1·Not only will they generate electricity but the surplus heat can be used to heat the house, meaning that all the energy in gas is productively used.
它们不但能发电，其余热还可以用来为房屋供暖，意味着燃气中的所有能量都被有效利用了。
2·So we decided to transfer that surplus heat to heating network.
因此我们决定将服务器的余热转移到供暖系统中去。
3·The surplus heat in the inner zone in a building has become a problem not to be ignored in air conditioning designs.
建筑物内区余热已成为空调设计中不容忽视的问题。
4·The surplus heat is adequately used and can be recycled.
余热得到充分利用，而且可以循环利用。