Physical System Description

The physical system of SWHS, as shown in Fig:Tank, includes the following elements:

PS1: Tank containing water.

PS2: Heating coil at bottom of tank. (\({q_{\text{C}}}\) represents the heat flux into the water from the coil.)

PS3: PCM suspended in tank. (\({q_{\text{P}}}\) represents the heat flux into the PCM from water.)

Solar water heating tank, with heat flux into the water from the coil of \({q_{\text{C}}}\) and heat flux into the PCM from water of \({q_{\text{P}}}\)

Figure: Solar water heating tank, with heat flux into the water from the coil of \({q_{\text{C}}}\) and heat flux into the PCM from water of \({q_{\text{P}}}\)