1.4.8 Solar Hot Water Collectors
Facilitate sunlight absorption via a surface within a solar collector or storage tank, and transfer heat using heat-transfer fluid or potable water to storage tanks.
Flat-plate collectors are insulated boxes that contain a dark absorber plate under one or more glass or plastic (polymer) covers. Integral collector storage system, or ICS, combines thermal collection and storage in a single unit. Evacuated-tube solar collectors feature parallel rows of transparent glass tubes. Each tube contains a glass outer tube and metal absorber tube attached to a fin.
Consider the economics of solar water heating systems (size, efficiency and cost), evaluate your site’s solar resources and investigate local codes, covenants, regulations and incentives. Can be used to preheat domestic hot water, process water or heating system.
Costly but does produce an energy and cost-efficient hot-water supply with minimal operational and maintenance expenses, particularly in sunny climates.
Solar water heating (free energy) and the potential for local rebates and tax credits create incentives for heavy consumers, i.e. in hotel and residential market sectors.
Solar water heating systems almost always require a backup system for cloudy days and times of increased demand. Sunny climates help but are not required. Indirect circulation systems are used in colder climates and operate with heat-transfer fluid and heat exchanger.
1.1.3 Building Orientation
1.7.9 Active Solar Heating
1.7.3 Solar Cooling