Chemical energy Electrical energy
Characteristic
Chemical reaction
-use oxidation
-supply fuels and oxygen from outside
-emission products to outside
Fossil fuel is limited
Fossil fuel is the main reason of global warming
The rate of energy dependence on imports is 96.8%
Increase energy import price by increasing international oil
2) Fuels
(1) Solid fuels: Coal and Biomass
Coalis
one
of
most
important
fuel
in
Korea
for
electricity
production
and
other
industrial uses. It consists of the remains of vegetation deposits of past geologic ages,
after subjection of biochemical actions, high pressure, temperature, and submersion. The
characteristics
of
characteristics of female consumers to enhance the understanding. Female consumers tend to be more sensitive and pickier in their tastes than male consumers when buying products. Especially when it is about buying handbags, it means a lot to women. Handbags have been considered as something that complements women’s fashion. Unlike clothing which you can change every day, handbags are purchased
③ Environmentally-responsible aviation : By March 2010, EU-based airlines must provide carbon dioxide emission reports. That’s why, over the last six months, several EU airlines have begun using bio-fuel either wholly or in part on certain routes. This trend is now spreading to North America where several airlines have indicated their interest in buying eco-friendly jet fuel.
3. History w
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
● Definition of plasma
Plasma is one of the four fundamental states of matter, along with solid, liquid, and gas. It is an ionized gas consisting of a collection of charged particles, including ions, electrons, and neutral atoms or molecules. Plasma can be found naturally in the universe in the form of stars, lightning, and auroras, but it can also be artificially created and controlled for
Introduction (What is plasma?)
1. Definition of plasma
Plasma is one of the four fundamental states of matter, along with solid, liquid, and gas. It is an ionized gas consisting of a collection of charged particles, including ions, electrons, and neutral atoms or molecules. Plasma can be found naturally in the universe in the form of stars, lightning, and auroras, but it can also be artif
I. Introduction
1. Purpose of the Project
The purpose of this our group was to analyze two similar hospitality companies by using tools learned in accounting class. Based on annual reports of two companies, our group members learned how the terms learned in class is actually used in the report. We hope to understand how certain variation affects accounting items and identify why certain does
1. Introduction of the project
1) Purpose of project
Through the project, we want to build extensive knowledge about cruise industry and accounting analysis (common size analysis, comparative analysis, and ratio analysis). We believe that the project makes us accounting experts.
Cruise Industry has grown and continues to grow enormously in scale. It is frequently regarded as a small but sig
1. 서론
1-1. Valve Characteristic Apparatus란?
밸브가 열리는 시간, 열려 있는 시간, 밸브의 개폐가 중복되는 시간 등을 제어함으로써 기관 작동효율을 향상시키는 기구 및 시스템이다.
구체적인 예를 들면 가변 밸브제어(variable valve control, VVC), 가변 밸브 액츄에이션(Variable Valve Actuation, VVA), 가변 밸브 사건(V