Heat capacity is a widespread property of a matter. In other words its worth varies depending on how much matter is present (Jorgensen, 2011). What are the various sources of heat?

The sun is an element of the solar system. Therefore, it is a natural source of heat energy. Sunlight is significant for the survival of all living things. This type of heat energy is also known as solar energy.

The heat energy that is obtained from the Earth is known as geothermal energy. Sustainable and unsoiled geothermal energy can be obtained from the hot water and rocks that are located in the shallow ground. It is also located in the molten rocks obtainable in the farthest deepness of the Earth.

The air is an extremely ordinary source of heat energy for heat pumps. Exhaust air is also a superior heat source for heat pumps in structures, both commercial and residential.

Heat energy can be made by the burning of fuels. Fuel can be described as any flammable matter that can burn and supply energy. A few examples of fuels are wood, coal, charcoal, gasoline, kerosene and oil.

Electricity is a type of energy that can be transformed into heat energy; therefore, it's thought to be a source. An example is a clothes iron that utilizes electrical energy in order to make heat.

Waste heat recovery is a procedure in which heat energy that is surplus for certain industrial procedure is diverted to use in other work applications. Waste heat recovery boilers are utilized to channel this surplus heat into other practical work areas. .

Waste or sewage water...

Untreated and treated water from sewers and industrial waste water and condenser heat that are produced from refrigeration plants are utilized in creating electricity and other manufacturing procedures.
References

Charmaine, Mike. (2010). What Are the Sources of Heat Energy? Retrieved January 27, 2011,

from eHow Web site: http://www.ehow.com/list_6038161_sources-heat-energy_.html

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Heat and Temperature. (n.d). Retrieved January 27, 2011, from Web site:

http://zonalandeducation.com/mstm/physics/mechanics/energy/heatAndTemperature/heatAndTemperature.html

Jones, Andrew Zimmerman. (2011). Introduction to Heat Transfer - How Does Heat Transfer?

Retrieved January 27, 2011, from Answers Web site:

http://physics.about.com/od/thermodynamics/f/heattransfer.htm

Jorgensen, Matthew R. (2011). Retrieved January 27, 2011, from eHow Web site:

http://www.ehow.com/about_5087698_definition-heat-capacity.html

Sullivan, Gavin and Edmondson, Campbell. (2008). Retrieved January 27, 2011, from Web site:

http://ceaccp.oxfordjournals.org/content/8/3/104.full.pdf

What is Temperature? (n.d.). Retrieved January 27, 2011, from Web site:

http://coolcosmos.ipac.caltech.edu/cosmic_classroom/light_lessons/thermal/temperature.

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