The Enviornment & Building Envelope Flashcards
Thinking of the human body… buildings have thus in common…
System of structure and utilities that support it.
Requires a skeleton , nerves, pumps, lungs and brain.
Plenums
Overhead element. Space between the ceiling and structure.
Chases
In between the walls
Service Cores
Big components. Core if the building ( think of bathrooms)
What is M/E/P
Mechanical systems ( heating, ventilation, and air conditioning)
Electrical (power and light)
Plumbing Systems ( fresh and waste )
Dynamic Building Envelope include
Operable windows, window shading devices, and insulation shutters.
Energy Efficency
Envelope. Distribution. Equipment. Lighting. Applicances.
Positives Rating Systems: energy star homes, EPA indoor air plus
Indoor Environment Quality
Bulk moisture. Radon. Pest control. HVAC. combust. Materials. Commissioning
Positive ratings: passive house institute US.
Resource Efficiency
Site planning. Location. Water. Materials. Waste management. Renewables.
Positive ratings: LEED. Water Sense. Certified Green Homed and Remodleing
Restorative
Zero energy. Captured rain water. Black water remediation. Realist free materials, air quality testing. Accessibility. Aesthetics. Mental health, sustainable business.
Positive Rating: Living Building Challenge
USGBC stands for?
US Green Building Council
LEED stands for?
Leadership in Energy and Enviornmental Design
ASHRAE stands for ?
The American society of heating, refrigerating and air conditioning engineers
How many certification levels are there for USGBC?
4
4 properties of Heat Flow
Thermal Conductivity. Thermal Bridges. Thermal Mass. Thermal Properties of Building Materials.
U-Value
Measure thermal resistance of other building envelope materials. Low # mean better performance. Heat loss through glass
R-value
Thermal resistance. Stop the transfer of heat or cold. Typically an exterior wall. They are both mathematical reciprocals
Calibrated Blower Door Test
Hopes to find the happy balance between not letting air out but also not holding too much
Moisture Flow
Vapor Pressure. Vapor Retarders
Insulation Materials
Air Spaces and Air Barriers.
Air is the best insulator
Passive Solar Systems have 2 elements
A collector with south facing glazing (northern hemisphere)
Energy Storage which is usually a thermal massive materials such as a rock or water
Direct Gain Systems
Defenestration. Simplest passive solar home design technique. Sunlight enters the house through windows without interference and the heat collection, storage and distribution all occur within the same space.
When light reaches floors and walls, they absorb and store the solar heat.
At night the stored heat energy warms the room through convection and radiation
Indirect Gain Systems
Thermal storage walls. Roof ponds. Greenhouses and sunspaces. A technique by which thermal energy is stored in an area adjacent to (but not part of) the living space.
Thermal Mass does what?
Such a trombe wall, absorbs the suns heat energy through glazing, and slowly release it through convection and conduction
What do we depend on buildings for?
Sanitation, visual and accoustic environments, space and means to move, and protection from injury
What is a major concern for building placement?
Site and orientation
What percent of total energy use do buildings account for?
41%
______ ______ is energy that comes from naturally occurring resources
Renewable Energy
(Such as sunlight, wind, or geothermal heat)
The use of what is an important sustainable design technique?
Daylight
____ _____consists of the earths internal heat
Geothermal energy
_____ is the organic matter of plants
Biomass
What is thermal lag?
The earth stores hear and releases it at a later time
When is the lowest daily temperature?
Just before sunrise