Table 1 Technical specifications of the solar-boosted biogas generation system [5, 23]
From: Maximum production point tracking method for a solar-boosted biogas energy generation system
Device | Power factors | Power generation efficiency |
|---|---|---|
Digester | \(Z_{{\text{d}}} = 0.062 {\text{K}}/{\text{W}}\) | \(Z_{{{\text{in}}1}} = 0.58 {\text{K}}/{\text{W}}\) |
\(Z_{{{\text{in}}2}} = 0.66 {\text{K}}/{\text{W}}\) | \(Z_{{{\text{in}}3}} = 0.61 {\text{K}}/{\text{W}}\) | |
\(Z_{{{\text{w}}1}} = 0.21 {\text{K}}/{\text{W}}\) | \(Z_{{{\text{w}}2}} = 0.29 {\text{K}}/{\text{W}}\) | |
\(Z_{{{\text{w}}3}} = 0.25 {\text{K}}/{\text{W}}\) | \(C_{{\text{d}}} = 0.46 {\text{kWh}}/{\text{K}}\) | |
\(C_{{{\text{s}}1}} = 10.21 {\text{kWh}}/{\text{K}}\) | \(C_{{{\text{s}}2}} = 10.92 {\text{kWh}}/{\text{K}}\) | |
\(C_{{{\text{s}}3}} = 10.18 {\text{kWh}}/{\text{K}}\) | \(C_{{{\text{w}}1}} = 5.26 {\text{kWh}}/{\text{K}}\) | |
\(C_{{{\text{w}}2}} = 5.87 {\text{kWh}}/{\text{K}}\) | \(C_{{{\text{w}}3}} = 5.09 {\text{kWh}}/{\text{K}}\) | |
\(HRT = 25\,{\text{days}}\) | \(S_{0} = 100\,{\text{kg}}/{\text{m}}^{3}\) | |
\(T_{{{\text{d}},{\text{min}}}} = 0\,^{ \circ } {\text{C}}\) | \(T_{{{\text{d}},{\text{max}}}} = 60\,^{ \circ } {\text{C}}\) | |
Solar thermal collector | \(A_{{\text{s}}} = 150 {\text{m}}^{2}\) | \(\eta_{s} = 0.65\) |
\(T_{{{\text{PT}},{\text{max}}}} = 90\,^{ \circ } {\text{C}}\) | \(V_{{{\text{PT}},{\text{max}}}} = 300 {\text{L}}\) | |
\(C_{{{\text{water}}}} = 0.0012 {\text{kWh}}/\left( {{\text{kg}}\,^{{\text{o}}} {\text{C}}} \right)\) | ||
Stratified heat storage tank | \(E_{{{\text{res}},{\text{total}},{\text{min}}}} = 0\) | \(E_{{{\text{res}},{\text{total}},{\text{max}}}} = 80 {\text{kWh}}\) |
\(V_{{{\text{res}},{\text{min}}}} = 0 {\text{L}}\) | \(V_{{{\text{res}},{\text{max}}}} = 3000 {\text{L}}\) | |