Find the amount of heat that will release 14 kg of centigrade water vapor during
September 25, 2021 | education
| Find the amount of heat that will release 14 kg of centigrade water vapor during condensation and cooling to 30 degrees.
Data: m (mass of centigrade water vapor) = 14 kg; t1 (initial temperature of water vapor) = 100 ºС; t2 (temperature to which the steam will be cooled) = 30 ºС.
Constants: L (specific heat of condensation) = 2.3 * 10 ^ 6 J / kg; C (specific heat of water) = 4200 J / (kg * K).
The amount of heat that water vapor will release: Q = Q1 + Q2 = L * m + C * m * (t1 – t2) = 2.3 * 10 ^ 6 * 14 + 4200 * 14 * (100 – 30) = 36316000 J ≈ 36.3 MJ.
Answer: During condensation and cooling of water vapor, 36.3 MJ will be released.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.