JaLCDOI 10.18926/19660
フルテキストURL Mem_Fac_Eng_OU_33_2_25.pdf
著者 Song Baoyin| 稲葉 英男| 堀部 明彦|
抄録 A set mathematical models was developed for predicting the performance of an open-type flat-plate solar collector, and solved numerically through an implicit difference method. The effects of various parameters on the absorption of solar energy for the collector were investigated. The results showed that the solar energy absorptance of the open-type flat-plate collector was relatively high especially for the region where the weather was humid and hot, and there were an optimum length and an optimum tilt angle for the absorbing plate on which the collector could obtain the highest solar energy absorptance. It was found that the latent heat flux of water evaporation could be 5 to 15 times larger than the sensible heat flux. The effects of the magnitude of the solar incident flux, the atmospheric humidity, the atmospheric temperature, the absorbing plate tilt angle, and water film thickness on the temperature rising of the water film were clarified in numerical quantities. The increase of the solar incident flux, the atmospheric humidity or the atmospheric temperature also resulted in a rise in the energy absorptance of the collector.
出版物タイトル Memoirs of the Faculty of Engineering, Okayama University
発行日 1999-04-27
33巻
2号
開始ページ 25
終了ページ 37
ISSN 0475-0071
言語 English
論文のバージョン publisher
NAID 120002308992
JaLCDOI 10.18926/15427
フルテキストURL Mem_Fac_Eng_OU_26_2_17.pdf
著者 Feng Yibu| 稲葉 英男| 野津 滋|
抄録 Heat transfer measurements were conducted during freezing of quiescent water in a horizontal cylinder. A horizontal cylinder with inner diameter of 61.1 mm is cooled by air in a constant low temperature room and time variations of the radial distribution of fluid temperature were observed. Experimental results for the velocity of the phase change interface, the time taken for complete freezing and apparent freezing heat transfer coefficient were compared with the simple theoretical model based on the quasisteady assumption.
出版物タイトル Memoirs of the Faculty of Engineering, Okayama University
発行日 1992-03-28
26巻
2号
開始ページ 17
終了ページ 24
ISSN 0475-0071
言語 English
論文のバージョン publisher
NAID 120002307382
JaLCDOI 10.18926/15425
フルテキストURL Mem_Fac_Eng_OU_26_2_1.pdf
著者 稲葉 英男| 大竹 秀雄| 野津 滋|
抄録 Radiative characteristics of the frost layer melted by radiative heat are experimentally examined. A frost layer is heated from above by the radiative heat from a halogen lamp set. Thermal radiation of the lamp has the wavelength spectrum characteristics similar to those of the solar radiation. The effect of the environmental temperature upon the frost melting process is clarified in experiments. The optical characteristics of reflectivity, absorptivity and transmissivity of the frost layer during the melting of the frost layer are measured using special measuring instruments.
出版物タイトル Memoirs of the Faculty of Engineering, Okayama University
発行日 1992-03-28
26巻
2号
開始ページ 1
終了ページ 16
ISSN 0475-0071
言語 English
論文のバージョン publisher
NAID 120002307428
JaLCDOI 10.18926/15412
フルテキストURL Mem_Fac_Eng_OU_26_1_21.pdf
著者 野津 滋| 稲葉 英男|
抄録 A numerical study is performed for the facilitated diffusion of carbon-dioxide in an ultrapure water film flowing downward along a vertical surface. The model adopted for the present work includes the effects of the reaction rate for the hydration of CO(2)in a liquid. Comparison of the total concentration of CO(2) for different film thickness indicates that the effects of the hydration is more remarkable for the thinner liquid film.
出版物タイトル Memoirs of the Faculty of Engineering, Okayama University
発行日 1991-11-30
26巻
1号
開始ページ 21
終了ページ 26
ISSN 0475-0071
言語 English
論文のバージョン publisher
NAID 120002307958
JaLCDOI 10.18926/15409
フルテキストURL Mem_Fac_Eng_OU_29_2_5.pdf
著者 稲葉 英男| Tu Ping| 尾崎 公一|
抄録 Transient characteristics of the rectangular latent heat storage vessel packed with shape-stabilized phase change (solid-liquid) material (PCM) are investigated numerically by solving the governing equations of both the PCM and the heat transfer medium(water) simultaneously as a conjugate problem with the finite difference technique. It's found that the heat storage characteristics are greatly affected by the flow direction of the heat transfer medium since the natural and forced convection coexists in the heat storage vessel. That is, it is classified that the effectively thermal efficiency of the latent heat storage system is obtained by the downflow along vertical PCM for heat storage process and the upflow for heat release process. The effect of the inlet velocity of heat transfer medium(water) on transient heat characteristics of the latent heat storage system is also revealed in the present study.
出版物タイトル Memoirs of the Faculty of Engineering, Okayama University
発行日 1995-03-27
29巻
2号
開始ページ 5
終了ページ 12
ISSN 0475-0071
言語 English
論文のバージョン publisher
NAID 120002307377
JaLCDOI 10.18926/15390
フルテキストURL Mem_Fac_Eng_OU_27_1_27.pdf
著者 Hirashima Masao| 稲葉 英男|
抄録 Heating and refrigerating technique such as snow melting of road and cold storage by utilizing temperature difference between underground soil and atmosphere is widely used[1-4] in a cold area. In the 1st Report, heat transfer characteristics of two phase closed thermosiphon for extracting geothermal energy is studied fundamentally. In the empirical study, heat extract rate is measured in connection with the change of atmospheric temperature utilizing real two thermosiphons on the site. Temperature distribution on the surface of the thermosiphon and underground soil around it is also measured. Based on the data of the empirical experiment, it is confirmed that prevention of freezing for fire hydrant can be achieved by geothermal heat utilizing two phase closed thermosiphon. Present paper describes the heat transfer behavior of the thermosiphon as the 2nd report.
出版物タイトル Memoirs of the Faculty of Engineering, Okayama University
発行日 1992-11-25
27巻
1号
開始ページ 27
終了ページ 32
ISSN 0475-0071
言語 English
論文のバージョン publisher
NAID 120002307336
JaLCDOI 10.18926/15388
フルテキストURL Mem_Fac_Eng_OU_27_1_11.pdf
著者 Hirashima Masao| 稲葉 英男|
抄録 To prevent freezing of road and aquaduct by extracting geothermal heat with two phase closed thermosiphon has been widely used in a cold area. Both heat transfer characteristics in the underground soil and function of the thermosiphon to extract geothermal heat have to be made clear for the purpose of the above system. This study is directed for the purpose to prevent freezing of fire hydrant and composed of the fundamental experiment and the empirical experiment. In the fundamental study, heat transfer behavior is studied experimentally in the small size filling bath representing the underground soil layer. After recording temperature distribution, heat transfer coefficient is measured, they are proceeded into the correlation between the dimensionless number of Nusselt, Rayleigh and Fourier. The fundamental study is described as the first report.
出版物タイトル Memoirs of the Faculty of Engineering, Okayama University
発行日 1992-11-25
27巻
1号
開始ページ 11
終了ページ 26
ISSN 0475-0071
言語 English
論文のバージョン publisher
NAID 120002307419
JaLCDOI 10.18926/15354
フルテキストURL Mem_Fac_Eng_OU_34_1.pdf
著者 Song Baoyin| 稲葉 英男| 堀部 明彦| Takahashi Takashi|
抄録 The experiment for investigating the falling snow melting characteristics of warm water flowing along sheet channels spread on a roof was performed in Tookamachi city, Nigata prefecture from February 6 to February 7, 1995. The sheet surface temperatures at 11 positions in 3 channels were measured. A physical model for a gas-water-snow system was constructed to compare the predicted results with the measured ones. A fully spread uniform water film in the sheet channel was observed in the experiments. The experimental results elucidated that it was feasible to use warm water flowing along sheet channels for melting falling snow on roofs. The temperature drop in the sheet channel mainly depended on the snowfall intensity, atmospheric temperature and wind speed. Under the influence of the roof edge, the temperature drop in the channel next to the side edge was much larger than that in middle channels. A water-snow two phase flow or a snow covered frozen water was experienced temporarily in the lower reaches of the water flowing channel. These suggest that a larger water flow rate is needed for the channel next to the roof edge, and a higher inlet temperature or a greater water flow rate is required for a severe weather condition. There was reasonably good agreement between the measured and predicted water temperatures.
出版物タイトル Memoirs of the Faculty of Engineering, Okayama University
発行日 2000-03-27
34巻
1-2号
開始ページ 1
終了ページ 12
ISSN 0475-0071
言語 English
論文のバージョン publisher
NAID 120002307686
JaLCDOI 10.18926/14084
フルテキストURL Mem_Fac_Eng_OU_41_1_52.pdf
著者 稲葉 英男| Syahrul Husain| 堀部 明彦| 春木 直人|
抄録 The effects of heat and mass transfer parameters on the efficiency of fluidized bed drying have been studied to optimize the input and output conditions. The analysis was carried out using two different materials, wheat and corn. Energy and exergy models based on the first and second law of thermodynamic are developed. Furthermore, some unified non-dimensional experimental correlations for predicting the efficiency of fluidized bed drying process have been proposed. The effects of hydrodynamics and thermodynamics conditions such as the inlet air temperature, the initial moisture content and well known Fourier and Reynolds numbers on energy efficiency and exergy efficiency were analyzed using the developed model. A good agreement was achieved between the model predictions, non-dimensional correlations and the available experimental results.
出版物タイトル Memoirs of the Faculty of Engineering, Okayama University
発行日 2007-01
41巻
1号
開始ページ 52
終了ページ 62
ISSN 0475-0071
言語 English
論文のバージョン publisher
NAID 120002308668
著者 稲葉 英男| 池上 秀章| 尾崎 公一|
発行日 1994-06-25
出版物タイトル 日本機械学會論文集 B編
60巻
574号
資料タイプ 学術雑誌論文
著者 稲葉 英男| 武谷 健吾|
発行日 1994-10-25
出版物タイトル 日本機械学會論文集 B編
60巻
578号
資料タイプ 学術雑誌論文
著者 稲葉 英男| 森田 慎一|
発行日 1994-04-25
出版物タイトル 日本機械学會論文集 B編
60巻
572号
資料タイプ 学術雑誌論文
著者 稲葉 英男| 武谷 健吾|
発行日 1994-12-25
出版物タイトル 日本機械学會論文集 B編
60巻
580号
資料タイプ 学術雑誌論文
著者 稲葉 英男| 尾崎 公一| 金岡 伸一|
発行日 1994-03-25
出版物タイトル 日本機械学會論文集 B編
60巻
571号
資料タイプ 学術雑誌論文
著者 稲葉 英男| 佐藤 憲二|
発行日 1994-12-25
出版物タイトル 日本機械学會論文集 B編
60巻
580号
資料タイプ 学術雑誌論文
著者 稲葉 英男| 尾崎 公一| 金岡 伸一|
発行日 1994-01-25
出版物タイトル 日本機械学會論文集 B編
60巻
569号
資料タイプ 学術雑誌論文
著者 稲葉 英男| 尾崎 公一| 池上 秀章|
発行日 1995-01-25
出版物タイトル 日本機械学會論文集 B編
61巻
581号
資料タイプ 学術雑誌論文
著者 稲葉 英男| 尾崎 公一| 野津 滋|
発行日 1993-11-25
出版物タイトル 日本機械学會論文集 B編
59巻
567号
資料タイプ 学術雑誌論文
著者 稲葉 英男| 森田 慎一|
発行日 1995-03-25
出版物タイトル 日本機械学會論文集 B編
61巻
583号
資料タイプ 学術雑誌論文
著者 稲葉 英男| 大竹 秀雄|
発行日 1993-11-25
出版物タイトル 日本機械学會論文集 B編
59巻
567号
資料タイプ 学術雑誌論文