Explain how moisture affects γ (the ratio of heat capacities Cp/Cv)
.4 Recall that the adiabatic index is the ratio of the heat capacities at constant pressure and at constant volume. Show that, for an ideal classical gas, the critical temperature gradient for the onset of convection (3.23) can be written as dx con where Cp is the thermal capacity per unit mass at constant pressure and g is the acceleration due to gravity. (Note that if the thermal capacity is high because of the absorption of heat by the excitation...
4. [After Reif Problem 5.1] When an ideal gas undergoes an adiabatic (thermally insu- lated) quasi-static expansion, its pressure and volume are related by p = constant. where γ = cp/cv is the ratio of heat capacities. If the gas expands from an initial volume Vi at temperature T to a final volume V2, calculate the final temperature T2 in terms of γ, Vi, Ti, and ½.
the Koppisch equation of state is defined as P(Vm-Ak)=RT. Determine how Cp and Cv are related for Koppisch gas (that is, determine Cp-Cv).
1. a 10 mol sample of ideal gas whose heat capacities are Cv= 20.8 J/K Mole and Cv = 29.1 J/K Mole a. Undergoes a reversible constant volume cooking from 49.3 L, 300 K, and 5.00 atm to 150 K. Calculate q, w, and ΔU. b. the same gas then underwent a reversible constant pressure expansion from 150 K and 2.50 atm to 98.6 L. Calculate q , w, and ΔU. You'll need the ideal gas law to calculate T-final...
6) Describe what is meant by as-received, moisture-free, and moisture-and ash- free heat value? How are these calculated?
Using the Aggregate Demand/ Aggregate Supply Model, explain how lowering the reserve ratio affects the economy.
Two moles of a monatomic ideal gas ( CV = 3R/2; CP = 5R/2) are used as the working substance for a heat engine whose cycle is depicted in the Ögure. The path bc is isothermal. In each part below explain the reasoning behind your calculations if necessary. (P0 =1.11 x 105 N/m2; V0 = 4.5 x 10-2 m3) (a) Determine Ta. (b) Determine Tb = Tc. (c) Determine Wab. (d) Determine Qab. (e) Determine Wbc. (f) Determine Qbc. (g)...
Calculate without constant specific heat (Cp). An air-standard dual cycle has a compression ratio of 14 and cut-off ratio of 1.2. The pressure ratio during constant volume heat addition is 1.5. Determine the: (A) Thermal efficiency (B) Amount of heat added (C) Maximum gas pressure and temperature when the cycle is operated at 80kPA and 20°C at the beginning of the compression.
Find how the heat capacity CV varies with changing volume at constant temperature.
Find how the heat capacity CV varies with changing volume at constant temperature.