(Solved): An ideal Otto cycle has a compression ratio of 8 . At the beginning of the compression process, ai ...

An ideal Otto cycle has a compression ratio of 8 . At the beginning of the compression process, air is at \( 95 \mathrm{kPa} \) and \( 27^{\circ} \mathrm{C} \), and \( 720 \mathrm{~kJ} / \mathrm{kg} \) of heat is transferred to air during the constant-volume heat-addition process. Take into account constant specific heats at room temperature. The properties of air at room temperature are \( c_{p}=1.005 \mathrm{~kJ} / \mathrm{kg} \cdot \mathrm{K}, c_{V}=0.718 \mathrm{~kJ} / \mathrm{kg} \cdot \mathrm{K}, R \) \( =0.287 \mathrm{~kJ} / \mathrm{kg} \cdot \mathrm{K} \), and \( k=1.4 \) termine the pressure and temperature at the end of the heat-addition process. (You must provide an answer before moving on to next part.) e pressure at the end of the heat-addition process is: \( \mathrm{kPa} \). e temperature at the end of the heat-addition process is An ideal Otto cycle has a compression ratio of 8 . At the beginning of the compression process, air is at \( 95 \mathrm{kPa} \) and \( 27^{\circ} \mathrm{C} \), and \( 720 \mathrm{~kJ} / \mathrm{kg} \) of heat is transferred to air during the constant-volume heat-addition process. Take into account constant specific heats at room temperature. The properties of air at room temperature are \( c_{p}=1.005 \mathrm{~kJ} / \mathrm{kg} \cdot \mathrm{K}, c_{V}=0.718 \mathrm{~kJ} / \mathrm{kg} \cdot \mathrm{K}, R \) \( =0.287 \mathrm{~kJ} / \mathrm{kg} \cdot \mathrm{K} \), and \( k=1.4 \). Determine the net work output. (You must provide an answer before moving on to the next part.) The net work output is \( \mathrm{kJ} / \mathrm{kg} \) An ideal Otto cycle has a compression ratio of 8 . At the beginning of the compression process, air is at \( 95 \mathrm{kPa} \) and \( 27^{\circ} \mathrm{C} \), and \( 720 \mathrm{~kJ} / \mathrm{kg} \) of heat is transferred to air during the constant-volume heat-addition process. Take into account constant specific heats at room temperature. The properties of air at room temperature are \( c_{p}=1.005 \mathrm{~kJ} / \mathrm{kg} \cdot \mathrm{K}, c_{V}=0.718 \mathrm{~kJ} / \mathrm{kg} \cdot \mathrm{K}, R \) \( =0.287 \mathrm{~kJ} / \mathrm{kg} \cdot \mathrm{K} \), and \( k=1.4 \) Determine the thermal efficiency. (You must provide an answer before moving on to the next part.) The thermal efficiency is \( \% \) An ideal Otto cycle has a compression ratio of 8. At the beginning of the compression process, air is at \( 95 \mathrm{kPa} \) and \( 27^{\circ} \mathrm{C} \), and \( 720 \mathrm{~kJ} / \mathrm{kg} \) of heat is transferred to air during the constant-volume heat-addition process. Take into account constant specific heats at room temperature. The properties of air at room temperature are \( c_{p}=1.005 \mathrm{~kJ} / \mathrm{kg} \cdot \mathrm{K}, c_{V}=0.718 \mathrm{~kJ} / \mathrm{kg} \cdot \mathrm{K}, R \) \( =0.287 \mathrm{~kJ} / \mathrm{kg} \cdot \mathrm{K} \), and \( k=1.4 \). Determine the mean effective pressure for the cycle. The mean effective pressure for the cycle is \( \mathrm{kPa} \)