3/17 week 4 day 1 Entropy and different cycles.

today in class, we continue to learn the different cycles.

when we put it on the hot water, this equipment begins to go up and down.  but when we cool down the bottom of it and pour ice water on it, it starts to go down and up.

then we use the equation: e=1-T_c/T_h  to find its efficiency.

in this photo, we start to learn how to find the cop(coefficient of performance) and we use the cop to find the total heat we use. 

in these photos, we find the second law efficiencies of the heat engine. We should find the Actual output of enerhy desired and Maximum output of energy by reversible process.

in these two photos, we know how to find the final temperature when we know that the reversile process is also constant.

Then we compare the efficiency of carnot cycle and efficiency of reversubke process.

 in this photo, we find the Q_H by using EQUATION:W=Q_H- Q_c

then we did an experiment about bubbles. when we make bubbles by air, they will fall down. but when we use nature gas, it will go up. 

When we fire the bubbles, it burns the whole outside that we can see from the video. 



conclusion:

Today in class, we learn different cycles. the different cycles have different efficiency. The entropy of a system is measured as the amount of disorder in a system. we learn how to find the cop.we compare the efficiency of carnot cycle and efficiency of reversubke process.