There is a close connection, or nexus, between energy and water. It takes a significant amount of water to create energy. Energy is also used in great quantities during the supply and treatment of waste water. For the year 2011 in the United States electricity from fossil fuels and nuclear energy required 190 billion gallons of water a day accounting for 39% of all the freshwater withdrawals while 4% off all power generation was used for water supply and treatment. Water and energy problems are connected to each other in such a way that, in spite of some partial and short-term success, partial responses are bound to fail in the long-term.
Water and energy policy, planning and management must be integrated to encourage conservation, motivate innovation and ensure sustainable use of water and energy. Hear about how interconnection of water and energy and how these two resources will be intertwined forever. I will cover questions such as:
Our November 19th meeting will provide insight into an industrialized methodology and technology for passive catchment and storage of fog as a new water source for residential and industrial use. As rain water is considered vertical precipitation harvesting, fog water is considered horizontal precipitation harvesting and can collect up to three times more water than rain without disrupting other ecosystems in areas where the requirements for fog water harvesting are met. Tatiana Estevez Carlucci will take us on a journey to explore a fascinating new technology which is being realized through her company, Permalution. Join us for this exciting look at a technology that can provide a new water source and help address some drought issues.
Clean, fresh water is an essential resource that has been dwindling at an alarming rate over the past few years. The importance of conserving and recycling water will be the topic for this event. In particular, examples of sound practices in architecural design will be described that have implications on Silicon Valley and all of California in this severe "drought state" and state of mind. Please come join us for Rinaldo Veseliza's fascinating talk with real world examples of what cities and businesses can do and are doing with proper planning, design, and communication.
The recent drought has prompted Governor Brown to enact mandatory water restrictions for the first time in the history of the state of California. With no end to the drought in sight and the level of the state’s reservoirs being at their lowest levels in decades, everyone will need to take steps to conserve this precious resource. Grey Water systems have recently been proposed as a method where home owners can help conserve water by using reclaimed water produced by laundry, sinks and bathtubs in non-potable applications such as irrigation or flushing toilets.
We will investigate why their time has come and how you can participate in conserving our most precious resource.
What are Grey Water Systems and what are the benefits of their use?
Why are Grey Water Systems becoming part of the water conservation discussion?
What are the concerns of using Grey Water?
Will I need a permit to install a Grey Water System?
If I wanted to install a Grey Water System, how would I go about it?
What products are safe to use with a Grey Water System?
Rainsavers recently completed a job in Mountain View, California whose owner built a home that uses very little municipal water and has native Santa Clara County plants, grasses and fruit trees. Rainsavers installs rain barrels, tanks and complete systems for residential, commercial and public facilities.
The homeowner built the home with a grey water recycling system, sheet metal roofing material, a solar hot water heating system, a “wetland” leach field where the grey water is diverted and a Rain Water harvesting system.
The owner also had a nine thousand gallon underground cistern installed as the home was built to store the rainwater from the roof. One of the goals and mandates coming from state and local governments is to greatly reduce runoff from around the bay area. All the gutter downspouts are routed to the tank. The water collected is tied to her drip irrigation system and used on the landscape. The tank overflow is directed to a rain garden where the water seeps back into the ground.
Rainsavers was hired to install the pump, pressure tank, electronic valves, controller, PVC conduits and electrical supply for the system on her property.
The first picture shows the smooth concrete siding, the metal roof, manhole access to the tank and the wetland field on the left side.
The drip system can be automatically switched from municipal water to the rain water system depending on storage levels, via a three-way electronic control valve.
The second picture shows the pump, pressure tank, controller and electric panel. A pressure tank has 20-40 pounds of air pressure to prevent the pump from cycling on/off as the systems is used. The controller monitors the water level in the tank, and it can activate system flush, backup, transfers, drain and service reminders.
If you have ever tried body surfing I am sure you have become very familiar with the forces in the waves that have knocked you around. Think about the miles and miles of coastline that exists. What if we could somehow harness some of that energy in those waves. In today's meeting we will take a look at wave basics, calculating how much energy is in a wave, and just how we can harness that energy. We will take a look at Wave Energy Conversion (WEC) and how it is done today and what is on the horizon. We will have some discussion as well as watch a video.