What type of refrigerant must leave the cylinder as a liquid to prevent the separation of the different components in refrigerant?
A) Azeotropic mixtures B) Comlb
C) Zeotropic mixtures D) All refrigerants
C
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1.5 kg of air is initially at 200 kPa and 30oC in an expandable container. The air is heated so that it expands following the relationship PV1.2 = constant. The container also holds a fan which adds a total of 50 kJ of work to the system during the process. The pressure at the end of the process is 100 kPa.
(a) Determine the final volume of the air, the final temperature, and the amount of heat transfer during the process. (b) Develop a computer model for this problem, and plot the final volume, final temperature, and the amount of heat transfer during the process for final pressures ranging between 50 kPa and 190 kPa. Given: Air; m = 1.5 kg; P1 = 200 kPa; T1 = 30oC = 303 K; Wrs = -50 kJ; P2 = 100 kPa; PV1.2 = constant. Assume: ?KE = ?PE = 0. Air is an ideal gas (R = 0.287 kJ/kg-K). What will be an ideal response?
How are clamp-on ammeters used?
What will be an ideal response?
Strategy implementation is concerned with
a. the content of the strategy. b. how the strategy is operationalized and executed. c. goal development. d. corporate strategy. e. functional strategy.
To keep vise chains from becoming stiff and unable to wrap around a pipe, apply _____
a. water b. oil c. solder d. rosin