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Do Problem 6.197E using refrigerant R-134a instead of R-410a.
Problem 6.197E
Consider a Carnot-cycle heat pump with R-410a as the working fluid. Heat is rejected from the R-410a at 110 F, during which process the R-410a changes from saturated vapor to saturated liquid. The heat is transferred to the R-410a at 30 F.
a. Show the cycle on a T-s diagram.
b. Find the quality of the R-410a at the beginning and end of the isothermal heat addition process at 30 F.
c. Determine the COP for the cycle.
A permeability test was run on a compacted sample of dirty sandy gravel. The sample was 150 mm long and the diameter of the mold 150 mm. In 83 s the discharge under a constant head of 40 cm was to7 em3 The sample had a dry mass of 51(10 g and its ..
Also, calculate and plot the Mach number along the nozzle.
A 30ft thick clay layer with doudble drainage settles 3 inches, in a time period of 2 years. The clay has a coefficient of consolidation of .000791 in^2/sec. a) Calculate the ultimate primary consolidation settlement. b) how long will it take to sett..
What is the concentration of tracer in the reactor 1 h after tracer addition is terminated? The reactor had an initial concentration of tracer of 1.0 mg/L when tracer addition commenced.
Calculate the mass of the green house gas and ozone depleting substance CFC-11 (chemical Formula = CCl3F) in the atmosphere. Use units of GtC (giga tonnes carbon). Production of this substance is now banned and mixing ratios are slowly decreasing wit..
How much extra water does a 21.5 ft, 175-lb concrete canoe displace compared to an ultra-lightweight 38-lb Kevlar canoe of the same size carrying the same load?
Determine the min coefficient of static friction between tires and the road surface so that the 1.5Mg car does not slide as it travels at 80km/h on the curved road. Neglect the size of the car.
in an ore-mixing operation a bucket full of ore is suspended fromnbspa traveling crane which moves along a stationary
A 2000-lb wheel load is to be supported by aggregate over soil with a maximum bearing pressure of 1000 lb/sqft. What depth of aggregate is needed if the angle theta is 40 degrees?
A ball screw for a machine table drive is to be selected. The axial force to be transmitted by the screw is 600 lb. The table moves 24 in per cycle, and it is expected to cycle 10 fimes per hour for a design life of 10 years. Select an appropriate..
Determine the design load for strength and serviceability limit states (short-term and long term), for a steel beam in a residential building with the following data;
Check that the nominal shear strength measurements are normally distributed and verify that there are no outliers in the sample data.
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