Sustainable Living

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(after www.calearth.org)
Nueva Tierra's Objectives:
  • build natural and sustainable living spaces
  • utilize renewable energy resources(wind & Solar)
  • grow healthy organic natural food.
  • higher efficiency using energy, water, and other resources
  • reducing waste, pollution, and environmental degradation
  • improving occupant health an human productivity.
  • Nueva Tierra will educate and be an example for sustainable living
  • Superadobe(Earth bag homes)Sustainable homes can be built for as little as $16/sq ft using Earth bags. Nadir Khalili an architect working for NASA to design  housing for colonizing planets devised a method of using natural materials to build inexpensive, earthquake proof, fire proof, pest proof homes that offer diverse building styles(www.calearth.com).

Off Grid Wind Energy
  • Not all locations are suitable for wind energy
  • A single commercial wind turbine can power 500 homes when the wind is blowing.
  • Wind energy is among the fastest, cheapest, largest-scale ways to reduce carbon pollution today
  • The wind resource map shows the predicted mean annual wind speeds at an 80-m height, presented at a spatial resolution of about 2 kilometers that is interpolated to a finer scale for display. Areas with annual average wind speeds around 6.5 meters per second and greater at 80-m height are generally considered to have a resource suitable for wind development. Utility-scale, land-based wind turbines are typically installed between 80- and 100-m high although tower heights for new installations are increasing—up to 140 m—to gain access to better wind resources higher aloft (https://windexchange.energy.gov/maps-data/89)

Off Grid Solar Energy

  • Not all locations are suitable for solar energy
  • A basic home photovoltaic(PV) system consists of PV cells connected and packaged together in weather-protected modules, which are fastened side-by-side on a racking system to form an array. The PV modules produce direct current (DC), which in a grid-tied system flows to a grid-interactive inverter. An inverter changes DC voltage to the alternating current (AC) for the household electric circuit powering wall outlets and all AC appliances.
  • If you live far from the main road, it may be too expensive to run a power line in from a utility pole. In that case you’ll need to generate your own solar electricity and store it in a bank of batteries for use at night. Off-grid homes use heavy-duty deep-cycle batteries, similar to the batteries used in fork-lift trucks.Batteries are charged with DC from a charge controller, which can take power directly from a PV array. Power taken off the battery goes to the inverter for household use.

Geothermal Energy

  • Binary Cycle Power Plant

    Binary cycle geothermal power generation plants differ from Dry Steam and Flash Steam systems in that the water or steam from the geothermal reservoir never comes in contact with the turbine/generator units. Low to moderately heated (below 400°F) geothermal fluid and a secondary (hence, "binary") fluid with a much lower boiling point that water pass through a heat exchanger. Heat from the geothermal fluid causes the secondary fluid to flash to vapor, which then drives the turbines and subsequently, the generators.

    Binary cycle power plants are closed-loop systems, and virtually nothing (except water vapor) is emitted to the atmosphere. Because resources below 300°F represent the most common geothermal resource, a significant proportion of geothermal electricity in the future could come from binary-cycle plants.
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