Calculate the input energy or heat input and the net input energy of a weld made...
Calculate the input energy or heat input and the net
input energy of a weld made with the following parameters V=
24volts, I= 150 Amps, V= 3mm/ sec
A) with the Smaw process
B) With a SAW process
C) with a GTAW process
Homework Answers
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Calculate the input energy or heat input and the net
input energy of a weld made...
Same as exercise 51, however add To =300 C Exercise 51 says: calculate the cooling time...
Same as exercise 51, however add To =300 C
Exercise 51 says: calculate the cooling time between 800°C and 500
°C in a welding process carried out with a smaw on a steel with the
following welding parameters : voltage= 30 volts I= 180 Amp v(
velocity) = 3mm/sec T0= 20°C p= 7.85 gr/ cm3 C= 0.56 J/ gr°C V-
joint d= 1cm
Lambda( Greek letter) = 0.35 J/ sec°C cm
53)Idem Eieercicio 51, empleando precalentamiento T2=300c EL. 51 dice:...
Welding Problem A gas tungsten arc welding operation is used to create a fillet weld on both side...
Welding Problem A gas tungsten arc welding operation is used to create a fillet weld on both sides of a T-joint between two 1" thick medium carbon steel plates. The length of the T-joint is 36". The fillet weld as has a" legs. The welding operation will be carried out at a current 300 amps and a voltage of 20V. The welding process melts a volume of the parent material that is equal to 30% of the volume of the...
11) In an electric power plant (a heat engine) energy as heat is input at a...
11) In an electric power plant (a heat engine) energy as heat is input at a temperature of Ty and exhaust heat is output at a temperature of Tc. This heat engine has an efficiency that is 55% (0.55 times) that of an ideal engine operating between these same temperatures. If the maximum waste heat that can be output at Tc is Qout Joules per second (Watts), what is the maximum Work (electrical output) that can be provided by the...
(a) One mole of a monoatomic van der Waals gas obeys the equation of state A3. ) (V-b)=RT (p+ and its internal energy is expressed as U CvT where Cv is the molar isochoric heat capacity of an ideal g...
(a) One mole of a monoatomic van der Waals gas obeys the equation of state A3. ) (V-b)=RT (p+ and its internal energy is expressed as U CvT where Cv is the molar isochoric heat capacity of an ideal gas. The gas is initially at pressure p and volume V (i) Explain the physical meaning of the parameters a and b in the equation of state of the gas (ii) Write down the equation that defines entropy in thermodynamics. Define...
nts) Calculate the change in internal energy during the conversi . (20 poi on of 2 kg of saturated liquid water to saturated vapor i 100 kPa? Assuming heat is added to the piston cylinder in the...
nts) Calculate the change in internal energy during the conversi . (20 poi on of 2 kg of saturated liquid water to saturated vapor i 100 kPa? Assuming heat is added to the piston cylinder in the process, what is the work performed by the piston (boundary work)? What is the required heat in if you assume a heat loss of 50 kJ during the process? Please show work using a T-v AND P-v diagram n a piston cylinder at...
A) What is net transfer of energy by heat? a: It is the sum of all...
A) What is net transfer of energy by heat? a: It is the sum of all energy transfers by heat into the system. b: It is the product of all energy transfers by heat into the system. c: It is the sum of all energy transfers by heat into and out of the system. d: It is the product of all energy transfers by heat into and out of the system. B) Under what conditions will the work done by...
3.37 Use the heat equation to calculate the energy for each of the following (see Table...
3.37 Use the heat equation to calculate the energy for each of the following (see Table 3.11): a. calories to heat 8.5 g of water from 15 °C to 36 °C b. 2600 joules lost when 25 g of water cools from 86°C to 61 °C c. 9.3 kilocalories to heat 150 g of water from 15 °C to 77 °C d. kilojoules to heat 175 g of copper from 28 °C to 188 °C 3.38 Use the beat. cal/g...
Q1 a) Company A designed a heat pump to supply heat into a library in Canada during...
Q1
a) Company A designed a heat pump to
supply heat into a library in Canada during
winter, so that the library can maintain to be at 20°C. The heat
pump utilizes
12,000 L/min of Refrigerant-134a as the working fluid and absorb
heat from an
industrial water stream. The water stream enters the evaporator at
50°C and exits
at 25°C. The refrigerant enters the evaporator at 10°C with 90%
moisture content
and leaves at 20°C. There is no pressure drop in...
1. Consider a disk made of copper, with a specific heat capacity of 0.093 cal/g·C°. How...
1. Consider a disk made of copper, with a specific heat capacity of 0.093 cal/g·C°. How much heat must be removed from a 130 g disk to lower its temperature from 150°C to 24°C? ____ cal 2.A cylinder of gas is heated, with, 870 J of heat is added to the gas. The gas does 160 J of work on its surroundings in this process. What is the change in the internal energy of the gas? ____ J
A cogeneration plant is similar to a power plant, but some of the thermal energy in the working fluid is used for process heat
A cogeneration plant is similar to a power plant, but some of the thermal energy in the working fluid is used for process heat (for example heating buildings, steel making, or oil refining). An ideal reheat Rankine cycle with regeneration is modified to a cogeneration plant by adding a process heater as shown in the figure below. The process heater acts as a heat removal step where the enthalpy of the steam is reduced by the heat output (qprocess=h7-h3). The...
Same as exercise 51, however add To =300 C
Exercise 51 says: calculate the cooling time between 800°C and 500
°C in a welding process carried out with a smaw on a steel with the
following welding parameters : voltage= 30 volts I= 180 Amp v(
velocity) = 3mm/sec T0= 20°C p= 7.85 gr/ cm3 C= 0.56 J/ gr°C V-
joint d= 1cm
Lambda( Greek letter) = 0.35 J/ sec°C cm
53)Idem Eieercicio 51, empleando precalentamiento T2=300c EL. 51 dice:...
Welding Problem A gas tungsten arc welding operation is used to create a fillet weld on both sides of a T-joint between two 1" thick medium carbon steel plates. The length of the T-joint is 36". The fillet weld as has a" legs. The welding operation will be carried out at a current 300 amps and a voltage of 20V. The welding process melts a volume of the parent material that is equal to 30% of the volume of the...
11) In an electric power plant (a heat engine) energy as heat is input at a temperature of Ty and exhaust heat is output at a temperature of Tc. This heat engine has an efficiency that is 55% (0.55 times) that of an ideal engine operating between these same temperatures. If the maximum waste heat that can be output at Tc is Qout Joules per second (Watts), what is the maximum Work (electrical output) that can be provided by the...
(a) One mole of a monoatomic van der Waals gas obeys the equation of state A3. ) (V-b)=RT (p+ and its internal energy is expressed as U CvT where Cv is the molar isochoric heat capacity of an ideal gas. The gas is initially at pressure p and volume V (i) Explain the physical meaning of the parameters a and b in the equation of state of the gas (ii) Write down the equation that defines entropy in thermodynamics. Define...
nts) Calculate the change in internal energy during the conversi . (20 poi on of 2 kg of saturated liquid water to saturated vapor i 100 kPa? Assuming heat is added to the piston cylinder in the process, what is the work performed by the piston (boundary work)? What is the required heat in if you assume a heat loss of 50 kJ during the process? Please show work using a T-v AND P-v diagram n a piston cylinder at...
3.37 Use the heat equation to calculate the energy for each of the following (see Table 3.11): a. calories to heat 8.5 g of water from 15 °C to 36 °C b. 2600 joules lost when 25 g of water cools from 86°C to 61 °C c. 9.3 kilocalories to heat 150 g of water from 15 °C to 77 °C d. kilojoules to heat 175 g of copper from 28 °C to 188 °C 3.38 Use the beat. cal/g...
Q1
a) Company A designed a heat pump to
supply heat into a library in Canada during
winter, so that the library can maintain to be at 20°C. The heat
pump utilizes
12,000 L/min of Refrigerant-134a as the working fluid and absorb
heat from an
industrial water stream. The water stream enters the evaporator at
50°C and exits
at 25°C. The refrigerant enters the evaporator at 10°C with 90%
moisture content
and leaves at 20°C. There is no pressure drop in...
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