By Energy Efficiency and Renewable Energy Clearinghouse (U.S.)
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Solar power in structures offers sun radiation basics and their purposes in constructions, supported through theoretical research and result of unique simulation stories in solar power availability, assortment, and conversion for either energetic and passive use. In-depth insurance of power stability and warmth move in development envelopes is supported by means of the inclusion of calculations and case stories, whereas contextualizing inside an built-in layout technique.
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5 Heat Exchangers, The purpose of a solar heat exchanger is to transfer the collected solar heat from a non-freezing fluid into the water in the storage tank. Heat exchangers used in solar heating systems are typically one of three types: o Tube-in-tube o Coil-in- tank o Shell and tube Tube-in-Tube Tube-in-tube heat exchangers are typically used on smaller systems (20 sq. ft. to 600 sq. ft. of collector area). As their name implies, they consist of a tube within a tube. One fluid moves through the innermost tube, and the other fluid moves in the opposite direction through the space between the outer and inner tubes.
All piping 1 inch or larger should be insulated to at least R-6. Exterior piping of all sizes benefits from insulation to R-7. (Figure 2-45) Protection from moisture and ultraviolet radiation is necessary for all exterior insulation. (Table 2-2) Polystyrene or polyethylene should never be used for solar applications. These materials melt at a temperature of 165ºF, well below the expected temperature for piping in most parts of all systems. 7 COMPONENT OPERATION Good insulation practices require the following: o All exterior joints must be sealed and protected, including those between the insulation and collectors, and roof penetrations.
Figure 2-21) Because the motor and pump are physically separated, periodic lubrication is usually required, and inspection procedures include checking for shaft alignment and bearing wear. 7 COMPONENT OPERATION FIGURE 2-20 Wet Rotor Circulating Pumps: CartridgeType (left) and Magnetic Drive-Type (right). e. e. 3 Piping. Virtually all solar heating system piping is copper tubing. Tubing type ( K, L or M) varies with applications and local code requirements, but follows traditional application rules.