采用上述结构的本发明烟囱废气余热利用装置，具有高效利用烟囱废气余热的特点；
The stack gas residual heat utilizing device of the invention adopting the structure has the characteristic of efficiently utilizing the stack gas residual heat;
一个新的烟囱，替换了5年前那个又旧又高的，能更好地限制废气的排放。
A new smokestack, which is better able to trap emissions, replaced the older, taller one five years ago.
大气会成为我们主要的废气储存槽，是因为透过烟管、排气管与烟囱排放废气，做起来最简单，直觉上也最省钱。
The atmosphere has been our prime waste repository, because discharging exhaust up through smokestacks, tailpipes and chimneys is the simplest and least (immediately) costly thing to do.
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