<s>
A	O
wax	B-Algorithm
motor	I-Algorithm
is	O
a	O
linear	B-Algorithm
actuator	I-Algorithm
device	O
that	O
converts	O
thermal	O
energy	O
into	O
mechanical	O
energy	O
by	O
exploiting	O
the	O
phase-change	O
behaviour	O
of	O
waxes	O
.	O
</s>
<s>
A	O
wide	O
range	O
of	O
waxes	O
can	O
be	O
used	O
in	O
wax	B-Algorithm
motors	I-Algorithm
,	O
ranging	O
from	O
highly	O
refined	O
hydrocarbons	O
to	O
waxes	O
extracted	O
from	O
vegetable	O
matter	O
.	O
</s>
<s>
The	O
principal	O
components	O
of	O
a	O
wax	B-Algorithm
motor	I-Algorithm
are	O
:	O
</s>
<s>
The	O
biasing	O
force	O
is	O
typically	O
20%	O
to	O
30%	O
of	O
the	O
operating	O
force	O
and	O
often	O
provided	O
by	O
a	O
mechanical	O
spring	O
or	O
gravity-fed	O
dead	O
weight	O
applied	O
externally	O
into	O
the	O
wax	B-Algorithm
motor	I-Algorithm
.	O
</s>
<s>
Depending	O
on	O
the	O
particular	O
application	O
,	O
wax	B-Algorithm
motors	I-Algorithm
potentially	O
have	O
advantages	O
over	O
magnetic	O
solenoids	B-Algorithm
:	O
</s>
<s>
Both	O
the	O
application	O
and	O
the	O
release	O
of	O
the	O
wax	B-Algorithm
motor	I-Algorithm
is	O
not	O
instantaneous	O
,	O
but	O
rather	O
,	O
smooth	O
and	O
gentle	O
.	O
</s>
<s>
Because	O
the	O
wax	B-Algorithm
motor	I-Algorithm
is	O
a	O
resistive	O
load	O
rather	O
than	O
an	O
inductive	O
load	O
,	O
wax	B-Algorithm
motors	I-Algorithm
controlled	O
by	O
TRIACs	O
do	O
not	O
require	O
snubber	O
circuits	O
.	O
</s>
<s>
Wax	B-Algorithm
motors	I-Algorithm
can	O
be	O
operated	O
entirely	O
passively	O
by	O
exploiting	O
ambient	O
sources	O
of	O
energy	O
.	O
</s>
<s>
When	O
co-located	O
with	O
the	O
heat	O
source	O
,	O
wax	B-Algorithm
motors	I-Algorithm
can	O
be	O
operated	O
without	O
the	O
need	O
for	O
an	O
additional	O
external	O
power	O
source	O
.	O
</s>
<s>
Wax	B-Algorithm
motors	I-Algorithm
are	O
used	O
heavily	O
in	O
the	O
aerospace	O
industry	O
where	O
they	O
are	O
utilized	O
to	O
control	O
fuel	O
,	O
hydraulic	O
,	O
and	O
other	O
oils	O
critical	O
to	O
safe	O
flight	O
today	O
in	O
modern	O
airplanes	O
.	O
</s>
<s>
Wax	B-Algorithm
motors	I-Algorithm
are	O
contained	O
inside	O
"	O
self	O
actuating	O
"	O
thermostatic	O
mixing	O
valves	O
,	O
where	O
the	O
wax	B-Algorithm
motor	I-Algorithm
senses	O
thermal	O
change	O
and	O
responds	O
accordingly	O
to	O
yield	O
a	O
desired	O
mixed	O
fluid	O
temperature	O
.	O
</s>
<s>
Some	O
front	O
load	O
washing	O
machines	O
use	O
wax	B-Algorithm
motors	I-Algorithm
to	O
engage	O
the	O
door	O
lock	O
assembly	O
.	O
</s>
<s>
When	O
a	O
cycle	O
is	O
started	O
,	O
a	O
wax	B-Algorithm
motor	I-Algorithm
is	O
actuated	O
pushing	O
a	O
pin	O
outward	O
and	O
locking	O
the	O
door	O
.	O
</s>
<s>
In	O
moist	O
conditions	O
a	O
wax	B-Algorithm
motor	I-Algorithm
costs	O
less	O
for	O
equivalent	O
reliability	O
than	O
an	O
electromagnetic	O
solenoid	B-Algorithm
or	O
motor	O
latch	O
.	O
</s>
<s>
Wax	B-Algorithm
motors	I-Algorithm
are	O
also	O
commonly	O
used	O
to	O
drive	O
zone	O
valves	O
in	O
hydronic	O
(	O
hot	O
water	O
)	O
heating	O
systems	O
.	O
</s>
<s>
They	O
are	O
used	O
in	O
many	O
dishwashers	B-Application
to	O
release	O
the	O
detergent	O
dispenser	O
door	O
latch	O
.	O
</s>
<s>
The	O
wax	B-Algorithm
motor	I-Algorithm
acts	O
like	O
a	O
solenoid	B-Algorithm
when	O
activated	O
by	O
the	B-Application
dishwasher	I-Application
's	O
timer	O
or	O
control	O
,	O
and	O
the	O
piston	O
operates	O
the	O
mechanism	O
which	O
then	O
releases	O
the	O
catch	O
for	O
the	O
dispenser	O
door	O
.	O
</s>
<s>
Wax	B-Algorithm
motors	I-Algorithm
are	O
widely	O
used	O
to	O
operate	O
the	O
temperature	O
regulating	O
vents	O
of	O
greenhouses	O
.	O
</s>
<s>
A	O
paraffin	B-Algorithm
microactuator	I-Algorithm
is	O
a	O
type	O
of	O
wax	B-Algorithm
motor	I-Algorithm
,	O
often	O
fabricated	O
by	O
microelectromechanical	B-Architecture
systems	I-Architecture
(	O
MEMS	B-Architecture
)	O
technology	O
or	O
sometimes	O
precision	O
mechanics	O
.	O
</s>
