2016年9月11日星期日

Week8 pre-session activity: reflection of Rainwater Harvesting System

Creating a rainwater collection system in house is interesting and creative, so some people make this system.
Rainwater collection system is to collect rain and then filter it so that it can up to standard. There are four processes to collect rainwater. Firstly, Rainwater is preprocessed to ensure that the quality of rainwater. Secondly, using water storage module which is safe to effectively ensure the water quality. By controlling the pump pressure and rain controllers, it is easy to show real condition in rainwater tanks and transport water.
Rainwater collection system is energy-efficient, environmental friendly, and also when there are drought and emergency situations such as fire, it can be useful to provide some water. Additionally, it can be used in daily life to save water and reduce the cost of water treatment.

However, there are some disadvantages. Firstly, I think this method can only meet the demand of several families because like solar energy, rain is intermittent. Secondly, from my another course, I find greenhouse gas emission of this system is higher than that of desalination by using Gabi software. Therefore, in my opinion, this method is suitable for separate house.

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