An air-standard dual cycle has a compression ratio of 20 and a cutoff ratio of 1.3. The pressure ratio during the constant-volume heat addition process is 1.2. This cycle is operated at 14 psia and 70°F at the beginning of the compression. Calculate the exergy that is lost each time the cycle is repeated. The surroundings are at 14.7 psia and 70°F. The source temperature is the same as the maximum cycle temperature, and the sink temperature is the same as the minimum cycle temperature. Use constant specific heats at room temperature.