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Presentation transcript:

Welcome

Thermodynamics Feedback What is the isobaric process? What happened in case of adiabatic expansion ?

Heat engine and Carnot engine Thermodynamics Today’s class Lesson Heat engine and Carnot engine

Thermodynamics Heat Engine The engine which transfer heat energy into mechanical energy is called heat engine

Thermodynamics Heat Engine

Thermodynamics Heat Engine

Heat Engine Thermodynamics n= (T1 - T2 )/ T1 ×100% Again in case of heat engine absorbing or releasing heat Q is directly proportional to temperature T i.e., Q1/T1= Q2/T2 Or, Q2/Q1 = T2 /T1 But n = 1- Q2/Q1 Therefore, n = 1- T2 /T1 n= (T1 - T2 )/ T1 n= (T1 - T2 )/ T1 ×100%

Carnot engine Thermodynamics The process for giving clear explanation about transformation of heat energy into mechanical energy Frence Engineer Sadi Carnot imagined an ideal heat engine which is called Carnot engine.

Carnot engine Thermodynamics There are four parts in a Carnot engine. These are: Reservoir (source) of heat Working substance with cylinder and piston Cold reservoir or Sink or Condenser Non conductor substances

Thermodynamics Carnot engine

Thermodynamics Home Work 1. What is the efficiency of a heat engine? 2. How many parts are there in a Carnot engine? What are they?

Thermodynamics Evaluation 1. What is the efficiency of a heat engine? 2. How many parts are there in a Carnot engine? What are they?

Thermodynamics ?

Home work Thermodynamics 1. The efficiency of a heat engine is 80%. If the temperature of the sink is 1270c, what is temperature of the source? 2. Write down 10 MCQ on today’s topics

Thanks