Term
| passive solar design is 80% dependent upon _________ |
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Definition
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Term
| 3 tier approach for passive solar |
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Definition
Tier 1: Conservation
Tier 2: Passvie Solar
Tier 3: Heating Equipment |
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Term
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Definition
| highest priority; reduce heat energy loss; envelope design, proper insulation, orientation, surface area of volume rations are critical |
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Term
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Definition
| Consists of solar harvesting by passive means |
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Term
| Tier 3: Heating Equipment |
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Definition
| amount of fossil fuel supplied for mechanical and/or electrical equipment can be reduced between 60-80% for buildings within the U.S. |
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Term
Two primary characteristics of south facing windows that contribute to passive solar design |
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Definition
1. a collector consisting of south-facing glazing (glass)
2. an energy storage element that usually consists of a thermal mass ( typ. rock or water) |
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Term
| Three main passive solar systems |
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Definition
1. Direct Gain
2. Trombe Wall
3. Sunspace |
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Term
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Definition
short-wave solar energy enters the system which blocks heat from escaping;
most efficient when energy collection and first costs are main design concerns |
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Term
| in direct gain, the ration of ______ to _____________________ is critical to optimal temperature control |
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Definition
| mass to south-facing glazing |
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Term
| in direct gain, a ___-mass passive solar building has a large indoor temperature swing on a winter day while a ____-mass passive solar building will experience a small indoor temp. swing |
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Definition
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Term
| between direct gain and trombe wall, what is similarly prioritized? |
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Definition
| collector (because of orientation and amount of energy) |
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Term
| in direct gain, _______________ is more crucial than thickness (6 in. max thickness) |
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Definition
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Term
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Definition
short-wave solar energy enters the system which blocks heat from escaping, thermal mass/wall is located just inside glazing
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Term
| this system is desired when energy collection and not light admittance are the main design concerns |
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Definition
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Term
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Definition
| short-wave solar energy enters system, blocks heat from escaping, operability of greenhouse effect is key to usefulness |
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Term
| these spaces are typically separated thermal zones whose temperatures are allowed to have wide temperature swings |
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Definition
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Term
| also called solariums or sunrooms; requires ventilation |
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Definition
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Term
| least expensive, most efficient |
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Definition
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Term
| most expensive because of given extra living space, least efficient |
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Definition
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Term
| what if my site is not true south for solar glazing |
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Definition
| solar glazing will still work well up to 20 east or west of true south; even at 45 to true south, it still works fairly well |
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Term
| trombe wall: estimates for required thermal mass |
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Definition
adobe (6-10 in)
concrete/brick (10-16 in)
water (8+ in) |
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Term
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Definition
masonry-noninsulated (8-12 in)
masonry-insulated (4-6 in)
water (approx. 12 in) |
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