The effects of temperature and humidity on water loss of Epipremnum aureum and Dracaena sanderiana

With the progress of social civilization, the air conditioning systems have become essential items in life. Generally, the relative humidity setting of air-conditioners we using mostly control less than 50%. In the contrast, the average relative humidity of Taiwan is more than 70% throughout the year. So, the relative humidity setting of air-conditioners is lower than the demand which people living in Taiwan need. If we could increase the relative humidity setting of air-conditioners, then we could save much energy from waste. The objective of this study is to provide experimental data to explain the regulation of air-conditioners should be designed case by case, so that it can meet the user’s thermal comfort.
Put the Epipremnum aureum and Dracaena sanderiana into a machine that could control temperature and humidity inside the chamber. By changing the temperature and humidity, we could investigate the amount of water loss of plants. Moreover, the size of leaf area is an important factor toward the amount of water loss. Finally, we will compare the amount difference of water loss between the two plants.
The experimental results show that the amount of water loss of the two plants is proportional to temperature、humidity and the leaf area. When the plants are in the too cold condition, frostbite will occur, and affecting the amount of water loss. If people live in air-conditioned room for a long time, we should increase the rate of clothing coverage, so that we could decrease the water loss from our skin. Also, people who live in different regions have different thermal comfort range, just like that Epipremnum aureum and Dracaena sanderiana need live in warm environment. For people who live in Taiwan, the most comfortable humidity range is around 50%~70%.