Tuesday, December 8, 2009

Ventilation System of Tropical House

Tropical houses are different from European houses. In cold region, houses must have good insulation to keep the indoor temperature warm during cold or winter season. Most of the houses in the sub-tropic or polar region have wood or gas stoves installed to keep warm temperature in the rooms. The case is different for tropical houses, ventilation system plays very important role in controlling the temperature of the rooms. In tropical region, sun shines all year long. The humidity is very high. Tropical houses need to have large openings such as windows and holes above doors to let the air circulate freely in and out of the houses.
Besides providing many jalousie windows, some house owners install the roof ventilators which will turn and suck the cool air into roof to cool the houses from above. City dwellers that install Air Conditioning Machines at their houses usually cover the ventilation windows and holes with transparent plastic sheets to keep the inside temperature of their houses cool. But this practice is considered not healthy because  new or fresh air cannot enter the houses.
Many tropical house owners grow trees and flower plants at the front or beside their houses to filter air and harness fresh oxygen produced by the trees to directly enter the houses during the day. This is one of the best natural ventilation systems that integrates trees as air filter and cooler. It can reduce the cost of electricity spent for operating artificial exhaust fan or Air Conditioning (AC) machines.
Although tropical houses need to have large window openings, they also need to be closed at nights to prevent mosquitoes from entering the houses. When the glass windows are closed, the air will still circulate through air holes located above the windows that are covered with mosquito nets. It means the fresh air can enter the house but the mosquitoes can't. by Charles Roring in Manokwari of Papua island.