Liquefied natural gas (LNG) is transported in very large tankers, stored as liquid in equilibrium with its vapor at approximately atmospheric pressure. If LNG is essentially pure methane, the storage temperature then is about 111.4 K, the normal boiling point of methane. The enormous amount of cold liquid can in principle serve as a heat sink for an onboard heat engine. Energy discarded to the LNG serves for its vaporization. If the heat source is ambient air at 300 K, and if the efficiency of a heat engine is 61% of its Carnot value, estimate the vaporization rate in moles vaporized per kJ of power output. For methane, AH = 8.206 kJ-mol™ ¹. The vaporization rate in moles vaporized per kJ of power output is mol-kJ1

Thermodynamics question

Air contained in a piston-cylinder assembly undergoes the power cycle shown in the figure below. 4.5 P (bar) 1.2 0 n = i 3 1.0 v (m³/kg) Isothermal process % 4 2 Assuming ideal gas behavior for the air, evaluate the thermal efficiency of the cycle. 3.75 O

Please show the outright and legible answers/solutions. Thermodynamics  Ideal Gas Sulphur dioxide is circulated as refrigerant in a small refrigerator. SO2 gas at a pressure of 5 bar and temperature 340 K is to be cooled at a constant volume of 0.142 m3, to 293 K as part of the refrigeration cycle. Calculate (a) The heat liberated, (b) The work done by the gas on cooling, (c) The final pressure attained on cooling and(d) The change in enthalpy.Sulphur dioxide may be treated as an ideal gas. The specific heat (J/mol K) is found to vary with temperature (K) according toCP = 25.736 + 5.796 X 10-2 T – 3.8112 x 10-5 T2 + 8.612 x 10-9 T3

Part b please!