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The concept is frequently applied in physical sciences to e.g. chemical reactions, where chemical bond energy is converted to thermal energy (heat).
Additional recommended knowledge
Endothermic, also known as endergonic, refers to a transformation in which a system receives heat from the surroundings:
When the transformation occurs at constant pressure:
and constant volume:
If the surroundings do not supply heat (e.g., when the system is adiabatic), an endothermic transformation leads to a decrease in the temperature of the system.
Some examples of endothermic processes are:
Implications for chemical reactions
Chemical endothermic reactions need heat to be performed. In a thermochemical reaction that is endothermic, the heat is placed on the reactants side (heat is necessary for and absorbed during the reaction).
Applications of endothermic processes
Endothermic materials in passive fire protection
Endothermic substances, both natural, e.g. gypsum, and synthetic, e.g. resin-based intumescents, are popular for use in heatshielding, ablation, materials in space physics, fireproofing, e.g. fire-resistive coatings for LPG vessels, and compartmentalisation of fire in buildings, which is the cornerstone of passive fire protection. Typically, the technological basis is the conversion of hydrates, or chemically bound water into vapour, or steam.
Categories: Chemical reactions | Thermodynamics
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Endothermic". A list of authors is available in Wikipedia.|