Abstract
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.
Highlights
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 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. e 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. e numerical model was validated using experimental data
To confirm the accuracy of the mixture computational fluid dynamics (CFD) model, the numerical results are compared with the experimental results obtained by Grozdek et al [21]. e validation is conducted under a wide range of flow velocities and ice mass fractions. e validation is conducted over laminar range of ice slurry flow Reynolds number (Re) ≤ 2190
Summary
Shehnaz Akhtar ,1 Taqi Ahmad Cheema ,2 Haider Ali ,3 Moon Kyu Kwak ,1 and Cheol Woo Park 1. Zhang and Shi [7] used the Eulerian–Eulerian model to investigate the isothermal ice slurry flow under various ice particle diameters (0.1 mm and 0.27 mm) They only considered the ice particle velocity and solid particle distribution and disregarded the particle-dependent pressure drop characteristics. They did not investigate the ice particle size-dependent flow characteristics of ice slurry in different pipe diameters. 2. Problem Description is study aims to investigate the pressure drop and flow characteristics of isothermal ice slurry flowing through horizontal pipes with diameters of 9 mm and 23 mm by using a mixture multiphase model. E effects of various parameters, including flow velocity, ice mass fraction, and ice particle diameter, on the pressure drop characteristics of the isothermal ice slurry were analysed using numerical calculations.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
