Chapter6

Front 1

active solar energy

Back 1

Systems
that use circulating
pumps and fans to
collect and
distribute heat..

Front 2

azimuth path

Back 2

The
sun's movement
from east to west.

Front 3

Closed loop solar
collection

Back 3

Systems
in which a collection
medium is
used to collect the
heat and transfer it
to water or air for
end use.

Front 4

compound parabolic
collector

Back 4

A combination of a
flat-plate collector
and a parabolic
collectol, offering
advantages of both
types.

Front 5

condensing unit

Back 5

In solar cooling
operations, the
unit where refrigerant
is condensed
from a gas back
into a liquid and
gives up its heat.
The condenser is
located outside
the refrigeration
area and transfers
heat out of the
area to another
environment.

Front 6

conduction

Back 6

refers to the
transfer of heat from molecule to molecule, straight through a material or group of materials,
such as those that comprise a wall.

Front 7

convective loop

Back 7

is formed that does not require any circulating pumps or
fans.

Front 8

direct gain approach

Back 8

The
most common type
of passive solar
collection. In this
type of system,
there are no significant
architectural
provisions made to
coilect solar energy,
other than facing
windows in the
proper direction.

Front 9

evaporator

Back 9

A
freezing unit used
in solar cooling
operations.

Front 10

flat-plate collector

Back 10

The most
common type of
active solar
collector. It is typically
stationary,
mounted on a
rooftop, facing
south in the
northern hemisphere.

Front 11

indirect gain approach

Back 11

makes use of a storage medium to store
heat for later use.

Front 12

isolated gain approach

Back 12

A type
of passive solar
collection in which
the solar collector
is isoiated from the
structure to be
heated.

Front 13

linear-concentrating
parabolic coliector

Back 13

The next type of active solar collector

Front 14

open loop solar collection

Back 14

Systems
in which the
heated water or air
is directly distributed
for use.

Front 15

parabolic dish collector

Back 15

An active
solar collector that
is point focusing.

Front 16

passive solar energy

Back 16

Systems that do
not make use of
any externally
powered, moving
parts, such as
circulation pumps,
to move heated
water or air.

Front 17

phase change

Back 17

A
change in a :rutrst;
l:ct's siatr:
(iir1r-iicl, soiid, or
:aa s ]..

Front 18

photoelectric effect

Back 18

The emission
of free electrons
r.t hen photons
strike certain
metals..

Front 19

photovoltaic cell

Back 19

A cell that converts
sunlight directly
into electricity. This
occurs when positively
charged
photons strike the
cell and displace
electrons from the
valence shell of the
material making
up the cell..

Front 20

Trombe wall

Back 20

is a common application of the indirect gain approach.

Front 21

zenith path

Back 21

The
height of the sun in
the sky..