The hysteresis behavior of the boiling curve becomes less pronounced as the difference between the minimum and maximum (critical) heat fluxes becomes small. Calculate the ratio of the maximum to minimum boiling heat fluxes for water, ethanol, refrigerant R134a, and refrigerant R22.
Which fluid has the greatest potential for the most severe hysteresis effect?
For which fluid is the critical heat flux largest?
The boiling occurs at atmospheric pressure on a large, horizontal surface.

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?