Green Passive Solar Home Plans with Sustainable Design
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This eco friendly Passive Solar House is nestled among mature trees and has a lean, "green" design that still puts style and comfort in the forefront. It stands apart from the crowd equally for its elegance and grace, and its eco friendly passive solar design and constructions.

This Passive House designed in a traditional cottage style has a simple and elegant shape. It is a 3-bedroom, 1 living room, kitchen-dinning room, 1 office, 1 guest room, 3.5-bathroom, 140 square meters, two-story single family home with a slopping roof

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"I follow in building the principles which nature has used in its domain" ~ Frank Lloyd Wright
 
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Passive House Standard
 
The passivhaus uses a combination of low-energy building techniques and technologies.
PASSIVE HOUSE INSTITUTE
Prof. Dr. Wolfgang Feist
Passive House is a performance based building standard that can result in a house that consumes as little as 10% of the total heating and cooling energy used by a house built to the 2006 building code.
 
To achieve it's impressively low levels of energy consumption, certified Passive House rely on proper solar orientation, an airtight envelope, lots of insulation, mechanical ventilation, and the reuse of heat.
 
The Passive House standard originated from a conversation in May 1988 between Professors Bo Adamson of Lund University, Sweden, and  Wolfgang Feist of the Institut für Wohnen und Umwelt (Institute for Housing and the Environment). 
 
After the concept had been validated at Darmstadt, with space heating 90% less than required for a standard new building of the time, the 'Economical Passive Houses Working Group' was created in 1996. This developed the planning package and initiated the production of the novel components that had been used, notably the windows and the high-efficiency ventilation systems.

 

 
For European passive construction, prerequisite to this capability is an annual heating requirement that is less than 15 kWh/(m²a) (4755 Btu/ft²/yr), not to be attained at the cost of an increase in use of energy for other purposes (e.g., electricity). Furthermore, the combined primary energy consumption of living area of a European passive house may not exceed 120 kWh/(m²a) (38039 Btu/ft²/yr) for heat, hot water and household electricity.
 
With this as a starting point, additional energy requirements may be completely covered using renewable energy sources.
 
Following are the basic features that distinguish passive house construction (for Central Europe climate):
Compact form and good insulation
All components of the exterior shell of the house are insulated to achieve a U-factor that does not exceed 0.15 W/(m²K) (0.026 Btu/h/ft²/°F).
Southern orientation and shade considerations
Passive use of solar energy is a significant factor in passive house design.
Energy-efficient window glazing and frames
Windows (glazing and frames, combined) should have U-factors not exceeding 0.80 W/(m²K) (0.14 Btu/h/ft²/°F), with solar heat-gain coefficients around 50%.
Building envelope air-tightness
Air leakage through unsealed joints must be less than 0.6 times the house volume per hour.
Passive preheating of fresh air
Fresh air may be brought into the house through underground ducts that exchange heat with the soil. This preheats fresh air to a temperature above 5°C (41°F), even on cold winter days.
Highly efficient heat recovery from exhaust air using an air-to-air heat exchanger
Most of the perceptible heat in the exhaust air is transferred to the incoming fresh air (heat recovery rate over 80%).
Hot water supply using renewable energy sources
Solar collectors or heat pumps provide energy for hot water.
Energy-saving household appliances
Low energy refrigerators, stoves, freezers, lamps, washers, dryers, etc. are indispensable in a passive house.




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