“…Local HTC in research by Esmaeilzadeh et al [98] is much lower than that of Almohammadi et al [85], although tests were carried out on the same test stand. Lower local HTC for study by Esmaeilzadeh et al [98] may be due to the fact that they refer to a greater dimensionless distance from the inlet, and it is known that local HTC decreases with increasing x/D [43,48,53,57,80,86,88,92,101,115,126,131,134,144]. Moreover, according to a study by Anoop et al [54], the smaller the diameter of the NPs, the higher the local HTC.…”