Rankine cycle
In a real Rankine cycle, the compression by the pump and the expansion in the turbine are not isentropic. In other words, these processes are non-reversible and entropy is increased during the two processes. This somewhat increases the power required by the pump and decreases the power generated by the turbine.
In particular the efficiency of the steam turbine will be limited
cycling efficiency is nearly 100% over 10 cycles
Meaning: Highly reversible conformational transition is expected
Presence of the fullerenes actually improved the cycling efficiency !
Aggregation problem
Each unit is small (DNA size) Lots of hybrids in a system coordination may be difficult
Limitations when applied in vivo
Electricity supply is required
■들어가기 전
국경선은 이제 더 이상 기업의 경영활동을 방해할 수 만은 없게 되었다. 세계경제가 개방화되고 전례에 없었던 무한경쟁의 시대를 맞이함에 따라 기업들은 전세계, 모든 시장을 대상으로 치열한 경쟁을 벌이게 된 것이다. 국경을 넘어서 현지시장에서 자사의 물건을 생산 또는 판매하
1부. 해외직접투자
1. 해외직접투자의 개념과 특징
(1) 개념
1) 해외직접투자와 해외간접투자
해외직접투자(foreign direct investment)는 일반적으로 해외간접투자(international indirect investment)와의 비교에 의한 상대적 개념으로 정의된다. 즉, 해외직접투자나 해외간접투자는 국제간의 자본이동이라는 측면에
What is Bioenergy?
Bioenergy is renewable energy made available from materials derived from biological sources. Biomass is any organic material which has stored sunlight in the form of chemical energy. As a fuel it may include wood, wood waste, straw, manure, sugarcane, and many other byproducts from a variety of agricultural processes.
So, Why do we produce Bioenergy?
One reason governments