イタズラな KISS ~3 ✔

Irie Yuki - 1.1

Irie Yuki 1: I Don't Have Your Phone Number

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The amounts of heat rejected by engines B and C must be the same since engines A and B can be combined into one reversible engine operating between the same reservoirs as engine C and thus the combined engine will have the same efficiency as engine C. Since the heat input to engine C is the same as the heat input to the combined engines A and B, both systems must reject the same amount of heat.

Dammit. Why am I even replaying this video tutorial again? I supposed I should have mastered it a long time ago!

Knock, Knock.

Dare ga doa o nokku shite imasu ka?

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Is it that she's here?

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"Yuki! Don't you have a plan to come out of your room? You almost spend half of the day not showing your face! Mom wondered what are you doing there! Don't tell me you already took suicide! Answer me! #$@&!?" Kotoko kept on knocking and I swear... her voice really makes my headaches.

Other than the reason that I didn't have enough sleep last night. Mattaku, why am I doing this to myself?

"Don't try to bother me, Kotoko. I'm studying." I shouted back at her.

She made a loud thug against the door again, "You don't usually study in your room! What's with you, Yuki? Maybe you've got another pimple again! You're just shy to show your face!"

Can't she get it? I don't have the energy to come out of my room! And besides, I really need to watch these videos because it's been a long time since I solved problems regarding Thermodynamics! Even though I am taking a technology course... I really need to master it! Do I really need to? Ah, wakatta! I need an excuse!

"Jigoku o damara seru! Just leave me alone!"

"Don't blame us if you rot in hell!"

Finally, she understood and went away. So, where did I stop? That baka, Kotoko doesn't have the nerve to stimulate her brain to know these kinds of stuff, that's why Konomi inherited her stupid brain because birds with the same feather flock together.

Konomi...

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Concentrate...

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Work is a more valuable form of energy than heat since 100 percent of work can be converted to heat, but only a fraction of heat can be converted to work. When heat is transferred from a high-temperature body to a lower-temperature one, it is degraded since less of it now can be converted to work. For example, if 100 kJ of heat is transferred from a body at 1000 K to a body at 300 K, at the end we will have 100 kJ of thermal energy stored at 300 K, which has no practical value.