Heat transfer performance of a newly developed ice slurry generator: A comparative study

Mouneer, Tarek A.; El-Morsi, Mohamed; Nosier, M. A.; Mahmoud, Nabil A.

doi:10.1016/j.asej.2011.05.004

“…Regarding ice slurries, brine is considered to be the continuous phase while ice crystals consist the dispersed phase. Mouneer et al (2010) have reported six types of ice slurry production which include mechanical scraping, fluidized bed, direct contact or direct injection, vacuum freezing, oscillatory moving cooled wall and supercooling methods. With respect to other PCM slurries, the HTF is the continuous and the PCM the dispersed phase (Youssef, 2013).…”

Section: Phase Change Slurriesmentioning

confidence: 99%

Thermal Energy Storage For Gas Turbine Power Augmentation

Gkoutzamanis

¹

,

Chatziangelidou

²

,

Efstathiadis

³

et al. 2019

J. Glob. Power Propuls. Soc.

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This work is concerned with the investigation of thermal energy storage (TES) in relation to gas turbine inlet air cooling. The utilization of such techniques in simple gas turbine or combined cycle plants leads to improvement of flexibility and overall performance. Its scope is to review the various methods used to provide gas turbine power augmentation through inlet cooling and focus on the rising opportunities when these are combined with thermal energy storage. The results show that there is great potential in such systems due to their capability to provide intake conditioning of the gas turbine, decoupled from the ambient conditions. Moreover, latent heat TES have the strongest potential (compared to sensible heat TES) towards integrated inlet conditioning systems, making them a comparable solution to the more conventional cooling methods and uniquely suitable for energy production applications where stabilization of GT air inlet temperature is a requisite. Considering the system's thermophysical, environmental and economic characteristics, employing TES leads to more than 10% power augmentation.

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“…Regarding ice slurries, brine is considered to be the continuous phase while ice crystals consist the dispersed phase. Mouneer et al (2010) have reported six types of ice slurry production which include mechanical scraping, fluidized bed, direct contact or direct injection, vacuum freezing, oscillatory moving cooled wall and supercooling methods. With respect to other PCM slurries, the HTF is the continuous and the PCM the dispersed phase (Youssef Z., 2013).…”

Section: Inlet Cooling With Latent Heat Tesmentioning

confidence: 99%

Thermal Energy Storage for Gas Turbine Power Augmentation

Gkoutzamanis¹,

Chatziangelidou²,

et al. 2019

View full text Add to dashboard Cite

This work is concerned with the investigation of thermal energy storage (TES) in relation to gas turbine inlet air cooling. The utilization of such techniques in simple gas turbine or combined cycle plants leads to improvement of flexibility and overall performance. Its scope is to review the various methods used to provide gas turbine power augmentation through inlet cooling and focus on the rising opportunities when these are combined with thermal energy storage. The results show that there is great potential in such systems due to their capability to provide intake conditioning of the gas turbine, decoupled from the ambient conditions. Moreover, latent heat TES have the strongest potential (compared to sensible heat TES) towards integrated inlet conditioning systems, making them a comparable solution to the more conventional cooling methods and uniquely suitable for energy production applications where stabilization of GT air inlet temperature is a requisite. Considering the system's thermophysical, environmental and economic characteristics, employing TES leads to more than 10% power augmentation.

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“…Existing studies on the scraped-surface method for making ice slurry mainly focus on the heat and mass transfer characteristics of the ice crystal formation process [14][15][16][17]. Qin et al [14] studied the heat transfer of the scraped-surface heat exchanger via laboratory experiments, and found that the heat transfer coefficient with phase change was about three to five times greater than that without phase change.…”

Section: Introductionmentioning

confidence: 99%

Performance Study and Efficiency Improvement of Ice Slurry Production by Scraped-Surface Method

Liu

¹

,

Li

²

,

Zhuang

³

et al. 2018

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In this study, the performance of ice slurry production by scraped-surface method was experimentally investigated. Temperature change characteristics, ice packing fraction (IPF) of ice slurry, power consumption of scraping system and coefficient of performance (COP) were measured by varying the concentration of sodium chloride solution, scraping speed, and solution flow rate. The effect of nanosilica on efficiency of ice slurry production was also studied. The results showed that scraping power consumption accounted for only a small proportion (about 5%) of the total power consumption of the system. An increase in the concentration of sodium chloride caused a decrease in the IPF and a decrease in the COP of the system. With the solution flow rate at 1.3 m3/h and scraping speed at 13 rpm, the maximum COP (2.43) was obtained. Furthermore, the addition of nanosilica had a significant effect on improving the system COP.

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Heat transfer performance of a newly developed ice slurry generator: A comparative study

Cited by 16 publications

References 11 publications

Thermal Energy Storage For Gas Turbine Power Augmentation

Thermal Energy Storage For Gas Turbine Power Augmentation

Thermal Energy Storage for Gas Turbine Power Augmentation

Performance Study and Efficiency Improvement of Ice Slurry Production by Scraped-Surface Method

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