Sentences with phrase «constant volume of water»

In order to maintain a constant volume of water in the reservoir, outside water must be used.

Not exact matches

Btu per cubic foot: The total heating value, expressed in Btu, produced by the combustion, at constant pressure, of the amount of the gas that would occupy a volume of 1 cubic foot at a temperature of 60 degrees F if saturated with water vapor and under a pressure equivalent to that of 30 inches of mercury at 32 degrees F and under standard gravitational force (980.665 cm.

It is easy to calculate the time constant of the decay rate of the extra volume, because that is in linear ratio with the increase in height of water in the tank, and we know the extra outflow at the measured increase.

In all of these simple models, we assume the atmosphere to have a volume as fixed as a bathtub, we assume that the atmosphere / ocean system is a closed system, we assume that the incoming radiation from the Sun is constant, we assume no turbulence, we assume no viscosity, we assume radiative equilibrium with no feedback lag, we take no account of water vapor flux assuming it to be constant, no change in albedo from changes in land use, glacier lengthening and shortening, no volcanic eruptions, no feedbacks from vegetation.

The value of approximately 2 calories which is given in the second volume of the Annals of the Astrophysical Observatory of the Smithsonian Institution is to all intents and purposes the same as that of Pouillet; for if the positive corrections which are known to be required for the latter, on account of the defects of the water pyrheliometer, are applied, we shall have a value of the solar constant differing very little from that which is now offered to us as an improvement on Langley's result, but which is quite the reverse.