Engineering, 05.05.2021 23:10 dustinquiz255
Define the first and second laws of thermodynamics.
(b) With the aid of conceptual diagrams, distinguish between closed, opened and isolated
systems.
(c) Define the following thermodynamic terms:
(i) Equilibrium
(ii) Process
(iii) Reversibility
(iv) Cycle
(d) What are state properties and differentiate between the intensive and extensive
properties of a thermodynamic system
(e) Distinguish between paths and point functions and discuss the thermodynamics sign
convention for the energy interaction by heat and work​
Answers: 2
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Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false
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Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.
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How much power could a wind turbine produce if it had the following specifications? cp = 0.45 -d=1.2kg/m3 d=50m v 5m/s
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Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.
Answers: 2
Define the first and second laws of thermodynamics.
(b) With the aid of conceptual diagrams, disti...
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