Ten solar water heating panels are positioned along the length of a roof, covering the surface...

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Ten solar water heating panels are positioned along the length of a roof, covering the surface of the roof completely. Each panel is 0.5 m in length. Air flows parallel to the roof along the length of the solar panels, as shown in the figure below. Air flow Panel 1 Panel 2 Panel 3 Roof 0.5 m etc... Panel 10 For this situation, the local heat transfer coefficient has been empirically found to be h = 8.845x -0.5 when the flow is laminar, and h = 49.75x -0.2 X when the flow is turbulent. Transition from laminar to turbulent flow is assumed to occur at a critical Reynolds number of Re = 5x 105. For the given air flow conditions, the viscosity is = 18.2x 10-6 Pa.s, the density is p = 1.1 kg/m, cr the specific heat capacity is c = 1.005 kJ/kgK, the thermal conductivity is k = 0.024 W/mK, and the temperature is P T = 300 K. The air velocity is u = 4.0 m/s. Assume that the water in each panel is at the same constant temperature of 00 00 T = 350 K. W b) What is the average Nusselt number for the whole roof? Give your answer to 2 significant figures: a) Which panel will suffer from the highest total convective heat loss to the surrounding air? Give the number of the panel (e.g. 1 for panel 1, etc): Ten solar water heating panels are positioned along the length of a roof, covering the surface of the roof completely. Each panel is 0.5 m in length. Air flows parallel to the roof along the length of the solar panels, as shown in the figure below. Air flow Panel 1 Panel 2 Panel 3 Roof 0.5 m etc... Panel 10 For this situation, the local heat transfer coefficient has been empirically found to be h = 8.845x -0.5 when the flow is laminar, and h = 49.75x -0.2 X when the flow is turbulent. Transition from laminar to turbulent flow is assumed to occur at a critical Reynolds number of Re = 5x 105. For the given air flow conditions, the viscosity is = 18.2x 10-6 Pa.s, the density is p = 1.1 kg/m, cr the specific heat capacity is c = 1.005 kJ/kgK, the thermal conductivity is k = 0.024 W/mK, and the temperature is P T = 300 K. The air velocity is u = 4.0 m/s. Assume that the water in each panel is at the same constant temperature of 00 00 T = 350 K. W b) What is the average Nusselt number for the whole roof? Give your answer to 2 significant figures: a) Which panel will suffer from the highest total convective heat loss to the surrounding air? Give the number of the panel (e.g. 1 for panel 1, etc):