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Air is a cylindrical is compressed reversible and isothermallay from 95 kPa , 25°C to 290 kPa. The initial volume is 0.162m³. Determine the work input, heat transfer and the entropy Change of the air being compressed
An air-conditioning system operating on the reversed Carnot cycle is
required to transfer heat from a house at a rate of 750 kJ/min to
maintain its temperature at 24°C. If the outdoor air temperature is
35°C, determine the power required to operate this air-conditioning
system.
An inventor claims to have developed a heat engine that receives 700 kJ of heat from a source at 500 K and produces 300 I of net work. while rejecting the waste heat to a sink at 290 K. Is this reasonable claim?
Determine the COP of a heat pump that supplies energy to a house at a rate of 8000 kJ/h for each kW of electric power it draws. Also, determine the rate of energy absorption from the outdoor air.
An air conditioner removes heat steadily from a house at a rate of 750 kJ/min while drawing electric power at a rate of 6 kW. Determine (a) the COP of this air conditioner and (b) the rate of heat transfer to the outside air.
As team power plant receives heat from a furnace at a rate of 280 GJ/h. Heat losses to the surrounding air from the steam as it passes through the pipes and other components are estimated to be about 8 GJ/h. If the waste heat is transferred to the cooling water at a rate of 145 GJ/h, determine (a) whethupoometoutput and (b) the thermal efficiency of this power plant.
1. A 600 MW steam power plant, which is cooled by a river, has a thermal efficiency of 40 percent. Determine the rate of heat transfer to the river water. Will the actual heat transfer rate be higher or lower than this value? Why?
If the hydrometer is to be constructed with a cylindrical floating rod. Nine fiduciary marks are to be placed along the rod to indicate densities of 0.98 g/cm3, 1.00 g/cm3, 1.02 g/cm3, 1.04 g/cm3, . . . 1.14 g/cm3. The row of marks is to start 0.200 cm from the top end of the rod and end 1.80 cm from the top end. Determine: (2.2) The required length of the rod; (2.3) The average density? (2.4) Should the marks be equally spaced? Explain your answer.
1Which statement is NOT true regarding the sketch in SolidWorks?
a.Dimensional constraints and geometric constraints are common constraints in sketch.
b.The sketch is red if there is contradiction between constraints.
c.Both curved and planar surface can be a sketch plane for 2D entitles.
d.Base sketch is the first sketch used to form the base feature.
2Which feature must start with a 2D sketch?
a.Extrude
b.Mirror
c.Shell
d.Linear Pattern
3What is the number of instances to create 5 new copies of feature via Circular Pattern?
How does increasing the temperature of a component affects its noise power?
