Concept explainers
A liquefied natural gas (LNG) regasification facilityutilizes a vertical heat exchanger or vaporizer that consists of a shell with a single-pass tube bundle used toconvert the fuel to its vapor form for subsequent delivery through a land-based pipeline. Pressurized LNG isoff-loaded from an oceangoing tanker to the bottom ofthe vaporizer at
Want to see the full answer?
Check out a sample textbook solutionChapter 11 Solutions
Fundamentals of Heat and Mass Transfer
Additional Engineering Textbook Solutions
Introduction To Finite Element Analysis And Design
Fox and McDonald's Introduction to Fluid Mechanics
Fundamentals Of Thermodynamics
Engineering Mechanics: Statics
Degarmo's Materials And Processes In Manufacturing
Thinking Like an Engineer: An Active Learning Approach (3rd Edition)
- 3.) An ammonia compressor operates at evaporator pressure of 316.02 kPa and a condenser pressure of 1557 kPa. A twin-cylinder compressor with bore to stroke ratio of 0.85 is to used at 1200 rpm. The actual volumetric efficiency is 92% and compression and mechanical efficiency is 78% and 80% respectively. For a cooling capacity of 25 TR, (a) the sketch the p-h diagram labeling the evaporating and condensing temperature and pressures (b) define the all properties of ammonia taken from saturation table. Determine (c) the quantity of cooling water in the condenser in kg/min if the increase in temperature is 8°C, (d) the bore and stroke expressed in cm and (e) the size of the driving motor in hp. Given: h2 = h at 1557 kPa and s2 = s1 1695 kJ/kgarrow_forwardShow step by step x = 100 SN = 7arrow_forwardSN = 9 X = 20arrow_forward
- A process to liquify nitrogen gas (N2) from 300K, 200atm to 98.69K (saturation temperature) and 7atm is to be designed. The specific enthalpy of the saturated liquid and saturated vapor at 7atm are, Hl = 74.7 J/g and Hv = 239.2 J/g respectively. Consider combining a heat exchanger with the throttle valve. In particular, the gas cooled by throttling, but not liquefied, is used to cool the inlet gas before it enters the throttle valve. This is achieved in the arrangement with the unliqufied gas leaving the heat exchanger at 290K (stream5.) Stream 4 is still at Tsat and 7atm. Is it possible to achieve liquefaction? If so, what fraction of N2 gas is liquefied in this process? (Hint: try combining mass and energy balances on the overall process)arrow_forward1. A. Using the Steam Tables, determine the amount of cooling water needed by a condenser in kg/sec if wet steam comes into the condenser at P= 610.44mmHG vac and 99.47 % moisture, mass flow rate= 7200+ (X/SN) kg/hr. Cooling water enters the condenser at 12 deg C and leaves at 21 deg C. Answer: B. Draw the schematic diagram of the condenser and process in the PV and TS diagrams below. Cp H20 = 4.187 KJ/(kg-K): Schematic diagram of heat exchanger =condenser S 2. Use only the MD below to solve this Item; use it by plotting data and process to determine items being asked. Steam enters a turbine at 117.4308 atmgage and 932 deg. F, and expands isentropicaly to 177.17 inches of Hg. For 2 + (X/SN) kg/sec of steam, what is (a) the ideal work done (KI/sec) if AKE = 0 and actual exhaust enthalpy is 2700 KI/kg. a)Ans: (b)ne =_ (c)Determine: (e) Actual steam temp ideal steam moisture at exhaust. Ans: at the exhaust. Ans. g) change in entropy during the actual process. Ans 3000 2500 2000…arrow_forwardThermodynamic course questionarrow_forward
- 7arrow_forwardThe following properties for Freon-12 were obtained. At -22 °C h (superheat) = 353 KJ/kg ha = 343 KJ/kg %3D At 44 °C h (superheat) = 300 KJ/kg h (subcooled) = 228 KJ/kg h = 238 KJ/kg %3D %3D Vapor Compression Refrigeration system with Heat Exchanger uses Freon-12. Liquid refrigerant leaves the condenser at 44 °C. The evaporator Temperature is -22°C. The internal heat exchanger temperature is 30°C. Compute for the cooling effect in KJ/kg.arrow_forwardRequired information Problem 05.087- Heat exchanger The evaporator of a refrigeration cycle is basically a heat exchanger in which a refrigerant is evaporated by absorbing heat from a fluid. Refrigerant-22 enters an evaporator at 200 kPa with a quality of 22 percent and a flow rate of 2.65 m³/h. R-22 leaves the evaporator at the same pressure superheated by 5°C. The refrigerant is evaporated by absorbing heat from air whose flow rate is 0.745 kg/s. The properties of R-22 at the inlet and exit of the condenser are h₁ 220.2 kJ/kg, V₁ = 1.005 kJ/kg °C. 0.0253 m³/kg, and h₂ 398.0 kJ/kg. The specific heat of air is taken as Problem 05.087.a - Heat exchanger Determine the rate of heat absorbed from the air. The rate of heat absorbed from the air is KWarrow_forward
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY