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120 A COMPrEHEnSIvE GUIdE TO SOlAr EnErGy SySTEMS
FIGURE 6.9 Variations of the temperatures of the paraffin and aluminium foams in solar collector [25].
FIGURE 6.10 Variations of the heat loss coefficient of the collector [25].
Wang and Zhao [32] designed a novel lHP-based SWH system (shown in Fig. 6.13) and
established theoretical models related to the following six important heat transport ca-
pacity properties: capillary action, entrainment, viscosity, boiling, sonic, and filled liquid
