Homework Answers
please see that cyclic device
doesn't say that if this is refrigerator and heat engine , for a
specific system only the desired output changes.
Also see maximum cop formula means that system is for reversible system where irreversibility is 0 means that system is ideal and the system that inventor suggests is irreversibile in nature
If the maximum cop was less that cop of the inventor system becomes impossible as this would mean that system is more ideal that theoretical system but in reality no body can make a ideal system there will always be some irreversibility means system is more practical
But here system is possible as cop is less than maximum cop hence INVENTOR CLAIM IS VALID
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3. An inventor claims to have developed a cyclic device that produces 200 kW of heat....
3. An inventor claims to have developed a heat pump that supplies 100 kW of heat...
3. An inventor claims to have developed a heat pump that supplies 100 kW of heat to a room and maintain 25°C while extracting 80 kW of energy (power) from the outside air at 0°C. Is this claim true? Show your calculation. If you write yes/no without calculation, you will not get any credit (10 points)
(45 pes) An inventor claims to have developed a steady flow device that operates on an electrical power input of 250 kW, has one inlet and two outlets. A stream of ammonia e device at 100 kPa and 20P...
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The answer is NO but why? An inventor claims to have developed a heat engine that...
The answer is NO but
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question 2 EGN 3343-Thermodynamics t Dr. Boutsen a) An inventor claims to have developed a food...
question 2
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An inventor claims he has developed a heat engine that receives energy from a source and...
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Problem 2 (28%) An inventor has proposed to build a device to continuously create hot and...
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3. An inventor claims to have developed a heat pump that supplies 100 kW of heat to a room and maintain 25°C while extracting 80 kW of energy (power) from the outside air at 0°C. Is this claim true? Show your calculation. If you write yes/no without calculation, you will not get any credit (10 points)
(45 pes) An inventor claims to have developed a steady flow device that operates on an electrical power input of 250 kW, has one inlet and two outlets. A stream of ammonia e device at 100 kPa and 20PC at a rate of 1 kg/s. The two exiting streams ow rate, one is at 200 kPa, 20°C and the other is a saturated liquid at 10 aims that heat transfer occurs with an uniform surface temperature sume that kinetic and...
The answer is NO but
why?
An inventor claims to have developed a heat engine that receives 700 kJ of heat from a source at 500 K and produces 300 kJ of net work while rejecting the waste heat to a sink at 290 K. Is this a reasonable claim? Yes or No Yes No
question 2
EGN 3343-Thermodynamics t Dr. Boutsen a) An inventor claims to have developed a food freezer that keeps the freezer cor temperature of-3°C while the kitchen temperature is 20°C and also has a coet performance of 14. Is his claim valid? Explain (10 points b) A power oyele operates between a lake's surface water at a temperature of 30 water at a depth whose temperature is 285 K. At steady state the cycle develops output of 10 kW while...
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An inventor claims he has developed a heat engine that receives energy from a source and can completely transform this energy to work without any heat rejection. A. Inventors claim violates both Kelvin-Planck and First law of thermodynamics B. Inventors claim violates first law of thermodynamics C. The inventors claim violates kelvin-Planck statement D. Inventors claim violates Clausius statement
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