Downstream pressure (psi).
The downstream pressure, P 2, was estimated as a function of time.
The pore pressure was determined by measuring the variation of the downstream pressure.
The results show for the ratio of downstream pressure to upstream pressure less than 0.8, the mass flow rate is constant and independent of the downstream pressure.
R744 flow depending upon upstream pressure, upstream superheating, downstream pressure, and short-tube geometries were examined.
Downstream pressure changes were measured after increasing and maintaining upstream pressure constant.
But downstream pressure did not increase until 3660 min in 0.4 wt% EDA-G solution.
In the undercompaction simulation experiments, the differential between upstream pressure and downstream pressure was respectively set according to the pressure coefficients of 1.2 and 1.4, making the downstream pressure higher than the upstream pressure.
The downstream pressure and velocity changed more rapidly than those upstream, while the pressure drop (Δp) changed considerably.
When the temperature was above the LCST value of SD-SEAL, the downstream pressure change was small.
The experimental results indicate that the mass flow rate is independent of the downstream pressure when the ratio of the downstream pressure to upstream pressure is less than 0.8.
