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					Solar Heating & Hot Water

     Stephen Condon
   Sales & Marketing Manager
      ReVision Energy, LLC
ReVision Energy
Solar Hot Water Systems for Businesses, Homes and Municipalities

      Solar Power for our Local Residents, Businesses, Non-Profits, Schools & Municipalities
          ReVision Energy’s Mission:
To help Northern New England make the
transition from finite, polluting energy
sources to clean, renewable energy sources.
Reducing dependence on fossil fuels in two
of the most fossil fuel dependent States
                Who is ReVision Energy?
Engineers:               Brown, Dartmouth, MIT, UNH
In House Resources:      Master Plumbers and Electricians
NABCEP:                  8 Certifications
Projects:                More than 3,000 solar energy systems

     Each of our 52 employees have a vested interest in the
       workmanship and long term health of the company
   Solar Thermal Applications
• Domestic Hot
  Water

• Space Heating
  – Low temp
    radiant floors


• Pool Heating

          Professional design, installation and service of renewable energy systems.
 Commercial Solar Hot Water Design
Identify the hot water demand for the building
• Install a flow meter to accurately measure domestic hot water
  consumption in gallons – more common in commercial spaces

• Historical fossil fuel consumption during the summer months
   – Isolates Domestic Hot Water fuel from space heating fuels

• Average human consumption for each dwelling/unit…
   – Average 20 gpd for the 1st occupant, residential
   – Average 15 gpd for each additional occupant, residential

• Commercial Kitchen – 2-3 gallons of hot water per plate


             Professional design, installation and service of renewable energy systems.
   Solar Hot Water Components
• Collector types:




           FLAT PLATE                             EVACUATED TUBE



            Professional design, installation and service of renewable energy systems.
       Glazed Flat Plate Collectors
• Construction
   – Metal absorber in thermally insulated sheet metal box
   – Transparent low iron tempered glass to minimize heat loss and
     maximize transmission
• Characteristics
   – Good mid temperature performance
   – More cost effective than evacuated tube
   - Serpentine or Harp flow pattern
• Applications
   – Mid temperature applications
       •   Solar Domestic Hot Water
       •   Low Temp process water
       •   Preheat applications
       •   Occasionally Combi systems

                   Professional design, installation and service of renewable energy systems.
      Evacuated Tube Collectors
• Construction
   – Single wall or double wall glass cylinder with vacuum with
     metallic absorber inside.
   – Typically individual tubes connected to a manifold
   – Include barium getter to maintain vacuum
• Characteristics
   – Very low heat loss
   – Excellent performance in low light & cold conditions
   – Typically higher cost over flat plate
• Applications
   – Domestic hot water systems in cold climates
   – Combi Systems
   – Higher temperature process water systems
               Professional design, installation and service of renewable energy systems.
Components: Tanks




Professional design, installation and service of renewable energy systems.
Custom Solar Hot Water Tank




    Professional design, installation and service of renewable energy systems.
    Components: Pump Station
•   Pump
•   Temperature Gauge
•   Pressure Gauge
•   Pressure Relieve Valve
•   Check valve
•   Flow meter
•   Fill and Drain ports


          Professional design, installation and service of renewable energy systems.
How A Solar Domestic Hot Water System Works




        Professional design, installation and service of renewable energy systems.
Collector Mounting Options
                                      True Southern Orientation
                                      is approximately 196º on a
                                      compass (magnetic).

                                      Our latitude is the perfect tilt
                                      angle with a true south
                                      facing array, approximately
                                      43º to the horizon.

                                      There is a wide window of
                                      opportunity outside of 180º
                                      True and 43º tilt.
   Professional design, installation and service of renewable energy systems.
      Mounted
  perpendicular to
building to maximize
    collector area




           Professional design, installation and service of renewable energy systems.
Mounted Flush to Pitched Roof
    Takes the orientation and tilt of the roof




      Professional design, installation and service of renewable energy systems.
                   Solar Economics
• Up $50,000 C&I Cash Rebate from the NH PUC
     – Based on anticipated BTU output
     – Professional energy audit required
•   30% Federal Investment Tax Credit (ITC)
•   5 Year Accelerated Depreciation
•   Low interest financing and/or local utility incentive options
•   Renewable Energy Credits:
     – Designed to meet the needs of the NH RPS. We aim to achieve a 25%
       renewable energy mix by 2025.
     – Acts as a means of financing the up front investment of a solar hot water array
     – Assists in further development of commercial solar hot water systems in NH
     – Gains NH a step towards independence from the high and volatile cost of
       traditional fossil fuels.


                  Professional design, installation and service of renewable energy systems.
Renewable Energy Credits adding to
     success stories in NH!




           Colby Sawyer College
       127 kW Photovoltaic of renewable energy systems.
Professional design, installation and serviceArray

  RECs used to finance the project
                          Proctor Academy
                      72 kW Photovoltaic Array
                   RECs used to finance the project




Professional design, installation and service of renewable energy systems.
Case Study: Sunset Hill House
       Sugar Hill, NH




     Professional design, installation and service of renewable energy systems.
Professional design, installation and service of renewable energy systems.
Professional design, installation and service of renewable energy systems.
Institutions: Bowdoin College




     Professional design, installation and service of renewable energy systems.
Retail Business: LL Bean,
         Freeport




  Professional design, installation and service of renewable energy systems.
Breweries: Common Man
     Concord, NH




  Professional design, installation and service of renewable energy systems.
Non Profits and Affordable Housing

                      1000 square feet of collector area
                      1200 gallons of thermal storage




      Professional design, installation and service of renewable energy systems.
          Questions and Answers:
               Steve Condon
         NH Branch Sales Manager
603.583.0228 - scondon@revisionenergy.com

				
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