The modern scientific name for heat is

Thermal energy is the part of the internal energy of a thermodynamic system in equilibrium that is proportional to its absolute temperature and is increased or decreased by energy transfer.

This is: physically, heat is understood as the energy that is transferred from one system to another or from one body to another, and this is a transfer linked to the movement of molecules, atoms and other particles.

In this context, it is important to keep in mind that bodies have no heat, bodies have internal energy. When a part of this energy is transferred from one system or body to another that is at a different temperature, we talk about heat.

So, the transfer of heat will occur until the two systems are placed at the same temperature and the so-called thermal equilibrium is reached.

-first use of geothermal energy occurred more than 10,000 years ago in north america by american paleo-indians

-the first industrial use of geothermal energy began near pisa, italy in late 18th century

-in 1904, italian scientist piero ginori conti invented the first geothermal electric power plant in which steam was used to generate the power

-with the above experiment, the first geothermal plant in usa started in 1922 with a capacity of 250 kilowatts

-however, in 1946 first ground-source geothermal heat pump installed at commonwealth building in portland, oregon

-during the 1960’s, pacific gas and electric began operation of first large scale geothermal power plant in san francisco, producing 11 megawatts

-in 1973, when oil crisis began many countries began looking for renewable energy sources and by 1980’s geothermal heat pumps (ghp) started gaining popularity in order to reduce heating and cooling costs

-as effect of climate change started showing results, governments of various countries joined hands to fight against it, for which kyoto protocol was signed in japan in 1997, laid out emission targets for rich countries and required that they transfer funds and technology to developing countries, 184 countries have ratified it

hope this

k2s for potassium sulphide