Investigation on flow and heat transfer characteristics of ice slurry without additives in a plate heat exchanger

Mi, Sha; Cai, Lingling; Ma, Kebo; Liu, Zhiqiang

doi:10.1016/j.ijheatmasstransfer.2018.05.148

Cited by 43 publications

(6 citation statements)

References 29 publications

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“…where w is the mass concentration of sodium chloride, %. e partially crystallized sodium chloride solution is in a two-phase flow state in the device and has high fluidity [32]. Compared with the traditional static ice storage technology, the ice crystal cold storage can realize the continuous crystallization of the cold storage device, and the ice crystal in the solution has a higher specific surface area for heat exchange.…”

Section: Energy Consumption Model Of Phase Change Heat Storage Devicementioning

confidence: 99%

Computational Intelligence Powered Performance Analysis on Phase Change Heat Storage Air Source Heat Pump System

Yin¹,

Zhan

et al. 2022

Computational Intelligence and Neuroscience

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Aiming at the performance deterioration of air source heat pump at low temperature in cold area, an air source heat pump system with sodium chloride aqueous solution as low temperature phase change heat storage material was proposed to increase the air inlet temperature of the unit under low temperature conditions and improve the low temperature performance of the heat pump unit. The system form, unit energy consumption model, and economic model were given, and the operating economy of the traditional electric auxiliary heat air source heat pump system and the phase change heat storage air source heat pump system were compared through computational intelligence powered methods. On this basis, the operation economy of the heat pump system using different concentrations of sodium chloride solution as the heat storage material was simulated and optimized, and the operation efficiency and energy-saving performance of the system were analyzed by taking an actual residential building in a cold area as an example. The simulation results showed that the Heating Seasonal Performance Factor (HSPF) of the heat pump system using 8.5% sodium chloride aqueous solution as the heat storage material is 2.24, and the HSPF of the traditional electric auxiliary heat pump system is 1.83. Compared with the traditional electric auxiliary heat pump system, the phase change heat storage heat pump system saves heating energy consumption by 19.6% and defrosting energy consumption by 38.8%. The heat pump system using 10% sodium chloride aqueous solution as the heat storage material has the best operating economy, and the system HSPF is 2.33, which saves heating energy consumption by 23.2% and defrosting energy consumption by 34% compared with the traditional heat pump system. The operation condition of phase change heat storage air source heat pump system is stable, and the system performance is significantly improved.

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Section: Energy Consumption Model Of Phase Change Heat Storage Devicementioning

confidence: 99%

Computational Intelligence Powered Performance Analysis on Phase Change Heat Storage Air Source Heat Pump System

Yin¹,

Zhan

et al. 2022

Computational Intelligence and Neuroscience

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“…Meanwhile, the package icing works by the water of crushed ice flowing through the broccoli, thus exchanging heat with the broccoli while the air temperature increases. The obvious characteristics of phase transition cause the ice to maintain the temperature at a lower level and the logarithmic mean of temperature is greater [36]. Thus, the ice-packaging technique had many advantages, such as fast cooling capability as well as convenient transportation [37].…”

Section: Evolution Of the Temperature During Precoolingmentioning

confidence: 99%

Improving Shelf Life, Maintaining Quality, and Delaying Microbial Growth of Broccoli in Supply Chain Using Commercial Vacuum Cooling and Package Icing

Dirapan

Boonyakiat²,

Poonlarp

2021

Horticulturae

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Poor and inconsistent quality is a major barrier to increasing produce consumption, and the lack of shelf-life after purchase is the quality issue at retail displays of produce. This research aimed to investigate and identify cooling techniques, namely vacuum cooling and package icing used in supply chains, and any resulting extension of broccoli shelf-life, maintenance of physicochemical quality, and delay in microbial growth at retail stores. Broccoli (Brassica oleracea var. italica cv. Montop) sustainably grown in the highlands of northern Thailand, Chiang Mai Province, under the Royal Project Foundation was experimented on vacuum cooling and package icing were selected to precool broccoli to 4 ± 1 °C. The effects of vacuum cooling using a final pressure of 0.6 kPa for 30 min and package icing using liner Styrofoam boxes (the best ratio of broccoli to crushed ice was 1:1 w/w) on physicochemical qualities, microbial growth, and shelf-life in simulated refrigerated retail displays were examined. The results illustrated that the shelf-life and quality of broccoli could be extended using both vacuum cooling and package icing. Both precooling techniques inhibited the yellowing of florets, provided high sensory scores, delayed microbial growth, and could be able to extend the shelf-life of broccoli. However, package icing offered greater potential for maintaining quality, especially retaining bioactive compounds, and extending shelf-life, thereby increasing the produce market window from 5 to 12 days at 8 ± 1 °C with 85% RH. Therefore, package icing was recommended in the supply chain for fresh broccoli cv. Montop grown in northern Thailand.

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“…Given the advancement in the numerical techniques and the complexity involved in experimental setups, computational fluid dynamics (CFD) emerge as an excellent tool for obtaining extensive knowledge on two-phase flows, particularly ice slurry flow and accurate pressure drop estimation in pipes. Some researchers developed numerical modelling approaches to simulate ice slurry flow in pipes [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of the Pressure Drop Characteristics of Isothermal Ice Slurry Flow under Variable Ice Particle Diameter

Akhtar

Cheema

Ali

et al. 2020

Journal of Chemistry

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Ice slurry is an advanced secondary refrigerant that has been attracting considerable attention for the past decade due to the growing concerns regarding energy shortage and environmental protection. To stimulate the potential applications of ice slurry, the corresponding pressure drop of this refrigerant must be comprehensively investigated. The flow of ice slurry is a complex phenomenon that is affected by various parameters, including flow velocity, ice particle size, and ice mass fraction. To predict the pressure drop of ice slurry flow in pipes, a mixture computational fluid dynamic model was adopted to simulate a two-phase flow without considering ice melting. The numerical calculations were performed on a wide range of six ice particle sizes (0.1, 0.3, 0.5, 0.75, 1, and 1.2 mm) and ice mass fraction ranging within 5%–20% in the laminar range of ice slurry flow. The numerical model was validated using experimental data. Results showed that the ice volumetric loading and flow velocity have a direct effect on pressure drop; it increases with the increase in volumetric concentration and flow velocity. The findings also confirmed that for constant ice mass fraction and flow velocity, the pressure drop is directly and inversely related to the particle and pipe diameters, respectively. Moreover, the rise in pressure drop is more significant for large ice particle diameter in comparison to smaller size ice particles at high values of ice concentration and flow velocity.

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Investigation on flow and heat transfer characteristics of ice slurry without additives in a plate heat exchanger

Cited by 43 publications

References 29 publications

Computational Intelligence Powered Performance Analysis on Phase Change Heat Storage Air Source Heat Pump System

Computational Intelligence Powered Performance Analysis on Phase Change Heat Storage Air Source Heat Pump System

Improving Shelf Life, Maintaining Quality, and Delaying Microbial Growth of Broccoli in Supply Chain Using Commercial Vacuum Cooling and Package Icing

Numerical Investigation of the Pressure Drop Characteristics of Isothermal Ice Slurry Flow under Variable Ice Particle Diameter

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