Biological Protection

BioBlower technology eliminates biological threats, including bacterial spores, bacteria and viruses, to >99.9999%. The kill mechanism is a function of temperature and residence time allowing the basic technology to scale to a broad range of flows using different compressor technologies including centrifugal fans for high volume flows.

 

 

Blower Type (lobes)

Heat Exchanger

Pressure ratio

Temp

°C

Challenge

Log

kill *

Comments

             

 

Proof of concept at UB

Roots (2)

none

2.69

247

Bg

>3

 

DOD Joint Science & Technology Office

Roots (2)

none

2.58-2.60

240

Bst

>6

Initial DOD funding

Technology Readiness Evaluation Program

GD 4504 (2)

none

2.76

240

Bg, Bt, MS2, vegetative.

bacteria

>6

DOD seeking alternate technologies

2006 DOD program

           

 

Varied  flow rate and temperature

GD 4504 (2)

none

2.12-2.82

160 - 240

Bg

>6 @240

Measured fall-off with temperature

300 CFM PD blower

GD 4504 (2)

cross flow

1.83

240

Bg

>6

Initial testing with heat exchanger

300 CFM tri-lobe PD blower

GD HF-408 (3)

cross flow

1.73

240

Bg

>6

Some data at lower temperature

 

GD HF-408

cross flow

1.76

240

Bg, E-coli, MS2

>6

Multiple challenges with heat exchanger

 

GD HF-408

counter flow

1.39

240

Bg

>6

Higher effectiveness heat exchanger

2009 DOD program

           

 

300 cfm Alpha prototype

GD HF-408

counter flow

1.16-2.0

240

Bg

>6

Identified kill mechanism

Optimized 300cfm prototype

GD HF-408

counter flow

1.07

240

Bg

>6

Pre-production prototype

1,000 CFM prototype

ProCharger F2 centrifugal

counter flow

1.17

220

Bg

>6

Initial testing with centrifugal blower, test at ~500 CFM

DOD SBIR program

 

 

 

 

 

 

 

 

5,000 CFM mobile, trailer based unit

AirPro

Centrifugal fan

counter flow

1.073

240

Bg

>7

Outdoor testing at HDT with ECU and biological testing at RTI

Internal Testing

 

 

 

 

 

 

 

300 CFM test unit

GD 406

Counter flow

Varied

flow rate from150 -200 scfm

64.5-143

MS2

varied

Shows virus kill at low temperatures. Extrapolate to no survivors at 170 C

 

 

 

 

 

 

Biological Testing Results

Greater than results means no downstream surviving spores detected.

300 CFM Alpha prototype used in testing

 

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