Hydrodynamics and Heat Transfer Characteristics of Drag-Reducing Trimethylolethane Solution and Suspension by Cationic Surfactant

Indartono, Yuli Setyo; Usui, Hiromoto; Suzuki, Hiroshi; Komoda, Yoshiyuki; Nakayama, Kousuke

doi:10.1252/jcej.39.623

Cited by 24 publications

(10 citation statements)

References 23 publications

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“…On the other hand, the friction coefficient of TME solution without surfactants shows very high values as pointed out by Indartono et al (2006). This is because the viscosity of TME solution is much higher than that of water as shown later.…”

mentioning

confidence: 68%

“…This causes significant energy loss in transportation and cancels effect of flow rate reduction. To solve this problem, Indartono et al (2006) and Suzuki et al (2006) reported that drag reduction technology with cationic surfactants can be applied to TME hydrate slurry. A small amount of a kind of surfactant is well known to cause very effective drag reduction (reviewed by Gyr andBewersdorff, 1995 and.…”

Section: Introductionmentioning

confidence: 99%

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Drag reduction characteristics of trimethylolethane hydrate slurries treated with surfactants

Suzuki

Wada

Komoda

et al. 2009

International Journal of Refrigeration

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mentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Drag reduction characteristics of trimethylolethane hydrate slurries treated with surfactants

Suzuki

Wada

Komoda

et al. 2009

International Journal of Refrigeration

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“…Some researchers are using this equation into account besides to the equation for Non-Newtonian fluid. Among them are Komono et.al (2013) using ice slurry [18], Indartono et.al (2006) using fluid trimethylolethane [7], and Chen at.al (2014) using microencapsulated phase change material from paraffin [19]. Based on the above salt hydrate of Na2HPO4 still allowing assumed as a Newtonian fluid at a temperature of 5°C due to the concentration of the solid mass of only 9.1%, but for the salt hydrate of CaCl2 already exceed the concentration limits.…”

Section: Pressure Drop In Phase Change Temperaturementioning

confidence: 99%

“…(2006) discovered an increase in friction coefficient due to the use of PCM from trimethylolethane (TME) [7]. Fluid density and viscosity greatly affect pressure drop.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Flow Characters of Salt Hydrate Slurry in Phase Change Temperature Range

Irsyad¹,

Indartono²,

Pasek³

et al. 2017

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Abstract.One of the efforts in minimizing energy consumption chiller type air conditioning system is the use of phase changing material in secondary refrigerant. Secondary refrigerant functions to obtain heat from the air to cool a room and to release heat in chiller evaporator. Based on working temperature of secondary refrigerant, the fluid can flow in liquid form, and can also be in fluid solid form or slurry at the temperature of its phase change. This research studies the effect of temperature toward flow characteristics, with the parameter analyzed being the pressure decrease and friction coefficient. Besides that, in order to support data analysis, it was initiated by viscosity testing, density and concentration of solid mass. Data taken were viscosity, density, solid mass concentrate, and pressure difference found in copper pipe. Data were taken for several fluid temperatures, and at pressure decrease was added by variation of flow speed. Hydrate salt tested were CaCl2 and Na2HPO4. Viscosity and density increased with the decrease in temperature. The formation of solid particles within phase change temperature range also gave an impact on the increase in the value of viscosity and density. Pressure drop increased when using hydrate salt fluid. The use of CaCl2 solution resulted in the highest pressure decrease. This salt hydrate has far higher viscosity and density compared to water. This has an effect toward an increase in pressure drop. This increase started to be significant in the phase change temperature area in which solid particle started to form. The same thing happened in the friction coefficient value.

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“…In addition, the particles agglomerate and disperse in the slurry, imparting non-Newtonian characteristics to the slurry. [5][6][7][8][9] To increase slurry fluidity, the addition of surfactants that form drag-reducing rod-like micelles [10][11][12][13][14][15] , polymers 3,16) , and some types of brines 1,9,17,18) have been tested to prevent particle agglomeration. These additives also enhance the non-Newtonian behavior of the slurries.…”

Section: Introductionmentioning

confidence: 99%

Crystal Growth and Viscosity Behaviors of Ammonium Alum Hydrate Solution with PVA in Shear Flow

Toyoda

Hidema

Suzuki

et al. 2014

J. Soc. Rheol., Jpn

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Hydrodynamics and Heat Transfer Characteristics of Drag-Reducing Trimethylolethane Solution and Suspension by Cationic Surfactant

Cited by 24 publications

References 23 publications

Drag reduction characteristics of trimethylolethane hydrate slurries treated with surfactants

Drag reduction characteristics of trimethylolethane hydrate slurries treated with surfactants

Experimental Study on Flow Characters of Salt Hydrate Slurry in Phase Change Temperature Range

Crystal Growth and Viscosity Behaviors of Ammonium Alum Hydrate Solution with PVA in Shear Flow

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