Question: Steam initially at 20 MPa and 559°C is expanded to saturated vapor at 1.4 MPa. What is the change in entropy in J/g-K?

A gas is compressed inside a compressor's cylinder. When the piston is at its bottom dead center, the gas is initially at 10 psig, 65F, and 10.5 in3. After compression and when the piston is at top dead center, the gas is 180Fand occupies 1.5 in3. What would be the new pressure of the gas in psig?

If 3000 ft3 of air is crossing an evaporator coil and iscooled from 75F to 55F, what would be the volume of air, in ft3, exiting the evaporator coil?

The tip of a soldering iron consists of a 0.6-cm- diameter copper rod, 7.6 cm long. If the tip must be 204C, what are the required minimum temperature of the base and the heat flow, in watts, into the base? Assume that h=22.7W/m2KandTair=21C.

Lower room temperatures can be offset in winter by A. lowering the relative humidity. B. being very still. C. activity. D. raising the relative humidity.

The sensible heat that is added to a saturated vapor after all of the liquid has boiled away is referred to as _____.

In an absorption chiller, _______is used to create the difference in pressures.

If PCD=6000lb and PGD=1000lb (both compression), find P and Q.

2.34 Show that the temperature distribution in a sphere of radius . made of a homogeneous material in which energy is released at a uniform rate per unit volume , is

The evaporator will normally operate at a(n) _____F boiling temperature when the indoor temperature is 75Fwith a 50% humidity condition. A. 40 B. 50 c. 60 D. 70