (premixed air/ fuel ratio) and H2 fraction in fuel gas, except for highly carbon-sooty flame.In diffusion flame of H2, some hydrocarbons (C3H8, C3H6 and C2H2) were very effective to increase the luminosity by a factor of 102 with addition of 10 eq-% (equivalent fraction of hydrocarbon in fuel) and by a factor of 103 with 20 eq-%, respectively. CH4 was less effective that the luminosity increased only by a factor of 10 with addition of 50 eq-%.In premixed flame of H2, the effect of hydrocarbon addition was not significant. However, C3H8, C3H6, and C2H2 could increase the luminosity by a factor of 3, -10 with addition of 20 ep-% of them. The addition of above 20 eq-% of hydrocarbon had no further effect on increasing the luminosity.
著者
児玉 清臣
出版者
一般社団法人 日本エネルギー学会
雑誌
日本エネルギー学会誌 (ISSN:09168753)
巻号頁・発行日
vol.76, no.6, pp.483-490, 1997-06-20 (Released:2010-06-28)

It has been described that coal was discovered at Miike, Japan in 1465.In Edo era, Miike mine had been operated systematically for 150 years.A westernized mining technology was introduced by the British in 1878. Mitsui Mining Company Limited succeeded the operation in 1889 and has continued it up to the present.In spite of huge amount of coal resources and thick seam, Miike mine had been trou-bled with a gush of water and faced with a severe condition of the mining under the bot-tom of the sea since 1910. However, Miike mine has defeated these disadvantages with the constant efforts and the employment of new technologies, and has built up the pre-sent status accumulating the valuable experiences.Miike mine has played an important roll of a leader in mining industries and has contributed to the society. Unfortunately, Miike mine has at last come to an end of the roll in 1997 for economical reason. In the history of 110 years, Mitsui mining company produced and supplied over 289 million tons of coal. Now we have a duty to look back the course Miike mine and Mitsui mining company have followed and achieved.
著者
小田島 精作
出版者
一般社団法人 日本エネルギー学会
雑誌
燃料協会誌 (ISSN:03693775)
巻号頁・発行日
vol.13, no.11, pp.1351-1362, 1934-11-20 (Released:2010-06-28)

主として石炭の性質と燃焼方法との關係を述べ燃焼装置の選擇に及び大方の參考に供せんとす
著者
大山 聖一
出版者
一般社団法人 日本エネルギー学会
雑誌
日本エネルギー学会誌 (ISSN:09168753)
巻号頁・発行日
vol.74, no.3, pp.137-146, 1995-03-20 (Released:2010-06-28)
参考文献数
55
被引用文献数
5 6

The recent status of catalytic hydrogenation of carbon dioxide to methanol was investigated. Although catalytic hydrogenation of CO2 requires H2 and energy, it shows much higher reaction rate than other CO2 conversion technologies. Especially, conversion to methanol is a promising technology because of its excellent characteristics as a fuel. Thermodynamically, lower temperatures and lower pressures are favorable for methanol synthesis from CO2 and higher temperatures are favorable for the reverse water gas shift reaction. Thus, a catalyst which is highly active below 473 K promises low-energy conversion to methanol. CO2 hydrogenation technology is classi-fied into a gas-phase synthesis and a liquid-phase synthesis from its reaction method. In the gas-phase synthesis, Cu/ZnO-based catalysts show space time yields comparable to those in the conventional methanol production process from syngas. The liquid-phase synthesis employing a homogeneous catalyst is expected to operate at lower temperatures than the gas-phase synthesis. In order to achieve efficient CO2 conversion to methanol, it is necessary to develop an active catalyst system at lower temperatures.
著者
柿沼 伸良 相田 卓 佐藤 剛史 阿尻 雅文 新井 邦夫
出版者
一般社団法人 日本エネルギー学会
雑誌
石炭科学会議発表論文集 第38回石炭科学会議 (ISSN:24238295)
巻号頁・発行日
pp.123-126, 2001-11-13 (Released:2017-03-22)

Taiheiyo coal extraction experiments with supercritical water (SCW) and SCW-Phenol mixtures were conducted at 400℃ and 25MPa using a semi-continuous apparatus. With increasing the concentration of phenol, the extraction yield increased up to 80wt%-daf. Extraction yield of Yallourn coal extraction shows 80wt%-daf, while that of Adaro coal shows 65wt%-daf with the SCW-PhOH (80wt%) mixtures. Mechanism of the co-solvent reactive extraction was discussed based on the analysis of the products. This suggests the capping effect of phenol to prevent from polymerization of products.
著者
小竹 裕人 関 庸一 天谷 賢児 清水 宏康
出版者
一般社団法人 日本エネルギー学会
雑誌
日本エネルギー学会大会講演要旨集 第25回日本エネルギー学会大会 (ISSN:24238317)
巻号頁・発行日
pp.244-245, 2016-08-02 (Released:2017-03-01)

Low-speed electric bus was developed for building the low-carbon society. The bus has eight wheels with in-wheel motors, and its maximum speed is 19km/h. Demonstration and social experiments were carried out in the Kiryu city in order to investigate the enhancement effect of local community. In this study, we revealed the re-vitalization effect of local community by the introduction of low-speed electric bus on the basis of a questionnaire survey.
著者
中島 利幸
出版者
一般社団法人 日本エネルギー学会
雑誌
燃料協会誌 (ISSN:03693775)
巻号頁・発行日
vol.39, no.7, pp.502-507, 1960-07-20 (Released:2011-10-21)

エチレンは製油所の副生ガス中には少量しかふくまれていないため, その大量製造には特にこの目的のために炭化水素を熱分解しなければならない。エチレン製造の原料はエタン, あるいはプロパンのようなLPGと石油留分あるいは原油のような液状炭化水素とに大別されるが, 日本, 英国, ヨーロッパなどでは主に石油留分, 特にナフサが原料として使用されている。製造方法は, ナフサを約30lb/in2g, 700~800℃ の所定条件で分解したのち, 分解ガスはアセチレン, 炭酸ガス, 硫化水素などの不純物が除去されるよう精製され, ついで蒸留により各留分に分別される。製造工程は分解工程, 予備蒸留工程, 分解ガスの精製工程, 低温蒸留工程および高温蒸留工程にわかれており, 低温蒸留工程では0℃ 以下の低温および高圧で蒸留をおこなうため, 分解ガス中の水分の除去装置および大規模の冷凍装置が必要とされる。製造工程からでる製品としては, 主製品のエチレンのほか, 水素のメタンの混合物である副生ガス, エタン, プロピレン, ブタジエンを相当量ふくんだC4留分, ペンタン留分, ベンゾール, トルオールキシロールなどを多量ふくんだ高オクタン価の分解ガソリンおよび重油がある。
著者
川口 秀夫 寺村 浩 中村 聡子 荻野 千秋 原 清敬 蓮沼 誠久 老沼 研一 高谷 直樹 平野 恒 佐塚 隆志 北野 英己 近藤 昭彦
出版者
一般社団法人 日本エネルギー学会
雑誌
バイオマス科学会議発表論文集 第11回バイオマス科学会議 (ISSN:24238333)
巻号頁・発行日
pp.35-36, 2016-01-14 (Released:2017-03-22)

Sorghum bagasse pretreated with diluted acid, which was predominantly composed of glucan (59%) and xylan (7.2%), was used as a lignocellulosic feedstock to produce D-phenyllactic acid (PhLA) by a recombinant Escherichia coli strain expressing phenylpyruvate reductase from Wickerhamia fluorescens. Compared to filter paper hydrolysate, the PhLA yield was reduced by 35% during fermentation with enzymatic hydrolysate of sorghum bagasse as a carbon source, and metabolomics analysis revealed that intracellular levels of erythrose-4-phosphate and phosphoenolpyruvate and NAD(P)H regeneration for PhLA production from glucose markedly reduced. Compared to the separate hydrolysis and fermentation (SHF) with sorghum bagasse hydrolysate, simultaneous saccharification and fermentation (SSF) of sorghum bagasse under glucose limitation conditions yielded 4.8-fold more PhLA with less accumulation of eluted components of p-coumaric acid and aldehydes, which inhibited PhLA fermentation. These results suggest that gradual hydrolysis of sorghum bagasse during SSF reduces the accumulation of both glucose and fermentation inhibitors, collectively leading to increased PhLA yield.
著者
歌川 学
出版者
一般社団法人 日本エネルギー学会
雑誌
日本エネルギー学会大会講演要旨集 第27回日本エネルギー学会大会 (ISSN:24238317)
巻号頁・発行日
pp.248-249, 2018-08-01 (Released:2018-07-31)

To achieve an active public consensus on Japan’s massive GHGs reduction policy, this paper presents reduction scenario of CO2 emissions from fuel combustion in Japan to 2050 by technology options and demand sift under population shrinking society. Even though based on industrial production scenario same as association of industries in Japan, CO2 emissions in 2050 could be reduced more than 80% from 1990 level by energy conservation and sift to renewable energies. In addition with material sift, CO2 emissions in 2050 could be reduced 95% from 1990 level. It is estimated that these investment can be recovered by the energy cost reduction. The employment created by the investment estimated about 1 million, and about 0.2 million at local as new large employment.