Question

In: Physics

A wood burning stove is box shaped with a height of 30.7”, width 26.25” and depth...

A wood burning stove is box shaped with a height of 30.7”, width 26.25” and depth 25.5”. The front surface is glass (Ԑ= 0.9) and the other surfaces are cast iron (Ԑ= 0.7). The fire keeps the stove surface at a constant 202 °C.

a.Calculate the rate at which the stove’s one glass surface (30.7” by 26.25”) radiates heat into the surrounding space.

b.Calculate the rate at which the cast iron sides radiate heat into the surrounding space. Add this to your answer to part a) to determine the total rate of radiation into the surrounding space. Assume the stove is raised off the floor so the bottom radiates.

c. If the surrounding temperature is 22 °C, find the net rate of radiative heat transfer from the wood stove to the surroundings

Solutions

Expert Solution

Rate of heat radiated is

Area of glass surface is

For glass ,

Temperature

Rate of heat radiated by glass is

For cast iron

Areas of 5 cast iron surfaces are ,

Rate of heat radiated by cast iron is

Surrounding temperature is

Net rate of heat transfer from wood stove to surroundings

genius_generous answered 1 year ago

Next > < Previous

Related Solutions

A microwave has a width of 29 inches, depth of 15 inches, and a height of...

A microwave has a width of 29 inches, depth of 15 inches, and a height of 16 inches. The power of the microwave is 1.65 kW. Use this information to solve these questions. Assume that microwave energy is generated uniformly on the upper surface of the cavity and propagates directly downward toward the base. The base is lined with a material that completely absorbs microwave energy. (c = 3.00 × 108 m/s, μ0 = 4π × 10-7 T ∙ m/A,...

The length, width, and height of a box are measured as 5 ft, 4 ft, and...

The length, width, and height of a box are measured as 5 ft, 4 ft, and 8 ft, respectively, with an error in measurement of at most 0.3 ft in each. Use differentials to estimate the maximum error (in feet) in the calculated volume of the box.

The length ℓ, width w, and height h of a box change with time. At a...

The length ℓ, width w, and height h of a box change with time. At a certain instant the dimensions are ℓ = 4 m and w = h = 1 m, and ℓ and w are increasing at a rate of 8 m/s while h is decreasing at a rate of 2 m/s. At that instant find the rates at which the following quantities are changing. (a) The volume. (b) The surface area. (c) The length of a diagonal....

The length l, width w, and height h of a box change with time. At a...

The length l, width w, and height h of a box change with time. At a certain instant the dimensions are l = 2 m and w = h = 3 m, and l and w are increasing at a rate of 7 m/s while h is decreasing at a rate of 5 m/s. At that instant find the rates at which the following quantities are changing. (a) The volume. m3/s (b) The surface area. m2/s (c) The length of...

A wood stove is used to heat a single room. The stove is cylindrical in shape,...

A wood stove is used to heat a single room. The stove is cylindrical in shape, with a diameter of 40.0 cm and a length of 50.0cm and operates at a temperature of 400oF. (a) If the temperature of the room is 70.0oF, determine the anount of radiant energy delivered to the room by the stove each second if the emissivity is 0.920. (b) If the room is a square withwalls that are 8.00ft. high and 25.0 ft wide, determine...

We consider a rectangular parallelepiped-shaped box based on a rectangle and open from above. The height...

We consider a rectangular parallelepiped-shaped box based on a rectangle and open from above. The height of the box is 4 dm. The base of the box has a fixed perimeter 20 dm and one side of it is x with 0 <x <10. a. Prove that the total area of the box as a function of x is E(x)=-x2+10x=80, x belongs to (0,10) b. Find for which value of x the box has a maximum area. c. Show that...

Design a rectangular milk carton box of width w, length ll, and height h which holds...

Design a rectangular milk carton box of width w, length ll, and height h which holds 540 cm^3 of milk. The sides of the box cost 1 cent/cm^2 and the top and bottom cost 3 cent/cm^2. Find the dimensions of the box that minimize the total cost of materials used.

A rectangular box has a length of 1 in, width of 2 in, and height of 3 in. Find the cosine of the angle between the diagonal of the box and the diagonal of its base.

A rectangular box has a length of 1 in, width of 2 in, and height of 3 in. Find the cosine of the angle between the diagonal of the box and the diagonal of its base. what is the volume of the parallelepiped by <-5; 2; 1>, <1; -1; -3> and<-1; -1; -4>? (a) 9 (b) 10 (c) 11 (d) 12 (e) None of the above

1.) A box made of wood is sitting on a wooden floor. The box and contents...

1.) A box made of wood is sitting on a wooden floor. The box and contents has mass 40kg. The coefficient of static friction is 0.50 and kinetic friction is 0.30. A person begins to push the box horizontally by slowly increasing their force until it reaches 160N. Describe the state of motion (if any) of the box and the frictional force acting. 2.) The formula for friction is f=uN, for both static and dynamic friction. What factors that may...

Q2 A concrete strip footing with a width of B is founded at the depth of...

Q2 A concrete strip footing with a width of B is founded at the depth of D, below the surface of a level site. The water table is at a depth of d below the base of footing. The soil at the site consists of clay having the following properties: The unit weight = gt, the undrained cohesion = cu, the undrained friction angle = fu, the drained cohesion = c′ and the drained friction angle = f′ Use Hansen’s...

Subjects