| Keywords |
Energy ; Underground space ; Temperature ; FDM |
| Abstract |
Our country, the world-wide 5th dignity country importing energy, imports 97% of necessary energy fromforeign nations, and this impose a heavy burden on our country. The fossil fuel which we are using will be exhaustedin future 30~40 years. And then 30~40% of our country overall energy consumption quantity is using at the house,so the countermeasure against hereupon is demanded. As the alternate energy of the fossil fuel there are atomic energy,hydrogen energy, solar energy, underground temperature energy. Atomic energy has the problem about radioactivityand nuclear wastes, also hydrogen energy has the problem of the much production cost. But solar energy and under-ground temperature energy don't need the expense in energy acquisition after the beginning invest. In addition under-ground temperature energy never product the pollutant which the fossil energy discharge. The strong point ofunderground space is able to use a warm temperature in winter and to do a cool temperature in summer. For usingthese advantages the tool is need, to analyse the temperature of underground space. In this paper FDM is adopted butthe size of ?x and ?y is different for utility. |