Adiabatic

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Name: MERGEN Allamiradow

Id: 1785369

Name of the experiment: Adiabatic coefficient of
gases- Flammersefeld oscillator

Section: Friday morning

Date: 26/04/2013

Group No:9

Group member: Ezgi OĞUZ

Assistant: MELIS KESIK

Calculations:
Given values:
m = 4,59•10-3 kg; V = 1,14•10-3 m3; PL = 99,56•103 kg/ms2; r= 5,95•10-3 m

tavg(gas) = (t1 + t2 + t3 + t4 + t5)/5 (sec);
tavg(CO2) = (106 + 107 + 106+ 110 + 112)/5 = 106,8 (sec.); tavg(Argon) = (105+ 100 + 97 + 100 + 99)/5 = 100,2 (sec.); tavg(N2) = (110+ 109 + 109+ 109 + 109)/5 = 109.5(sec.);

T = tavg(gas)/300;
T = tavg(CO2) /300 = 106.8/300 = 0,356;
T = tavg(Argon) /300 = 100,2/300 = 0,334;
T = tavg(N2)/300 = 109.5/300 = 0,365;

P = PL + mg/πr2 = 99,56•103 kg/ms2 + (4,59•10-3 kg × 9,8 ms2 )/(3,14×(5,95•10-3 m)2) = = 99965 kg/ms2;

Adiabatic coefficient of gases (γ): Given γ(gas) = (4mV) / (T2Pr4); γ(CO2) = (4×4,59•10-3 ×1,14•10-3 ) / (0,3562 × 99965 ×(5,95•10-3 )4) = 1,318 ; γ(Argon) = (4×4,59•10-3 ×1,14•10-3 ) / (0,3342 × 99965 ×(5,95•10-3 )4) = 1,517 ; γ(N2) = (4×4,59•10-3 ×1,14•10-3 ) / (0,3652 × 99965 ×(5,95•10-3 )4) = 1.254;

Answers to Questions:
1. Capacity to gain or absorb heat energy is defined as heat capacity of gas. 2. Rüchard’s experiment is about measurment of Y value with the help of the pressure which is exerted by certain gases such as nitrogen or carbon dioxide. When system is opened the gas is allowed to flow inside the system and it pushes oscillator upwards. The small hole at the top of system decreases inside pressure and oscillator comes back. And it goes on like this, up and down. All in all, the main principle in here is oscillation. 3. Clement-Desormes Method also used in order to measure adiabatic coefficients of gases 4. Adiabatic system is the system in wich heat exchange does not occur. that is, q = 0 Discussion:

In this experiment, I...
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