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 Air
Hygiene International, Inc uses deluxe emission testing
trailers to tackle larger emission testing projects that include
any combination of real-time gas analysis along with wet chemistry
sample collection. Our deluxe emission testing trailers typically
house three- to six-person testing crews, with an experienced project
manager on-site at all times directing the testing operation.
The deluxe emission testing trailers can perform all the functions
of our standard emission testing trailers, with additional capabilities
to perform the following services:
- Inlet/Outlet Testing (incinerators, thermal oxidizers,
spray booths, scrubbers, etc.)
- Efficiency Testing (compressor engine catalytic converters)
- Side-By-Side Total Yield Testing (various units
to same stack)
- Dual Stack Systems Testing
- Single Source Testing (with a set of back-up analyzers)
The trailers are at least 16 feet long with dual sample banks of
gas analyzers, wet chemistry/particulate workbenches, and the supporting
equipment detailed below.
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 Sample
Probe: typically stainless steel tube of various lengths
or diameters; used to transport gas from various locations within
the stack flow to the probe housing.
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Probe Housing: preheated to 400 degrees Fahrenheit to
minimize gas condensation; contains pressure valve to automatically
switch from stack analysis to bias run; contains connections
for sample nozzle, heated sample line, and bias line.
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Sample Line: available in 50 or 100 foot lengths and
may be connected to allow any desired length from stack to testing
lab; preheated to 250 degrees Fahrenheit to minimize gas condensation;
main sample line and bias line run in parallel with both wrapped
in heating coil; attaches probe housing to gas conditioner.
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Gas Conditioner: thermal electric chiller that runs
at 4 degrees Celsius; moisture from the stack gas is condensed
and pulled out by a peristaltic pump; stack gas has no significant
contact with moisture.
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Manifold: controls the flow of gas for analyzer calibration,
stack gas analysis, and biasing; monitors the total flow rate
of the system and the flow rate going to each analyzer.
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 Gas
Analyzers: typically include oxygen (O2), carbon dioxide
(CO2), carbon monoxide (CO), nitrogen oxides (NOx), sulfur dioxide
(SO2), and total hydrocarbon (THC) analysis units; sample rack
designed so each unit is interchangeable for specific analysis
needs.
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Logic Beach Hyperlogger Data Recorder: records electronic
signal from each analyzer, may also monitor up to six on-site
equipment operating parameters (i.e. fuel flow, stack temperature,
manifold pressures, incinerator temperature, etc.) and records
in database type format; uplinks directly to laptop computer
and allows real-time tracking, real-time trending/graphing,
and immediate downloads and reporting.
A typical system setup extracts stack gas through the sample nozzle,
into the probe housing, through the heated sample line, into the
gas conditioner, through the analyzers, and out the vents (See Unit
#202 Schematic). A portion of the stack gas can be redirected before
the gas conditioner for analyzers that require a wet gas sample
(i.e. THC). A few adjustments to the manifold board allow for a
quick change from stack gas sampling to running a calibration or
a bias. For specific HAP analysis, conditioned gas samples can be
metered through selected collection media and analyzed by gas chromatographs.
With our deluxe emission testing trailer, Air
Hygiene can offer our clients several "extras"
which include:
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SPIDER
Networking: Air
Hygiene clients can see analyzer data in real-time
by connecting control room computers with the mobile lab systems
via network cable, eliminating the miscommunications and efficiencies
associate with radio or "runner" exchanges. Networking
facilitates rapid engine mapping and immediate load and fuel
changes, saving the client time, money, and headaches.
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Instant Reports: with our preprogrammed
hyperlogger system, on-board printer/copier, and system integrated
laptop computers, Air Hygiene
can distribute reports to the client in the field within minutes
after the testing is completed.
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