if we assume r = re then fuel cut off ratio becomes 1, which says that v3 = v2 which says that its a isochoric process, but its actually isobarric process. It must be expansion ratio not compression
A petrol engine consumes 8 litres (L) of petrol per hour and develops 25 kW of indicated power. The specific gravity of petrol is 0.75 and its lower calorific (or heating) value (LCV or LHV) is 44000 kJ/kg. Determine the actual indicated thermal efficiency of the engine. Assume the mass density of water: w = 103 kg/m3.
actualy in quetion 2 temp shoud be give but not there (quet is wrong) OR CUT OFF SCOULD be given or expansion and calculate p4 and also .....T3 temp is t3/t4 = (p3/p4)^y-1/y isentropic pvt relation we get 2030kpa oki
Dear sir.... Places help me 🙏 i can't understand area of the diagrams and cross section area of the piston definition is same..?...? And how to mean effective pressure... Pm=ip. L.A.N.n....... I know that but i can't understand how how to calculate heat energy to mechanical energy ☹️ please please help me sir 🙏🙏🙏
Sir.. can u solve any numerical, where calculate the value of MEP..( in this numerical, v1,v2,v3,v4,.... is not given, but also the comprassion and cut off ratio is given) . of diesel cycle problem?....plz sir
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If we dont know the volumes, we can use compression ratio also to find T2 in beginning
T2/T1=(V1/V2) power(gamma)
T2/T1=(r) power(gamma)
In the question, compression ratio is 5, you are using expansion ratio as 5, why?
he said lets assume bruh..
@@nayanjomi5966 what do you mean?
@@nayanjomi5966 what the hell does that even mean?
if we assume r = re then fuel cut off ratio becomes 1, which says that v3 = v2 which says that its a isochoric process, but its actually isobarric process. It must be expansion ratio not compression
Thank you sir for your efforts
why is p4=p3/compression ratio?
👍👍
Thank you, Sir!
A petrol engine consumes 8 litres (L) of petrol per hour and develops 25 kW of indicated power. The specific gravity of petrol is 0.75 and its lower calorific (or heating) value (LCV or LHV) is 44000 kJ/kg. Determine the actual indicated thermal efficiency of the engine. Assume the mass density of water: w = 103 kg/m3.
U cant take expn ratio equal to compr ratio... If that is so., then what is diff bw otto and diesel cycle....
I don't think that compression ratio is assumed to b expansion ratio
Commenting for the algorithm.
actualy in quetion 2 temp shoud be give but not there (quet is wrong) OR CUT OFF SCOULD be given or expansion and calculate p4 and also .....T3 temp is t3/t4 = (p3/p4)^y-1/y isentropic pvt relation we get 2030kpa oki
why are you using 5 as an expansion ratio? it is a compression ratio right?
Dear sir....
Places help me 🙏 i can't understand area of the diagrams and cross section area of the piston definition is same..?...? And how to mean effective pressure... Pm=ip. L.A.N.n....... I know that but i can't understand how how to calculate heat energy to mechanical energy ☹️ please please help me sir 🙏🙏🙏
Sir.. can u solve any numerical, where calculate the value of MEP..( in this numerical, v1,v2,v3,v4,.... is not given, but also the comprassion and cut off ratio is given) . of diesel cycle problem?....plz sir
thank you teacher
How to find compression ratio in desiel cycle
Bigger volume (V1)÷smaller volume (V2) or bigger pressure (P2)÷smaller pressure (p1) in isentropic compression
Sir re expansion ratio ki value kha se aayi vo tho compression ratio r ki value 5 thi ...Ap ne compression ki value expansion ratio me rak fi
sir can u plz solve numerical for me its important
Please go over again
Sir duel cycle video ready karu plzz plzz
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