FUNDAMENTALS OF THERMODYNAMICS
10th Edition
ISBN: 9781119634928
Author: Borgnakke
Publisher: WILEY
expand_more
expand_more
format_list_bulleted
Videos
Question
error_outline
This textbook solution is under construction.
Students have asked these similar questions
in a rankine cycle, steam enters the turbine at 2.5 mpa saturated vapor and condenser of 50 kpa, what is the thermal efficiency of the cycle
Н.W
A smaller power plant produces steam at 3 MPa, 600•C, in the boiler. It
keeps the condenser at 45 C by the transfer of 10MW out as heat transfer.
The first turbine section expands to 500 kPa, and then flow is reheated
followed by the expansion in the low-pressure turbine. Find the reheat
temperature so that the turbine output is saturated vapor. For this reheat, find
the total turbine power output and the boiler heat transfer.
[Answer. (Reheat temperature= 529°C , total turbine power output= 6487
kW, the boiler heat transfer= 16 475 kW)]
in a steam poer cycle the steam suppy is at 15 br and dry and saturated .the condenser pressure is 0.4 bar calculate the carnot and ranking efficiencies of the cycle .neglect pump work
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
- a steam 8.0 MPa and 485 degree Celsius enters the turbine and expand at condenser pressure of 0.006 mpa for cycle and 1kg of steam. determine heat added, work turbine, energy chargeable and i deal heat ratearrow_forwardBy adding a condenser to the steam plant in problem#1, the turbine back pressure was reduced to 0.2 bar. Find The condition of the exhaust moisture from the turbine The work ratio The specific steam consumption (Problem#1 In the open-circuit steam plant, boiler feed water at atmospheric pressure 1 bar and 35oC is pumped into an oil-fired boiler which produces dry-saturated steam at 10 bar. This steam enters a steam turbine and is expanded isentropic ally to atmospheric pressure and freely discharged into the atmosphere. )arrow_forwardi need the answer quicklyarrow_forward
- 5.) An ideal Reheat Cycle has a turbine inlet pressure of 10 MPa with steam temperature of 400C. The steam expands to 5 MPa then it is reheated to 400C. After expanding in the 2nd turbine, the steam enters the condenser at 7 kPa. Draw the TS diagram, find the cycle efficiency and steam rate.arrow_forward1. IN A REFRIGERATION SYSTEM USING R-22, ONE EVAPORATOR IS TO PROVIDE 220KW OF REFRIGERATION AT -25C AND ANOTHER EVAPORATOR TO PROVIDE 200KW AT 5C. THE SYSTEM USES TWO STAGE COMPRESSION WITH INTERCOOLING AND IS ARRANGED LIKE IN 4-3. THE CONDENSINGTEMPERATURE IS 35C. CALCULATE THE POWER REQUIRED BY THE COMPRESSORS. WHAT IS THE COP OF THE SYSTEM?arrow_forwardIn an ideal regenerative cycle, steam enters the turbine at 6 Mpa. 500 °C. Steam is extracted at 0.2 Mpa and 0.275 Mpa. Then leaves the condenser at 0.1 Mpa. Find the efficiency in % IF the mass recirculating inside the cycle is 3.63 kg/s.arrow_forward
- b. A refrigerating system using Freon-12 has an evaporator saturation temperature of - 25°C and a condenser saturation temperature of 35°C. The vapor is dry saturated at entry to the compressor and has a temperature of 65°C after compression to the condenser pressure. There is no undercooling of the liquid in the condenser. i. Calculate the input power required by the compressor per kW of refrigeration. ii. Calculate the COPRef of the refrigerating system. ii. Show the operating cycle of the refrigerating system on a T-s diagram.arrow_forwardThe low pressure turbine in a regenerative cycle receives 10 kg/s steam at 600kPa, 500 C. The turbine exhausts to a condenser operating at 10 kPa. The condenser co0ling water temperature is restricted to a maximum of 10 C increase, so what is the needed flow of cooling water? draw schematic and t-s diagramarrow_forwardSee photo belowarrow_forward
- Steam enters the turbine at 10 MN/m2and 450oC. The steam expanded in the turbine down to the condenser pressure of 20 kN/m2. The condensate leaving the condenser is pumped to the boiler pressure directly. The turbine has an isentropic efficiency of 89%, and the mass of steam generated in the boiler is 5 kg/s. Find: Cycle thermal efficiency. Plant power output.Neglect the pump work and draw the cycle on a T – s diagram. Hint: 1 MN/m2= 10 bararrow_forwardA refrigerator in a meat warehouse must keep a low temperature of -20°C and the outside temperature is 25°C. Ammonia is used as the refrigerant which must remove 10 kW from the cold space. Compute for the flow rate of the ammonia needed assuming a standard vapor compression refrigeration cycle with a condenser at 25°C. Find the enthalpy of the stream exiting the evaporator, condenser, and throttling (expansion) valve.arrow_forwardAt 10kPa pressure and dryness degree x=0.90, the steam coming out of the turbine goes to the pump with adiabatic efficiency of 0.85 after condensing in the condenser. The pump sends the condensed water to the steam boiler with a working pressure of 8MPa. a) Find the h.T values of the inlet points of the condenser, pump and boiler b) Since the flow rate of the condensed water is 9000 kg/h, find the load of the condenser c) Find the power of the pumparrow_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
The Refrigeration Cycle Explained - The Four Major Components; Author: HVAC Know It All;https://www.youtube.com/watch?v=zfciSvOZDUY;License: Standard YouTube License, CC-BY