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WPT Green Systems

Products | Autoclaves

Bonding Press | WPT Green Systems

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What are "Green Systems"

WPT Green Systems is committed to the technological advancement of environmentally friendly autoclaves, as well as other industrial process equipment.

Our environmental goals include cutting energy consumption, lowering emissions, and reducing your companies’ carbon footprint, while increasing efficiency in gas fired thermal process equipment.

WPT Green Systems has advanced gas fired thermal process equipment through the development of more intelligent burner technologies and controls, and is an industrial leader in low and ultra-low NOx burners, heat recovery systems and hybrid burner technology.

Low and Ultra Low NOX Burner Systems

The traditional autoclave gas burner system uses mechanical valves and linkages to control the air to fuel ratio. These systems do not account for the nonlinearity of mechanical components and cannot auto-adjust to accommodate a wide range of operation. Our low and ultra-low NOx burner systems utilize a nozzle-mixing, medium velocity, low excess air burner, with precision air to gas control valves, and an intelligent ratio controller to reduce emissions by up to 85% ppm and 99% CO ppm*.
* See table below for details

Why Worry About NOx Emissions?

Nitrogen Oxide is a leading cause of greenhouse gases and photochemical smog, both of which effect the environment and the human body. The emissions of NOx can severely irritate lung conditions such as asthma and cause a reduction in lung function, as well.

View the table below to see the results when upgrading from an outdated gas burner to a high efficiency WPT ultra low NOx burner system.

Original Burner System
Test Run 1 Test Run 2 Test Run 3 TCEQ 117.410 ESAD
NOx ppm @ 3% O2
Nitrogen Oxides Emission Rate, ppm @ 3% O2
66.7 66.5 65.9 29.3
CO ppm @ 3% O2
Carbon Monoxide Concentration, ppm @ 3% O2
5272.16 5272.08 5362.95 400
WPT Ultra Low NOx Burner System Retrofit
Test Run 1 Test Run 2 Test Run 3 TCEQ 117.410 ESAD
NOx ppm @ 3% O2
Nitrogen Oxides Emission Rate, ppm @ 3% O2
8.98 8.98 10.26 29.3
CO ppm @ 3% O2
Carbon Monoxide Concentration, ppm @ 3% O2
14.64 4.18 2.31 400
*All tests were performed on customer equipment. Original burner statistics did not meet environmental standards for NOx emissions. Burner retrofit statistics are well below environmental standards. All results are reported by a 3rd party company, air quality control group. The fluctuation seen during the WPT test runs are the result of a WPT Technician tuning the burner during each testing phase.

Heat Recovery Systems

On most autoclave systems today the gas heating process takes place in a combustion system circulating hot air through the heating coil and then exhausting to atmosphere. By reintroducing the exhaust air back into the heating system it reduces the amount of energy required to heat the ambient air necessary to maintain the system process temperature.

This reduces fuel consumption of a gas burner by an average of 25% during ramp and 70% during soak per cure cycle.

95 °F to 400 °F 50 PSI
Burner Inlet Temp: 1200 °F
Exhaust Flow: 4300 SCFM
A/C Fan: 60 Hz
Recirculation System Disengaged
Burner Firing Rate - Ramp 4.36 Average MMBtu/Hr
Approximate Time to Temp 32 Minutes
Approximate Fuel Usage - Ramp 2.325 Average MBtu
Burner Firing Rate - Soak 1.88 Average MMBtu/Hr
Approximate Soak Time 60 Minutes
Approximate Fuel Usage - Soak 1.88 MBtu
Approximate Total Fuel Usage 4.20 MBtu
95 °F to 400 °F 50 PSI
Burner Inlet Temp: 1200 °F
Exhaust Flow: 4300 SCFM
A/C Fan: 60 Hz
Exhaust Valve Control to 500 °F - Max 80%
Burner Firing Rate - Ramp 3.4 Average MMBtu/Hr
Approximate Time to Temp 32 Minutes
Approximate Fuel Usage - Ramp 1.81 Average MBtu
Burner Firing Rate - Soak 0.75 Average MMBtu/Hr
Approximate Soak Time 60 Minutes
Approximate Fuel Usage - Soak 0.75 MBtu
Approximate Total Fuel Usage 2.56 MBtu