THERMODYNAMICS LLF W/ CONNECT ACCESS
9th Edition
ISBN: 9781264446889
Author: CENGEL
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 13.3, Problem 83P
Is it possible for an adiabatic liquid-vapor separator to separate wet steam at 100 psia and 90 percent quality, so that the pressure of the outlet streams is greater than 100 psia?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Indonesia
Inggris
A single effect evaporator was used to concentrate 8000 kg / hr of tomato juice from 5% total solids to 30% total solids. The juice enters the evaporator at 25 ° C. The evaporator is operated on Steam (85% quality) at 143.27 kPa. The vacuum in the evaporator allows the juice to boil at 75 ° C. The specific heat of the dilute material is 4.1 kJ / (kg ° C) and the concentrate product is 3.1 kJ / (kg ° C). Count it (a) The rate of demand for steam? b. Steam economy if condensate temperature is released at 75 ° C.?
Additional Instructions: Define each enthalpy obtained from tables and chart and draw the p-h
diagram labeling the respective evaporating and condensing pressures and
temperatures in each problem.
(2) A standard vapor compression system produces 20 tons
of refrigeration using R-12 as a refrigerant while operating
between a condenser temperature of 41.6 C and an evaporator
temperature of -25°C. Determine (a) the refrigerating effect in
kJ/kg, (b) the circulating rate in kg/s, (c) the power supplied,
(d) the COP, (e) the heat rejected in kW, and (f the volume flow
rate in L/s.
Ans. (a) 100.26 kJ/kg, (b) 0.7022 kg/s, (c) 25.69 kW,
(d) 2.74, (e) 96.09 kW, (f) 92.18 L/s
Consider the vapor-compression refrigeration cycle shown below
with tetrafluoroethane as the refrigerant. If the evaporation
temperature is -12°C, determine the coefficients of
performance for condensation temperatures of 16°C, 28°C, and
40°C. Use the table containing the properties of saturated 1,1,1,2-
tetrafluoroethane (R134A) and the PH diagram for
tetrafluoroethane (HFC-134a).
T
S
Vapor-compression refrigeration cycle.
4
Throttle
valve
Condenser
Compressor
Evaporator
Assume isentropic compression of the vapor.
The coefficient of performance for a condensation temperature of 16°C is
The coefficient of performance for a condensation temperature of 28°C is
3
The coefficient of performance for a condensation temperature of 40°C is
2
Chapter 13 Solutions
THERMODYNAMICS LLF W/ CONNECT ACCESS
Ch. 13.3 - What are mass and mole fractions?Ch. 13.3 - Consider a mixture of several gases of identical...Ch. 13.3 - The sum of the mole fractions for an ideal-gas...Ch. 13.3 - Somebody claims that the mass and mole fractions...Ch. 13.3 - Consider a mixture of two gases. Can the apparent...Ch. 13.3 - What is the apparent molar mass for a gas mixture?...Ch. 13.3 - Prob. 7PCh. 13.3 - The composition of moist air is given on a molar...Ch. 13.3 - Prob. 9PCh. 13.3 - Prob. 10P
Ch. 13.3 - A gas mixture consists of 20 percent O2, 30...Ch. 13.3 - Prob. 12PCh. 13.3 - Prob. 13PCh. 13.3 - Consider a mixture of two gases A and B. Show that...Ch. 13.3 - Is a mixture of ideal gases also an ideal gas?...Ch. 13.3 - Express Daltons law of additive pressures. Does...Ch. 13.3 - Express Amagats law of additive volumes. Does this...Ch. 13.3 - Prob. 18PCh. 13.3 - How is the P-v-T behavior of a component in an...Ch. 13.3 - Prob. 20PCh. 13.3 - Prob. 21PCh. 13.3 - Prob. 22PCh. 13.3 - Consider a rigid tank that contains a mixture of...Ch. 13.3 - Prob. 24PCh. 13.3 - Is this statement correct? The temperature of an...Ch. 13.3 - Is this statement correct? The volume of an...Ch. 13.3 - Is this statement correct? The pressure of an...Ch. 13.3 - A gas mixture at 300 K and 200 kPa consists of 1...Ch. 13.3 - Prob. 29PCh. 13.3 - Separation units often use membranes, absorbers,...Ch. 13.3 - Prob. 31PCh. 13.3 - The mass fractions of a mixture of gases are 15...Ch. 13.3 - The volumetric analysis of a mixture of gases is...Ch. 13.3 - An engineer has proposed mixing extra oxygen with...Ch. 13.3 - A rigid tank contains 0.5 kmol of Ar and 2 kmol of...Ch. 13.3 - A mixture of gases consists of 0.9 kg of oxygen,...Ch. 13.3 - Prob. 37PCh. 13.3 - One pound-mass of a gas whose density is 0.001...Ch. 13.3 - A 30 percent (by mass) ethane and 70 percent...Ch. 13.3 - Prob. 40PCh. 13.3 - Prob. 41PCh. 13.3 - A rigid tank that contains 2 kg of N2 at 25C and...Ch. 13.3 - Prob. 43PCh. 13.3 - Prob. 44PCh. 13.3 - Prob. 45PCh. 13.3 - Is the total internal energy of an ideal-gas...Ch. 13.3 - Prob. 47PCh. 13.3 - Prob. 48PCh. 13.3 - Prob. 49PCh. 13.3 - Prob. 50PCh. 13.3 - The volumetric analysis of a mixture of gases is...Ch. 13.3 - A mixture of nitrogen and carbon dioxide has a...Ch. 13.3 - The mass fractions of a mixture of gases are 15...Ch. 13.3 - A mixture of gases consists of 0.1 kg of oxygen, 1...Ch. 13.3 - An insulated tank that contains 1 kg of O2at 15C...Ch. 13.3 - An insulated rigid tank is divided into two...Ch. 13.3 - Prob. 59PCh. 13.3 - A mixture of 65 percent N2 and 35 percent CO2...Ch. 13.3 - Prob. 62PCh. 13.3 - Prob. 63PCh. 13.3 - Prob. 66PCh. 13.3 - Prob. 67PCh. 13.3 - Prob. 68PCh. 13.3 - Prob. 69PCh. 13.3 - The gas passing through the turbine of a simple...Ch. 13.3 - Prob. 71PCh. 13.3 - A pistoncylinder device contains 6 kg of H2 and 21...Ch. 13.3 - Prob. 73PCh. 13.3 - Prob. 74PCh. 13.3 - Prob. 75PCh. 13.3 - Prob. 76PCh. 13.3 - Prob. 77PCh. 13.3 - Prob. 78PCh. 13.3 - Prob. 79PCh. 13.3 - Prob. 81PCh. 13.3 - Fresh water is obtained from seawater at a rate of...Ch. 13.3 - Is it possible for an adiabatic liquid-vapor...Ch. 13.3 - Prob. 84PCh. 13.3 - Prob. 85RPCh. 13.3 - The products of combustion of a hydrocarbon fuel...Ch. 13.3 - A mixture of gases is assembled by first filling...Ch. 13.3 - Prob. 90RPCh. 13.3 - Prob. 91RPCh. 13.3 - Prob. 92RPCh. 13.3 - A rigid tank contains a mixture of 4 kg of He and...Ch. 13.3 - A spring-loaded pistoncylinder device contains a...Ch. 13.3 - Prob. 95RPCh. 13.3 - Reconsider Prob. 1395. Calculate the total work...Ch. 13.3 - Prob. 97RPCh. 13.3 - Prob. 100RPCh. 13.3 - Prob. 101RPCh. 13.3 - Prob. 102FEPCh. 13.3 - An ideal-gas mixture whose apparent molar mass is...Ch. 13.3 - An ideal-gas mixture consists of 2 kmol of N2and 4...Ch. 13.3 - Prob. 105FEPCh. 13.3 - Prob. 106FEPCh. 13.3 - An ideal-gas mixture consists of 3 kg of Ar and 6...Ch. 13.3 - Prob. 108FEPCh. 13.3 - Prob. 109FEPCh. 13.3 - Prob. 110FEPCh. 13.3 - Prob. 111FEP
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Steam is expanded in the high pressure turbine from 4000kPa, 360°C to 1000kPa with an isentropic efficiency of 80%. The steam is then reheated isobarically to 360°C after which it passes through the low pressure turbine expanding down to 4kPa with an isentropic efficiency of 75%. If the condensate has a temperature of 24°C, calculate: (a). the condition of the steam entering the reheater (b). the condition of the steam entering the condenser (c). the total power output for a mass flow-rate of 10tonnes of steam per hour (d). the specific steam consumption in kg steam/kWh (e). the Rankine efficiency of the plant including the feed pump workarrow_forwardA two-stage ammonia food-freezing plant – with a desired capacity of 528,000 kJ/h at -40℃ evaporating temperature and 35C condensing temperature – has a flash intercooling system with a liquid sub cooler. The vapour leaving the evaporator is at -30℃ and entering the first stage compressor is at -15℃. The vapour leaving the flash chamber is superheated by 10℃ in the suction line to the second stage compressor. Water intercooling is done to cool the vapour to 45℃. Adiabatic efficiencies of both compressors are 0.65 and 0.77 respectively. Find the piston displacements, discharge temperatures and power requirements of the two compressors.arrow_forwardاريد حل كتابة يدarrow_forward
- اريد حل كتابة يدarrow_forwardPlease show full working in stepsarrow_forwardRice at 35% moisture is to be dried to produce 500 lb/hr with 5% moisture. The air at 85 C and 30% RH is a mixture of outside air at 77 F and recirculated air coming from the drier is reheated to 113 C before entering the dryer and leaves at 100 C and 60 % RH. The steam that is used to reheat the air enters and leaves the reheater saturated at 75 psi. Determine: (a) the amount of feed in lb/hr. (b) the amount of air in lb/hr. (c) the amount of steam needed to reheat the air in lb/hr.arrow_forward
- Steam is delivered to turbine at 5.4 MPa and 600 degree C. Before condensation at 31 degree C, steam is extracted for feed water heating at 0.6 MPa. The turbine exhaust is 60 degree C. the required values of some state point properties are tabulated below. 7. Determine the quality of steam at the condenser inlet.arrow_forwardA 2 kg/sec of steam is delivered to the turbine at 5 MPa and 600 degree celsius. Before condensation at 30 degree celsius, steam is extracted for feed water heating in the Closed feedwater heater with drain pump forward at 0.65 MPa. Determine the following: (a) mass flowrate of extracted steam in kg/sec, (b) Heat added in kJ/min (c) Heat rejected in kJ/min, (d) Ideal turbine work, (e) Pump work in KW, and (f) thermale efficiencyarrow_forwardAn ammonia system with a 158-kW evaporator operating at -1°C and a 35-kW evaporator operatingat -40°C uses flash gas removal and intercooling. The condensing temperature is 32°C. Thearrangement is as shown. How many kilograms per minute of ammonia are compressed by the high-pressure compressor?arrow_forward
- The condensing and evaporating pressures in a 10 TR R-22 refrigeration system are 11.82 bar and 1.64 bar, respectively. The refrigerant enters the compressor at dry and saturated state and leaves the condenser subcooled by 10°C. The actual COP is 70% of its theoretical value. Determine the condenser temperature in °C. Determine the evaporator temperature in °C. Determine the subcooling temperature in °C. Approximating the operating temperatures to the nearest whole number, determine the heat rejected in kJ/kg. Approximating the operating temperatures to the nearest whole number, determine the mass flowrate of the refrigerant in the system. Approximating the operating temperatures to the nearest whole number, determine the power requirement of the system. Approximating the operating temperatures to the nearest whole number, determine the theoretical COP of the system. Approximating the operating temperatures to the nearest whole number, determine the Actual COP of the system.arrow_forwardWhat is the enthalpy of refrigerant 134a with s = 0.94190 at 0.85MPa? (Superheated Vapor)arrow_forwardAnswer all questions.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Refrigeration and Air Conditioning Technology (Mi...Mechanical EngineeringISBN:9781305578296Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill JohnsonPublisher:Cengage Learning
Refrigeration and Air Conditioning Technology (Mi...
Mechanical Engineering
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:Cengage Learning
Heat Transfer [Conduction, Convection, and Radiation]; Author: Mike Sammartano;https://www.youtube.com/watch?v=kNZi12OV9Xc;License: Standard youtube license