R-134a enters an insulated diffuser at a velocity of 200 m/s at a pressure and temperature of 800 kPa and 60°C, respectively. The R-134a exits at 1.60 MPa and 85°C. Determine the exit velocity.
Given: R-134a: P1 = 800 kPa; T1 = 60°C; V1 = 200 m/s; P2 = 1,600 kPa; T2 = 85°C
Insulated, so assume, Q?=0
What will be an ideal response?
For a diffuser, assume steady –state, steady-flow single-inlet, single-outlet flow, and assume that W?=?pe=0
These assumptions result in the first law being (State 1 is inlet, State 2 is outlet)
Finding R-134a properties: h1 = 294.98 kJ/kg; h2 = 309.73 kJ/kg
You might also like to view...
Recently, salmonella outbreaks occurred due to the contamination of the processing of peanuts. Given this information, it is likely that:
A) The price of peanut products would rise and the quantity of peanut products produced would fall. B) The price of peanut products would fall and the quantity of peanut products produced would rise. C) The price of peanut products would rise and the quantity of peanut products produced would rise. D) The price of peanut products would fall and the quantity of peanut products produced would fall.
What are the two main disadvantages to running a car on vegetable oil?
What will be an ideal response?
I don’t do mornings. Which time management suggestion is most closely related to this
statement?
a. Don’t let adversity defeat you b. Use technology to assist you. c. Manage your own time. d. Distinguish between high- and low-payoff activities. e. Self-correct when you determine a time waste problem.
Why do many building codes restrict the use of unvented gas-fired space heaters?
A) They heat unevenly. B) They tend to be less efficient than vented space heaters. C) It is difficult to connect ductwork to them. D) They release all their combustion products into the space they are heating.