A 100 MW power plant uses the lake water at 20°C to condense the steam in a boiler operating at 800°C. What will be the minimum heat that accumulates in the lake as a result of this process? This type of heat build-up is known as thermal pollution and can make water unsuitable for many aquatic organisms. Assume that this process is carried out in a lake containing 6.0 x 109 m3 water. If the heat capacity of water is 4.184 J / g K, calculate the increase in temperature in one day?
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
A 100 MW power plant uses the lake water at 20°C to condense the steam in a boiler operating at 800°C. What will be the minimum heat that accumulates in the lake as a result of this process? This type of heat build-up is known as thermal pollution and can make water unsuitable for many aquatic organisms. Assume that this process is carried out in a lake containing 6.0 x 109 m3 water. If the heat capacity of water is 4.184 J / g K, calculate the
increase in temperature in one day?
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