Question

1. Carbon dioxide GAS is compressed from 27 °C and 4.0 m3/kg to 1.0 m3/kg in a reversible and adiabatic manner (or isentropic). The temperature of the carbon dioxide after compression is a) 27 °C b) 40.3°C c) 108 °C d) 175 °C e) 927 °C Hint: use Table A-2a for specific heat ratio.

Answer 1

Hi.Here we just need to use temperature ,volume relation for isentropic process.Also we need to use a standard table for the value of specific heat ratio(k).Attaching the answers below.

Thank you.

Given Ti = 27°c 3ook. &, h.om/kg V₂ 1.0 m3/kg. At 3ook Using Ideal gas specific heats of various gases table, Ik=1.289 for CO2 for reversible Adrabatic process Tz K-1 Col) Ti V₂ 2 K-1 T Ti 2 (6) (1.289-10) (300) (4) = 447.8K. T2 = 174.8°C ? 175°c

Hence option d is the answer.