Tokushima University / Educator and Researcher Directory --- Morioka, Itsuki

Field of Study

○	Thermal Engineering

Subject of Study

○	臭化リチウム水溶液を用いた吸収冷凍機における水蒸気の吸収性能解析, 物質移動を伴う対流シミュレーション, 臭化リチウム水溶液の熱物性および状態量の整理 (吸収冷凍, 物質移動, 熱伝達, 臭化リチウム水溶液)

Book / Paper

Academic Paper (Judged Full Paper):

1.	Masanori Kiyota, Itsuki Morioka, Keisuke Kimoto and Tetsuya Suekane : Steam absorption into films of aqueous solution of lithium bromide and lithium iodide mixture falling over a column of horizontal pipes, Heat Transfer-Asian Research, Vol.37, No.7, 431-444, 2008. (Link to Publication Site) ● Publication site (DOI): 10.1002/htj.20213 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-58049198090 (DOI: 10.1002/htj.20213, Elsevier: Scopus)
2.	Masanori Kiyota, Itsuki Morioka, Keisuke Kimoto and Tetsuya Suekane : Steam Absorption into Films of Aqueous Solution of LiBr and LiI mixture Falling over a Column of Horizontal Pipes, Transactions of The Japan Society of Mechanical Engineers, Series B, Vol.73, No.736, 2545-2551, 2007. (Summary) To improve absorption chiller performance, aqueous solution of LiBr and LiI mixture at 1: 0.7 ratio was proposed for absorbing medium since it has higher solution limit than conventional LiBr solution. But the component LiI solution has higher equilibrium pressure than LiBr solution. To investigate the absorption performance of the new liquid, experiments were carried out using horizontal pipe column. Experimental range of mass concentration was 62-66% for the mixture and 62-63% for LiBr solution. Absorption rate of LiBr solution at 62 and 63% is almost equal to mixture solution at 63% and 64% respectively. Mixture is inferior to LiBr at the same concentration. But at the maximum concentration, mixture solution has about 20 to 50% higher values than Libr solution. Surface temperature of the falling films was measured by thermal video camera and it was used to determine heat transfer coefficient and mass transfer coefficient. They are larger values for mixture solution. This is due to the smaller viscosity of the mixture solution. (Keyword) Absorption Chiller / Saturation Pressure / Solubility Limit / Absorption Rate / Heat Transfer Coefficient / Mass Transfer Coefficient (Link to Publication Site) ● Publication site (DOI): 10.1299/kikaib.73.2545 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520572357887927680 ● Summary page in Scopus @ Elsevier: 2-s2.0-40449111653 (DOI: 10.1299/kikaib.73.2545, CiNii: 1520572357887927680, Elsevier: Scopus)
3.	Masanori Kiyota, Itsuki Morioka and Maeda Akihiro : Numerical Calculation of Liquid Film Flowing down Flat Plates with Protrusions, Transactions of The Japan Society of Mechanical Engineers, Series B, Vol.73, No.735, 2297-2302, 2007. (Summary) Vertical plates or vertical tubes are used as absorber surface in certain type of absorption chiller. Regularly spaced protrusions would be necessary on their surface to cause mixing within the liquid film flowing over them to promote absorption. To determine the most suitable form of the protrusions experimentally takes much time due to so many possible combinations of parameters. It is convenient from the point of designing to replace them by computer simulations. So numerical calculations are tried using CIP method for the most part and Level set method for the treatment of film surface. Parameters concerning rectangular protrusions such as height h, width w and interval s are varied to study their effect on the flow patterns. Flow rates are also varied between 1 000 and 2 000 in film Reynolds number. It was found that for s/h=3 a single circulation vortex is formed between fins and for s/h=6 two completely separate vortex is formed for all Reynolds numbers studied. (Keyword) Absorption Refrigeration / Falling Film / Absorption Enhancement / Free Surface Flow / CIP Method / Level Set Method (Link to Publication Site) ● Publication site (DOI): 10.1299/kikaib.73.2297 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520009409008810880 ● Summary page in Scopus @ Elsevier: 2-s2.0-39049090995 (DOI: 10.1299/kikaib.73.2297, CiNii: 1520009409008810880, Elsevier: Scopus)
4.	Masanori Kiyota, Itsuki Morioka and Daisuke Matsuura : Steam absorption process of water/LiBr system inside vertical small bore pipes, Heat Transfer-Asian Research, Vol.34, No.1, 18-28, 2005. (Summary) 10mm以下の径の，平滑管，2種類のスパイラル管を用いて管内吸収実験を行った．また小径管の場合に適するよう円筒座標を用いてモデルの改良を行った．平滑管の結果と予測はよく一致しする．平滑管に比しスパイラル管では吸収が約30%増加するが，2つのスパイラルの間で差はあまりない． (Link to Publication Site) ● Publication site (DOI): 10.1002/htj.20040 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1002/htj.20040 (DOI: 10.1002/htj.20040)
5.	Masanori Kiyota, Itsuki Morioka and Daisuke Mtsuura : Steam absorption process of water/LiBr system inside vertical small bore pipes, Transactions of The Japan Society of Mechanical Engineers, Series B, Vol.70, No.693, 1279-1284, 2004. (Summary) 10mm以下の径の，平滑管，2種類のスパイラル管を用いて管内吸収実験を行った．また小径管の場合に適するよう円筒座標を用いてモデルの改良を行った．平滑管の結果と予測はよく一致しする．平滑管に比しスパイラル管では吸収が約30%増加するが，2つのスパイラルの間で差はあまりない． (Keyword) Absorption Refrigeration / Heat Transfer Coefficient / Mass Transfer Coefficient / Mass Absorption Rate (Link to Publication Site) ● Publication site (DOI): 10.1299/kikaib.70.1279 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520009407085642624 ● Summary page in Scopus @ Elsevier: 2-s2.0-3242795726 (DOI: 10.1299/kikaib.70.1279, CiNii: 1520009407085642624, Elsevier: Scopus)
6.	Masanori Kiyota, Itsuki Morioka and Tomohiro Matsuyama : Steam Absorption into Aqueous Lithium Bromide Solution Films Falling Inside Vertical Pipes, Heat Transfer-Asian Research, Vol.32, No.8, 740-752, 2003. (Summary) 径が28mm，19.05mm，15mm，10mmの4種類の管を用いて管内吸収実験を行った．また垂直壁を流下するものして吸収過程のモデル化行った．実験値と比較すると管径が15mm以上ではよく一致することがわかった． (Link to Publication Site) ● Publication site (DOI): 10.1002/htj.10128 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-0346094169 (DOI: 10.1002/htj.10128, Elsevier: Scopus)
7.	Masanori Kiyota, Itsuki Morioka and Tomohiro Matsuyama : Steam Absorption into Aqueous Lithium Bromide Solution Films Falling inside Vertical Pipes, Transactions of The Japan Society of Mechanical Engineers, Series B, Vol.68, No.674, 2843-2849, 2002. (Summary) 径が28mm，19.05mm，15mm，10mmの4種類の管を用いて管内吸収実験を行った．また垂直壁を流下するものして吸収過程のモデル化行った．実験値と比較すると管径が15mm以上ではよく一致することがわかった． (Keyword) Absorption Refrigeration / Heat Transfer Coefficient / Mass Transfer Coefficient / Mass Absorption Rate (Link to Publication Site) ● Publication site (DOI): 10.1299/kikaib.68.2843 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282681161020800 ● Summary page in Scopus @ Elsevier: 2-s2.0-0036818543 (DOI: 10.1299/kikaib.68.2843, CiNii: 1390282681161020800, Elsevier: Scopus)
8.	Masanori Kiyota, Itsuki Morioka and Kohzoh Asahara : Steam Absorption into Films of Lithium Bromide Solution Falling over Horizontal Pipes Arranged in a Vertical Column, Heat Transfer-Asian Research, Vol.30, No.6, 451-462, 2001. (Summary) 水平管を縦1列に配置しこの上を吸収液が流下する際の蒸気吸収過程についての実験である．管本数を1∼10本に変化させ，吸収量，熱伝達率，物質伝達率の分布を求めた．また前報のモデルの保存性を改良した．Reが20以上では実験と良く一致することがわかった． (Link to Publication Site) ● Publication site (DOI): 10.1002/htj.1031 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-0035440153 (DOI: 10.1002/htj.1031, Elsevier: Scopus)
9.	Masanori Kiyota, Itsuki Morioka and Kozo Asahara : Steam absorption into films of lithium bromide solution falling over horizontal pipes arranged vertical column, Transactions of The Japan Society of Mechanical Engineers, Series B, Vol.64, No.627, 3794-3800, 1998. (Summary) Absorber of water/LiBr absorption chiller is made up of horizontal tube banks, and its improvement is needed to get higher COP. To clarify the absorption process in these tube banks, a single row of horizontal pipe column is studied experimentally and analytically. The analytical model proposed in previous paper is further changed to conservative form according to the method of Shyy. It is confirmed that the mass balance of water is kept exactly by the present procedure. As for total absorption rate for the pipe column, agreement between experiment and numerical calculations are fairly good except the cases of 8 to 10 pipes at lower flow rate. The roughed pipes with different knurls on their surface were also tested in the experiment and it was found that knurl height of 0.5 mm was the most effective in absorption enhancement. (Keyword) Absorption Refrigeration / heat transfer / Mass Transfer / Tube Bank / Absorption Rate / Numerical Model (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001205893655808 (CiNii: 1390001205893655808)
10.	Akiharu Ousaka, 永島徹, 仮屋崎侃, Itsuki Morioka, Masanori Kiyota and 真本英光 : 傾斜上昇環状流の液滴流量分布に及ぼす傾き角の影響, Transactions of The Japan Society of Mechanical Engineers, Series B, Vol.62, No.600, 2950-2956, 1996. (Summary) 傾斜上昇環状流の局所液滴流量を等速吸引法によって測定し，管路の傾きが液滴流量分布および液滴発生限界に及ぼす影響を明らかにした．
11.	Masanori Kiyota, Itsuki Morioka, Akiharu Ousaka and 藤川和彦 : 多段水平管上を流下する臭化リチウム水溶液膜への水蒸気の吸収実験, Transactions of The Japan Society of Mechanical Engineers, Series B, Vol.62, No.598, 2344-2349, 1996. (Summary) 水平管群における吸収過程を調べる目的で縦1列での実験を行ったものである．垂直方向に1∼3本の水平管を配置し，吸収量の管位置による分布，平滑管及び2種類の加工を施した面で吸収過程への影響を比較した．
12.	Akiharu Ousaka, Itsuki Morioka, Masanori Kiyota and 仮屋崎侃 : 傾斜上昇環状二相流のホールドアップと摩擦圧力損失に及ぼす傾き角の影響, Transactions of The Japan Society of Mechanical Engineers, Series B, Vol.61, No.592, 4353-4358, 1995. (Summary) 傾き角の大きい管路における環状流に対して，界面せん断応力や液滴付着量に関する整理式の検討も含めて，ホールドアップと摩擦圧力損失および環状流への遷移に及ぼす傾き角の影響を明らかにした．
13.	Masanori Kiyota, Itsuki Morioka and Akiharu Ousaka : 臭化リチウム水溶液膜への水蒸気吸収に及ぼす管表面形状の影響, Transactions of The Japan Society of Mechanical Engineers, Series B, Vol.61, No.584, 1436-1441, 1995. (Summary) 臭化リチウム水溶液膜への水蒸気吸収促進を目的とし，数種類の管の表面形状について実験的に検討し，吸収促進効果の大きい表面形状を明らかにした．さらに，吸収過程における新しい解析法を提案した．
14.	Masanori Kiyota, Itsuki Morioka and Akiharu Ousaka : Effect of Surface Geometry on Steam Absorption into a Falling Film of Aqueous Solution of LiBr, Heat Transfer Japanese Research, Vol.24, No.1, 68-79, 1995. (Summary) 臭化リチウム水溶液膜への水蒸気吸収促進を目的とし，数種類の管の表面形状について実験的に検討し，吸収促進効果の大きい表面形状を明らかにした．
15.	Masanori Kiyota, Itsuki Morioka and Masanori Kiyoi : Numerical Analysis of Waveforms of Falling Films, Transactions of The Japan Society of Mechanical Engineers, Series B, Vol.60, No.580, 4177-4184, 1994. (Summary) In order to clarify the behavior of falling films in the absorber of absorption chillers, numerical analysis of the falling films in the transition regions was performed. Since the treatment of the surface becomes difficult in x-y cooridinates, y coordinates are normalized by the film thickness to fix the surface. The fundamental equations are changed into conservative forms by the method of Shyy et al. before discretization. The critical wavelengths for an aqueous solution of lithium bromide and water were determined by the proposed method. The film Reynolds numbers were varied in the range of 10-200. For a few cases in the unstable region, the waveforms are calculated for the initial disturbance of 10% of average film thickness. As they grow, slopes of waves become steeper at the front, and for Ref =100, film is divided into a thin base film of uniform thickness and a liquid mass sliding on it. (Keyword) numerical analysis / Wave / Absorption Refrigeration / Falling Film / Lithium Bromide (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282680870516096 (CiNii: 1390282680870516096)
16.	Itsuki Morioka, Masanori Kiyota and Ryuji Nakao : Absorption of Water Vapor into a Film of Aqueous Solution of LiBr Falling along a Vertical Pipe, JSME International Journal, Series B: Fluids and Thermal Engineering, Vol.36, No.2, 351-356, 1993. (Summary) The heat transfer surface used in the experiments is a chrome-plated smooth brass pipe of 28mm diameter and 1400mm length. The film Reynolds numbers are varied in the range of 40-400, which includes the range of real machines. The average absorptions mass flux is compared with the numerical results derived from the laminar flow model proposed in the previous paper. The agreement is good up to 100 in Re_f, but the experimental values are far higher above 200. This may be attributed to the wave motions on the film surface. Pictures show that the film is completely smooth only at Re_f below 20. Beyond 20, ring-shaped waves appear, but the surfaces between the waves are relatively smooth at Re_f below 200. The measurements of the film thickness show that its minimum is constant at about 0. 38mm, but its maximum thickness increases for Re_f larger than 60. (Keyword) Absorption Refrigeration / Mass Transfer / heat transfer / Absorption Mass Flux / Falling Film / Film Thickness (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1573387451886911360 (CiNii: 1573387451886911360)
17.	Itsuki Morioka and Masanori Kiyota : Numerical Method for the Absorption of Steam into Films of Aqueous Solution of LiBr, Transactions of The Japan Society of Mechanical Engineers, Series B, Vol.58, No.554, 3167-3172, 1992. (Summary) There are some analytical methods for the steam absorption process, but they do not achieve overall mass balance perfectly. In this paper, the model proposed in the previous paper is modified to include the velocities normal to the film and the change of film thickness. The basic equations are rewritten in the body-fitted coordinate system and solved by the control volume method. The numerical results for a stagnant film show good agreement with the analytical results. Falling film cases for the range of 20-1000 in Re used in absorption refrigeration are calculated by the proposed method. For Re=20, the flow rate and the film thickness increase by 10% and 3% respectively after flowing down 1m. For Re=1000, the increase of flow rate and film thickness are small but the velocities normal to the film are not negligible relative to the effect of diffusion. (Keyword) Absorption Refrigeration / numerical analysis / diffusion / Lithum Bromide / Falling Film (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001205894700544 (CiNii: 1390001205894700544)
18.	Itsuki Morioka, Masanori Kiyota, Akiharu Ousaka and Tsuneyuki Kobayashi : Analysis of Steam Absorption by a Subcooled Droplet of Aqueous Solution of LiBr, JSME International Journal, Series B: Fluids and Thermal Engineering, Vol.35, No.3, 458-464, 1992. (Summary) 水蒸気のサブクールされた臭化リチウム液滴への吸収に関して数値解析し，液滴内の温度分布と濃度分布ならびに吸収量の時間変動について実験·理論の両面から検討した．
19.	Akiharu Ousaka, Itsuki Morioka and 深野徹 : 水平管および水平に近い傾斜管内気液環状二相流, 混相流, Vol.6, No.1, 80-87, 1992. (Summary) 環状液膜流のじょう乱波の流れ方向の特性ならびにじょう乱波によって運ばれる液体輸送量について検討し，これらに与える傾斜角の影響を明かにした．
20.	Akiharu Ousaka, Itsuki Morioka and 深野徹 : 水平管および水平に近い傾斜管内気液環状二相流, Japanese Journal of Multiphase Flow, Vol.5, No.4, 332-342, 1991. (Summary) 二重構造モデルに基づいてじょう乱波と基底液膜に分離し，これらの時間変動特性が管周方向に有している差異を，傾斜角の影響も含めて，検討した．
21.	Itsuki Morioka, Masanori Kiyota and Ryuji Nakao : Absorption of water vapor into a film of aqueous solution of LiBr falling along a vertical pipe, Transactions of The Japan Society of Mechanical Engineers, Series B, Vol.57, No.543, 3916-3920, 1991. (Summary) The heat transfer surface used in the experiments was a chrome-plated smooth brass pipe of 28mm in diameter and 1400mm in length. The film Reynolds numbers were varied in the range of 40-400, which includes the range of real machines. The average absorption mass flux is compared with the numerical results derived from the laminar flow model proposed in the previous paper. The agreement is good up to 100 in Re_f, but the experimental values are far higher above 200. This may be attributed to the wave motions on the film surface. Pictures show that the film is completely smooth only below 20. Beyond 20, ring-shaped waves appear, but the surfaces between the waves are relatively smooth for Re_f below 200. The measurements of film the thickness show that its minimum is constant at about 0.38mm, but its maximum thickness increases for Re_f beyond 60. (Keyword) Absorption Refrigeration / Mass Transfer / heat transfer / Absorption Mass Flux / Falling Film / Film Thickness (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282680871962496 (CiNii: 1390282680871962496)
22.	Itsuki Morioka and Masanori Kiyota : 垂直管上を流下する臭化リチウム水溶液膜への水蒸気の吸収, Transactions of The Japan Society of Mechanical Engineers, Series B, Vol.57, No.543, 3916-3920, 1991. (Summary) 吸収冷凍機の吸収器で，垂直管外を吸収液が流下する場合の吸収量の測定を行った．Refで40∼400の範囲である．Refが100を越えると層流モデルによる予測値をかなり上回る．液膜の撮影写真によると，Refが140より大きい時，波の間にも乱れを伴うようになる．
23.	Itsuki Morioka and Masanori Kiyota : Absorption of Water Vapor into a Wavy Film of an Aqueous Solution of LiBr, JSME International Journal, Series B: Fluids and Thermal Engineering, Vol.34, No.2, 183-188, 1991. (Summary) 吸収冷凍機用吸収器を流れる液膜流が平滑でなく波をともなう場合の液膜内への吸収量の予測を行った．Refで20∼100の範囲である．吸収量は平滑流に比べて1.7∼2.4倍に増加することがわかった．
24.	Itsuki Morioka and Masanori Kiyota : 波状流域での臭化リチウム水溶液膜への水蒸気吸収, Transactions of The Japan Society of Mechanical Engineers, Series B, Vol.56, No.526, 1785-1789, 1990. (Summary) 吸収冷凍機用吸収器を流れる液膜流が平滑でなく波をともなう場合の液膜内への吸収量の予測を行った．Refで20∼100の範囲である．吸収流は平滑流に比べて1.7∼2.4倍に増加することがわかった．
25.	Itsuki Morioka and Masanori Kiyota : Heat Transfer from a Heated Fish Pond with a Vinyl Sheet Cover, JSME International Journal, Series B: Fluids and Thermal Engineering, Vol.32, No.4, 623-629, 1989. (Summary) 密閉されたハウス内の水温，室温，外気温，加熱量の間の関係について外気条件によりどのようになるか調べたものである．実測値をもとにエネルギバランスにより簡単なモデルを作り，関係をもとめた．
26.	Itsuki Morioka and Masanori Kiyota : Absorption of Water Vavor into a Film of Aqueous LiBr Solution Falling on a Horizontal Pipe, Transactions of The Japan Society of Mechanical Engineers, Series B, Vol.55, No.509, 216-220, 1989. (Summary) The improvement of absorbers is necessary for the LiBr-water absorption chiller; but the fundamental values, such as the mass transfer coefficients and the heat transfer coefficients in the absorber having horizontal tube banks as cooling tubes, are not well known. The aim of this paper is to propose and analytical model of a single-tube case and to compare it with the experiments. The absorbent flow is assumed to have the same velocity profile over the inclined flat plate. The boundary conditions at the film surface are extended from the vertical flat plate case. The conducted experimental range of parameters are Γ=0.005-0.07 kg/(m·s), T_f=26-38℃ and p=5-6 Torr. The obtained absorption rates are compared with the theoretical predictions. Mass transfer coefficients and heat transfer coefficients are found to lie in the range of (0.5-1.5)×10^<-4>m/s and 2.0-2.5kW/(m^2·K), respectively. (Keyword) Absorption Chillter / Absorber / Horizontal Pipe / Mass Transfer Coefficient / Heat Transfer Coefficient (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282681238482304 (CiNii: 1390282681238482304)
27.	Itsuki Morioka and Masanori Kiyota : Absorption of Water Vapor into a Lithium Bromide Water Solution Film Falling Along a Vertical Plate, Transactions of The Japan Society of Mechanical Engineers, Series B, Vol.53, No.485, 236-240, 1987. (Summary) An experimental study of the absorption process of water vapor into a lithium bromide solution film was performed. The lithium bromide solution is circulated between the absorber and the generator vessel. The absorber is a chrome-plated brass tube of 84 mm outer diameter and 400 mm length. The solution is fed from the annular slit at the top of the pipe. After absorbing water vapor, the weak solution is fed to the genetor for the recovery of concentration. The generated vapor is provided to the absorber vessel, and the enriched solution is then returned to the absorber. The absorbed water, which is measured as the vapor flow rate by a rotameter is plotted against cooling water temperature while keeping film thickness, inlet temperature and concentration constant. They are compared with the theoretical results by the method proposed previously. Although the experimental values are somewhat lower at 5 Torr, they showed good agreement with the theoretical ones. (Keyword) Absorption Refrigerator / Lithium Bromide / Water Vapor / experiment / Vertical Plate (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282681159636864 (CiNii: 1390282681159636864)
28.	Kazuma Urakawa, Itsuki Morioka and Masanori Kiyota : Absorption of Water Vapor into Lithium Bromide-Water Solution Film Falling along a Vertical Plate, Bulletin of JSME, Vol.52, No.476, 1766-1771, 1986. (Summary) 冷却された垂直壁上を吸収液が流下する場合の蒸気吸収量を予測するためのモデル化を行い，差分法で解いた．また数値解の妥当性の検討のためにプロフィール法による計算もあわせて行った．両者は良く一致する．
29.	浦川和馬, Itsuki Morioka and Masanori Kiyota : 垂直壁を流下する臭化リチウム水溶液膜への水蒸気の吸収, Transactions of The Japan Society of Mechanical Engineers, Series B, Vol.52, No.476, 1766-1771, 1986. (Summary) 冷却された垂直壁上を吸収液が流下する場合の蒸気吸収量を予測するためのモデル化を行い，差分法で解いた．また数値解の妥当性の検討のためにプロフィール法による計算もあわせて行った．両者は良く一致する．

Academic Paper (Unrefereed Paper):

1.	Itsuki Morioka and Masanori Kiyota : Enhancement of Absorption of Water Vapor into an Aqueous LiBr Solution Film by an Addition of Surface Active Agent, Bulletin of Faculty of Engineering, The University of Tokushima, Vol.35, 33-38, 1990. (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520290885166536576 (CiNii: 1520290885166536576)
2.	Itsuki Morioka and Masanori Kiyota : 高濃度臭化リチウム水溶液の拡散係数, Bulletin of Faculty of Engineering, The University of Tokushima, Vol.35, 25-31, 1990. (Summary) シュリーレン法により，臭化リチウム水溶液の濃度50∼60%，温度25∼45℃の範囲での拡散係数の測定を行った．結果を最小自乗整理して温度と濃度を与えて拡散係数を与える近似式を得た．
3.	Itsuki Morioka and Masanori Kiyota : Room Temperature inside Vinyl-Sheet House above a Heated Fish Pond, Bulletin of Faculty of Engineering, The University of Tokushima, Vol.34, 21-28, 1989. (Summary) 密閉されたハウス内の水温，室温，外気温，加熱量の間の関係について外気条件によりどのようになるかについて調べたものであり，実測値を線図に整理した． (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520290885197645696 (CiNii: 1520290885197645696)
4.	Kazuma Urakawa, Itsuki Morioka and Masanori Kiyota : 小型ボイラの煙道から漏出した燃焼ガスによるとみられる火災事故の一例, Bulletin of Faculty of Engineering, The University of Tokushima, Vol.1983, 21-34, 1983. (Summary) ボイラから発生した火災事故原因に関する考察を行った．
5.	浦川和馬, Itsuki Morioka and Masanori Kiyota : 水中に投下された溶融金属のフラグメンテーション, Bulletin of Faculty of Engineering, The University of Tokushima, Vol.25, 21-30, 1980. (Summary) 溶融金属と水が接触する際に発生する水蒸気爆発の発生条件を調べrるための実験である．爆発による破砕の程度を数値化するために破砕後の表面積を求め分類した．
6.	Kazuma Urakawa, Itsuki Morioka and Masanori Kiyota : 円筒状鋳塊の凝固に関する数値解, Bulletin of Faculty of Engineering, The University of Tokushima, Vol.24, 59-68, 1979. (Summary) 円筒金型内での凝固面位置の進展を予測する計算法について検討した．界面近くでの差分化はLazaridisの方法を用いて行った．具体的に冷却条件を変えた場合の計算例により有効性を示した．
7.	浦川和馬, Itsuki Morioka and Masanori Kiyota : 非定常熱伝導の数値計算における初期状態および境界面の取扱について, Bulletin of Faculty of Engineering, The University of Tokushima, Vol.24, 49-57, 1979. (Summary) 境界付近の計算要素の配置の仕方が計算精度に及ぼす影響について調べた．
8.	Kazuma URAKAWA, Itsuki Morioka and Masanori Kiyota : 可視化の方法による浮力流れの観察, Bulletin of Faculty of Engineering, The University of Tokushima, Vol.22, 63-67, 1977. (Summary) 水平線熱源上の浮力流れの揺動現象の観察実験を行った．

Proceeding of International Conference:

1.	Itsuki Morioka, Masanori Kiyota, Kenta Nakatsu and Masaki Tateno : Simulation of Steam Absorption in Vertical Plate-Type Absorption Chillers, Proceedings of the 4th JSME-KSME Thermal Engineering Conference, Vol.3, 641-644, Kobe, Oct. 2000. (Summary) 冷却平板を小間隔で規則的に配置した場合の蒸気吸収過程がどうなるか調べたものである．
2.	Itsuki Morioka, Isami Ooka, Masanori Kiyota and Hiroyuki Imagawa : Heat Exchanger Design Using Computer Simulation, Proceedings of the 3rd International Thermal Energy Congress, 24-29, Kitakyushu, Jul. 1997. (Summary) shell-tube型熱交換器の設計においては，過剰設計になる傾向がある．そこでより正確に熱移動量を推定できる設計法について考察提案したものである．
3.	Yoshihiro Noyama, Itsuki Morioka, Isami Ooka and Masanori Kiyota : Exergy Analysis for Absorption System, Proceedings of the 3rd International Thermal Energy Congress, 42-47, Kitakyushu, Jul. 1997. (Summary) 単効用吸収冷凍サイクルのエクセルギ解析を行ったものである．
4.	Masanori Kiyota, Itsuki Morioka and Akiharu Ousaka : Steam Absorption into Films of Lithium Bromide Solution Falling over Horizontal Pipes arranged in Vertical Column, Proceedings of the 3rd KSME-JSME Thermal Engineering Conference, Vol.2, 547-552, Kyongju, Oct. 1996. (Summary) 縦一列に配置した実験とモデル化を試みた．Refで5∼40の範囲である．流量が大きい時よく一致するが，低流量では予測より下がる．
5.	Itsuki Morioka, Masanori Kiyota and Akiharu Ousaka : Non-dimensional Correlation of Steam Absorption by a Falling Film Aqueous Solution of LiBr for Horizontal Pipes, Proceedings of the 3rd KSME-JSME Thermal Engineering Conference, Vol.2, 535-540, Kyongju, Oct. 1996. (Summary) 水平管上を流下する臭化リチウム水溶液膜への水蒸気の吸収を，関係するパラメータを無次元化して表すことを試みたものである．実験点を無次元式でうまく整理できることがわかった．
6.	Akiharu Ousaka, Tohru Nagashima, Akira Kariyasaki, Itsuki Morioka, Masanori Kiyota and Hidemitsu Mamoto : Effect of Inclination on Distribution of Entrainment Flow Rate in an Inclined Upward Annular Flow, Proceedings of the 3rd KSME-JSME Thermal Engineering Conference, Vol.1, 355-360, Kyongju, Oct. 1996. (Summary) 傾斜上昇環状流の局所液滴流量を等速吸引法によって測定し，管路の傾きが液滴流量分布および液滴発生限界に及ぼす影響を明らかにした．
7.	Masanori Kiyota, Itsuki Morioka and Akiharu Ousaka : Steam Absorption into Falling Films over Horizontal Pipes with Different Surface Conditions, Proceedings of the 4th ASME/JSME Thermal Engineering Joint Conference, Vol.4, 513-518, Maui, Mar. 1995. (Summary) 垂直方向に1∼3本の管を設置して吸収実験を行い，管位置により，蒸気吸収量などの特性値がどのように分布しているかを調べた．管表面にローレット加工すると，平滑管に比べて濡れ性が増し吸収量が増加することがわかった．
8.	Akiharu Ousaka, Akira Kariyasaki, Itsuki Morioka, Masanori Kiyota and Hiroshige Takano : The Flow Characteristics of a Nearly-Equal-Density Oil-Water Two-Phase Flow in a Horizontal Capillary Tube, Proceedings of the 4th ASME/JSME Thermal Engineering Joint Conference, Vol.2, 113-118, Maui, Mar. 1995. (Summary) 細管内における等密度の油·水混合流において，流動様式，圧力損失およびホールドアップを詳細に測定し，それらに及ぼす管径および粘性の影響を明らかにした．
9.	Kazuyoshi Kishishita, Itsuki Morioka, Masanori Kiyota and Akiharu Ousaka : Correlation of Steam Absorption by a Falling Film of Aqueous Solution of LiBr, Proceedings of the 2nd KSME-JSME Thermal Engineering Conference, Vol.3, 1-6, Kitakyushu, Oct. 1992. (Summary) 垂直管外壁を層流で流下する臭化リチウム水溶液膜の水蒸気吸収について解析し，実験値と比較·検討した．
10.	Itsuki Morioka, Akiharu Ousaka and Tohru Fukano : Air-Water Two-Phase Flow in Horizontal and Near Horizontal Tubes, --- 3rd Report, Disturbance Wave Characteristics and Liquid Transportation ---, Proceedings of the 2nd KSME-JSME Fluids Engineering Conference, Vol.1, 323-328, Seoul, Oct. 1990. (Summary) 本論文では水平および水平に近い管内の環状液膜流の形成機構を構築することを念頭にし，二重構造モデルに基づいて求めた擾乱波の特性と擾乱波が運ぶ輸送量を検討した．
11.	Akiharu Ousaka, Itsuki Morioka and Tohru Fukano : Air-Water Two-Phase Flow in Horizontal and Near Horizontal Tubes, --- 2nd Report, Circumferential Variations of Film Thickness Parameters ---, Proceedings of the 2nd KSME-JSME Fluids Engineering Conference, Vol.1, 317-322, Seoul, Oct. 1990. (Summary) 二重構造モデルに基づいてじょう乱波と基底液膜に分離し，これらの時間変動特性が管周方向に有している差異を，傾斜角の影響も含めて，検討した．
12.	Itsuki Morioka, Masanori Kiyota, Akiharu Ousaka and Tsuneyuki Kobayashi : Analysis on Steam Absorption into a Subcooled Droplet, Proceedings of the 1st KSME-JSME Thermal Engineering Conference, Vol.1, 346-350, Seoul, Oct. 1990. (Summary) 飽和温度よりも低い温度に冷却した吸収液の液滴が高速で水蒸気中を飛んでいる場合の蒸気吸収量を予測するための計算を行った．液滴径，液滴速度，過冷度などを変化させて行い検討した．
13.	Itsuki Morioka and Masanori Kiyota : Enhancement of Absorption of Water Vapor into an Aqueous LiBr Solution Film by Addition of Surface Active Agent, Proceedings of the 1st KSME-JSME Thermal Engineering Conference, Vol.1, 335-339, Seoul, Oct. 1990. (Summary) 吸収冷凍機では吸収を促進させるために界面活性剤を添加しているが，その理由が明らかにするためにモデル計算を行った．無添加に比べて4∼9倍の効果が得られるとの結果が得られた．
14.	Itsuki Morioka and Masanori Kiyota : Heat Transfer from a Heated Fish Pond with Vinyl sheet Cover, Proceedings of the 1st KSME-JSME Thermal Engineering Conference, Vol.1, 456-461, Seoul, Nov. 1988. (Summary) 密閉されたハウス内の水温，室温，外気温，加熱量の間の関係について外気条件によりどのようになるか調べたものである．実測値をもとにエネルギバランスにより簡単なモデルを作り，関係をもとめた．
15.	Kazuma Urakawa, Itsuki Morioka and Masanori Kiyota : Swaying Motion of the Buoyant Plume over a Horizontal Line Heat Source, Proceedings of the 1st ASME/JSME Thermal Engineering Joint Conference, Vol.4, 513-518, Honolulu, Mar. 1983. (Summary) 水平線熱源上に生じる浮力流れが揺動する現象についての実験で，その揺動の波長，周期，容器の大きさ，加熱量の間の関係について整理と考察をした．

Proceeding of Domestic Conference:

1.	Masanori Kiyota, Itsuki Morioka and Akihiro Maeda : Numerical calculation of flow down flat plates with protrusions, 日本機械学会講演論文集, Vol.075, No.1, 257-258, Mar. 2007.
2.	Masanori Kiyota, Itsuki Morioka and Takashi Usui : Steam absorption process into falling films inside air-cooled vertical pipes, 日本機械学会講演論文集, Vol.075, No.1, 235-236, Mar. 2007.
3.	Itsuki Morioka and Yoshihiro Tada : NIEを用いた技術者導入教育の試み, 平成18年度工学・工業教育研究講演会講演論文集, 622-623, Aug. 2006.
4.	Masanori Kiyota, Itsuki Morioka and Daisaku Hase : Steam absorption inside small bore tubes and its modelling, 日本機械学会2003年度年次大会講演論文集, 29-30, Aug. 2003.
5.	Itsuki Morioka, Masanori Kiyota and Minoru Asada : One idea for a compact absorber of absorption refrigerators, 平成14年度日本冷凍空調学会学術講演会講演論文集, 439-440, Nov. 2002.
6.	Masanori Kiyota, Itsuki Morioka and Daisuke Matsuura : Absorption characteristics of steam into absorbent falling inside small bore tubes, 日本機械学会講演論文集, Vol.025-2, 79-80, Oct. 2002.
7.	Isami Ooka and Itsuki Morioka : 高炉を利用した電力併産のための石炭ガス化の考察, 日本機械学会熱工学講演会講演論文集, No.01-9, 251-252, Nov. 2001.
8.	Masanori Kiyota, Itsuki Morioka and Tomohiro Matsuyama : 水-臭化リチウム系管内吸収に及ぼす管径の影響, 第38回日本伝熱シンポジウム講演論文集, Vol.1, 79-80, May 2001. (Summary) 外径が28mm，19.05mm，15mm，10mmの管を用いて実験を行った．膜レイノルズ数で5∼200の範囲である．蒸気吸収量は，15mm以上の管では，数値計算による予測と比較的よく一致するが，15mmより細い管では予測より小さくなることがわかった． (Keyword) Absorption Refrigeration / Pipe Inside / Absorption Rate / Heat Transfer Coefficient
9.	Masanori Kiyota, Itsuki Morioka and Tomohiro Matsuyama : 水-臭化リチウム系の管内吸収におよぼす管径の影響, 日本機械学会中国四国支部徳島地方講演会講演論文集, No.005-2, 151-152, Oct. 2000.
10.	Masanori Kiyota, Itsuki Morioka and Hiroto Takeuchi : 垂直管内を流下する臭化リチウム水溶液膜への水蒸気吸収, 第37回日本伝熱シンポジウム講演論文集, Vol.3, 823-824, May 2000.
11.	Masanori Kiyota, Itsuki Morioka and Hiroto Takeuchi : 水-臭化リチウム系の管内吸収, 日本機械学会中国四国支部岡山地方講演会講演論文集, No.985-2, 101-102, Oct. 1998.
12.	Masanori Kiyota, Itsuki Morioka and Yoshinobu Sano : 水平多段管上を流下する臭化リチウム水溶液膜中への水蒸気吸収, 第35回日本伝熱シンポジウム講演論文集, Vol.3, 849-850, May 1998.
13.	永島徹, Akiharu Ousaka, 仮屋崎侃, Itsuki Morioka and Masanori Kiyota : 傾斜上昇環状二相流における液滴流量分布, 日本機械学会第73期全国大会講演論文集(Ⅱ), 49-50, Sep. 1995.
14.	Itsuki Morioka, Masanori Kiyota, Akiharu Ousaka and 大平浩康 : 水平管に沿って流下する臭化リチウム水溶液膜への水蒸気吸収の無次元整理, 第32回日本伝熱シンポジウム講演論文集, Vol.1, 185-186, May 1995.
15.	Akiharu Ousaka, Itsuki Morioka, Masanori Kiyota and 仮屋崎侃 : 傾斜管内気液環状二相流におけるホールドアップ, 第32回日本伝熱シンポジウム講演論文集, Vol.3, 827-828, May 1995.
16.	Masanori Kiyota, Itsuki Morioka, Akiharu Ousaka and 藤川和彦 : 水平吸収伝熱管表面形状の吸収性能への影響, 日本機械学会中国四国支部第33期総会·講演会講演論文集, 61-62, Mar. 1995.

Et cetera, Workshop:

1.	Masanori Kiyota, Itsuki Morioka and Akihiro Maeda : Numerical calculation of flow down flat plates with protrusions, 日本機械学会講演論文集, Vol.075, No.1, 257-258, Mar. 2007.
2.	Itsuki Morioka and Yoshihiro Tada : 徳島大学工学部機械工学科での技術者導入教育の試み, 第5回技術者導入教育研究会, Mar. 2006.
3.	Itsuki Morioka and Yoshihiro Tada : 技術者導入教育におけるアンケート結果, 第4回技術者導入教育研究会, Sep. 2005.
4.	Itsuki Morioka and Yoshihiro Tada : 徳島大学工学部機械工学科での技術者導入教育の試み, 第3回技術者導入教育研究会, Mar. 2005.
5.	Itsuki Morioka and Yoshihiro Tada : 機械工学科における技術者導入教育とその課題, 第2回技術者導入教育研究会, Sep. 2004.
6.	Itsuki Morioka and Yoshihiro Tada : 徳島大学工学部機械工学科における技術者導入教育, 第1回技術者導入教育研究会, Mar. 2004.
7.	Itsuki Morioka : ヒートポンプの持つ省エネルギー, 平成13年度未利用エネルギー活用地域熱供給システム啓発普及セミナー資料集, 108-117, Mar. 2002. (Summary) 未利用エネルギー活用地域熱供給システム啓発普及セミナーにおいて講演したテキストである．エネルギーの有効利用の最近の例として，地域冷暖房事例についてエネルギーの流れを説明し，次に有効エネルギーについて解説している．最後に，省エネルギーの対処法でまとめている．
8.	Masanori Kiyota and Itsuki Morioka : 水-臭化リチウム系の管内吸収, 中四国伝熱研究会ニュース, No.00-1, 16-17, Jul. 2000.
9.	Itsuki Morioka, Masanori Kiyota and Kenta Nakatsu : 平行平板型吸収器の吸収シミュレーション, 中四国伝熱研究会ニュース, No.98-2, 16-19, Dec. 1998.
10.	Akiharu Ousaka, Itsuki Morioka, Masanori Kiyota and 仮屋崎侃 : 傾斜上昇環状二相流のホールドアップと摩擦圧力損失に及ぼす傾き角の影響, 平成7年度第1回研究討論会, Apr. 1995. (Summary) 傾斜上昇環状二相流におけるホールドアップと摩擦圧力損失に及ぼす傾き角の影響を，広い範囲で系統的に測定し，それらに関する整理式を提案した．

Patent:

1.	Itsuki Morioka, Masanori Kiyota and Ryu Honma : 吸収冷温水器, 10-5711 (Jan. 1998), 11-201585 (Jul. 1999), .

Professor Emeritus : Morioka, Itsuki

Research

Field of Study

Subject of Study

Book / Paper

Academic Paper (Judged Full Paper):

Academic Paper (Unrefereed Paper):

Proceeding of International Conference:

Proceeding of Domestic Conference:

Et cetera, Workshop:

Patent: