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Do Problem 9.21 with ammonia as the working fluid.
Problem 9.21
A supply of geothermal hot water is used as the energy source in an ideal Rankine cycle with R-134a, as shown in Fig. P9.21. Saturated vapor R-134a leaves the boiler at a temperature of 85?C, and the condenser temperature is 40?C.
Calculate the thermal efficiency of this cycle.
A new athletics stadium with a curved concrete roof is beingdesigned. Each of the end walls is 25 metres long. Its height ymetres is given by
Describe the reasons for enhancing drainage and situation where it is required. Explain some of the detrimental effects of drainage. Describe the types of drainage system indicating suitability criteria. 200- 250 word limit
A dam has a parabolic shape z/zo = (x/xo)2, with xo = 10 ft and zo = 24 ft. The fluid is water, gamma = 62.4 lbf/ft3, and atmospheric pressure may be omitted.
A wastewater treatment plant uses an activated sludge process for secondary treatment of 0.300 cubic meters / second of primary effluent. The mixed liquor has a concentration of 2,100mg VSS/L, and the RAS concentration is 10,000mg VSS/L.
What is the phenomenon of the change of specimen height during static loading called? What is the phenomenon of the change of specimen height during unloading called?
determine the range of values of p
A body slides down a frictionless plane and during the third second after starting from rest if it travels 20.4m. What is the angle of inclination of the plane?
Is the sonic velocity in a specified medium a fixed quantity,
you measure the average headway and average spacing of passing vehicles as 3.2 seconds and 165 ft, repsectively. calculate the flow, average speed, and density of the traffic stream in this lane.
Problem 1: Determine the internal forces at point J for the structure shown, where member BD can only carry axial forces. Take the dimension a = 160mm and the external load P = 450N
A W18x130 section is used as a column with one end pinned and the other end is fixed against rotation but free to translate. The length is 12 ft. determine the strength of the A992 steel column.
Using a safety factor of 2.00 and neglecting the pile dead weight, find the length of a 1' diameter circular concrete pile required to take a design load of 50 kips in a soil composed of two layers.
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