Abstract
Critical heat flux of butanol aqueous solution is a few times higher than that of pure water, and the size of generating bubbles is very small. So it is said that butanol aqueous solution is a useful liquid of boiling for the application in cooling devices. In the past, the authors employed the boiling system of horizontal heated wire. In the present experiment, the disc is employed and steady as well as transient tests of boiling is conducted to study boiling heat transfer of butanol aqueous solution. In the tests, saturated as well as subcooled boiling is performed by changing solution density. It is confirmed from the steady experiment that butanol aqueous solution is a usefe liquid of boiling. Some findings such as the appearance of two maximum heat fluxes in boiling curve is also described.
