Hydrothermal jet spallation drilling (HJSD) is a new drilling method suitable for drilling deep
wells in hard rock formations. The characteristics of HJSD are that the rock surface is …

Supercritical carbon dioxide (sCO 2) has recently been proposed as a promising alternative
to conventional fluids for thermal management because of its unique thermophysical …

Thermal spallation drilling is a contact-less means of borehole excavation that works by
exposing a rock surface to a high-temperature jet flame. In this study, we investigate crucial …

Geothermal energy has the potential to produce significant amounts of electricity. Hot dry
rock, stored abundant geothermal energy, is mainly made up of granite and hard to drill …

In this study, a CO 2 circulation loop system is constructed to investigate the heat transfer of
an impinging jet under various CO 2 states, including liquid, gaseous, and supercritical …

Confined round jet impingement cooling of a flat plate at constant heat flux with carbon
dioxide at supercritical pressures was investigated numerically. The pressure ranged from …

Two-phase jet impingement cooling with carbon dioxide at subcritical pressures of 6.5 and
7.0 MPa (near-critical pressure) on smooth surface was experimentally studied in this paper …

Thermal spallation drilling is an alternative technology expected to be suitable for
exploitation of geothermal energy in hard, polycrystalline rocks. The rock spallation …

Jet impingement cooling is widely used in many industrial applications due to its high heat
transfer capability and is an option for advanced high power density systems. Jet …

Thermal spallation drilling is an alternative technology expected to be suitable for the
development of oil and gas in hard rocks. In this paper, experiments on six types of rocks …