A heat pipe heat exchanger (HPHE) was used to recycle the waste heat in a slag cooling process of steel industry.
An specially designed on-line cleaning device was construed and used to enhance the heat transfer of HPHE.
The performance characteristics of a HPHE has been assessed by integrating the first and second law of thermodynamics.
The optimum operation conditions was determined by integrating the first and the second law of thermodynamics.