    Sentence 1: About how many cabic  meters of make-up water is used by a  700-megavatt coal-fired power —_plant  For evaporative cooling hourly?    Sentence 2: Evoporative (wet)  cooling toners use the ejected heat to  evaporate water; this water    is kept separate from the condensate,  which circulates in a closed system and returns  to the boiler.    