Shared Flashcard Set

Details

E Tech II: Passive Solar _qz3
n/a
23
Architecture
Undergraduate 3
10/16/2011

Additional Architecture Flashcards

 


 

Cards

Term
passive solar design is 80% dependent upon _________
Definition
orientation
Term
3 tier approach for passive solar
Definition

Tier 1: Conservation

Tier 2: Passvie Solar

Tier 3: Heating Equipment

Term
Tier 1: Conservation
Definition
highest priority; reduce heat energy loss; envelope design, proper insulation, orientation, surface area of volume rations are critical
Term
Tier 2: Passive Solar
Definition
Consists of solar harvesting by passive means
Term
Tier 3: Heating Equipment
Definition
amount of fossil fuel supplied for mechanical and/or electrical equipment can be reduced between 60-80% for buildings within the U.S.
Term

Two primary characteristics of south facing windows that contribute to passive solar design

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)

Term
Three main passive solar systems
Definition

1. Direct Gain

2. Trombe Wall

3. Sunspace

Term
Direct Gain
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

Term
in direct gain, the ration of ______ to _____________________ is critical to optimal temperature control
Definition
mass to south-facing glazing
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
Definition
low...high
Term
between direct gain and trombe wall, what is similarly prioritized?
Definition
collector (because of orientation and amount of energy)
Term
in direct gain, _______________ is more crucial than thickness (6 in. max thickness)
Definition
surface area
Term
trombe wall
Definition

short-wave solar energy enters the system which blocks heat from escaping, thermal mass/wall is located just inside glazing


Term
this system is desired when energy collection and not light admittance are the main design concerns
Definition
trombe wall
Term
Sunspaces
Definition
short-wave solar energy enters system, blocks heat from escaping, operability of greenhouse effect is key to usefulness
Term
these spaces are typically separated thermal zones whose temperatures are allowed to have wide temperature swings
Definition
sunspaces
Term
also called solariums or sunrooms; requires ventilation
Definition
sunspaces
Term
least expensive, most efficient
Definition
direct gain
Term
most expensive because of given extra living space, least efficient
Definition
sunspace
Term
what if my site is not true south for solar glazing
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
Term
trombe wall: estimates for required thermal mass
Definition

adobe (6-10 in)

concrete/brick (10-16 in)

water (8+ in)

Term
sunspaces
Definition

masonry-noninsulated (8-12 in)

masonry-insulated (4-6 in)

water (approx. 12 in)

Supporting users have an ad free experience!