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SOLAR ENERGY SYSTEMS
AIR CONDITIONING & HEAT PUMP SYSTEMS
AIR LEAK MINIMIZATION
AIR LEAK SEALING PROCEDURE
AIR SEALING STRATEGIES
BIOGAS PRODUCTION & USE
EVAPORATIVE COOLING SYSTEMS
FLOOR FRAMING & SUBFLOOR for TILE
FLOOR POURED FINISH ON CONCRETE SLABS
FLOOR RADIANT HEAT Mistakes to Avoid
FLOOR TYPES & DEFECTS
FRAMING DETAILS for BETTER INSULATION
FRAMING DETAILS for DOUBLE WALL HOUSES
FRAMING METAL STUD PERFORMANCE
FREEZE-PROOF A BUILDING
FROST HEAVES, FOUNDATION, SLAB
GREEN BUILDING CONSTRUCTION CODES GUIDES
GREENHOUSE DESIGN for SOLAR HEATING
GREENHOUSE / SUNSPACE GLARE
HEAT LOSS in BUILDINGS
HEAT LOSS DETECTION TOOLS
HEAT LOSS INDICATORS
HEAT LOSS PREVENTION PRIORITIES
HEAT LOSS R U & K VALUE CALCULATION
HEAT LOSS RATE CALCULATIONS
HEATING SMALL LOADS
HOUSEWRAP INSTALLATION DETAILS
HUMIDITY LEVEL TARGET
INSULATION IDENTIFICATION GUIDE
INSULATION LOCATION - WHERE TO PUT IT
LEED GREEN BUILDING CERTIFICATION
LEED Building Designation & IAQ
MOISTURE CONTROL in BUILDINGS
NOISE / SOUND DIAGNOSIS & CURE
ODORS GASES SMELLS, DIAGNOSIS & CURE
PLUMBING SYSTEM INSPECT DIAGNOSE REPAIR
RADIANT SLAB FLOORING CHOICES
RADIANT SLAB TUBING & FLUID CHOICES
ROOFING INSPECTION & REPAIR
ROOF VENTILATION SPECIFICATIONS
ROOF ICE DAM LEAKS
SHEATHING, FOIL FACED - VENTS
STRUCTURAL INSPECTIONS & DEFECTS
SUMP PUMPS GUIDE
SWEATING (CONDENSATION) on PIPES, TANKS
THERMAL EXPANSION CRACKS in BRICK
THERMAL EXPANSION of HOT WATER
THERMAL EXPANSION of MATERIALS
THERMAL IMAGING, THERMOGRAPHY
THERMAL IMAGING MOLD SCANS
THERMAL MASS in BUILDINGS
THERMAL TRACKING & HEAT LOSS
VAPOR BARRIERS & AIR SEALING at BAND JOISTS
VAPOR BARRIERS & CONDENSATION in BUILDINGS
VAPOR BARRIERS & HOUSEWRAP
VAPOR CONDENSATION & BUILDING SHEATHING
VENTILATION in BUILDINGS
WATER SOFTENERS & CONDITIONERS
WIND ENERGY SYSTEMS
WIND TURBINES & LIGHTNING
WINDOWS & DOORS
WINTERIZE A BUILDING
WOOD, COAL STOVES & FIREPLACES
WOOD STOVE SAFETY
ZONE VALVES, HEATING
This article discusses the Passive Solar Design Handbook leaves some passive solar evaluation (solar energy savings fraction) questions that are answered by an expert. Accompanying text is reprinted/adapted/excerpted with permission from Solar Age Magazine - editor Steven Bliss. Our page top photo shows windows admitting morning solar gain in a nearly-balanced-energy passive solar home in San Miguel de Allende, Guanajuato, Mexico.
Readers who need to understand the basics of how passive solar heating systems work should see PASSIVE SOLAR DESIGN KEY ELEMENTS. Readers concerned with accurate calculation of the "percent solar" and similar energy savings assessments should see PASSIVE SOLAR HEAT PERFORMANCE. Readers should also see SOLAR HOUSE EVALUATION. Contact us to suggest text changes and additions and, if you wish, to receive online listing and credit for that contribution.
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Question: I have questions concerning the Passive Solar Design Handbook
For a house with a combination solar system, that is, combining a water well, direct solar gain, and a Trombe wall in one building, how does one go about finding the solar savings fraction?
Do the calculations take into account internal gains? -- Richard Glaser, Glenwood Springs CO
If the passive solar designed building has more than one type of energy system, divide the building load coefficient by the combined areas of all the passive solar energy system types to get a single Load Collector Ratio (LCR).
Using that LCR, determine the solar savings fraction for each alternative energy system type. This amounts to assuming that the entire solar wall is first one type, then the next, and so forth.
The final solar savings fraction is the average of each fraction weighted according to the percentage each solar energy system represents in the combined solar collector area.
The solar fraction calculation procedure is explained well enough in Volume III of the Passive Solar Design Handbook.
The LCR method of assessing the solar savings fraction does not take into account heat gains from people, lights, or appliances. For a closer look at the passive solar design method and for the answers to many other questions you may have about it, Solar Age Magazine published a series of articles beginning in May 1983.
List of Passive Solar Design Key Reference Books including Online Texts
The first three passive solar design handbook links below are to free, online documents.
Here we include solar energy, solar heating, solar hot water, and related building energy efficiency improvement articles reprinted/adapted/excerpted with permission from Solar Age Magazine - editor Steven Bliss.
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