Water is to be boiled at sea level in a 30-cm-diameter stainless steel pan placed on top of a 3-kW electric burner. If 60% of the heat generated by the burner is transferred to the water during boiling, determine the rate of evaporation of water. See Figure 2-39 attached.
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Please help with the following problems:
We are asked to estimate the evaporation from a static body of water such as a lake or pond.
The dimension of the pond is 76.22m x 60.98m x 1.07m and contains ~ 4921 cubic meters of water.
The mean atmospheric air temp above the pond is 10 degrees C with a relative humidity of 6
What do you think is the cause of the "dip" (i.e., decrease) in salinity around the equator? Could it not be argued that higher temperature causes more evaporation from the ocean surface, which, in turn, results in higher salinity content?
A mothball loses mass by evaporation at a rate proportional to its instantaneous surface area. If half the mass is lost in 100 days, how long will it be before the radius has decreased to one-half its initial value? How long before the mothball disappears completely?
In a nuclear power plant the cooling tower system must be run on a closed cycle. That is, the air exiting the tower passes over cooling coils to return it to its initial condition prior to reentering the tower. Air at 20 degrees C and 40% relative humidity enters the tower at a rate of 1.3 x 106 kg/sec. Water enters the tower
We are asked to explain the phenomena of how 1 gram of liquid water at 35 degrees C (as in a pond or lake) evaporating into an overlying air mass at a temp of 65 degrees C and a relative humidity of 50%.
What actually causes the evaporation of water and how can this be calculated in this instance?? What is the vapor pressure
Please help with the following problem.
An uncovered swimming pool loses 1 inch of water off of its 1000ft^2 surface each week due to evaporation. The heat of vaporization for water at the pool temperature is 1050 Btu/lb. The cost of energy to heat the pool is 10.00 dollar per million BTU. A salesman claims that a 500 dol
As a result of a chemical spill, benzene is evaporating at the rate of 1 gram per minute into a room that is 6 m * 6 m * 3 m in size and has a ventilation of 10 m3/min.
a- Compute the steady state concentration of benzene in the room.
b- Assuming the air in the room is initially free of benzene, compute the time necessary fo
I have done an example to calculate the actual max efficiency of a power plant given the temperatures of both the hot and cold reservoirs. My book, however, tells me nothing about how to calculate any of the following questions.
A power plant produces 1 GW of electricity, at an efficiency of 40%.
(a) At what rate does th
