Heritage Barn Quilt Patterns. 1  Choose your quilt pattern from these designs. 2  Hold your mouse over an image below to see the pattern name, number, and description. 3  Click on the quilt pattern and a larger image will appear. 4  Color choices are listed at the bottom of the page. 5  Please return to our Barn Quilts For Sale page to place your order.
Definition of Solar Heating. What Is Solar Heating? Solar heating refers to the renewable energy system that collects energy from the sun in the form of heat rather than using the sunâs energy to produce electricity, as is the case with solar photovoltaics. Solar heating systems can be used to provide space heating and water heating to be used in residential, commercial, or industrial facilities.
Use the solar energy factor (SEF) and solar fraction (SF) to determine a solar water heater's energy efficiency. The solar energy factor is defined as the energy delivered by the system divided by the electrical or gas energy put into the system. The higher the number, the more energy efficient. Solar energy factors range from 1.0 to 11. Systems with solar energy factors of 2 or 3 are the most common. Another solar water heater performance metric is the solar fraction. The solar fraction is the portion of the total conventional hot water heating load (delivered energy and tank standby losses).