This practice saves a lot of money in industry, as the heat supplied to other streams from the heat exchangers would otherwise come from an external source that is more expensive and more harmful to the environment.
Ovaj princip uštedi dosta novca u industriji, pošto bi toplina dovedena ostalim strujama u izmjenivačima topline inače dolazila iz vanjskog izvora koji bi bio skuplji i štetniji za prirodu.