In the membrane module, only half of the useful heat was actually used to transport water across the membrane and the remainder was lost by conduction in the membrane.
According to Mr. Lochbaum and to data from the Nuclear Regulatory Commission, the problem involves 69 plants of a design called pressurized water reactors, in which the water that is used to carry off the useful heat, and to keep the fuel from over-heating, is kept at a pressure of about 2,200 pounds per square inch.
The present type of storage is capable of re-using waste heat from cogeneration system to produce useful heat for space heating.
Furnace, structure in which useful heat is produced by combustion or other means.
Cows give off a lot of body heat so would feasibly be another useful heat source, but they do need feeding.
Traditional boilers are highly efficient at generating heat within the home, with more than 90% of the energy in the fuel converted into useful heat.
Inside one of these solar thermal systems "is what I like to call a sun sponge or the absorber, the part that inverts the irradiance of the sun into useful heat".
You don't need special geological hotspots, because the ambient UK ground temperature, of 10-14C, is fully capable of permitting space heating and cooling using an elegant device called a heat pump, which lifts the temperature of the heat being extracted, and consumes only a quarter of the energy that it provides as useful heat.
The finish can be perfected and it has useful heat conductance properties.
CombinedHeatPower Heat engine or power station generating electricity and useful heat at the same time.
Figure 5 indicates useful heat gained by the water flowing through the receiver throughout the day.
