The human race has been able to use up a great portion of the natural resources of the earth and has proceeded to pollute the air we breathe and (according to the experts) burn a hole in the ozone layer in the over use of Chlorofluorocarbons (CFC’s) which many cause global warming. Conventional air conditioning is one of the major contributors of CFC’s into the atmosphere. An alternative type of cooling, which does not expel CFC’s is highly desirable as one important step in the correction of this problem. So, this is why adiabatic cooling is environmentally friendly because it is a passive cooling method that does not expel CFC’s. It is 100% fresh air-cooling which even helps to clean the air it cools. (Premier Industries Inc., 1996)

          Adiabatic cooling is the use of adiabatic process to cool the air passing through a wetted cooling media or a spray of water. The ancient Egyptians hung wet mats in their doors and windows, and wind blowing through the mats cooled the air – the first attempt at air conditioning. This basic idea was refined through the centuries: mechanical fans to provide air movement in the 16^th century, cooling towers with fans that blew water-cooled air inside factories in the early 19^th century, swamp coolers in the 20^th century. Modern technology has dramatically increased the efficiency and effectiveness of adiabatic cooling. (WESCOR, 1992)

          Adiabatic saturator are good for those who wants cost cutting budgets because it is designed without a refrigerant, condenser, pressurized pipes to provide comfort cooling, not only the materials are cheap but lesser energy consumption. Another is it uses 100 % fresh air so it is healthy because it brings in outside air and exhaust stale air, smoke, odors and germs. It helps maintain natural humidity levels, which benefits both people and furniture and cuts static electricity. Lastly, it does not need an air-tight structure for maximum efficiency, so building occupants can open doors and windows.

          The purpose of this study is to evaluate the effectiveness of the adiabatic saturator. It uses water as the cooling agent. This study analyzes the falling of temperature as the unsaturated air passes the spray of water and leaving as a saturated air with a lower temperature comparing to the temperature when it enters the adiabatic saturator. This study is done with proper apparatus to get the total temperature reduction.

1.1            Statement of the Problem

          Considering Philippines as a tropical country with a high humidity temperature, with poor economic status, the use of adiabatic can help to reduce energy consumption that helps the consumer and commercials achieve a cooling comfort at an economic, effective, environmentally friendly and healthy. This is main basis why adiabatic saturator is constructed.

1.2            Significance of the Study

          In a large number of industries it is normal in hot weather to experience increased heat-related illness, lower productivity and increased absenteeism among workers. Many of these industries cannot afford the tremendous costs of conventional mechanical air conditioning, while they can afford adiabatic cooling. Adiabatic cooling can alleviate this heat problem and contribute to worker efficiency with improved morale. If the heat problem is not alleviated, increased absenteeism, high labor turnover and dangers to health and safety during the summer months and production may then declines.

1.3            Objectives of the Study

          The main objective of the study is to achieve adiabatic cooling through adiabatic process. The following are used to evaluate if adiabatic cooling can be achieved through the use of adiabatic saturator:

1.       Evaluate the performance of the adiabatic saturator in terms of how long it takes to achieve comfort cooling.

2.       Take temperature of the unsaturated air and saturated air.

3.       Compare temperature for five hours.

1.4            Scope of Limitations

          The study of adiabatic saturation process deals with the construction and evaluation of the adiabatic saturator. It is more focused on whether it can provide cool air. It determines the temperature of the entering air and the temperature of the air as it leaves the saturator. Water is used as the raw material being the cooling agent.