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A cooling tower is used to reject 1,000,000 Btu/hr from the condenser of a refrigeration system. Determine the water and air flow rates necessary to maintain a condenser leaving temperature of 100 F as the ambient temperature varies between 60 and 100 F at a relative humidity of 50 %. The tower approach is 10 F and the air outlet state is 90 F and saturated. Draw some conclusions from your analysis
A shell and tube heat exchanger with one shell pass and four tube passes is being analyzed to determine the heat transfer rate and the fluid outlet temperatures for prescribed flow rates and inlet temperatures. The cold fluid has a heat capacity rate..
an airplane is flying at v0130 mph and with a constant time rate of increase of speed v22fts2 when it starts to climb
a. The primary consolidation settlement of the clay layer caused by the addition of the permanent load Dss9pd b. The time required for 80% of primary consolidation settlement under the additional permanent load only
atmospheric air at 90o f and 60 relative humidity flows over a cooling coil at an inlet volumetric flow rate of 2000
develop a one-dimensional transient numerical solution for a plane wall of a nuclear containment vessel. the external
Sketch typical thermal curves and discuss the information that might be obtained and problems that might be anticipated.
Refrigerant-134a at 1 MPa and 100°C is throttled to a pressure of 0.8 MPa. Determine the reversible work and exergy destroyed during this throttling process. Assume the surroundings to be at 30°C.
to make ice at 1 atm 101.3kpa water at 25 degrees c is cooled to 0 degrees c and then frozen to ice 0 degrees c by
an air conditioning system is used to maintain a house at 70f when the temperature outside is 90f. if the air
complete the following exercises. in each case locate the state on sketches of the t-v and p-v diagrams. four kg of
briefly explain a why there may be significant scatter in the fracture strength for some given ceramic material and b
A vertical piston- cylinder assembly contains 0.6 kg of air (K=1.4, R= 287J/Kg.K) initially at 110 KPa and 27 C (state 1). The air is first compressed isentropic ally to a temperature of 117 C ( state 2) which is followed by a constant pressure expan..
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