Copyright 2012

EarthTone Energies Green EarthTone Energies Green Technology for a Green Technology for a Green

BiosphereBiosphere

EarthTone Energies: Concepts EarthTone Energies: Concepts in Solar Thermal Technologyin Solar Thermal Technology

Solar Energy for Bismarck, ND?Solar Energy for Bismarck, ND?– EarthTone incorporates synergies from the EarthTone incorporates synergies from the

combination of 3 Dimensional Design with combination of 3 Dimensional Design with reflector/concentrator innovation.reflector/concentrator innovation.

– The result is a Solar water heater that will The result is a Solar water heater that will function well at -10 to -20 F as long as the sun function well at -10 to -20 F as long as the sun shines. No moving parts are exposed to shines. No moving parts are exposed to outside conditions. Concentrator is optimized outside conditions. Concentrator is optimized for mid-latitude winter conditions, like those for mid-latitude winter conditions, like those normal for the Northern tier of US States.normal for the Northern tier of US States.

EarthTone Energies EarthTone Energies Mark I Solar Thermal Mark I Solar Thermal

ConcentratorConcentrator

A Concentrator for All A Concentrator for All SeasonsSeasons

EarthTone Energies Mark EarthTone Energies Mark II Solar Thermal Water II Solar Thermal Water

Heater/PurifierHeater/Purifier

A New Age for Water A New Age for Water RemediationRemediation

Drinking Water for Mexico Drinking Water for Mexico CityCity

Tropical/Subtropical Climates require Tropical/Subtropical Climates require Point of Use Disinfection of Drinking Point of Use Disinfection of Drinking Water.Water.

Mexico City does not provide potable Mexico City does not provide potable water to its residents. They must boil water to its residents. They must boil their tap water in order to drink it.their tap water in order to drink it.

If they had Mark II’s they would have If they had Mark II’s they would have ~25 gal of drinking water per day~25 gal of drinking water per day

LightTrap LightTrap Photocatalyst Photocatalyst

Advanced Cutting Edge Advanced Cutting Edge Photoinitiator TechnologyPhotoinitiator Technology

LightTrap AdvantagesLightTrap Advantages

All the advantages of TiOAll the advantages of TiO22 Broader Absorption BandBroader Absorption Band

– Visible Absorption Peak at ~520 nmVisible Absorption Peak at ~520 nm– Broad Absorption over the Near IRBroad Absorption over the Near IR– Absorbs from UV to over 700 nmAbsorbs from UV to over 700 nm– No Need to Optimize for UV AbsorptionNo Need to Optimize for UV Absorption

Non-ToxicNon-Toxic Long Life CycleLong Life Cycle

– Periodic regeneration of CatalystPeriodic regeneration of Catalyst Dissociation Constant ~10Dissociation Constant ~1066

LightTrap Advantages: Cont.LightTrap Advantages: Cont.

TiOTiO22 Aerogel Substrate Aerogel Substrate– Provides Maximum Fixed Surface AreaProvides Maximum Fixed Surface Area– Can be Utilized Alone or with LightTrap Can be Utilized Alone or with LightTrap

DopantDopant

LightTrap Performance over LightTrap Performance over TiOTiO22

ORP vs. Temperature in degrees Kelvin

Red line TiO2 Black line LightTrap

To be considered potable, ORP must be -650 mV or more for a few minutes.

Chart AnalysisChart Analysis

TiOTiO22 alone will not reach the necessary - alone will not reach the necessary -650 mV until well after the water boils.650 mV until well after the water boils.– Might as well boil the water.Might as well boil the water.

LightTrap will reach the necessary -650 LightTrap will reach the necessary -650 mV at a modest ~70 C (160 degrees F)mV at a modest ~70 C (160 degrees F)

LightTrap not only kills bacteria and other LightTrap not only kills bacteria and other biotics, but will digest most organic and biotics, but will digest most organic and inorganic contaminants, something inorganic contaminants, something boiling alone cannot do. boiling alone cannot do.

EarthTone Energies Mark I EarthTone Energies Mark I EarthStation Commercial ArrayEarthStation Commercial Array ~5 kw/concentrator thermal~5 kw/concentrator thermal

– ~125,000 BTU/day~125,000 BTU/day ~30 kw/array thermal scalable to building ~30 kw/array thermal scalable to building

requirementsrequirements– ~500,000 BTU/day~500,000 BTU/day

~10 kw/array PV scalable to building ~10 kw/array PV scalable to building requirementsrequirements– Single axis tracking for stability, mechanical Single axis tracking for stability, mechanical

simplicity, near 3 axis performance for minimal simplicity, near 3 axis performance for minimal energy input to tracking mechanism.energy input to tracking mechanism.

High Summer OrientationHigh Summer Orientation

Winter OrientationWinter Orientation

Summer Orientation with Summer Orientation with Water PurificationWater Purification

Copyright 2012