Ejercicio uno procesos
•
0 likes•155 views
This document provides 5 examples of computational conduction heat transfer problems. The problems involve calculating temperature distributions and heat transfer rates using finite difference methods for 1D, 2D, and 3D conduction scenarios. Materials include iron rods, carbon steel fins, squares, rectangles, and plates with various boundary conditions like prescribed surface temperatures and convection. Grid spacings and node locations are specified to numerically solve the conduction equations.
Report
Share
Report
Share
Download to read offline
Recommended
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 03 Assignment
Chemical Engineering CH EN 3453 Heat Transfer
from University of Utah, 2014 Fall
Homework HW 03 Assignment
Answers to Problem Set
The document discusses optimizing the thickness of insulation on a horizontal 1" steel pipe carrying steam at 180°C. It provides conditions such as a thermal conductivity of 0.06 W/mK for the insulation material and a cost of $200x per meter of pipe length, where x is the thickness in meters. The optimal thickness is needed to minimize total annual cost over a 10 year period with a 15% time value of money.
5 Chea Group3
The document discusses three chemical engineering problems involving heat exchanger design and optimization. Problem 3 involves determining the optimum insulation thickness for a steam pipe. Problem 9 involves determining the cooling water flow rate and exit temperature for a condenser. Problem 15 involves determining the optimum exit temperature of cooling water and length of tubes for an air cooler.
Heat and Mass Transfer Assignment
This document contains a 20-part assignment on heat and mass transfer. It includes problems related to conduction, convection, and fins. Some key topics covered are steady-state and transient heat conduction, boundary layer formation, heat transfer coefficients, and calculations involving cylindrical and spherical geometry. Students are asked to calculate heat transfer rates, temperature distributions, boundary layer thicknesses, fin efficiencies, and more for a variety of conductive and convective heat transfer scenarios.
2hhtththth
The document contains multiple engineering problems related to heat transfer through walls, pipes, and other objects. It provides details like material properties, temperatures, dimensions, and heat transfer coefficients to calculate things like temperature distributions, heat transfer rates, insulation thicknesses, and timescales for heating or cooling. The problems cover a wide range of applications from insulating steam pipes to heating metal spheres to reentry of a satellite through the atmosphere.
Expansion
The document discusses the expansion of solids, liquids, and gases when heated. It explains that heating causes the particles in matter to move faster and spread farther apart, increasing the distance between particles and causing the substance to expand. Several examples are given of how expansion is used in daily life, such as in train tracks, bridges, and bimetallic strips in thermostats. Formulas for calculating linear expansion are provided.
Hw.1
1. The document contains homework problems about heat transfer involving concepts like conduction, convection, and radiation. It includes problems calculating heat transfer rates through materials like glass and aluminum plates, as well as determining surface temperatures and heat transfer coefficients.
2. The problems provide information on conditions like material properties, geometries, temperatures, heat fluxes, and heat transfer rates to calculate unknown values using equations of heat transfer.
3. Drawings or diagrams are required to be made for each problem to illustrate the systems, and assumptions must be stated.
Problem Set 1
The document contains several optimization problems related to heat transfer and insulation. Problem 5 asks to determine the optimum thickness of insulation for a steam pipe given parameters like steam temperature, insulation conductivity and cost. Problem 11 asks to determine the cooling water flow rate and exit temperature to optimize condensing 2000 kg/h of vapor. Problem 17 asks to determine the optimum exit temperature and tube length for an air cooler given parameters like air flow rate, heat transfer coefficients, water cost and cooler cost.
Recommended
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 03 Assignment
Chemical Engineering CH EN 3453 Heat Transfer
from University of Utah, 2014 Fall
Homework HW 03 Assignment
Answers to Problem Set
The document discusses optimizing the thickness of insulation on a horizontal 1" steel pipe carrying steam at 180°C. It provides conditions such as a thermal conductivity of 0.06 W/mK for the insulation material and a cost of $200x per meter of pipe length, where x is the thickness in meters. The optimal thickness is needed to minimize total annual cost over a 10 year period with a 15% time value of money.
5 Chea Group3
The document discusses three chemical engineering problems involving heat exchanger design and optimization. Problem 3 involves determining the optimum insulation thickness for a steam pipe. Problem 9 involves determining the cooling water flow rate and exit temperature for a condenser. Problem 15 involves determining the optimum exit temperature of cooling water and length of tubes for an air cooler.
Heat and Mass Transfer Assignment
This document contains a 20-part assignment on heat and mass transfer. It includes problems related to conduction, convection, and fins. Some key topics covered are steady-state and transient heat conduction, boundary layer formation, heat transfer coefficients, and calculations involving cylindrical and spherical geometry. Students are asked to calculate heat transfer rates, temperature distributions, boundary layer thicknesses, fin efficiencies, and more for a variety of conductive and convective heat transfer scenarios.
2hhtththth
The document contains multiple engineering problems related to heat transfer through walls, pipes, and other objects. It provides details like material properties, temperatures, dimensions, and heat transfer coefficients to calculate things like temperature distributions, heat transfer rates, insulation thicknesses, and timescales for heating or cooling. The problems cover a wide range of applications from insulating steam pipes to heating metal spheres to reentry of a satellite through the atmosphere.
Expansion
The document discusses the expansion of solids, liquids, and gases when heated. It explains that heating causes the particles in matter to move faster and spread farther apart, increasing the distance between particles and causing the substance to expand. Several examples are given of how expansion is used in daily life, such as in train tracks, bridges, and bimetallic strips in thermostats. Formulas for calculating linear expansion are provided.
Hw.1
1. The document contains homework problems about heat transfer involving concepts like conduction, convection, and radiation. It includes problems calculating heat transfer rates through materials like glass and aluminum plates, as well as determining surface temperatures and heat transfer coefficients.
2. The problems provide information on conditions like material properties, geometries, temperatures, heat fluxes, and heat transfer rates to calculate unknown values using equations of heat transfer.
3. Drawings or diagrams are required to be made for each problem to illustrate the systems, and assumptions must be stated.
Problem Set 1
The document contains several optimization problems related to heat transfer and insulation. Problem 5 asks to determine the optimum thickness of insulation for a steam pipe given parameters like steam temperature, insulation conductivity and cost. Problem 11 asks to determine the cooling water flow rate and exit temperature to optimize condensing 2000 kg/h of vapor. Problem 17 asks to determine the optimum exit temperature and tube length for an air cooler given parameters like air flow rate, heat transfer coefficients, water cost and cooler cost.
Thermalexpansion
Thermal expansion describes how the size of materials changes with increasing temperature. There are three main types of thermal expansion:
1. Linear expansion is the increase in length per unit length for each degree rise in temperature.
2. Area expansion can be calculated from linear expansion.
3. Volume expansion also relates to linear expansion, with volume expansion being three times the linear expansion rate.
Water is an anomaly as it contracts in volume from 0 to 4 degrees C before expanding normally at higher temperatures.
Assgnmt 1
1. This document provides 7 heat transfer problems as an assignment due on Friday, September 14, 2018 at 1700 hrs. It includes problems involving heat loss through single and double pane windows, heat flow through a refrigerator door, heat loss from insulated pipes, determining the minimum thickness of a composite window for an oven, measuring the thermal conductivity of an unknown metal, determining interfacial temperatures between insulation layers on a pipe, and calculating heat transfer rate through a solid block with a central hole.
4B group 4
The document provides information about the heat loss calculation of a furnace with inner dimensions of 1m x 1.2m x 0.75m and wall thickness of 11 cm made of refractory material. The inner and outer surface temperatures are 200°C and 38°C respectively. The total heat loss by conduction in 24 hours is calculated to be 801.65 MJ.
4a Group4
The document describes a problem calculating the heat loss from a furnace with inner dimensions of 1m x 1.2m x 0.75m and 11cm thick refractory walls. It provides the inner and outer surface temperatures and conductivity and calculates the total heat loss as 881798399.8 J over 24 hours by conduction through the walls. A second problem calculates the heat loss from a duct with ceramic and insulation layers given temperatures, thicknesses, and conductivities. It uses an iterative process to calculate the interface temperature and heat loss.
Askeland phulenotes ch21printable propiedades termicas de los
This chapter discusses the thermal properties of materials including heat capacity, thermal expansion, thermal conductivity, and thermal shock. It outlines that these properties will be examined including heat capacity and specific heat in section 21.1, thermal expansion in section 21.2, thermal conductivity in section 21.3, and thermal shock in section 21.4. Examples are provided to demonstrate calculations of specific heat, thermal expansion coefficients, maximum allowable temperature changes without cracking, and thermal conductivity in designing windows.
group 3 4A
The document contains two problems related to heat transfer through walls and insulation. The first problem involves calculating the thickness of insulation required around a furnace wall to limit heat loss to 1830 W/m^2, given the wall and insulation material properties. The second problem involves calculating the time required for the center of a large aluminum slab to reach a temperature of 388.8 K, given its initial temperature and properties, when exposed to a cooler environment.
CORROSION REPORT(refined)
A biomass power heat exchanger corroded severely after only 6 years of operation. An investigation was conducted to understand why and develop a solution. It was found that condensation forming on the outside of the pipes from the temperature gradient between the hot flue gases and cooler air inside the pipes was the primary cause of corrosion, especially in the first meter. To address this, the report proposes installing a concentric aluminum pipe to pre-heat the inlet air with steam and reduce the temperature gradient, which should significantly decrease condensation and corrosion of a new heat exchanger.
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 02 Assignment
Chemical Engineering CH EN 3453 Heat Transfer
from University of Utah, 2014 Fall
Homework HW 02 Assignment
Critical thickness of insulation
It is basic information about what is critical thickness and why we should we know this. Then there is critical thickness formula for cylindrical pipe and spherical shell.
6 resistance thermometry
This document summarizes key principles of resistance thermometry. It discusses how resistance thermometers work by using a sensor whose resistance varies with temperature. Platinum resistance thermometers are commonly used and provide absolute temperature measurements. The document describes the construction of platinum resistance thermometer sensors using platinum wire wound around mica and sealed in protective tubes. It also discusses other sensor materials like nickel and copper, as well as thermistors which use semiconducting materials with a negative coefficient of resistivity.
Energy - q=mCT - equation
The set of energy Problems to practice understanding use of q=mCT equation.
Variables and [units]: q - Heat [J]; m - Mass [g]; C - Specific Heat Capacity [J/g*oC or J/g*K]; delta T - change in temperature [oC or K]
Mid semester qp
1. This document appears to be a midterm exam for a heat transfer course taken by mechanical engineering students with a specialization in chemical process engineering.
2. The exam is divided into two parts - Part A contains 10 short answer questions worth 2 marks each on topics related to heat transfer concepts. Part B contains 4 long answer numerical problems worth 10 marks each.
3. The long answer problems involve calculating the time taken for a raindrop to reduce in diameter due to evaporative cooling, determining the heat loss and coolant requirements for an aircraft wing, sizing a resistance heater to heat water in a pipe, and designing a condenser by calculating tube length and heat transfer coefficient.
4cheagroup3
The document contains two physics problems involving heat transfer calculations. The first problem involves calculating the required thickness of insulation needed to limit heat loss from a furnace wall to 1830 W/m^2, given the wall thickness, material properties, and inner and outer surface temperatures. The second problem involves calculating the time required for the temperature at a depth of 25.4 mm to reach 388.8 K in a large aluminum slab initially at 505.4 K that is suddenly exposed to an environment at 338.8 K.
4a group4 edited
The document describes a problem calculating the heat loss from a furnace with inner dimensions of 1m x 1.2m x 0.75m and 11cm thick refractory walls. It provides the inner and outer surface temperatures and conductivity and calculates the total heat loss as 881798399.8 J over 24 hours by conduction through the walls. A second problem calculates the heat loss from a duct with ceramic and insulation layers given temperatures, thicknesses, and conductivities. It uses an iterative process to calculate the interface temperature and heat loss.
X10709 (me8693)
This document contains details regarding an examination for a heat and mass transfer course, including:
1) The exam has 3 parts consisting of short answer, long answer, and case study questions worth 20, 65, and 15 marks respectively.
2) Sample questions assess topics like fin analysis, boundary layers, heat exchanger design, phase change processes, and radiation heat transfer.
3) One long answer question involves calculating temperatures in a multi-layer wall and determining the heat loss, while another evaluates melting of an iceberg towed through water.
Tutorial.pptx
The document contains 10 problems related to heat transfer and thermodynamics. The problems involve calculating temperatures, time required to reach a temperature, temperature distributions, and deriving governing equations for heat transfer. Lumped system analysis, transient and steady-state heat conduction, convection, and thermal resistances are concepts used.
Tutorial#2.pptx
1. The temperature of a thermocouple junction will reach 99% of the initial temperature difference in a gas stream within a certain time, using lumped system analysis and given properties of the junction and convection heat transfer coefficient.
2. The time required for the temperature of a steel sphere coated with a dielectric material and initially at 500°C to reach 140°C when suddenly quenched in an oil bath at 100°C can be estimated, neglecting energy storage in the small dielectric coating.
3. The transient temperature at the midpoint of a stainless steel electrical iron base being heated on one surface can be derived and calculated, given properties, heating power, convection conditions, and time.
tutorial#3 Solution.pptx
This document contains multiple heat transfer problems involving pipes, fins, and composite walls. The first problem involves calculating the overall heat transfer coefficient and dominant resistance for a steel pipe with water flowing inside at 500 W/m2K and the outside exposed to 12 W/m2K. The second problem involves calculating the maximum possible heat generation rate for electric heater wires in a solid wall to keep the temperature below 300°C with boundary conditions of 50 W/m2K and 75 W/m2K. The third problem involves determining the increase in heat transfer from adding fins to steam tubes in a heating system.
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 07 Assignment
Chemical Engineering CH EN 3453 Heat Transfer
from University of Utah, 2014 Fall
Homework HW 07 Assignment
2 dimentional steady state conduction.pdf
This summary provides the key details from the multi-part document in 3 sentences or less:
Part 1 describes a system of hot and cold water pipes buried underground, providing dimensions and material properties to estimate heat transfer between the pipes.
Part 2 evaluates the feasibility of transporting steam through an underground pipe from a power plant to a building complex 0.2 miles away, considering pipe dimensions, steam conditions, and soil properties.
Parts 3-5 present additional conduction heat transfer problems involving buried tanks, extruded shapes, and pipes in soil, providing geometry, material properties, and boundary conditions to calculate heat transfer rates and temperature distributions using analytical solutions.
Assignment#1.pptx
1. The document provides 10 problems related to one-dimensional steady-state heat conduction. The problems involve determining temperature distributions, heat fluxes, heat transfer rates, and thermal resistances for various geometries including walls, pipes, spheres, and cylinders. The materials include aluminum, stainless steel, and other unspecified solids. Boundary conditions include specified temperatures, insulation, convection, and heat generation.
Heat transfer experiment for chemical engineering student
This Pdf contain all the experiment of heat transfer lab.You can get many things which is needed for write an experiment.
More Related Content
What's hot
Thermalexpansion
Thermal expansion describes how the size of materials changes with increasing temperature. There are three main types of thermal expansion:
1. Linear expansion is the increase in length per unit length for each degree rise in temperature.
2. Area expansion can be calculated from linear expansion.
3. Volume expansion also relates to linear expansion, with volume expansion being three times the linear expansion rate.
Water is an anomaly as it contracts in volume from 0 to 4 degrees C before expanding normally at higher temperatures.
Assgnmt 1
1. This document provides 7 heat transfer problems as an assignment due on Friday, September 14, 2018 at 1700 hrs. It includes problems involving heat loss through single and double pane windows, heat flow through a refrigerator door, heat loss from insulated pipes, determining the minimum thickness of a composite window for an oven, measuring the thermal conductivity of an unknown metal, determining interfacial temperatures between insulation layers on a pipe, and calculating heat transfer rate through a solid block with a central hole.
4B group 4
The document provides information about the heat loss calculation of a furnace with inner dimensions of 1m x 1.2m x 0.75m and wall thickness of 11 cm made of refractory material. The inner and outer surface temperatures are 200°C and 38°C respectively. The total heat loss by conduction in 24 hours is calculated to be 801.65 MJ.
4a Group4
The document describes a problem calculating the heat loss from a furnace with inner dimensions of 1m x 1.2m x 0.75m and 11cm thick refractory walls. It provides the inner and outer surface temperatures and conductivity and calculates the total heat loss as 881798399.8 J over 24 hours by conduction through the walls. A second problem calculates the heat loss from a duct with ceramic and insulation layers given temperatures, thicknesses, and conductivities. It uses an iterative process to calculate the interface temperature and heat loss.
Askeland phulenotes ch21printable propiedades termicas de los
This chapter discusses the thermal properties of materials including heat capacity, thermal expansion, thermal conductivity, and thermal shock. It outlines that these properties will be examined including heat capacity and specific heat in section 21.1, thermal expansion in section 21.2, thermal conductivity in section 21.3, and thermal shock in section 21.4. Examples are provided to demonstrate calculations of specific heat, thermal expansion coefficients, maximum allowable temperature changes without cracking, and thermal conductivity in designing windows.
group 3 4A
The document contains two problems related to heat transfer through walls and insulation. The first problem involves calculating the thickness of insulation required around a furnace wall to limit heat loss to 1830 W/m^2, given the wall and insulation material properties. The second problem involves calculating the time required for the center of a large aluminum slab to reach a temperature of 388.8 K, given its initial temperature and properties, when exposed to a cooler environment.
CORROSION REPORT(refined)
A biomass power heat exchanger corroded severely after only 6 years of operation. An investigation was conducted to understand why and develop a solution. It was found that condensation forming on the outside of the pipes from the temperature gradient between the hot flue gases and cooler air inside the pipes was the primary cause of corrosion, especially in the first meter. To address this, the report proposes installing a concentric aluminum pipe to pre-heat the inlet air with steam and reduce the temperature gradient, which should significantly decrease condensation and corrosion of a new heat exchanger.
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 02 Assignment
Chemical Engineering CH EN 3453 Heat Transfer
from University of Utah, 2014 Fall
Homework HW 02 Assignment
Critical thickness of insulation
It is basic information about what is critical thickness and why we should we know this. Then there is critical thickness formula for cylindrical pipe and spherical shell.
6 resistance thermometry
This document summarizes key principles of resistance thermometry. It discusses how resistance thermometers work by using a sensor whose resistance varies with temperature. Platinum resistance thermometers are commonly used and provide absolute temperature measurements. The document describes the construction of platinum resistance thermometer sensors using platinum wire wound around mica and sealed in protective tubes. It also discusses other sensor materials like nickel and copper, as well as thermistors which use semiconducting materials with a negative coefficient of resistivity.
Energy - q=mCT - equation
The set of energy Problems to practice understanding use of q=mCT equation.
Variables and [units]: q - Heat [J]; m - Mass [g]; C - Specific Heat Capacity [J/g*oC or J/g*K]; delta T - change in temperature [oC or K]
Mid semester qp
1. This document appears to be a midterm exam for a heat transfer course taken by mechanical engineering students with a specialization in chemical process engineering.
2. The exam is divided into two parts - Part A contains 10 short answer questions worth 2 marks each on topics related to heat transfer concepts. Part B contains 4 long answer numerical problems worth 10 marks each.
3. The long answer problems involve calculating the time taken for a raindrop to reduce in diameter due to evaporative cooling, determining the heat loss and coolant requirements for an aircraft wing, sizing a resistance heater to heat water in a pipe, and designing a condenser by calculating tube length and heat transfer coefficient.
4cheagroup3
The document contains two physics problems involving heat transfer calculations. The first problem involves calculating the required thickness of insulation needed to limit heat loss from a furnace wall to 1830 W/m^2, given the wall thickness, material properties, and inner and outer surface temperatures. The second problem involves calculating the time required for the temperature at a depth of 25.4 mm to reach 388.8 K in a large aluminum slab initially at 505.4 K that is suddenly exposed to an environment at 338.8 K.
4a group4 edited
The document describes a problem calculating the heat loss from a furnace with inner dimensions of 1m x 1.2m x 0.75m and 11cm thick refractory walls. It provides the inner and outer surface temperatures and conductivity and calculates the total heat loss as 881798399.8 J over 24 hours by conduction through the walls. A second problem calculates the heat loss from a duct with ceramic and insulation layers given temperatures, thicknesses, and conductivities. It uses an iterative process to calculate the interface temperature and heat loss.
What's hot (14)
Askeland phulenotes ch21printable propiedades termicas de los
Askeland phulenotes ch21printable propiedades termicas de los
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 02 Assignment
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 02 Assignment
Similar to Ejercicio uno procesos
X10709 (me8693)
This document contains details regarding an examination for a heat and mass transfer course, including:
1) The exam has 3 parts consisting of short answer, long answer, and case study questions worth 20, 65, and 15 marks respectively.
2) Sample questions assess topics like fin analysis, boundary layers, heat exchanger design, phase change processes, and radiation heat transfer.
3) One long answer question involves calculating temperatures in a multi-layer wall and determining the heat loss, while another evaluates melting of an iceberg towed through water.
Tutorial.pptx
The document contains 10 problems related to heat transfer and thermodynamics. The problems involve calculating temperatures, time required to reach a temperature, temperature distributions, and deriving governing equations for heat transfer. Lumped system analysis, transient and steady-state heat conduction, convection, and thermal resistances are concepts used.
Tutorial#2.pptx
1. The temperature of a thermocouple junction will reach 99% of the initial temperature difference in a gas stream within a certain time, using lumped system analysis and given properties of the junction and convection heat transfer coefficient.
2. The time required for the temperature of a steel sphere coated with a dielectric material and initially at 500°C to reach 140°C when suddenly quenched in an oil bath at 100°C can be estimated, neglecting energy storage in the small dielectric coating.
3. The transient temperature at the midpoint of a stainless steel electrical iron base being heated on one surface can be derived and calculated, given properties, heating power, convection conditions, and time.
tutorial#3 Solution.pptx
This document contains multiple heat transfer problems involving pipes, fins, and composite walls. The first problem involves calculating the overall heat transfer coefficient and dominant resistance for a steel pipe with water flowing inside at 500 W/m2K and the outside exposed to 12 W/m2K. The second problem involves calculating the maximum possible heat generation rate for electric heater wires in a solid wall to keep the temperature below 300°C with boundary conditions of 50 W/m2K and 75 W/m2K. The third problem involves determining the increase in heat transfer from adding fins to steam tubes in a heating system.
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 07 Assignment
Chemical Engineering CH EN 3453 Heat Transfer
from University of Utah, 2014 Fall
Homework HW 07 Assignment
2 dimentional steady state conduction.pdf
This summary provides the key details from the multi-part document in 3 sentences or less:
Part 1 describes a system of hot and cold water pipes buried underground, providing dimensions and material properties to estimate heat transfer between the pipes.
Part 2 evaluates the feasibility of transporting steam through an underground pipe from a power plant to a building complex 0.2 miles away, considering pipe dimensions, steam conditions, and soil properties.
Parts 3-5 present additional conduction heat transfer problems involving buried tanks, extruded shapes, and pipes in soil, providing geometry, material properties, and boundary conditions to calculate heat transfer rates and temperature distributions using analytical solutions.
Assignment#1.pptx
1. The document provides 10 problems related to one-dimensional steady-state heat conduction. The problems involve determining temperature distributions, heat fluxes, heat transfer rates, and thermal resistances for various geometries including walls, pipes, spheres, and cylinders. The materials include aluminum, stainless steel, and other unspecified solids. Boundary conditions include specified temperatures, insulation, convection, and heat generation.
Heat transfer experiment for chemical engineering student
This Pdf contain all the experiment of heat transfer lab.You can get many things which is needed for write an experiment.
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 08 Assignment
Chemical Engineering CH EN 3453 Heat Transfer
from University of Utah, 2014 Fall
Homework HW 08 Assignment
Mathcad Functions for Conduction heat transfer calculations
This file contains notes on Mathcad Functions for Conduction heat transfer calculations. Some problems are also included.
These notes were prepared while teaching Heat Transfer course to the M.Tech. students in Mechanical Engineering Dept. of St. Joseph Engineering College, Vamanjoor, Mangalore, India.
It is hoped that these notes will be useful to teachers, students, researchers and professionals working in this field.
HMT UNIT-II.pptx
1. The document discusses heat transfer from fins and unsteady state heat conduction. It covers topics such as types of fins, the fin equation, fin efficiency, and transient versus steady heat transfer.
2. It provides equations for calculating temperature variation along fins, heat transfer from fins, and fin efficiency. Different boundary conditions for fin tips are also examined.
3. Transient or unsteady state heat conduction involves temperature changing over time as well as position, such as during cooling of engines or boiler tubes. The lumped system approach and analytical solutions for some basic geometries are described.
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 06 Assignment
Chemical Engineering CH EN 3453 Heat Transfer
from University of Utah, 2014 Fall
Homework HW 06 Assignment
Heat 2
This document discusses various methods of measuring thermal conductivity, including Searle's method for good conductors and Lees' disc method for bad conductors. It also defines key terms like thermal conductivity, U-value, and types of thermal convection. Searle's method involves passing water through a copper coil in contact with a bar and measuring temperature changes to determine conductivity. Lees' disc method sandwiches a bad conductor between a steam chest and brass slab, then measures temperature changes to determine conductivity. Thermal convection involves heat transfer through fluid movement, and can be natural/free or forced.
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 04 Assignment
This document contains information about a heat transfer course including homework assignments. The first problem discusses using a heat sink made of copper fins to increase surface area and convection heat transfer from computer chips. It provides dimensions for the heat sink fins and equations to calculate the maximum allowable chip power. The second problem asks for the temperature of a radioactive waste storage container buried underground.
Thermal Expansion & Heat Transfer
Thermal expansion is the change in dimensions of a material due to a change in temperature. Most materials expand when heated and contract when cooled. The factors that affect thermal expansion are the amount of temperature change, the type of material, and the original dimensions. Thermal expansion can be linear, affecting length, or volumetric, affecting the overall volume. Different materials have different coefficients of thermal expansion that quantify how much the material expands or contracts with temperature changes.
4b Group1
The document contains multiple engineering problems related to heat transfer. Problem 1 calculates the heat loss per meter of a steam pipe covered with an insulating coating. Problem 9 calculates the heat loss from an electric furnace with firebrick walls and a quartz window. Problem 5.2-1 involves calculating the time for a copper wire to cool from an initial to final temperature under different convection coefficients. Problem 4.3-4 calculates the heat loss and steam condensed per hour for an insulated steam pipeline.
4b Group1
The document contains multiple engineering problems related to heat transfer. Problem 1 calculates the heat loss per meter of a steam pipe covered with an insulating coating. Problem 9 calculates the heat loss from an electric furnace with firebrick walls and a quartz window. Problem 5.2-1 involves calculating the time for a copper wire to cool from an initial to final temperature under different convection coefficients. Problem 4.3-4 calculates the heat loss and steam condensed per hour for an insulated steam pipeline.
hEAT tRANSFER (1).pptx
Heat transfer analysis is needed to optimally design heat exchangers and determine equipment sizes. It is essential for sizing nuclear reactor cores, aircraft performance, refrigeration applications, and solar equipment. Thermodynamic analysis determines the heat required for a state change, while heat transfer analysis evaluates the rate of heat transfer. The three methods of heat transfer are conduction through solids, convection through fluid movement, and radiation through electromagnetic waves. Extended surfaces like fins increase heat transfer area and rates.
2- C?>,cllblm,cvblkjbvclkbjlcjblkjlbkjcvlkbjonduction.pdf
This document provides an introduction to heat transfer and the different modes of heat transfer including conduction, convection, radiation, boiling, and condensation. It defines key terms like thermal conductivity and heat flux. Examples of one-dimensional heat conduction through plane walls, cylindrical walls, and multilayer walls are presented. The document also provides sample problems and their solutions for determining heat transfer rates through composite walls and insulated cylinders.
Heat and mass transfer
The document contains the following:
1) A heat and mass transfer exam with 8 questions across 2 parts (A and B). Questions cover topics like deriving the 3D heat conduction equation, calculating heat transfer coefficients, temperature distributions, and more.
2) Part A questions derive the 3D heat conduction equation, calculate heat loss from a insulated pipe, and determine the temperature distribution in a plate heater system.
3) Part B questions calculate heat transfer over a flat plate, from a sphere, in a cross-flow heat exchanger, for condensation on a tube, and boiling in a pan. Questions also cover the logarithmic mean temperature difference and radiation heat transfer between plates.
Similar to Ejercicio uno procesos (20)
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 07 Assignment
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 07 Assignment
Heat transfer experiment for chemical engineering student
Heat transfer experiment for chemical engineering student
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 08 Assignment
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 08 Assignment
Mathcad Functions for Conduction heat transfer calculations
Mathcad Functions for Conduction heat transfer calculations
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 06 Assignment
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 06 Assignment
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 04 Assignment
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 04 Assignment
2- C?>,cllblm,cvblkjbvclkbjlcjblkjlbkjcvlkbjonduction.pdf
2- C?>,cllblm,cvblkjbvclkbjlcjblkjlbkjcvlkbjonduction.pdf
Recently uploaded
A SYSTEMATIC RISK ASSESSMENT APPROACH FOR SECURING THE SMART IRRIGATION SYSTEMS
The smart irrigation system represents an innovative approach to optimize water usage in agricultural and landscaping practices. The integration of cutting-edge technologies, including sensors, actuators, and data analysis, empowers this system to provide accurate monitoring and control of irrigation processes by leveraging real-time environmental conditions. The main objective of a smart irrigation system is to optimize water efficiency, minimize expenses, and foster the adoption of sustainable water management methods. This paper conducts a systematic risk assessment by exploring the key components/assets and their functionalities in the smart irrigation system. The crucial role of sensors in gathering data on soil moisture, weather patterns, and plant well-being is emphasized in this system. These sensors enable intelligent decision-making in irrigation scheduling and water distribution, leading to enhanced water efficiency and sustainable water management practices. Actuators enable automated control of irrigation devices, ensuring precise and targeted water delivery to plants. Additionally, the paper addresses the potential threat and vulnerabilities associated with smart irrigation systems. It discusses limitations of the system, such as power constraints and computational capabilities, and calculates the potential security risks. The paper suggests possible risk treatment methods for effective secure system operation. In conclusion, the paper emphasizes the significant benefits of implementing smart irrigation systems, including improved water conservation, increased crop yield, and reduced environmental impact. Additionally, based on the security analysis conducted, the paper recommends the implementation of countermeasures and security approaches to address vulnerabilities and ensure the integrity and reliability of the system. By incorporating these measures, smart irrigation technology can revolutionize water management practices in agriculture, promoting sustainability, resource efficiency, and safeguarding against potential security threats.
Eric Nizeyimana's document 2006 from gicumbi to ttc nyamata handball play
this notes have been created
by Eric36 at nyamata ttc
after readings
pe book for y2sme .
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODEL
As digital technology becomes more deeply embedded in power systems, protecting the communication
networks of Smart Grids (SG) has emerged as a critical concern. Distributed Network Protocol 3 (DNP3)
represents a multi-tiered application layer protocol extensively utilized in Supervisory Control and Data
Acquisition (SCADA)-based smart grids to facilitate real-time data gathering and control functionalities.
Robust Intrusion Detection Systems (IDS) are necessary for early threat detection and mitigation because
of the interconnection of these networks, which makes them vulnerable to a variety of cyberattacks. To
solve this issue, this paper develops a hybrid Deep Learning (DL) model specifically designed for intrusion
detection in smart grids. The proposed approach is a combination of the Convolutional Neural Network
(CNN) and the Long-Short-Term Memory algorithms (LSTM). We employed a recent intrusion detection
dataset (DNP3), which focuses on unauthorized commands and Denial of Service (DoS) cyberattacks, to
train and test our model. The results of our experiments show that our CNN-LSTM method is much better
at finding smart grid intrusions than other deep learning algorithms used for classification. In addition,
our proposed approach improves accuracy, precision, recall, and F1 score, achieving a high detection
accuracy rate of 99.50%.
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network
Unit-III-ELECTROCHEMICAL STORAGE DEVICES.ppt
Batteries -Introduction – Types of Batteries – discharging and charging of battery - characteristics of battery –battery rating- various tests on battery- – Primary battery: silver button cell- Secondary battery :Ni-Cd battery-modern battery: lithium ion battery-maintenance of batteries-choices of batteries for electric vehicle applications.
Fuel Cells: Introduction- importance and classification of fuel cells - description, principle, components, applications of fuel cells: H2-O2 fuel cell, alkaline fuel cell, molten carbonate fuel cell and direct methanol fuel cells.
TIME DIVISION MULTIPLEXING TECHNIQUE FOR COMMUNICATION SYSTEM
Time Division Multiplexing (TDM) is a method of transmitting multiple signals over a single communication channel by dividing the signal into many segments, each having a very short duration of time. These time slots are then allocated to different data streams, allowing multiple signals to share the same transmission medium efficiently. TDM is widely used in telecommunications and data communication systems.
### How TDM Works
1. **Time Slots Allocation**: The core principle of TDM is to assign distinct time slots to each signal. During each time slot, the respective signal is transmitted, and then the process repeats cyclically. For example, if there are four signals to be transmitted, the TDM cycle will divide time into four slots, each assigned to one signal.
2. **Synchronization**: Synchronization is crucial in TDM systems to ensure that the signals are correctly aligned with their respective time slots. Both the transmitter and receiver must be synchronized to avoid any overlap or loss of data. This synchronization is typically maintained by a clock signal that ensures time slots are accurately aligned.
3. **Frame Structure**: TDM data is organized into frames, where each frame consists of a set of time slots. Each frame is repeated at regular intervals, ensuring continuous transmission of data streams. The frame structure helps in managing the data streams and maintaining the synchronization between the transmitter and receiver.
4. **Multiplexer and Demultiplexer**: At the transmitting end, a multiplexer combines multiple input signals into a single composite signal by assigning each signal to a specific time slot. At the receiving end, a demultiplexer separates the composite signal back into individual signals based on their respective time slots.
### Types of TDM
1. **Synchronous TDM**: In synchronous TDM, time slots are pre-assigned to each signal, regardless of whether the signal has data to transmit or not. This can lead to inefficiencies if some time slots remain empty due to the absence of data.
2. **Asynchronous TDM (or Statistical TDM)**: Asynchronous TDM addresses the inefficiencies of synchronous TDM by allocating time slots dynamically based on the presence of data. Time slots are assigned only when there is data to transmit, which optimizes the use of the communication channel.
### Applications of TDM
- **Telecommunications**: TDM is extensively used in telecommunication systems, such as in T1 and E1 lines, where multiple telephone calls are transmitted over a single line by assigning each call to a specific time slot.
- **Digital Audio and Video Broadcasting**: TDM is used in broadcasting systems to transmit multiple audio or video streams over a single channel, ensuring efficient use of bandwidth.
- **Computer Networks**: TDM is used in network protocols and systems to manage the transmission of data from multiple sources over a single network medium.
### Advantages of TDM
- **Efficient Use of Bandwidth**: TDM all
ISPM 15 Heat Treated Wood Stamps and why your shipping must have one
For International shipping and maritime laws all wood must contain the ISPM 15 Stamp. Here is how and why.
5214-1693458878915-Unit 6 2023 to 2024 academic year assignment (AutoRecovere...
Bigdata of technology
A review on techniques and modelling methodologies used for checking electrom...
The proper function of the integrated circuit (IC) in an inhibiting electromagnetic environment has always been a serious concern throughout the decades of revolution in the world of electronics, from disjunct devices to today’s integrated circuit technology, where billions of transistors are combined on a single chip. The automotive industry and smart vehicles in particular, are confronting design issues such as being prone to electromagnetic interference (EMI). Electronic control devices calculate incorrect outputs because of EMI and sensors give misleading values which can prove fatal in case of automotives. In this paper, the authors have non exhaustively tried to review research work concerned with the investigation of EMI in ICs and prediction of this EMI using various modelling methodologies and measurement setups.
官方认证美国密歇根州立大学毕业证学位证书原版一模一样
原版一模一样【微信：741003700 】【美国密歇根州立大学毕业证学位证书】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Recycled Concrete Aggregate in Construction Part III
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
ACEP Magazine edition 4th launched on 05.06.2024
This document provides information about the third edition of the magazine "Sthapatya" published by the Association of Civil Engineers (Practicing) Aurangabad. It includes messages from current and past presidents of ACEP, memories and photos from past ACEP events, information on life time achievement awards given by ACEP, and a technical article on concrete maintenance, repairs and strengthening. The document highlights activities of ACEP and provides a technical educational article for members.
2008 BUILDING CONSTRUCTION Illustrated - Ching Chapter 02 The Building.pdf
2008 BUILDING CONSTRUCTION Illustrated - Ching Chapter 02 The Building
Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024
Sinan from the Delivery Hero mobile infrastructure engineering team shares a deep dive into performance acceleration with Gradle build cache optimizations. Sinan shares their journey into solving complex build-cache problems that affect Gradle builds. By understanding the challenges and solutions found in our journey, we aim to demonstrate the possibilities for faster builds. The case study reveals how overlapping outputs and cache misconfigurations led to significant increases in build times, especially as the project scaled up with numerous modules using Paparazzi tests. The journey from diagnosing to defeating cache issues offers invaluable lessons on maintaining cache integrity without sacrificing functionality.
Embedded machine learning-based road conditions and driving behavior monitoring
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
Casting-Defect-inSlab continuous casting.pdf
Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting. Casting-Defect-inSlab continuous casting
Recently uploaded (20)
A SYSTEMATIC RISK ASSESSMENT APPROACH FOR SECURING THE SMART IRRIGATION SYSTEMS
A SYSTEMATIC RISK ASSESSMENT APPROACH FOR SECURING THE SMART IRRIGATION SYSTEMS
basic-wireline-operations-course-mahmoud-f-radwan.pdf
basic-wireline-operations-course-mahmoud-f-radwan.pdf
Eric Nizeyimana's document 2006 from gicumbi to ttc nyamata handball play
Eric Nizeyimana's document 2006 from gicumbi to ttc nyamata handball play
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODEL
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODEL
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...
TIME DIVISION MULTIPLEXING TECHNIQUE FOR COMMUNICATION SYSTEM
TIME DIVISION MULTIPLEXING TECHNIQUE FOR COMMUNICATION SYSTEM
BPV-GUI-01-Guide-for-ASME-Review-Teams-(General)-10-10-2023.pdf
BPV-GUI-01-Guide-for-ASME-Review-Teams-(General)-10-10-2023.pdf
ISPM 15 Heat Treated Wood Stamps and why your shipping must have one
ISPM 15 Heat Treated Wood Stamps and why your shipping must have one
5214-1693458878915-Unit 6 2023 to 2024 academic year assignment (AutoRecovere...
5214-1693458878915-Unit 6 2023 to 2024 academic year assignment (AutoRecovere...
A review on techniques and modelling methodologies used for checking electrom...
A review on techniques and modelling methodologies used for checking electrom...
Recycled Concrete Aggregate in Construction Part III
Recycled Concrete Aggregate in Construction Part III
2008 BUILDING CONSTRUCTION Illustrated - Ching Chapter 02 The Building.pdf
2008 BUILDING CONSTRUCTION Illustrated - Ching Chapter 02 The Building.pdf
Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024
Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024
Embedded machine learning-based road conditions and driving behavior monitoring
Embedded machine learning-based road conditions and driving behavior monitoring
Generative AI leverages algorithms to create various forms of content
Generative AI leverages algorithms to create various forms of content
Ejercicio uno procesos
- 1. 1 CHAPTER XX COMPUTATİONAL CONDUCTİON HEAT TRANSFER EXAMPLE SOLUTIONS 1) An iron rod L= 5 cm long of diameter D= 2 cm with thermal conductibity k= 50 W/m.C placed from a wall and is exposed to an ambient at T∞= 20 C and h=100 W/m2 .C. The base of rod is at To = 320 C and its tip is insulated. Assuming one dimensional conduction, calculate temperature distribution along the rod and the rate of heat flow into the abient solution.
- 2. 2
- 3. 3
- 4. 4
- 5. 5 2) A 1 cm diameter 3 cm long carbon steel fin transfers heat from the wall of a heat exchanger at 200 C to a fluid at 25 C with ℎ̅= 120 W/m2 .C. Fin tip is insulated. Determine temperature distribution utilning a grip spacing of ∆x= L/4.
- 6. 6
- 7. 7 3) Consider two dimensional steady conduction in a squaree cross section with prescribed surface temperatures. a) Determine the temperatures at nodes 1,2,3 and 4. Estimate the midpoint temperature. Solution
- 8. 8
- 9. 9 4) A long bar of rectangular cross section is 60 mm by 90 mm on a side and has a thermal conductivity of 1 W/m.K. One surface is exposed to convection process with air at 100 C and a convection coefficient of 100 W/m2 .C while remaining surfaces are maintained at 50 C. Using a grid spacing of 30 mm determine nodal temperatures and heat rate unit length normal to the page into bar from the air.
- 10. 10
- 11. 11
- 12. 12 5) Develop a numerical solution fort he plate shown: A 0.5 MW/m3 energy is generated uniformly within the body. Take ∆X= L/2.
- 13. 13
- 14. 14
- 15. 15
- 16. 16
- 17. 17
- 18. 18