Figure 1: Pressure-viscosity behaviour of polymerized (NBO/T<1) and depolymerized (NBO/T=2) silicate melts. Figure 2: Correlations of ambient pressure K T0 and K T0 ′ of silicate liquids with NBO/T.

The trade-offs necessary to choose a fluid involve a consideration of application requirements such as health, safety, and environmental effects, and fluid properties such as viscosity, stability, ...