Stress sensitivity means the influence of pressure difference produced by joint working of the matrix stress and the porous fluid pressure on the porous microstructure.

The influence of the working fluid pressure and the structure of ejecting nozzle on the outlet temperature, ejecting coefficient and heating efficiency of the ejecting-mixing heater were analyzed.

The experimental investigation on the low pressure spray characteristics of swirl pressure nozzle was carried out with the water as the working fluid of spray.