Question

How much heat will flow in 1.0 hour through a 2.0 m x 2.0 m section...

How much heat will flow in 1.0 hour through a 2.0 m x 2.0 m section of concrete (k = 2.0 x 10-4 kcal/smoC) 10 cm thick if the inside temperature is 21oC and the outside temperature is 4oC?


UNITS PLEASE

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
How much heat will flow in 1.0 hour through a 2.0 m x 2.0 m section...
How much heat will flow in 1.0 hour through a 2.0 m x 2.0 m section of concrete (k = 2.0 x 10-4 kcal/smoC) 10 cm thick if the inside temperature is 21oC and the outside temperature is 4oC? cal or Kcal?? answer 490
Find the amount of thermal energy that will flow through a concrete wall 20.0 m long,1.80...
Find the amount of thermal energy that will flow through a concrete wall 20.0 m long,1.80 m high, and 12.0 cm wide, in a period of 24.0 hr, if the inside temperature of the wall is 15.0◦Cand the outside temperature of the wall is 0.00◦C. (For concrete,k= 1.30 (J/m s◦C).)
4. The wall of a house is 3 m high and 6 m wide, made of...
4. The wall of a house is 3 m high and 6 m wide, made of plywood (k = 0.11 J/(s•m•C°) 1.9 cm thick. The inside of the house is maintained at 72°F (22°C) by an air conditioning unit, while the outside is 88°F (31°C) in the middle of the day. A) What is the thermal resistance of the wall? B) How much heat passes through the wall in one hour? The wall is covered with a layer of fiberglass...
A 2.2 m x 0.94 m x 4.7 cm thick solid wood door has a 0.4...
A 2.2 m x 0.94 m x 4.7 cm thick solid wood door has a 0.4 m square window. The window has two panes of 0.42 cm thick glass with a 0.2 cm thick space between the glass panes that is filled with argon. Argon is used since it has a thermal conductivity that is 34% lower than that of air. The inside air temperature is 21 °C and the outside temperature is -8 °C. Determine the magnitude of the...
A 2.1 m x 0.95 m x 5.2 cm thick solid wood door has a 0.5...
A 2.1 m x 0.95 m x 5.2 cm thick solid wood door has a 0.5 m square window. The window has two panes of 0.47 cm thick glass with a 0.2 cm thick space between the glass panes that is filled with argon. Argon is used since it has a thermal conductivity that is 34% lower than that of air. The inside air temperature is 18 °C and the outside temperature is -11 °C. Determine the magnitude of the...
1. [20] A small building that shelters a water supply pump measures 2 m ×3 m...
1. [20] A small building that shelters a water supply pump measures 2 m ×3 m ×2.4 m high. It is constructed of 1-cm thick wood having a thermal conductivity of 0.126 W∙m-1 ∙K -1 . The inside walls are to be maintained at 10 oC when the outside temperature is -18 oC. How much heat must be supplied to maintain the desired temperature? How much heat must be supplied if the walls are lined with 10 cm of glass-wool...
In a steel spherical reactor with a heat transmission coefficient (10 + X) W / mK,...
In a steel spherical reactor with a heat transmission coefficient (10 + X) W / mK, water is boiled at 350 oC. The inner diameter of the tank is 80 cm and the wall thickness is (5+ (X / 2)) cm. This tank is insulated with (X) cm thick concrete (k = 2.5 W / mK). Outdoor heat transfer coefficient (10+ (X)) W / m2K, indoor heat transfer coefficient is 500 W / m2K. Calculate both surface temperatures of the...
The front wall of an old jewellery store has an area of 20 m2 and is...
The front wall of an old jewellery store has an area of 20 m2 and is constructed of 200 mm of concrete and 250 mm of polystyrene. The wall contains a large window of 5 m x 2 m of 50 mm thick glass. The inside temperature is 21°C and the outside temperature is 3°C. Calculate: (i) the rate of flow of heat through the glass, and (ii) the total rate of heat transfer through the wall and window. Note:...
A clever student decides to produce and sell windows that consist of two 5.9-mm thick glass...
A clever student decides to produce and sell windows that consist of two 5.9-mm thick glass panes ( thermal conductivity of 1 W/m-K) separated by a 0.9-cm thick layer of aerogel, which has a thermal conductivity of 10-4 W/m-K). Assuming the temperature inside is 19.5˚ C, and the temperature outside is -4.7˚C, what is the approximate heat loss in units of Watts through such a window with area 1 m2?
A house has a composite wall of wood (exterior) (k = 0.12 W m-1 K -1...
A house has a composite wall of wood (exterior) (k = 0.12 W m-1 K -1 , 20 mm thick), fibreglass insulation (k = 0.045 W m-1 K -1 , 70 mm thick) and plasterboard (interior) (k = 0.25 W m-1 K -1 , 10 mm thick). Determine the total heat loss through the wall when the inside temperature is 20 °C, the outside temperature is -10 °C, the inside heat transfer coefficient is 15 W m-2 K -1 ,...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT