Sarawut Sirikasemsuk | Rajamangala University of Technology Suvarnabhumi (original) (raw)

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Papers by Sarawut Sirikasemsuk

Applied Thermal Engineering, 2015

A desired circulatory flow in flat-plate closed-loop pulsating heat pipes (FP-CLPHPs), which may ... more A desired circulatory flow in flat-plate closed-loop pulsating heat pipes (FP-CLPHPs), which may ameliorate electronic thermal management, was achieved by using the new idea of interconnecting channels (ICs) to decrease flow resistance in one direction and increase the total heat transfer of fluid. In order to experimentally investigate the effects of the IC, two aluminum flat-plate thermal spreaders-one with ICs (IC-FP-CLPHP) and one without them-were fabricated. The FP-CLPHPs were charged with ethanol as working fluid with filling ratios of 35%, 50%, 65%, and 80% by volume. Performance of interconnecting channels in different heat inputs was explored, and the results demonstrated the higher performance of pulsating heat pipes with ICs in comparison with heat pipes without them in a wide range of heat inputs and filling ratios. It has been observed that the most efficient performance of IC-FP-CLPHP occurred at the filling ratio of 65%. Flow visualization indicated that interconnecting channels affect the flow regime and enhance flow circulation and heat transfer in CLPHPs. In furtherance of investigating the viability of the idea, numerical procedure has been followed on a single-phase liquid to show the role of interconnecting channels in achieving one-way flow.

Front. Heat Mass Transf.

This paper investigates the working fluid with different flow directions on the battery managemen... more This paper investigates the working fluid with different flow directions on the battery management cooling system with de-ionized water and ferrofluid (0.015%by volume). The pack of batteries with two different coolant directions (Models I, II) used in the present study with sixty Li-ion cylindrical cells (25.2V and 30A) are tested under the trickle method for charged process and constant ampere for the discharged process to consider the battery module temperature distribution and cooling performance. The uniform temperatures of the battery pack significantly affect the long lifecycle and thermal performance. It is found that average temperatures are nearly constant at about 28.5 o C and 29.65 o C for models I and II, respectively. Decreasing the maximum temperature of the pack and the temperature gradient across the cell results in the decreasing reverse effect of the cell. In addition, the cooling model I gives the temperature gradient across the cell less than those from model II. In addition, the improved thermal physical properties of the coolant (Ferrofluid) significantly affect the battery pack decreasing operating temperature, compared with de-ionized water. However, the cooling system optimized condition, including the battery module with different operating conditions on a large scale, has been done for more extensive thermal performance and a more significant long lifecycle.

International Journal of Heat and Technology

We investigated the results of the cooling performance of the pulsating water/nanofluids flowing ... more We investigated the results of the cooling performance of the pulsating water/nanofluids flowing in the thermoelectric cooling module for cooling electric vehicle battery systems. The experimental system was designed and constructed to consider the effects of the water block configuration, hot and cold side flow rates, supplied power input, and coolant types on the cooling performance of the thermoelectric module. The measured results from the present study with the Peltier module are verified against those without the thermoelectric module. Before entering the electric vehicle battering system with a Peltier module, the inlet coolant temperatures were 2.5-3.5℃ lower than those without the thermoelectric system. On the hot side, the maximum COP of the thermoelectric cooling module was 1.10 and 1.30 for water and nanofluids as coolant, respectively. The results obtained from the present approach can be used to optimize the battery cooling technique to operate in an appropriate temper...

International Journal of Engineering & Technology, 2018

With supply chains becoming increasingly global, the issue of bullwhip effect, a phenomenon attri... more With supply chains becoming increasingly global, the issue of bullwhip effect, a phenomenon attributable to demand fluctuation in the upstream section of the supply chains, has received greater attention from many researchers. The phenomenon in which the variation of upstream members' orders is amplified than the variation of downstream members' demands in the supply chain is called the bullwhip effect (BWEF). Most of existing research studies did not realize the demand dependency of market demands. Thus, this research focused on the study of the influence of the demand correlation coefficient between two market groups on the BWEF. The incoming demand processes are assumed the separate first-order moving-average, [MA(1)] demand patterns. The scope of the supply chain structure used in this research is composed of one manufacturer and two distribution centers. The general result reveals that the coefficient of correlation is one of several factors affecting the BWEF.

International Journal of Energy Research, 2021

The batteries have been continuously for obtaining the high voltage platform and high density of ... more The batteries have been continuously for obtaining the high voltage platform and high density of energy with long lifecycle. The operating temperature of the battery cell has a significant effect on the thermal performance. This paper aims to consider the 18 650‐type lithium‐ion battery pack's thermal characteristics with the thermoelectric module using ferrofluid as a coolant. The experiment apparatus is test to determine the lithium‐ion battery pack's temperature distributions. Effects of the relevant parameters; hot and cold side flow rates (0.03‐0.05 m3/hr), supplied voltage through thermoelectric (8‐12 V), coolant types (De‐ionized water and ferrofluid), and ferrofluid concentrations (0.005%‐0.015% by volume) on the battery pack's cooling performance are considered. It is found that the thermoelectric cooling system significantly affects the battery pack cooling and gives the temperature of battery below 30°C. Higher cold and hot side flow rates can decrease average battery cell temperature by 3°C to 5°C, and the obtained uniformity temperature is below 3°C. Besides, ferrofluid concentration significantly reduces the average battery cell temperature when compared with deionized water. The proposed cooling system demonstrates the advantage of the electrical vehicle battery pack with the thermal cooling system. However, the optimized battery thermal management system still performs much better than the original one for various coolant flow rates and for the situation of heat generation rate.

Case Studies in Thermal Engineering, 2020

Abstract Due to higher power density, battery thermal management systems are suitable for cooling... more Abstract Due to higher power density, battery thermal management systems are suitable for cooling battery packages due to maximum temperature has a significant effect on the energy storage, durability, life cycle, and efficiency. Therefore, choosing a proper cooling method for an electric vehicle (EV) battery module to maintain the temperature in the appropriate range is essentially required. This work presents a computational analysis approach to characterize the temperature distribution and pressure drop using nanofluids flowing in the corrugated mini-channel of the EV battery cooling module. The EV battery modules consist of 444 cylindrical lithium-ion cell batteries (18650 type). It is found that the temperature distributions are the most sensitive to the flow direction of coolant, mass flow rate, and coolant types. The best cooling performance of the proposed module (Model II) is obtained with nanofluids as coolant showed 28.65% reduced the maximum temperature as compared with the conventional cooling module (Model I). However, the pressure drop also increases. Besides, the nanofluids as coolant give the cooling capacity higher than that water as a coolant. The present approach from this study can be able to optimize the battery thermal management system for an electric vehicle with an appropriate temperature range.

Applied Thermal Engineering, 2015

A desired circulatory flow in flat-plate closed-loop pulsating heat pipes (FP-CLPHPs), which may ... more A desired circulatory flow in flat-plate closed-loop pulsating heat pipes (FP-CLPHPs), which may ameliorate electronic thermal management, was achieved by using the new idea of interconnecting channels (ICs) to decrease flow resistance in one direction and increase the total heat transfer of fluid. In order to experimentally investigate the effects of the IC, two aluminum flat-plate thermal spreaders-one with ICs (IC-FP-CLPHP) and one without them-were fabricated. The FP-CLPHPs were charged with ethanol as working fluid with filling ratios of 35%, 50%, 65%, and 80% by volume. Performance of interconnecting channels in different heat inputs was explored, and the results demonstrated the higher performance of pulsating heat pipes with ICs in comparison with heat pipes without them in a wide range of heat inputs and filling ratios. It has been observed that the most efficient performance of IC-FP-CLPHP occurred at the filling ratio of 65%. Flow visualization indicated that interconnecting channels affect the flow regime and enhance flow circulation and heat transfer in CLPHPs. In furtherance of investigating the viability of the idea, numerical procedure has been followed on a single-phase liquid to show the role of interconnecting channels in achieving one-way flow.

Front. Heat Mass Transf.

This paper investigates the working fluid with different flow directions on the battery managemen... more This paper investigates the working fluid with different flow directions on the battery management cooling system with de-ionized water and ferrofluid (0.015%by volume). The pack of batteries with two different coolant directions (Models I, II) used in the present study with sixty Li-ion cylindrical cells (25.2V and 30A) are tested under the trickle method for charged process and constant ampere for the discharged process to consider the battery module temperature distribution and cooling performance. The uniform temperatures of the battery pack significantly affect the long lifecycle and thermal performance. It is found that average temperatures are nearly constant at about 28.5 o C and 29.65 o C for models I and II, respectively. Decreasing the maximum temperature of the pack and the temperature gradient across the cell results in the decreasing reverse effect of the cell. In addition, the cooling model I gives the temperature gradient across the cell less than those from model II. In addition, the improved thermal physical properties of the coolant (Ferrofluid) significantly affect the battery pack decreasing operating temperature, compared with de-ionized water. However, the cooling system optimized condition, including the battery module with different operating conditions on a large scale, has been done for more extensive thermal performance and a more significant long lifecycle.

International Journal of Heat and Technology

We investigated the results of the cooling performance of the pulsating water/nanofluids flowing ... more We investigated the results of the cooling performance of the pulsating water/nanofluids flowing in the thermoelectric cooling module for cooling electric vehicle battery systems. The experimental system was designed and constructed to consider the effects of the water block configuration, hot and cold side flow rates, supplied power input, and coolant types on the cooling performance of the thermoelectric module. The measured results from the present study with the Peltier module are verified against those without the thermoelectric module. Before entering the electric vehicle battering system with a Peltier module, the inlet coolant temperatures were 2.5-3.5℃ lower than those without the thermoelectric system. On the hot side, the maximum COP of the thermoelectric cooling module was 1.10 and 1.30 for water and nanofluids as coolant, respectively. The results obtained from the present approach can be used to optimize the battery cooling technique to operate in an appropriate temper...

International Journal of Engineering & Technology, 2018

With supply chains becoming increasingly global, the issue of bullwhip effect, a phenomenon attri... more With supply chains becoming increasingly global, the issue of bullwhip effect, a phenomenon attributable to demand fluctuation in the upstream section of the supply chains, has received greater attention from many researchers. The phenomenon in which the variation of upstream members' orders is amplified than the variation of downstream members' demands in the supply chain is called the bullwhip effect (BWEF). Most of existing research studies did not realize the demand dependency of market demands. Thus, this research focused on the study of the influence of the demand correlation coefficient between two market groups on the BWEF. The incoming demand processes are assumed the separate first-order moving-average, [MA(1)] demand patterns. The scope of the supply chain structure used in this research is composed of one manufacturer and two distribution centers. The general result reveals that the coefficient of correlation is one of several factors affecting the BWEF.

International Journal of Energy Research, 2021

The batteries have been continuously for obtaining the high voltage platform and high density of ... more The batteries have been continuously for obtaining the high voltage platform and high density of energy with long lifecycle. The operating temperature of the battery cell has a significant effect on the thermal performance. This paper aims to consider the 18 650‐type lithium‐ion battery pack's thermal characteristics with the thermoelectric module using ferrofluid as a coolant. The experiment apparatus is test to determine the lithium‐ion battery pack's temperature distributions. Effects of the relevant parameters; hot and cold side flow rates (0.03‐0.05 m3/hr), supplied voltage through thermoelectric (8‐12 V), coolant types (De‐ionized water and ferrofluid), and ferrofluid concentrations (0.005%‐0.015% by volume) on the battery pack's cooling performance are considered. It is found that the thermoelectric cooling system significantly affects the battery pack cooling and gives the temperature of battery below 30°C. Higher cold and hot side flow rates can decrease average battery cell temperature by 3°C to 5°C, and the obtained uniformity temperature is below 3°C. Besides, ferrofluid concentration significantly reduces the average battery cell temperature when compared with deionized water. The proposed cooling system demonstrates the advantage of the electrical vehicle battery pack with the thermal cooling system. However, the optimized battery thermal management system still performs much better than the original one for various coolant flow rates and for the situation of heat generation rate.

Case Studies in Thermal Engineering, 2020

Abstract Due to higher power density, battery thermal management systems are suitable for cooling... more Abstract Due to higher power density, battery thermal management systems are suitable for cooling battery packages due to maximum temperature has a significant effect on the energy storage, durability, life cycle, and efficiency. Therefore, choosing a proper cooling method for an electric vehicle (EV) battery module to maintain the temperature in the appropriate range is essentially required. This work presents a computational analysis approach to characterize the temperature distribution and pressure drop using nanofluids flowing in the corrugated mini-channel of the EV battery cooling module. The EV battery modules consist of 444 cylindrical lithium-ion cell batteries (18650 type). It is found that the temperature distributions are the most sensitive to the flow direction of coolant, mass flow rate, and coolant types. The best cooling performance of the proposed module (Model II) is obtained with nanofluids as coolant showed 28.65% reduced the maximum temperature as compared with the conventional cooling module (Model I). However, the pressure drop also increases. Besides, the nanofluids as coolant give the cooling capacity higher than that water as a coolant. The present approach from this study can be able to optimize the battery thermal management system for an electric vehicle with an appropriate temperature range.