surplus heat utilization

例句：

1. 1. The factoryuses waste heat to generate electricity.
   工厂使用余热来发电。
2. 2. The solar panels capture the surplus heat from the sun and convert it into usable energy.
   太阳能板捕获太阳的余热并将其转化为可用的能量。
3. 3. The company aims to improve its efficiency by optimizing the use of surplus heat.
   公司希望通过优化余热的使用来提高其效率。