Question

Concept: What is the benefit of non-dimensionalizing the convective
heat transfer governing equations? - heat and mass transfer
question

Answer #1

Why convective heat-transfer coefficient(h) of
condensing water vapor is higher than that of boiling water?

What is the heat flux (W/m2) to an object when subjected to
convection heat transfer environment given: 24 °C = the surface
temperature of the object, 82 °C = the bulk temperature of the
fluid adjacent to the object, and the convection heat transfer
coefficient = 49 W/(m^2 K)?
Question 1:
a. 3201
b.
2842
c.
1234
d.
2531

Estimate the convective heat transfer coefficient on the outside
of oranges (external diameter= 5cm) when submerged in a stream of
chilled water pumped around the orange. The velocity of water
around an orange is 0.1 m/s. The surface temperature is 20 C and
the bulk water temperature is 0 C.

Uniform area, heat transfer problem A stove's walls are made up
of a flat inner insulating board 0.01m thick (thermal conductivity:
0.2 W m-1K-1) and a flat outer steel sheet
0.01m thick (thermal conductivity: 26 W
m-1K-1). A mineral-wool (thermal
conductivity: 0.065 W m-1K-1) is placed
between these sheets. The inside temperature of the wall is 773K,
how thick does the insulation have to be to maintain the outside
wall temperature at 323K ? Assume that the ambient air temperature...

what is transfer efficiency? how can this concept be used to
inform public policy?

The heat flux, q, is 6000 W/m2 at the surface of an electrical
resistance heater. The heater temperature is 120C when it is cooled
by air at 70C. (a) What is the average convective heat transfer
coefficient, ? (b) What will the heater temperature be if q is
reduced to 2000 W/m2?

5. Heat Transfer: Calculate the heat transferred by the faucet
water to the ice water in #4 above: (a)
Use the following equation: Where, Cwater is the specific heat
capacity of water = 1 cal/(gram oC) mwater is the mass the faucet
water added in #4
(b) ΔT is the temperature change of the water [(#2(a) - #4(b))
temperatures] Calculation: SHOW WORK Result: Q =
____________________ cal Convert the value of Q into joules: (1
calorie = 4.2 joules) Q...

"I don't understand this concept of 'profit realisation' in
relation to non-current assets that have been transferred between
entities within a Group." Provide a response to explain how/why
profit is realised on a non-current asset transfer.

What are the two interfaces at which heat transfer occurs? Write
formulas for their areas

under what factor does the heat transfer coefficient is
considered to be variable quantity??

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 1 minute ago

asked 2 minutes ago

asked 3 minutes ago

asked 7 minutes ago

asked 9 minutes ago

asked 9 minutes ago

asked 9 minutes ago

asked 15 minutes ago

asked 15 minutes ago

asked 15 minutes ago

asked 15 minutes ago

asked 15 minutes ago