Solar Hot Water Update

I have been doing some research lately into Solar Hot Water heating systems and I wanted to post some of the information that have learned. Two people who I spoke with who were extremely helpful were Christina Snyder at the Clean Energy Coalition (888.818.0987 x707) and Tony at Renewable Energy Solutions (734-649-1777). (they are not responsible for any inaccuracies)  Here is some of the stuff I found out:

Types of Collectors
1. Flat Plate:
- cheaper but careful of ones with thin film plastic glazing
- takes more sun to heat up (greater water volume)
- collectors may not last as long
2. Evacuated Tube (coaxial)
- more expensive
- lower mass system so heats up quicker…better for MI winters
- double wall system recommended (vs. single wall)
- better longevity as a system
- maintenance easy (like changing out a light bulb)

Maintenance Costs (estimated):

• Check 6 months after install ( for leaks and such)
• Yearly checks on closed loop pressure and pressure differentials (Building Manager can do this)
• Change of Heat Transfer Fluid every 3 -5 years (Should be done by Professional )
• Replace Pump – 10 years
• Tank: 30 years (or longer) – less wear and tear than a directly heated tank.

Certification

The Solar Rating Certification Council certifies different type of solar heaters.

• OG 100 – Collector Certification
• OG 300 Complete System Certification

Certified Michigan Based Manufacturers of Solar Hot Water Systems

BTF Solar is one MI based manufacturer that comes recommended

Financial Incentives

DTE Incentives Program

Michigan Incentives Overview

Michigan – Residential Energy-Efficient Appliance Rebate Program (Heating and Water Heating)

Solar Calculators

http://www.findsolar.com/

http://www.joolze.com/