Solar Water Heating Systems

Solar water heating systems have, for decades, been successfully deployed all over the world in urban situations and remote rural environments to provide residential and commercial hot water. Although it is true that not every location is viable for a solar water heating system, these locations are unique and not the norm. In most instances solar water heating systems are highly effective in saving energy (therefore in saving money).

In addition to the many amazing characteristics of water, it has the ability to store and transport heat due to its large heat capacity. This is demonstrated by how the Gulf Stream keeps Northern Europe warmer by carrying heat from tropical South America northward across the Atlantic Ocean, bearing with it every day twice as much heat as would be produced by burning all of the coal mined globally in a year.

CWS has teamed with Power Partners to provide solar water heating systems that take advantage of water’s capacity to store and transport heat utilizing a “free” power source (the sun).

Complete Water Services has provided water treatment solutions to commercial, industrial and municipal communities for over a decade. The treatment of water is our passion. Water is a valuable resource, whether for consumption by humans or sophisticated manufacturing plants that require high purity water, or in the treatment of wastewater for re-use, or for eco-friendly release into the environment.

CWS brings an unrivaled depth of expertise to focus on harnessing the energy of the sun to provide hot water through custom design and installation of Solar Water Heating Systems, in both residential and commercial locations.

During a site visit, the viability of a location is carefully assessed. Then our team of professional engineers design the optimal solar water heating solution. Our Solar water heating systems are manufactured in America by our partner “Power Partner Solar”, for American conditions. They are Energy Star, SRCC and FSEC certified. Installations are undertaken by our thoroughly trained professional installation team.

Energy Star, SRCC and FSEC certified solar water heating solutions.

  • Low-profile mounting system with 150 mph wind rating
  • Specially-designed collectors look like skylights.
  • 25 Trim Colors available.
  • Systems for all climates (Tropical to Hard Freeze)
  • Virtually unbreakable collector glazing.
  • Certified systems qualify for Federal and State tax incentives. www.dsireusa.org
  • 10 Year Warranty

Solar collectors are made in the USA!

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Carbon Offsets

  • 2 person household offsets .67 of a ton per year with a 40 sq ft system
  • 4 person household offsets 1.26 tons per year with a 60 sq ft system
  • 6 person household offsets 1.47 tons per year with an 80 sq ft system.

The above is for a System 5 which uses the Rheem SolarAide Heat Exchange Water Heater. All other water heaters will vary depending on the efficiency of the existing water heater.

Resources

www.dsireusa.org – This is the website that will allow potential customers to see what the various tax/utility incentives are for their area.

www.solar-rating.org – This is the non-profit website for the agency that rates collectors. customers should only purchase collectors which are rated.

www.energystar.gov– This is the website that offers the listing of all energy star products certified.

www.energy.gov – This is the website for the dept of energy. It has a host of information on solar water heating

www.fsec.ucf.edu – This is the Florida Solar Energy Center and it has Florida certified systems and ALOT of information on solar.

Since the sun rises in the East, crosses over the horizon on the South and sets in the West, you want your collector to face as much as True South on your roof as possible. This is especially true for space heating where you need to be within 1 degrees of True South.


What You Need

Southern Orientation

Since the sun rises in the East, crosses over the horizon on the South and sets in the West, you want your collector to face as much as True South on your roof as possible. This is especially true for space heating where you need to be within 1 degrees of True South.

solarUp to 45 degrees East or West of true South has very little effect on year round domestic water heating. While less desirable, a West of even an East facing water heating system can work well, especially with an additional collector. Orientations over 45 degrees, such as home with a North-South ridgeline can tilt the collectors South with a Power Partner’s tilt kit.

While most collectors are mounted on the roof, many have been mounted on the ground, ot like an awning on the side of the house. Vertical mounting of collectors on the South roof is great for space heating.

No Shading

noshadeThe collectors mounted on the south facing roof, need maximum exposure to sunlight for higher efficiency. Therefore, it is desirable that there be no form of shading or trees covering the roof on which the collectors are to be mounted.

Good Collector Tilt

Optimum: Tilt Angle= Angle of Latitude

spaceThe collector angle is known as “tilt.” While a typical roof angle is 22 to 32 degrees, the tilt should be at least 15 degrees up from horizontal. Additional tilt usually has little effect on total year-round performance unless you are in an area with very sunny winters like Colorado.

A tilt angle equal to latitude is considered ideal for space heating. Because the winter sun is low in the sly, great vertical wall for space heating, which also prevents summer overheating.

Space for Solar Collectors

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1. Power Partner Solar 10-01 Collector
The feed and return are at one end. When stacked, they have a 2” space between them. Up to six 10-01 collectors can be stacked one above the other or up to twelve in a stacked, side by side configuration.

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2. Power Partner Solar 20-01 Collector
Residential: The feed and return are at one end. When stacked they have a 2” space between them. Up to 4, 20-01 collectors can be stacked one above the other or up to 8 in a stacked, side by side configuration.

Commercial: 20-01 collectors have custom options of feed through and turn around collectors. These collectors are ideal for commercial applications.

Space for Water Storage Tank

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Space required for water storage tank depends on the water storage capacity of the tank used. The following chart gives an approximate minimum space required for an 80 gal and 120 gal water storage tanks.

Path for Solar Lines from Collectors to Storage Tank

You need a good “path” for your two solar lines and wires to go from your tank to your South facing roof. It is desirable that this “path” be less than 40 feet (one way), but up to 80 feet ( if well insulated )is acceptable.

You will be running two ½” outside diameter copper tubes with a minimum of ½” thick high temperature insulation. You will also be running at least one wire set on the outside of the insulation for either power from a PV panel to the pump or a sensor wire for a differential controller. Horizontal lines need to be supported every six feet.

For PV pumped Power Partners Open Loop systems 1 and 3, a second wire set may be needed for a freeze snap switch, The Installation Manuals have detailed guidance on running solar lines.

Solar Pre-Qualification Checklist

  • South Facing Roof
  • No Shading on South Facing Roof
  • Collector Tilt
  • Space for Collector
  • Space for Water Storage Tank
  • Path for Solar Lines from Collector