To perform such a heat exchanger in some cases it is necessary to perform very large earth-moving excavator digging up a large part of the plot .
Upang gawin tulad ng init Exchanger sa ilang mga kaso na ito ay kinakailangan upang maisagawa ang napakalaking earthmoving maghuhukay paghuhukay up ng isang malaking bahagi ng isang lagay ng lupa .