Question
In: Mechanical Engineering
Transient heat transfer Leaking steam completely fills a room, pushing out all of the air. The...
Transient heat transfer
Leaking steam completely fills a room, pushing out all of the air. The steam is at atmospheric pressure. Because the mortar cement siding walls are initially cool, at a uniform temperature of 22C, the steam begins to condense on the walls. Find the rate of condensation per square meter of wall at (a) 10 s and (b) 30 s after the leak.
The wall is 10 cm thick, and you may assume that the other side of the wall, the side not in contact with the steam, is insulated. You may make the following simplifying assumptions:
• The convective heat transfer rate due to steam condensation is infinitely high and remains constant
• The effects of radiation are negligible.
Solutions
samet mamat answered 2 years agoRelated Solutions
An air compressor rapidly fills a 0.3m3 tank (there is no heat transfer through the tank...
An air compressor rapidly fills a 0.3m3 tank (there is no heat
transfer through the tank walls), initially containing air at 27
?C, 1 atm, with air drawn from the atmosphere at 27? ?C, 1 atm.
During filling, the relationship between the pressure and specific
volume of the air in the tank is pv1.4 = constant. You can
model the air as an ideal gas with constant specific heats at
300K.
Calculate (and show your work) the tank’s pressure and...
An air compressor rapidly fills a 0.3m3 tank (there is no heat transfer through the tank...
An air compressor rapidly fills a 0.3m3 tank (there is no heat
transfer through the tank walls), initially containing air at 27
?C, 1 atm, with air drawn from the atmosphere at 27? ?C, 1 atm.
During filling, the relationship between the pressure and specific
volume of the air in the tank is pv1.4 = constant. You can
model the air as an ideal gas with constant specific heats at
300K.
Calculate (and show your work) the tank’s pressure and...
What is transient heat transfer? why it is important?
What is transient heat transfer? why it is important?
A heat exchanger is used to transfer heat from a steam stream to a chlorine gas...
A heat exchanger is used to transfer heat from a steam stream to
a chlorine gas stream. 100 kg of steam at 1 bar and 250°C enters
the heat exchanger and leaves the exchanger as saturated steam at 1
bar. Chlorine gas enters the exchanger at 1 bar and 33.0°C and
leaves the exchanger at 132.0°C. Assume the heat exchanger is
adiabatic.
A)What is the specific enthalpy of the inlet steam stream? (Use
liquid water at 0.01°C as a reference...
Consider the transient heat transfer of a solid object suddenly exposed to an unbounded flow at...
Consider the transient heat transfer of a solid object suddenly
exposed to an unbounded flow at different temperature. Based on the
Lumped-heat capacity model (LHCM), the response time of heat
transfer to the solid can be used to determine the convective heat
transfer coefficient. Assume that the solid initial temperature,
the ambient fluid temperature, and a temperature at the center of
solid at a given time (after the exposure) are measurable. (1)
Ignoring the radiation, derive an equation to correlate...
1. Fundamentals of Heat Transfer: 2. Use of steam table:
1. Fundamentals of Heat Transfer:
2. Use of steam table:
3. team table are generally used
4. Heating value of hydrocarbons.
Describe how to improve the efficiency of a room related to heat loss. Heat transfer can...
Describe how to improve the efficiency of a room related
to heat loss.
Heat transfer can occur through conduction, radiation,
and convection.
Determine the overall heat transfer coefficient (U) in a heat exchanger that uses steam to heat water to the point of vaporization (in vacuum.)
Determine the overall heat transfer coefficient (U) in a heat exchanger that uses steam to heat water to the point of vaporization (in vacuum.) The system is non-insulated, so the heat lost to the surroundings must be taken into consideration. While I know that the heat Q = mCdT and the heat transfer rate q = UAdT(Log-mean), I am struggling to equate the two due to the heat lost to the surroundings. How do I go about determining the overall...
Exercise Estimate the requirements of steam and heat transfer surface, and the evaporating temperatures in each...
Exercise
Estimate the requirements of steam and heat transfer surface,
and the evaporating temperatures in each effect, for a triple
effect evaporator evaporating 500 kg h-1 of a 10%
solution up to a 30% solution. Steam is available at 200 kPa gauge
and the pressure in the evaporation space in the final effect is 60
kPa absolute. Assume that the overall heat transfer coefficients
are 2270, 2000 and 1420 J m-2 s-1
°C-1 in the first, second and third effects...
Evaluate a room 12'x12' height 10' write a heat transfer equation consistent with the room dimension,
Evaluate a room 12'x12' height 10' write a heat transfer
equation consistent with the room dimension,
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- A: Provide a numerical example of how Earned Value Management may mislead us as to whether...
- Daryl wishes to save money to provide for his retirement. Beginning one month from now, he...
- L= {w belongs to {0,1}* | the number of 0's is a prime number} . Prove...
- What are Foyal's five management functions? Identify which organizational units accomplish these functions in your airport...
- An air conditioning unit, where water condensation is allowed, cools 9,791 m3 / min of humid...
- how do u calculate value of a bond You consider purchasing $1000 face value 7 year...
- Why am I getting this error using 000webhost , but I do not get this error...
ADVERTISEMENT