FUND OF ENG THERMODYN(LLF)+WILEYPLUS
9th Edition
ISBN: 9781119391777
Author: MORAN
Publisher: WILEY
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Refrigerant 22 is the working fluid in a Carnot refrigeration cycle operating at steady state. The refrigerant enters the condenser
as saturated vapor at 36°C and exits as saturated liquid. The evaporator operates at -30°C. Determine, in kJ per kg of refrigerant
flowing, the work input to the compressor.
46.58
21.06
40.34
32.10
B
D
As shown below, a refrigeration cycle condenses a flow of ammonia from a saturated vapor at 4 barto a saturated liquid. The entering volumetric flow rate of the ammonia is 0.1 m3/s. The ammonia functions asthe cold reservoir for the refrigeration cycle, and the hot reservoir is at 25 ∘C. A faded specification sheet for therefrigeration cycle reads that the required power input is 35 kW.(a) Is this cycle possible? Why or why not?(b) If the cycle is impossible, how much work input is required to make the cycle
Refrigerant 134a is the working fluid in an ideal vapor
compression refrigeration cycle operating at steady state. Refrigerant enters the compressor at 1.4 bar, -12
°C, and the condenser pressure is 9 bar. Liquid exits the condenser at 32 °C. The mass flow rate of refrigerant
is 7 kg/min. Determine
a. the compressor power, in kW.
b. the refrigeration capacity, in tons.
c. the coefficient of performance.
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- The defrost cycle in a domestic refrigerator may be terminated by two methods: ___and___.arrow_forwardRefrigerant 22 is the working fluid in a Carnot refrigeration cycle operating at steady state. The refrigerant enters the condenser as saturated vapor at 36°C and exits as saturated liquid. The evaporator operates at -30°C. Determine, in kJ per kg of refrigerant flowing, the net work in the cycle. A 20.37 B 36.47 18.37 24.37arrow_forwardThermodynamics, Fill in the blank: 1) Which component of an air-source heat pump allows it to be used for both heating in the winter and cooling in the summer? 2) The coefficient of performance of a refrigeration cycle is the ratio of the (______________) effect to the net work input required to achieve that effect. 3) For a Carnot vapor refrigeration cycle, the refrigerant passing through the condenser undergoes a constant (_____________) process. 4) A gas refrigeration application is often used to cool the interior cabin of a(n) (_____________) 5) A property diagram commonly used in analyzing refrigeration systems in which the evaporating and condensing processes appear as horizontal lines is the (____________) diagram.arrow_forward
- Thermodynamics 1 Pls help me asaparrow_forwardRefrigerant 22 is the working fluid in a Carnot refrigeration cycle operating at steady state. The refrigerant enters the condenser as saturated vapor at 36°C and exits as saturated liquid. The evaporator operates at -30°C. Determine, in kJ per kg of refrigerant flowing, the heat transfer to the refrigerant passing through the evaporator. (A) 156.26 B 124.26 144.26 134.26arrow_forwardShow Attempt History Current Attempt in Progress An ideal vapor-compression refrigeration cycle operates at steady state with Refrigerant 134a as the working fluid. Saturated vapor enters the compressor at 1.25 bar, and saturated liquid exits the condenser at 5 bar. The mass flow rate of refrigerant is 8.5 kg/min. Step 1 Determine the compressor power, in kW. W₁ = C Your answer is correct. Step 2 3.97 Your answer is correct. kW MacBook Air Attempts: 1 of 3 used Dro Qu Drop Que True Que Drop Que Dropc Ques Fill in t Ques True/Fa Quest True/Fal Questi True/Fals Viewin Multisteparrow_forward
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