## 3 Results
### The Influence of Ambient Temperature Level on the Results  
The present section aims to provide information about the influence of the ambient temperature on the unit performance. The ambient temperature is studied in the range from 0 \({}^{\circ}\)C to 40 \({}^{\circ}\)C, with the assumption that the cogeneration scenario concerns cases with ambient temperatures up to 20 \({}^{\circ}\)C and the trigeneration scenario concerns ambient temperatures above 20 \({}^{\circ}\)C. This is a valid assumption because the cogeneration design is appropriate for winter, while trigeneration is suitable for summer when there are greater cooling needs. In this section's analysis, the high heating temperature is selected at (\(T_{heat,h}\) = 115 \({}^{\circ}\)C), which is a reasonable value according to the Section 3.1 analysis. Figure 9 depicts the electricity production from the ORC, while Figure 10 shows the respective thermodynamic efficiency of the cycle. Higher ambient temperature reduces both the electricity production and the efficiency, reasonable results are justified by the decrease in the turbine expansion ratio due to the higher condenser temperature. The cogeneration scenario has high-temperature heat input at 150 kW, while the trigeneration scenario is at 100 kW, justifying the higher electricity recovery from the ORC. Figure 10 shows that the efficiency of the ORC is approximately a linear function of the ambient temperature. The next studied parameter is the exergetic efficiency for the studied cases and for different ambient temperatures. Figure 11 illustrates the exergy performance of the system; it is obvious that the rise of the ambient temperature reduces the exergy performance of the studied configuration. For the cogeneration scenario, the exergy efficiency ranged from 43.13% to 46.47%, while for the trigeneration scenario the range was from 43.03% to 45.03%. Figure 12 exhibits the system energy efficiency for the respective cases. The higher ambient temperature leads to higher performance, a result that contrasts the findings of the exergy efficiency. This result is a reasonable result because the present system operates mainly as a heating heat pump because it takes heat from the ambient and thus higher ambient temperature levels makes the intermediate compressor to consume lower amounts of electric power. In the trigeneration scenario, the energy efficiency ranged from 296.40%  
\begin{table}
\begin{tabular}{c c c} \hline \hline \multirow{2}{*}{**Parameters**} & \multicolumn{2}{c}{**Scenarios**} \\ \cline{2-3}  & **Trigeneration** & **Cogeneration** \\ \hline \(Q_{cool}\) (kW) & 100 & 0 \\ \(Q_{heat,m}\) (kW) & 100 & 150 \\ \(Q_{heat,h}\) (kW) & 100 & 150 \\ \(T_{tan}\) (C) & 25 & 10 \\ \(T_{heat,h-opt}\) (C) & 115 & 125 \\ \(P_{d,in}\) (kW)  
to 325.84%, while the cogeneration scenario range was from 166.51% to 211.74%. These values are greater than 100% because the system works mainly as a heat pump which is not restricted by the limit of 100%. Figure 10: The impact of ambient temperature on ORC efficiency for both trigeneration and cogeneration scenarios. Figure 9: The impact of ambient temperature on ORC electricity production for both trigeneration and cogeneration scenarios. Figure 11: The impact of ambient temperature on system exergy efficiency for both trigeneration and cogeneration scenarios. Figure 12: The impact of ambient temperature on system energy efficiency for both trigeneration and cogeneration scenarios. The last examined parameter in this section is the heat input from the ambient to the system. Figure 13 depicts the heat quantities that the system absorbs from the ambient in order to produce the heating products. Higher ambient temperature levels cause the heat input in the system to be higher, a reasonable result in accordance with the aforementioned analysis. The heat input in the system is greater for the cogeneration scenario compared to the trigeneration scenario because in the trigeneration case there is also input in the system from the cooling production.