Rain water harvest

Rain water harvesting is one thing that can create a substainable house.


In fact, I have seen a temple in Singapore, that does micro hydro electricity plant inside its own 4 storey high building.



For Drinking water: water is collected from the rooftop via special rain collection drainage system, whereby the water will flow from the rooftop to the underground filtration tank, and through reverse osmosis create drinking water. create water for the dripping system in the garden. become the source for a manmade waterfall.



For Hydro electricity, we do remember the rainwater are collected from the roof top, so while the water is gathered, and flow towards the underground filtration chamber. A hydrodynamo is situated. whereby water will be channel to generate hydroelectricity.... If this water source depends on rainfall only, the electricity supply will be unreliable. Thus solar energy is harvest via solar panel, and wind energy is harvest via wind turbine at the roof top. These electricity generated at the roof top are used to pump the water up to the 400 feet again, and allow them to fall to the hydrodynamo...



Interesting concept. becos when they fall manmade waterfall is made, creating a continuous cycle of water source for the manmade waterfall.


http://www.re-energy.ca/t-i_waterbuild-1.shtml

In my opinion, the future here lies in individual water collection and potabilization - per house or apartment. Francis' system sounds interesting, and inddeed the buzz word "hi-tech" is important or even crucial.

One system I heard about converts harvested rain water into hydrogen and oxygen (via electrolysis). That leaves all impurities behind. The gas is also used to provide pressure to the obtained water, as it occupies hundreds of times the volume of water. Then the gas is burned and part of the "invested" energy is recovered. Though the initial energy to split the water molecules comes from solar cells.

The description offered by the inventor was quite cryptic, so I can't tell more about this system.

Quoting from [germex]:

In my opinion, the future here lies in individual water collection and potabilization - per house or apartment. Francis' system sounds interesting, and inddeed the buzz word "hi-tech" is important or even crucial.

Quoting from [cyber chap]:Hi Grandpa and Frank



Your inputs are quite good. Grandpa,  Have you ever promoted rain water harvest in the arid region of your country? In our state (a Province of India) , there is a compulsory legislation to provide water harvesting on each civil structure. Though there was an initial murmur, people slowly accepted the idea.



 Are you into any electrochemical research lately? I hear a lot of such variety from you.

Singapore is the island in which I lived in.  We are situated right at the tip of Malaysia penisula, and situated in a place whereby Sea Water is everywhere, and not a drop to drink.


Potable water is a major issue in Singapore, since water in the island is unable to supply the 5 million population of the small island.

We import water from malaysia.


Water, is a commodity, that is very precious. thus technology is needed to ensure that water is always abundant, and recyclable.   Singapore has even use sewage water, drain water, and convert them into drinking water.  or industrial water.


Sea water conversion to drinking water is yet another technology that we are looking into.   

Quoting from [francis teo]:

Singapore is the island in which I lived in.  We are situated right at the tip of Malaysia penisula, and situated in a place whereby Sea Water is everywhere, and not a drop to drink.



Potable water is a major issue in Singapore, since water in the island is unable to supply the 5 million population of the small island.


We import water from malaysia.



Water, is a commodity, that is very precious. thus technology is needed to ensure that water is always abundant, and recyclable.   Singapore has even use sewage water, drain water, and convert them into drinking water.  or industrial water.



Sea water conversion to drinking water is yet another technology that we are looking into.   

The University of Texas at El Paso (UTEP, for short) is probably the world leader in solar flash distillation technology. They might be the ones to help you, unless due to your low level above ground (sea level) and high humidity in the air you don't receive very much solar energy.

Another problem could be the lack of space in Singapore. In that case, conventional heating (for distillation) or reverse osmosis might be the way to go.