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Consider an alcohol and a mercury thermometer that read exactly 0°C at the ice point and 100°C at the steam point.
Consider a methane-oxygen fuel cell in which the reaction at the anode is CH4 + 2H2O CO2 + 8e- + 8H+
Consider a refrigerator that consumes 320 W of electric power when it is running. If the refrigerator runs only one quarter of the time and the unit cost
Consider a room that is initially at the outdoor temperature of 20°C. The room contains a 100-W lightbulb, a 110-W TV set, a 200-W refrigerator
Consider a refrigerator that operates on the vapor compression refrigeration cycle with R-134a as the working fluid
Consider a refrigeration system using refrigerant- 134a as the working fluid. If this refrigerator is to operate in an environment at 30°C
Consider a steady-flow Carnot cycle with water as the working fluid executed under the saturation dome between the pressure limits of 8 MPa and 20 kPa.
Consider a solar-energy-powered ideal Rankine cycle that uses water as the working fluid. Saturated vapor leaves the solar collector at 350 F, and the condenser
Consider a small air pistol with a cylinder volume of 1 cm3 at 250 kPa, 27°C. The bullet acts as a piston initially held by a trigger
Consider a sealed can that is filled with refrigerant- 134a. The contents of the can are at the room temperature of 25°C
Consider a rubber plate that is in contact with nitrogen gas at 298 K and 250 kPa. Determine the molar and mass density of nitrogen in the rubber
Consider a cogeneration plant for which the utilization factor is 1. Is the irreversibility associated with this cycle necessarily zero?
Consider a double fluid manometer attached to an air pipeshown in Fig. If the specific gravity of one fluid is 13.55,determine the specific gravity of the fluid
Consider a cogeneration power plant modified with regeneration. Steam enters the turbine at 6 MPa and 450°C at a rate of 20 kg/s and expands to a pressure
Consider a fan located in a 3 ft = 3 ft square duct. Velocities at various points at the outlet are measured, and the average flow velocity is determined
Consider a converging nozzle with a low velocity at the inlet and sonic velocity at the exit plane. Now the nozzle exit diameter is reduced by half
Consider a converging nozzle with sonic velocity at the exit plane. Now the nozzle exit area is reduced while the nozzle inlet conditions are maintained
Consider a heat pump that operates on the reversed Carnot cycle with R-134a as the working fluid executed under the saturation dome between the pressure limits
Consider a glass of water in a room that is at 20°C and 60 percent relative humidity. If the water temperature is 15°C, determine the vapor pressure
Consider a heat pump that operates on the ideal vapor compression refrigeration cycle with R-134a as the working fluid between the pressure limits
Consider a gasoline engine for a car as an SSSF device where air and fuel enters at the surrounding conditions 77 F, 14.7 lbf/in 2 and leaves the engine
Consider 100 m3 of atmospheric air which is an air-water vapor mixture at 100 kPa, 15°C, and 40% relative humidity
How much liquid water will condense out? You should include all the units which are needed to solve the given problem.Your steps and calculation should be clear
Consider 100 m3 of atmospheric air at 100 kPa, 25°C, and 80% relative humidity. Assume this is brought into a basement room where it cools to 15°C
Conditioned air at 13°C and 90 percent relative humidity is to be mixed with outside air at 34°C and 40 percent relative humidity at 1 atm.