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Living Solar - How to tap in Assessments - relating the sun to the rooms Even a cold shady room may reveal the secret sunny exposure available with roof renovations which add big dividends and are quickly accomplished with new technology manufactured locally. (see new technology) Windows high up with the ceiling raised to admit cascades of light and warmth transform an ordinary renovation into an attractive home. Take a tour of your propertyand assess its energy potential: tour guide, drawings.**** How to find the sun and bring it inside - a tour of home base. Basics - stepping outside, find noon sun* The one sun has different qualities for different directions, different times of day and each season. Observing the changing sun leads to understanding of how it affects our lives and our homes. early warming, waking, beneficial, low angle is strong and full of energy heat and light, high in summer lower in Winter #___Afternoon or evening sun side or West* late warming, sometimes too much, low angle Cartoon: "Honey we need an air conditioner when the sun shines in every afeternoon." cool, diffuse, low in solar energy The streets are laid out north and south. Houses built on these streets often have no windows for solar energy because their sunny side walls are only a few feet from their neighbor which blocks the sun, even if there is a window in the end or side of the house. Some windows may still receive enough sun, or collectors can be installed on the roof if the active solar route is chosen. #___Long narrow houses On streets, long narrow houses expose their length to the sun, short end to the street. If the sun clears the house next to it in winter, then regular windows facing the sunny side at noon (#___) will work, otherwise use Dormer (#___) or Clerestory(#___) to bring light in from the top. On streets, wide houses which are long facing the street, benefit mainly from structural changes to the roof, because the roof has to be broken up to project light from the top separately into each end of the house from the sunny end. Use Dormer (#___) or Clerestory(#___). On Avenues, long narrow houses have a short end facing noon sun(#___), either the front or the back, which can benefit from increasing the amount of windows in those rooms. For rooms in the middle or opposite end or the shady side (#___), The only thing to do is use morning (#___) or afternoon (#___) windows if they are not blocked, or change the roof to dormer (#___) or clerestory (#___) to allow light in from the top. Also see Verandas (#___) for explanation of shade on the house. #___Angles of the sun, directions #___The climate and shapes of buildings* #___Seasonal changes and adapting*
Theory of solar renovations Enlarging openings to let in sun* Where do the windows go (#___)* Cartoon: "Gee Jack, I have all these picture window in my house and the sun never shines in." North windows. Active and Passive refers to two ways of storing thermal energy The difference between Passive and Active is that in Active heat is absorbed from the sun in a different place from where it will be stored or used, whereas in Passive parts of the building absorb and radiate the heat directly into the living space. The solar collector and the Heat storage system are united in that they cause space to be heated by sun. The term collector is most often referred to as part of an active (#___) system which changes the energy from the sun at the collector to heat energy which is to be radiated into the interior Parts of the building absorb heat energy. Radiant heat energy travels like a ray of light which is absorbed and radiated out again. The surfaces and materials of the walls, floor and ceiling absorb the radiant heat energy, raising the temperature of the materials, which radiate back out again. Nearby objects which are cooler will absorb the heat. More thick and massive materials like earth and stone and ceramic absorb and radiate large amounts of heat slowly. Direct Passive means there is more of a noticeable collector, whereas Indirect Passive means the collector is parts of the building more removed from interceding with the sun point blank. The systems termed 'active' solar collect heat in one place and move it actively to another place. Active uses water or air or other substances heated in a collector facing the sun. Pumps or fans move the medium through pipes or tubes to storage or living spaces. Active solar (#___) has higher operating costs than the Passive solar (#___) which can be offset by higher efficiency in the right situation. For heating domestinc hot water to warm it before it reaches the hot water heater, or for space heating or pre heating with radiant heating systems it will pay back over a period of time, about 10 __years.??check in literature Terms Review Radiant - Like light shining, it can be reflected and absorbed Passive (#___) - Uses materials in the building for heating Active (#___) - Transfers heat in a medium with pumps and tubes Insulators (#___) - Materials which resist the flow of heat through Mass (#___) - Dense materials and parts of the building Conductors - Allow heat to pass through Storage (#___) - Holding heat energy for use later Collector (#___) - Surface or Place in a building which collects heat. Convection - Heat transferred by the movement of material like water or air Specific Heat - A way of measuring properties of materials: The amount of heat a material can hold relative to the change in temperature of a specific amount of water. Phase change - Materials which change from one state to another with large amounts of heat and little change of temperature |
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