Steam enters an adiabatic turbine at 8 MPa and 5008C with a mass flow rate of 3 kg/s and leaves at 30 kPa. The isentropic efficiency of the turbine is 0.90. Neglecting the kinetic energy change of the steam, determine (a) the temperature at the turbine exit and (b) the power output of the turbine.
Answers
(a) The temperature at the turbine exit is approximately 224.8°C.
(b) The power output of the turbine is approximately 6.5 MW.
What are the temperature and power output of the turbine?To determine the temperature at the turbine exit, we can use the concept of isentropic efficiency. Since the turbine is adiabatic (no heat transfer) and the kinetic energy change is neglected, we can assume an isentropic process.
From the given conditions and using the isentropic relations for entropy and temperature, we can calculate the exit temperature.
For the power output of the turbine, we can use the mass flow rate and the change in enthalpy of the steam. By applying the first law of thermodynamics, which states that the change in enthalpy is equal to the heat transfer minus the work done, we can solve for the power output.
The isentropic efficiency of a turbine represents its ability to convert the energy of the working fluid (steam in this case) into useful work. A higher efficiency indicates a more effective conversion of energy.
Turbines play a crucial role in various applications, including power generation and mechanical drive systems. Understanding their performance characteristics and optimizing their design helps improve energy efficiency and overall system performance.
Factors such as steam properties, pressure ratios, and efficiency affect the power output and temperature changes in turbines.
Learn more about temperature
brainly.com/question/12085369
#SPJ11
Related Questions
h darcy derived an equation for the friction loss in pipe flow in which f is a dimensionless coefficient that depends on
Answers
The friction loss in pipe flow is a measure of the energy dissipation in the fluid due to internal viscous forces and frictional forces against the walls of the pipe.
To quantify this, Darcy proposed an equation in which f is a dimensionless coefficient that depends on the pipe roughness (ε), Reynolds number (Re), and diameter of the pipe:f = (2 log10(D/ε)/3.7 + 2.51/Re^0.5)^-2This equation is known as the Darcy-Weisbach equation and is widely used in engineering applications for the calculation of pressure drop in pipe flow.
The friction factor (f) in this equation is used to relate the pressure drop to the flow rate, fluid density, and pipe dimensions. The friction factor is typically obtained from empirical correlations or from the use of Moody's diagram. In general, the friction factor is higher for rougher pipes, lower Reynolds numbers, and smaller pipe diameters. The Darcy-Weisbach equation is an important tool for designing and analyzing fluid transport systems, and is used in a wide range of applications including water supply systems, oil and gas pipelines, and HVAC systems.
To know more about friction visit:
https://brainly.in/question/32923337
#SPJ11
g a liquid-propellant combustion chamber is 1 m long and 0.3 m in diameter. the temperature and pressure in the chamber are uniform at approximately 2,100 k and 15 mpa, and the diameter reynolds number of the flow through the chamber is of the order of 107 . the chamber wall is type 301 stainless steel 2.5 mm thick and is maintained at 110 k on the outside surface. radiation is one-third the total heat flux. what would be the steady-state inner surface temperature? use the following data:
Answers
The steady-state inner surface temperature can be calculated using provided data and equations.
What is the steady-state inner surface temperature?The given paragraph provides information about a liquid-propellant combustion chamber and its operating conditions.
The chamber is made up of type 301 stainless steel, and its dimensions are 1 m in length and 0.3 m in diameter.
The temperature and pressure inside the chamber are approximately 2,100 K and 15 MPa, respectively, with a diameter Reynolds number of 107. The wall of the chamber is 2.5 mm thick, and its outer surface is maintained at 110 K.
Radiation contributes one-third of the total heat flux. The problem requires calculating the steady-state inner surface temperature of the chamber.
Learn more about steady-state
brainly.com/question/31431308
#SPJ11
A horizontal poly crystalline solar panel module has to be investigated by natural cooling. For crystal silicon, the thermal coefficient approximately 0.0045/K is used. Investigate the effect of air velocity on the cooling performance of PV panels at 0-5 m/s air velocities, 25-40 ºC ambient temperatures, and 400-1000 W/ m2 solar radiation
Answers
Solution :
It is given that :
Thermal coefficient = 0.0045/K
Ambient temperature, \($T_a = 25 - 40^\circ$\)
air velocity, v = 0-5 m/s
Solar radiation, \($G= 400-100 \ W/m^2$\)
\($P=50 \ W$\)
Model calculations :
Cell temperature (\($T_c$\))
\($T_c = T_a + \left(\frac{0.25}{5.7+3.8 \ v_w}\right) G$\)
where \($ v_w - v_a = $\) wind speed / air speed
∴ \($T_c = 2 \pi + \left(\frac{0.25}{5.7+3.8 \times 1}\right) \times 400$\)
\($T_c = 35.526 ^\circ$\)
\($\Delta T = T_c -25$\)
= 35.526 - 25
= 10.526 K
Thermal coefficient = 0.0045 x 10.526
= 0.04737
Pv power = \($(1 -C_T) \times P \times \frac{G}{1000}$\)
\($=(1 -0.04737) \times 50 \times \frac{400}{1000}$\)
= 17.0526 W
explain the distinction between a real address and a virtual address?
Answers
Virtual addresses refer to the virtual store viewed by the process.
might be different, in which case virtual addresses must be mapped into physical addresses.
When your workplace obtains new materials, you should add them to the chemical list:
Answers
Answer:
immediately
Explanation:
Calculate the value of ni for gallium arsenide (GaAs) at T = 300 K. The constant B = 3. 56 times 1014 9cm -3 K-3/2) and the bandgap voltage Eg = 1. 42 eV.
Answers
This question is incomplete, the complete question is;
Calculate the value of ni for gallium arsenide (GaAs) at T = 300 K.
The constant B = 3.56×10¹⁴ (cm⁻³ K^-3/2) and the bandgap voltage E = 1.42eV.
Answer: the value of ni for gallium arsenide (GaAs) is 2.1837 × 10⁶ cm⁻³
Explanation:
Given that;
T = 300k
B = 3.56×10¹⁴ (cm⁻³ K^-3/2)
Eg = 1.42 eV
we know that, the value of Boltzmann constant k = 8.617×10⁻⁵ eV/K
so to find the ni for gallium arsenide;
ni = B×T^(3/2) e^ ( -Eg/2kT)
we substitute
ni = (3.56×10¹⁴)(300^3/2) e^ ( -1.42 / (2× 8.617×10⁻⁵ 300))
ni = (3.56×10¹⁴)(5196.1524)e^-27.4651
ni = (3.56×10¹⁴)(5196.1524)(1.1805×10⁻¹²)
ni = 2.1837 × 10⁶ cm⁻³
Therefore the value of ni for gallium arsenide (GaAs) is 2.1837 × 10⁶ cm⁻³
the following creep data were taken on an aluminum alloy at 400c (750f) and a constant stress of 25 mpa (3660 psi). plot the data as strain versus time, then determine the steady-state or minimum creep rate. note: the initial and instantaneous strain is not included.
Answers
To plot the data as strain versus time, you'll need to have the creep data for different time intervals. Since you haven't provided the data, I'll explain the process using general steps:
1. Gather the creep data for different time intervals at 400°C and a stress of 25 MPa.2. Create a table with two columns: one for time (in minutes or hours) and the other for strain.3. Plot the data points on a graph with time on the x-axis and strain on the y-axis. Connect the data points with a line.4. Identify the steady-state or minimum creep rate. This is the rate at which the strain changes over time once it reaches a constant value.
To know more about strain versus visit:
brainly.com/question/32006951
#SPJ11
What is the impact on fuel economy when using E85 instead of gasoline?
Answers
Answer:
energy security ethanol
A 6-in-diameter pipe is being used to convey 600 lb of water per minute. Assuming that the water has a density of 62.4 Lbm/ft, determine the velocity of the water.
Answers
The velocity of the water flowing through the 6-inch diameter pipe is approximately 204.1 ft/s.
What is velocity?Velocity is the pace and direction of an object's movement, whereas speed is the time rate at which an object is travelling along a path. In other words, velocity is a vector, whereas speed is a scalar value.
The directional speed of an item in motion, as measured by a specific unit of time and observed from a certain point of reference, is what is referred to as velocity.
To determine the velocity of the water flowing through the 6-inch diameter pipe, we can use the following formula:
Q = A * V
Where Q is the flow rate (600 lb/min), A is the cross-sectional area of the pipe, and V is the velocity of the water.
The cross-sectional area of the pipe is:
A = π * \(r^2\)
A = π * \((0.25 ft)^2\)
A = 0.049 \(ft^2\)
Now we can solve for the velocity:
V = Q / A
V = 600 lb/min / 0.049\(ft^2\)
V = 12245.9 ft/min
Finally, we can convert the velocity to feet per second (ft/s) by dividing by 60:
V = 12245.9 ft/min / 60
V ≈ 204.1 ft/s
Therefore, the velocity of the water flowing through the 6-inch diameter pipe is approximately 204.1 ft/s.
For more details regarding velocity, visit:
https://brainly.com/question/17127206
#SPJ9
Some full-time 4WD sedans use a front engine and transaxle, with a drive shaft connected to drive the rear wheels.
Select one:
True
O False
Answers
Answer:true
Explanation:
Discuss why TVET Institutions need advice of the business community in order
to provide good programmes.
Answers
Answer:
Without the indispensable advice of the business community, TVET Institutions will be unable to cover the gap in career knowledge required by the business community. To develop workers who possess the knowledge and skills required by today's business entities, there is always the continual need for the educational institutions (gown) to regularly meet the business community (town). This meeting provides the necessary ground for the institutions to develop programs that groom the workforce with skills that are needed in the current workplace. Educational institutions that do not seek this important advice from the business community risk developing workers with outdated skills.
Explanation:
TVET Institutions mean Technical and Vocational Education and Training Institutions. They play an important role in equipping young people to enter the world of work. They also continue to develop programs that will improve the employability of workers throughout their careers. They regularly respond to the changing labor market needs, adopt new training strategies and technologies, and expand the outreach of their training to current workers while grooming the young people for work.
PLEASE ANSWER SOON
In a science lab, Cash mixes two clear liquids together in a beaker. Bubbles are produced, and a white solid forms and settles to the bottom. Which statement below describes what happened?
a
A physical change occurred, a gas and precipitate was produced
b
A physical change occurred, only a gas was produced
c
A chemical change occurred, only a gas was produced
d
A chemical change occurred, a gas and precipitate was produced
Answers
Answer:
I think it is D
Explanation:
I did a couple mins of research on this topic but there is no clear line that separates a physical and chemical reaction, so do with that as you will. i hope I somewhat helped.
what will happen to the yield strength, the tensile strength, and the ductility of a material if you increase the strain rate?
Answers
The thing that will happen to the Yield strength, the Tensile Strength, and the ductility. of a material if you increase the strain rate is option B: The Yield Strength and the Tensile Strength will increase, but the the ductility will decrease.
What connection exists between ductility and yield strength?Boosting the strain rate or decreasing the temperature has the effect of raising the flow stress and decreasing ductility. The less uniform elongation before necking begins is what causes the poorer ductility; however, significant plastic flow may still be seen within the necked region.
Note that the primary distinction between yield strength and tensile strength is that the former refers to the lowest stress at which a material would permanently deform, whilst the latter refers to the highest tension at which a material will withstand before failing.
Learn more about Tensile Strength from
https://brainly.com/question/27983434
#SPJ1
See full question below
What will happen to the Yield strength, the Tensile Strength, and the ductility. of a material if you increase the strain rate? * The Yield Strength, the Tensile Strength, and the ductility (\%EL) will all increase. The Yield Strength and the Tensile Strength will increase, but the the ductility (\%EL) will decrease. The Yield Strength will increase, but the Tensile Strength and the the Ductility
(%EL)
will decrease. The Yield Strength will decrease, but the Tensile Strength and the the Ductility (\%EL) will increase. The Yield Strength and the Tensile Strength will decrease, but the the Ductility (\%EL) will increase. The Yield Strength, the Tensile Strength, and the ductility (\%EL) will all decrease.
why do kitchen cabinets bathtubs and attic openings require special framing details
Answers
Diseña un mecanismo multiplicador con un engranaje motriz cuya relación de transmisión sea de 0.5 y que transmita el movimiento entre ejes distantes. Inserta una captura de pantalla indicando la relación entre los diámetros y la velocidad de giro del engranaje motriz.
Answers
Importance of linear algebra and trigonometry in Geomatic engineering
Answers
Answer:
Explanation:
Linear algebra and trigonometry are important mathematical tools used in geometric engineering.
Linear algebra is important in geometric engineering because it provides a powerful tool for analyzing and solving systems of linear equations, which are frequently used to describe geometric relationships and transformations. For example, linear algebra is used to study the properties of lines and planes, to describe the transformations that occur when an object is translated, rotated, or scaled, and to model the deformation of objects under load.
Trigonometry, on the other hand, is important in geometric engineering because it provides a way to describe and understand the relationships between lengths and angles. This is particularly important in surveying and mapping, where angles and distances must be accurately measured and analyzed to produce accurate maps and models of the earth's surface. Trigonometry is also used to calculate the lengths and angles of triangles, which are basic building blocks for many geometric objects and figures.
In summary, linear algebra and trigonometry are essential tools in geometric engineering because they provide a way to describe and analyze the geometric relationships and transformations that are central to the field.
Consider this example of a recurrence relation. A police officer needs to patrol a gated community. He would like to enter the gate, cruise all the streets exactly once, and then leave by the same gate. What information would you need to determine a Euler circuit and a Hamilton circuit
Answers
Answer:
the police officer cruise each streets precisely once and he enters and exit with the same gate.
Explanation:
NB: kindly check below for the attached picture.
The term ''Euler circuit'' can simply be defined as the graph that shows the edge of K once in a finite way by starting and putting a stop to it at the same vertex.
The term "Hamiltonian Circuit" is also known as the Hamiltonian cycle which is all about a one time visit to the vertex.
Here in this question, the door is the vertex and the road is the edge.
The information needed to detemine a Euler circuit and a Hamilton circuit is;
"the police officer cruise each streets precisely once and he enters and exit with the same gate."
Check attachment for each type of circuit and the differences.
the police officer cruise each streets precisely once and he enters and exit with the same gate.
Which procedure would help to predict flaws in fabric used to make sails for ships?
Answers
Answer: Sails are made from a wide variety of fabrics, from natural fibers, such as flax, hemp, and cotton in various forms of sails canvas to synthetic fibers such as polyester, nylon, aramids, laminate and carbon fibers.
Explanation:
List two Turkey-based ERP software and describe their main features.
Answers
When it comes to Turkey-based ERP software, there are a variety of solutions available. Some of the most popular ERP software options available in Turkey are:
1. Logo Tiger:
Logo Tiger is an ERP software solution developed by Logo Software, which is based in Turkey. The software includes a range of features and tools, including accounting, inventory management, customer management, and more. Some of the main features of Logo Tiger include:
Inventory Management: Allows you to manage inventory and track stock levels, including real-time updates and alerts when inventory levels are low.
CRM: The software includes customer relationship management tools, which allow you to track customer information, monitor customer interactions, and provide personalized customer service.
Accounting: Logo Tiger includes a range of accounting features, such as financial reporting, general ledger, and accounts payable/receivable.
2. Netsis ERP:
Netsis ERP is another Turkey-based ERP software solution that is widely used by businesses of all sizes. The software includes a variety of features, including financial management, inventory management, and customer relationship management. Some of the key features of Netsis ERP include:
Financial Management: The software includes a range of financial management tools, such as general ledger, accounts payable/receivable, and financial reporting.
Inventory Management: Netsis ERP includes advanced inventory management tools, such as real-time tracking and alerts, purchase order management, and more.
CRM: The software includes customer relationship management tools that allow you to manage customer interactions, monitor customer data, and provide personalized customer service.
In conclusion, these two Turkey-based ERP software are Logo Tiger and Netsis ERP. Logo Tiger provides inventory management, CRM, and accounting, while Netsis ERP provides financial management, inventory management, and CRM as well.
To know more about software visit:
https://brainly.com/question/32393976
#SPJ11
What is a variable in computer programming?
Answers
A variable is a value in programming that is subject to change based on external factors or data that has been passed into the program.
What is computer program?A program is an organized set of instructions for a computer to follow. A program contains a one-at-a-time series of instructions that the computer follows in the modern computer that John von Neumann described in 1945.Computer programs include MS Word, MS Excel, Adobe Photoshop, Internet Explorer, Chrome, and others.Functional Programming Language. Programming language for scripts. programming language for logic. Object-Oriented Programming Language software, instructions that direct a computer. The total collection of scripts, procedures, and procedures used to run a computer system is referred to as software. The phrase was created to distinguish these instructions from hardware, or the actual parts of a computer system. A program is an organized set of instructions for a computer to follow.To learn more about computer program refer to:
https://brainly.com/question/23275071
#SPJ4
Assume n is the length of the array. Find the initial condition and recurrence equation that expresses the execution time for the worst case of this algorithm and then solve that recurrence.
Answers
The recurrence equation is T(n) = 2*T(n/2) + f(n)
What is initial condition and recurrence equation?To answer this question, we need to consider an algorithm that operates on an array of length n. Let T(n) represent the execution time for the worst case of this algorithm.
The initial condition for T(n) is T(1), which represents the execution time for the worst case when the array has only one element.
To determine the recurrence equation for T(n), we need to analyze the algorithm's behavior for larger values of n. Let's assume that the algorithm divides the array into two roughly equal halves at each step, and each half is then processed recursively. This leads to a recurrence equation of:
T(n) = 2*T(n/2) + f(n)
where f(n) represents the time required to process the array of length n, excluding the recursive calls. This equation says that the execution time for an array of length n is twice the execution time for an array of length n/2, plus some additional time f(n).
To solve this recurrence equation, we can use the master theorem, which gives us:
T(n) = O(n*log(n))
This means that the execution time for the worst case of this algorithm grows at most as quickly as n*log(n), where n is the length of the array.
Learn more about recurrence equation
brainly.com/question/6707055
#SPJ11
technician a says that the dot code identifies the manufacturer and country where the tire was made. technician b says that the dot code provides the week and year the tire was made. who is correct?
Answers
The indirect tire-pressure monitoring system is being discussed between two technicians. A technician claims that certain automakers have employed it.
According to technician B, in order to identify a low tyre, the rotating speeds of the rf and lr tyres are compared. The fact that BOTH technicians are accurate should not be overlooked. Indirect tyre pressure monitoring systems are those that do not use air pressure sensors inside the tyres (TPMS). Instead, they analyse relative wheel revolutions using the ABS wheel speed sensors to detect a low tyre. If the driver calibrates the system while any tyre is underinflated, the system will not report properly. The driver can calibrate the system by pressing a reset button on the dashboard or through the electronic controller.
Learn more about Tyres here:
https://brainly.com/question/28871929
#SPJ4
If chestnut hair (E) is dominant over black hair (e), can two horses with black hair produce an offspring with chestnut hair? Explain your answer.
Answers
Answer:
No, the offspring of two black horses cannot have chestnut hair. Since the black hair allele is recessive, both parents have to be hz recessive and do not carry the dominant chestnut hair allele. The only allele the parents can pass back to their offspring is the black allele.
Explanation:
Edg. 2022
Answer: The offspring of two black horses cannot have chestnut hair. Since the black hair allele is recessive, both parents have to be his recessive and do not carry the dominant chestnut hair allele. The only allele the parents can pass back to their offspring is the black allele.
Explanation:
at steady state, a refrigeration cycle operating between hot and cold reservoirs at 300 k and 235 k, respectively, removes energy by heat transfer from the cold reservoir at a rate of 100 kw. a) if the cycle's coefficient of performance is 4, determine the power input required, in kw. b) determine the minimum theoretical power required, in kw, for any such cycle.
Answers
The power input required is Wcycle of 150KW and the minimum theoretical power required is Wcycle=54.55KW.
Given data:
Hot reservoir Temp Th=300 K
Cold reservoir Temp Tc=275 K
Heat transfer at cold reservoir Qc=600KW
To find out
a) Coefficient of performance \beta actual=4 (Cycle power in KW)
b) The minimum theoretical power required Wcycle in KW
Assumption: Constant average values are used.
a) Actual cycle formula
Wcycle=Qc÷\beta actual
=600/4
=150KW
b) maximum cycle coefficient formula
B_{max}=Tc÷(Th-Tc )
=275÷(300-275 )
=11
For minimal theoretical power required
\beta actual=B_{max}=11
Actual cycle coefficient of performance can be determined by
\beta actual=Qc÷Wcycle
Wcycle=Qc÷\beta actual
=600/11
=54.55KW
Visit here to learn more about the theoretical power: https://brainly.com/question/14465000
#SPJ4
What kind of plan or development of road can be done to avoid traffic?
Answers
Answer: Breakdown Lanes
Reason: With breakdown lanes when a car needs to stop it can go to the backdown lane and fix its issue.
Following data refers to the years of service (variable x) put in by seven
specialized workers in a factory and their monthly incomes (variable y). x
variable values with corresponding y variable values can be listed as: 11 years of
service with income 700, 7 years of service with income 500, 9 years of service
with income 300, 5 years of service with income 200, 8 years of service with
income 600, 6 years of service with income 400, 10 years of service with
income 800. Regression equation y on-x is
Select one:
ay=3/4x+1
by=4/3x-1
y=3/4x-1
dy-1-3/4x
Answers
Based on the data given, the regression equation y on-x is y = 3/4x + 1.
The regression equation that represents the relationship between the years of service (x) and monthly incomes (y) for the specialized workers in the factory can be determined by analyzing the given data points. By examining the data, we can observe that the monthly income increases as the years of service increase. Calculating the regression equation using the given data, we find that the equation that best fits the relationship is:y = (3/4)x + 100
This equation indicates that for every increase of 1 year in service, the monthly income increases by 3/4 (0.75) units. The constant term of 100 represents the base income level. Therefore, the correct option from the given choices is ay = (3/4)x + 1.For more such questions on Regression:
https://brainly.com/question/14230694
#SPJ8
When comparing the results from your second run of materialized view query_a with those obtained from query_b, you noticed: a. Both returned the same value. b. query_a returned a higher value than query_b. c. query_b returned a higher value than query_a. d. Results from both query_a AND query_b were stored on disk.
Answers
When comparing the results from the second run of materialized view query_a with those obtained from query_b, there are a few possible scenarios that could have occurred. The correct option for this question is (a) both returned the same value.
If both query_a and query_b returned the same value, then this suggests that the queries are equivalent and produce the same output. This could be due to the fact that query_a and query_b are performing the same calculation or are querying the same data.
If query_a returned a higher value than query_b, then this could indicate that query_a is more complex or is including additional data that query_b is not considering. It could also suggest that there may be a discrepancy in the data being queried or in the way the queries are being executed.
Alternatively, if query_b returned a higher value than query_a, this could imply that query_b is more comprehensive or is considering additional data that query_a is not taking into account. This could also point to a difference in the way the queries are being executed or in the data being queried.
Lastly, if the results from both query_a and query_b were stored on disk, this indicates that the materialized view has been created and cached for later use, potentially improving query performance and reducing the amount of data processing needed for future queries.
To know more about query_a visit:
https://brainly.com/question/32064486
#SPJ11
What does efficiency measure?
Answers
Answer:
Efficiency is defined as any performance that uses the fewest number of inputs to produce the greatest number of outputs. Simply put, you're efficient if you get more out of less.
Explanation:
The safety engineer uses a logging and monitoring system to track ____ from a project's start to its finish.
a. standards
b. objectives
c. hazards d. deliverables
Answers
Answer:
c. hazards
Explanation:
The safety engineer uses a logging and monitoring system to track hazards from a project's start to its finish.
(352-60) An equipment grounding conductor is not required in the conduit if the grounded (neutral) conductor is used to ground equipment as permitted in Section 250-142.(True/False)
Answers
True. According to Section 250-142, if the grounded (neutral) conductor is used to ground equipment, an equipment grounding conductor is not required in the conduit.
Your question pertains to whether or not an equipment grounding conductor is required in the conduit when the grounded (neutral) conductor is used to ground equipment as permitted in Section 250-142. The answer is: False. According to the National Electrical Code (NEC), an equipment grounding conductor is still required in most cases to provide a proper ground path for fault currents.
Learn more about grounded here
https://brainly.in/question/13891468
#SPJ11