2.2. Design of the WHED
As a heat exchanger to recover waste heat from the SDW, the
WHED mainly consisted of three components: water pre-heated
tubes, refrigerant tubes, and a shell. Fig. 2(a) shows the detailed
structure of the WHED and the picture of the WHED is presented
in Fig. 2(b). The water pre-heated tubes and the refrigerant tubes