Consider the steady-state flow in a combustion chamber where heat is added by burning fuel. neglect friction and consider that the thermodynamic properties of the combustion gases are the same as those of air. data: m1 = 0,4; p1 = 557kpa; t1 = 604k; t2 = 900k; a = 0,0185m²; find: a) mass flow rate; b) m2; c) the addition of heat per unit mass and the rate of heat exchange; d) express the rate of heat addition as a fraction of the maximum rate of heat addition

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false