An introduction to Got Fog? and how it can help you with
your Halloween Celebration.
HOW THEY WORK
Take a trip into the inner workings of a fog machine to see
how they work.
FOG MACHINE FAQ
The largest fog machine frequently asked questions resource
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Buying tips and product reviews for a variety of fog
TIPS & TRICKS
Basic ideas and tips for using a fog machine for Halloween.
A variety of how-to projects to enhance the effect of you
FOG MACHINE SAFETY
These safety tips will help keep your Halloween festivities
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Water based fog machines are the most commonly available types
for both consumer use and commercial applications, and while there are many manufacturers
of fog machines, and while there can be great differences in the design and quality of the
components used by fog machine manufacturers, there operation is quite simple and almost
always the same.
fog fluid in the fluid tank is forced through a heat exchanger by a high pressure pump.
The heat exchanger maintains a high temperature at which the fluid vaporizes in a process
commonly known as "flashing". As the fluid is "flashed" it rapidly
expands, and that expansion forces the vapor through the nozzle of the machine. When the
vapor mixes with cooler air outside the fog machine, it instantly forms an opaque aerosol
we see as fog. That's
basically how most fog machines work. Below are more specific details of how the main
components of a fog machine work.
The Pump - In a fog machine, the pump plays the critical role
of delivering fog fluid from the fluid tank to the heat exchanger. The most commonly used
pump is a piston pump, and is carefully matched to the design of the heat exchanger. If a
pump delivers fluid too quickly, the heater will turn off relatively quickly since too
much fluid is moving through the metal block. This results in the machine shutting down to
re-heat in a shorter time. The piston pump is the source for most of the noise generated
by a fog machine.
The Heat Exchanger - Heat exchangers vary widely in design, materials,
wattage and quality. A well engineered fog machine have take into account all these
factors for optimum fog output and safety. Essentially, the heat exchanger is a block of
metal, usually aluminum, with a heating element built into it to heat the metal block. The
temperature of the block is regulated by a thermostat. A channel inside the metal block
allows the fluid to travel through it to the nozzle. The wattage used to heat the
exchanger is the specification most manufacturers use to describe how powerful their fog
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Fog Machine Buying Guide