Abstract
Efficacy of utilizing nano-sized particles of CNT in improvement of performance of thermal system with purpose of ventilating a building has been demonstrated in this investigation. The paraffin with freezing point of 300.4 K was utilized within the sinusoidal duct and presence of air gaps helps the acceleration of process. Finite volume approach was utilized for simulating flow of air. The time step and number of elements have been optimized and outputs showed that selecting Δt = 3 s and 157,545 elements leads to lowest computing price. With augmenting Re and Tin and adding greater volume fraction of CNT, the freezing process has been expedited because of greater release of heat from paraffin. With elevate of power of blower, the freezing time declines around 33.12 %. Reducing Tin leads to reduction of discharging time around 29.29 %. Furthermore, adding nanoparticles makes speed of solidification to elevate around 5.12 %. The quickest freezing occurs when Re = 7e3, Tin = 285.15 K and ϕ = 0.035.
•Efficacy of nanoparticles in improvement of performance of was studied.•Adding nanoparticles makes speed of solidification to elevate around 5.12 %.•Reducing Tin leads to reduction of discharging time around 29.29 %.•With elevate of power of blower, the freezing time declines around 33.12 %.