2011-7-12_solar_thermal_chris_chappell by gstec

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									Introduction to
 Solar Thermal
What Is Solar Thermal?

          Solar thermal systems use the energy of
          the sun to heat water or other fluids for a
          variety of uses.

          Solar thermal systems differ from
          photovoltaic (PV) systems, which use the
          sun’s energy to create electricity.

          Solar thermal systems can reduce site-
          generated greenhouse gases that are
          generated by traditional sources of
          energy.
History

   First solar water heaters were invented
   in the 1890’s in California.
   By 1954, Florida had over 100,000 solar
   hot water systems.
   Popularized nationwide in the 1970’s but
   industry faded in the 1980’s.
   There is a re-emerging market today
   with the need for renewable sources of
   energy. Today’s technology is superior and
   well regulated.
   Many countries around the world use
   solar as a primary source of hot water.
   The U.S. only accounts for 1% of the global
   solar thermal market, a $4 Billion dollar
   industry.
     Solar Thermal in Residential Applications

 Reduces dependence on fossil
fuels or electricity to heat water.

Allows homeowners to reduce
their carbon footprint.

 Can bring an excellent return on
investment and increase the value
of a home.
    Solar Thermal in Commercial Applications
 Multifamily Buildings, Hotels,
Hospitals, Restaurants, Gyms,
Assisted Living Facilities, Dorms,
and Office Buildings are just some
of the building types that use
significant amounts of hot water.

 Food preparation, cleaning, and
industrial processes can all use solar
hot water to reduce reliance on
non-renewable sources of energy.

Pool heating systems also use a lot
of energy. Solar thermal can offset
much of the energy used to heat
pool water.
Solar water heating can help:

Reduce the facility’s carbon
footprint by reducing Scope 1
emissions (site-generated
greenhouse gases).

Reduce energy bills and in turn
lower the facility’s operating
expenses.

Companies and organizations meet
their sustainability requirements.

Protect facility owners from rising
energy costs.

Provide a great investment with
significant rates of return.
  Glazed Flat Plate Collectors

Glazed flat-plate collectors are insulated, weather-
proofed units that contain an absorber plate under a
glazed glass cover.
                Unglazed Flat Plate Collectors


Unglazed flat plate collectors are
ideal for pool heating during the
late spring, summer, and early fall.

They can also be used to heat
domestic hot water and water for
other uses during summers (and
year-round in climates that have
very mild winters).
                         Evacuated Tubes

Consist of two glass tubes
separated by a vacuum. The vacuum
provides good insulation and creates
high temperatures in the collector.

Ideal when higher water
temperatures are needed.

More efficient in colder climates
or when less sunlight is available,
such as in foggy or overcast
conditions.
Solar Cogeneration
        Combines solar thermal and PV

        Uses the waste heat from the PV
        process to heat water

        Helps capture more of the sun’s
        energy than just PV alone
          High-Temperature Micro Concentrator

Uses the same technology as
utility scale solar thermal systems
but is now in a smaller solar
collector

Can heat fluids to over 400°F

Expands the uses of solar thermal
to include high temperature water
and steam processes and solar
cooling
Solar Storage
Mechanical Room
                                        Site Assessment
Current Energy Uses in the Facility: What types of
processes use energy in the facility? Is there a hot water
demand? Is there a cooling demand? Is there an
electricity demand? How large are each of these
demands?

Energy Source: What types of energy are being used in
the facility? Natural gas, propane, electricity, or a
combination of energy sources?

Facility Information: Is there a suitable roof area for
the collectors? Is there a location to do a ground-mount
array?

Facility Equipment: What types of equipment are
being used in the facility for these processes?

Green Attributes: Is there an interest (beyond
reducing utility bills) in the “green” attributes of the
system?
Financing and Incentives


              30% ITC Federal Tax Credit and
             accelerated depreciation

             California Solar Initiative-Thermal
             (CSI-T) rebates

              Purchase Power Agreements (PPA’s)
             and Lease Agreements
       The Economics of Solar Water Heating
Multifamily Housing Example:

 Installed system cost for 132-collector system:
  $660,000
 Estimated natural gas offset per year: 17,718
  Therms
 Estimated natural gas savings first year:
  $19,490
 Estimated CSI-Thermal Rebate: $209,440
 Estimated federal tax credit (ITC): $198,000
 Estimated 5-year federal tax depreciation:
  $196,350
 Estimated System Simple Payback: 6 years
 25-Year Positive Cash Flow: $1,100,372
 25-Year IRR: 14%
                    Contact Information


SunWater Solar
865 Marina Bay Parkway, Suite 39
Richmond, CA 94804

Contact: Chris Chappell
Office: (510) 233-0300
Cell: (650) 274-1713
Fax: (866) 856-8867
Email: cchappell@sunwatersolar.com

								
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