mention the users of heat energy
Answers
Answer:
heater , microwave , geysers etc
Explanation:
me brainlist
Answer:
Well, firstly I suppose we should make it clear what me mean when we use the word ‘heat’. There are two possible meanings; one being that heat is energy in transit between bodies at different temperatures. The other is that heat is is the thermal energy content of a body stored in energy states that freely exchange with each other. It is this latter definition that I was taught and am familiar with. Heat transfer by various mechanisms (conduction, convection, radiation) then encompasses the first definition.
I believe heat and heat transfer are one of those things that occur all around us that we take little notice of but are essential to our lives. Remove the heat and everything stops. Our lives are literally powered by heat transferred down the thermal gradient between the Sun and the Earth. The solar photosphere radiating as a good approximation to a 5880K black body emits radiation that is readily absorbed by matter on our much, much cooler planet. This radiant energy absorbed by the Earth provides 99.99% of energy on Earth. Because of the temperature difference between the Sun and the Earth (5880K and 288K), some of the vast heat content of our star is transferred down the thermal gradient to the Earth. This energy amounts to a continuous flux of around 3000 Hiroshima bombs per second and not only maintains the heat content of the Earth, but also allows the atmosphere to have volume storing energy as gravitational potential energy in the vertical extent of the atmosphere. This energy is also stored in raised chemical energy states such as water vapour and hydrocarbons formed from more stable water and carbon dioxide. The uneven heating of the Earth (80% of absorbed energy arrives within 30deg of the seasonal equator) produces thermal gradients that drive heat fluxes poleward warming these regions and redistributing water, by a process we know as the ‘weather’.
Whenever a temperature difference exists (except the gradient set vertically by gravity) a potential arises. Spontaneous exchange then acts in a manner to reduce that potential. A warm drink in a cup brought into a cold room for instance produces a thermal gradient. Spontaneous process of heat transfer then acts to reduce the gradient and heat lost by the warm liquid by production of vapour, conduction to the air, convection of this moist air vertically and radiant losses in all directions adds to the heat content of the room such that every Joule of thermal energy lost by the drink is gained by the room. The heat transfer process alters the thermal gradient and the gradient evolves and weakens with time until the transfer process almost stop as the cup of liquid reaches room temperature. (Depending upon humidity, the liquid surface can still cool slightly due to evaporation in the same way that you might feel warm in a room if you are dry, but cold if you are wet.)
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