Pumping steam immediately from the turbine exit to the boiler pressure eliminati

Question

Pumping steam immediately from the turbine exit to the boiler pressure eliminating the condenser in a power plant would significantly lower the pump work and is consistent with Kelvin-Planck Statement (a) True (b) False The Second Law efficiency of a heat engine with a thermal efficiency of 40% operating between 500 degree K and 1000 degree K is ___? ____ % The coefficient of Performance of a heat pump can be less than one. (a) True (b) False The area under the curve of a P-V and T-S diagram represents heat and work respectively of the process (a) True (b) False A heat pump extracts 1000 Btu (Q_1) from a heat source and the compressor puts in 1500 Btu (W_net). What is the maximum amount of heat (Q_) the heat pump can potentially add while being used to heat a room? _____ Btu

Explanation / Answer

ANSWER 1.

TRUE

RESON CONSERVATION OF ENERGY

ANSWER 2

20 PERCENT

CACULATE THE EFFICIENCY BY THE FORMULA (1-T2/T1) AND THEN MULTIPLY IT WITH THE THERMAL EFFICIENCY

ANAWER 3

FALSE

REASON :BECOZ WORK DONE BY THE HEAT PUMP IS ALWAYS LESS THAN THE HAET GIVEN TO IT.

ANSWER 4

FALSE

REASON:AREA UNDER THE CURVE OF PV DIAGRAM RERESENT WORK.

ANSWER 5 NO IDEA SORRY FOR THIS

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