Principles of House Design

There are differences between principles of house design for cool and for warm climates. For cool climate, the house has high-angled roof and a window under that roof. It allows direct sun into the house through the window. Thermal building materials are used in order to increase heat. At the roof and external walls, there are insulations. Insulation makes the house more comfortable by reducing the amount of warmth escaping in cool climate. It keeps the house warmer for a longer period of time. For warm climate, the house has overhanged roof in order to prevent direct sun. The material of the roof is reflective so the sun is reflected. There is external insulation at the part of the roof. It makes the house more comfortable by reducing the amount of heat entering in the day. There are two windows. A window is on the left side and another is on the right side. At day, those windows are closed and covered to prevent overheating. At night, windows are opened. They act as ventilators. So, the cool air can enter the house and the heat can remove. That’s the differences between house design for cool and warm climates.

why ITB..

I have some reasons why I decided to continue my study at ITB. I choose ITB because there is environmental technology as one of study programmes. I know that other universities like UI, UNDIP, and ITS also have that study programme but I still choose ITB because it is more comfortable than the others. It is located in Bandung which has cool air. Besides that, ITB is not too far from my house in Bekasi. Other university like UI is also not too far from my house but environmental technology in there is just opened. So, I think environmental technology in ITB is better than there. The other reason is my parents also support me to study in ITB. That’s why I chose ITB as a place to study.

Pressure compensated valve

Pressure compensated valve works in open and closed modes. In open modes, water flows to the inlet in low pressure. Because of low pressure, the piston doesn’t press the spring. So, the position of the orifice and the outlet is in open position. In closed modes, water flows to the inlet in high pressure. Because of high pressure, the spring is pressed by the piston and the position of the orifice is moved. So, the diameter of the outlet becomes smaller. In conclusion, in both of the low pressure and high pressure, the volume of the water in every second which flows to the outlet is still constant.

HOW GLASS IS MADE

Glass used in a lot of human equipments comes from raw materials which pass the making process of glass. There are three steps in making of glass. They are melting, cooling, and forming.
The first step is melting. The raw materials containing silica which is from white sand or pulverized sandstone, soda (sodium bicarbonate), and lime which is from limestone are melted together at 2600 until 2900 Fahrenheit in furnace. The temperature depends on the composition of the raw materials. This step takes about twenty four hours.
The second step is cooling. After melting, the molten glass is then cooled until several hundreds degree at which it can be shaped. It has to be worked quickly to form it into the desired shape.
The last step is forming. The glass can be formed into bottles or plates. For glass bottles, molten glass is placed in a mould. Air is blown in and then the air pressure forces the glass against the side of the mould. When the glass cools and hardens, the mould is opened and a newly-made glass bottles removed. For glass plates, the sheet of glass is rolled flat along the assembly line. After it cools, the glass is ground and polished.


CAMELIA INDAH M.
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Water

One of important needs of human is water. Water is a very important need for the human life because in daily life, everybody needs clean water for drinking, cooking, bathing, washing, and others. The sources of clean water are limited because there are a lot of water's sources which have been polluted so that it's necessary to do the water treatment process in order to fulfill the quality of clean water. Raw water which comes from ground and surface water has to pass the water treatment process such as separation and purification so that it can be distributed to the people for the daily need.

WHY ITB??

I have some reasons why I decided to continue my study at ITB. I chose ITB because there is environmental technology as one of study programmes. Besides that, ITB is the best school of technology in Indonesia which has good facilities and comfortable place for studying. The other reasons are students in ITB have great desire to study and people graduating from ITB aren’t doubted in work place. That’s why I chose ITB as a place to study.

Drawing

I don’t like drawing because of several factors. First, when I am asked to draw something, I can’t do it quickly. I need a long time to think about what things that I will draw. I often have no idea on it. Then, when I have got an idea about the things, I have difficulties to visualize my idea into a picture. I am difficult to make something into one dimension.