Spray mist cooling heat transfer in glass tempering process

Computational study of the application of Al2O3 nanoparticles to forced convection of high-Reynolds swirling jets for engineering cooling processes

“…Thus, the lower the σ , the more uniform the cooling by forced convection. This is a relevant feature for the quality of certain cooling applications, such as tempering of glasses (Monnoyer & Lochegnies, 2008;Sozbir & Yao, 2017).…”

“…In heat transfer applications, impinging jets are a popular mechanism for cooling heated surfaces (Ortega-Casanova & Castillo-Sanchez, 2017) and frequent examples of their use are cooling electronic devices (Narumanchi et al, 2005), cooling in industrial machining processes (An et al, 2008), glass tempering (Sozbir & Yao, 2017;Yu et al, 2017), cooling of windshields of vehicles (Li et al, 2013) or when the temperature of irradiated targets must be reduced (Selvaraj et al, 2016), amongst many others. The complex nature of a turbulent impinging jet flow makes further work necessary to evaluate and predict the characteristics of heat transfer (Goldstein & Franchett, 1988;Shum-Kivan et al, 2014;Uddin et al, 2013).…”

Thermal strengthening of low‐expansion glasses and thin‐walled glass products by ultra‐fast heat extraction

“…Thus, thermal strengthening of thin glasses as well as of glasses with low α both require enhanced heat extraction rates. In the most straightforward way, this means to replace conventional air/gas‐cooling by alternative methods such as quenching in water mist, 18 oils or molten salts, 19 or by contact‐cooling with metal blocks. Each of those methods provides higher cooling rates, but also comes with a set of disadvantages such as burning of the oil, surface contamination or corrosion reactions, or decreased surface quality due to contact handling.…”