Steam enters a counterflow heat exchanger operating at steady state at 0.07 MPa with a specific enthalpy of 2431.6 kJ/kg and exits at the same pressure as saturated liquid. The steam mass flow rate is 1.5 kg/min. A separatestream of air with a mass flow rate of 100 kg/min entersat 308C and exits at 608C. The ideal gas model with cp 51.005 kJ/kg ? K can be assumed for air. Kinetic and potentialenergy effects are negligible. Determine (a) the quality ofthe entering steam and (b) the rate of heat transfer betweenthe heat exchanger and its surroundings, in kW.
10/20/16 Persuasive presentation o Convince your audience to do something, audience action must be clear o Credibility must be solid o Anticipate audience objections with questions (I know what you’re thinking..) o 7-9 minutes long o Need a reflection folder Formal introductions o Start next week o Practice! o 2-3 minutes long o Can use pictures on overhead projector Stylistic language devices o “I have a dream..” speech critique o Ted Talk What all great speeches have in common Ideas can change the world
