The phrase "amount of heat needed" is correct and usable in written English.
It can be used in contexts related to science, engineering, cooking, or any situation where a specific quantity of heat is required for a process or reaction.
Example: "To achieve the desired temperature for the reaction, we must calculate the exact amount of heat needed."
Alternatives: "quantity of heat required" or "heat energy necessary".
Some of the most significant benefits would come from reducing the amount of heat needed in homes and busineses.
Vacuum hoses were installed to pull moisture from potato slices, both to recapture the water and to reduce the amount of heat needed to cook the potato chips.
But aluminium has a fairly low melting point and its oxide can be dissolved in a substance called cryolite that also has a low melting point, so the amount of heat needed is manageable.
If heat is added to a gas confined at constant volume, the amount of heat needed to cause a one-degree temperature rise is less than if the heat is added to the same gas free to expand (as in a cylinder fitted with a movable piston) and so do work.
CP is the amount of heat needed for a temperature change of 1 K.
The amount of heat needed to produce 1 KWh of electricity is the heat rate of the process.
"Melt water refreezing releases heat into the snow at depth, reducing the amount of heating needed for melt to start and forming ice layers that can help melt water run off the ice sheet earlier with climate warming," Jason Box of the Geological Survey of Denmark and Greenland said in the update.
To get the water back off the material, as cool vapour, only a small amount of heat needs to be applied to the solid.
In the very hot environment, the system requires relatively high generator temperature, thus a flat plate solar collector is not economically competitive because the high amount of auxiliary heat needed to boost up the generator temperature.
Such a process is reversible because only an infinitesimal amount of heat is needed to change its direction from progressive freezing to progressive thawing.
This study showed, temperature had significant effects on rate of the development on Chrysomya albiceps and Calliphora vicina and the amount of heat energy needed to development for these species is specific.
