Download - Recent Simulator Activity

Recent Simulator Activity

• Baseline Testing– Fire testing performed during the first week of May 2000

– Agent testing performed during the third and fourth weeks of May2000

– Results/General simulation :• The air flow passing through the test section no longer attains the 400°F MPSE criteria

• During past core heating trials, fuel leaked through openings in the lower portions of the core to the test bay floor due to excessively rich conditions in the core volume

• The core heating burner was nozzled back from 6 gph to 2 gph to relieve the fuel leak

• Air flow heating to specific temperature is difficult due to the simplicity of the simulator

– Results/fire testing :• Used a heat flux transducer in a reference location within the spray fire zone to bench

mark fire intensity and behavior; NOTE: this is intended for in-house reference only

• Determined existing fuel nozzle array is insufficient (fuel not atomizing acceptably)

• A fire is occurring outside the annular fire zone within the core volume

• Electrical feeds to both hot plates damaged and require repair

– Results/agent testing :• Difficulty attaining low temperature agent storage profile

• Agent pressurization insufficient @70°F, 360 psig N2 top off

• Agent pressurization sufficient @70°F, 600 psig N2 top off

WJ Hughes Technical Center

Atlantic City International Airport, NJ 08405

USA

Contact :

Douglas Ingerson

tel : 609-485-4945


• Short Term Actions– Install process controller for the in-line duct heaters (week of 22May)

– Characterize the new nozzle arrays for spray fire scenario (week of 29May)

– Modify firex to attain colder agent storage temperatures (week of 29May)

– Repair/fire-harden electrical feeds and correct fuel leak problems around the hot plates (2-6June)



USA

Contact :

Douglas Ingerson

tel : 609-485-4945


• Test Data Plots– 6 tests are provided for viewing

– simulator settings and calculations for each test are provided on the next slide

– a table deciphering the plot legend text references is provided

– plot break down :• article test plots 411.21 and 525.12 are shown to illustrate air flow heating ability and

control as of now

• article test plots 502.11 and 503.11 are shown to illustrate the differences in fire behavior between conditions of ambient air/fuel and hot air/fuel

• article test plots 518.10 and 518.11 illustrate the generic response of the simulator environment during an agent release

• gas distribution plots 518.10 and 518.11 illustrate the distribution in the simulator

• Most of this information is "gee-whiz"

• The information is primarily the result of learning the simulator behavior/characteristics and bugging it out



USA

Contact :

Douglas Ingerson

tel : 609-485-4945




USA

Contact :

Douglas Ingerson

tel : 609-485-4945

File Reference : rtcl.00.411.21.d rtcl.00.502.11.d rtcl.00.503.11.d rtcl.00.518.10.d rtcl.00.518.11.d rtcl.00.525.12.dInlet free area (in^2) : 84 96.6 96.6 84 84 84

Ambient bay temperature (°F) : 55 68 64 71 73 73Core air flow temperature (°F) : varying 71 160 125 115 98

Mass flow (lbm/s) : 2.6 2.9 2.5 2.5 2.4 2.4Type of test : other - see comments other - see comments other - see comments agent distribution agent distribution other - see commentsAgent used : n/a n/a n/a HFC-125 HFC-125 n/a

Agent quantity (lbf) : n/a n/a n/a 3.75 3.75 n/aStorage temperature (°F) : n/a n/a n/a -45 -42 n/a

Storage pressure (psig) : n/a n/a n/a 165 165 n/aFirex bottle volume (in^3) : n/a n/a n/a 200 200 n/a

Fire scenario : n/a spray spray n/a n/a n/a Fuel type : n/a JP8/Jet-A JP8/Jet-A n/a n/a n/a

Quantity (gpm or q) : n/a see below see below n/a n/a n/aTemperature (°F) : n/a ambient hot n/a n/a n/a

fire out ? n/a n/a n/a n/a n/a n/aComment #1 : htg comparisons; core s/p=650°F;HFT profiles, f.flows@ 0.072,FSS ramp up, HFT trials@3965 s;MPSE phI trial MPSE phI trial ILDH run w/ new temp ctlr;Comment #2 : core and duct htrs on... 0.073, & 0.088 gpm; 2 min warm up0.072, 0.073, & 0.088 gpm(some agent lost due to inadvertent valve opening)none set point=103°F, dead band=2°F




USA

Contact :

Douglas Ingerson

tel : 609-485-4945

Air Stream Heating Response, rtcl.00.411.21.c2(In-line duct htrs & core@2gph nozzle, s/p=650°F, AFS on @ 84.0 in^2, bay vent on)

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sen/Inlt HWA




USA

Contact :

Douglas Ingerson

tel : 609-485-4945

Simulator maximum

heating ability @ 84 in2 open inlet

ILDH Process Control Trial, rtcl.00.525.12.c1Set Point @ 103°, dead band @ 2°F

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sen/Inlt HWA




USA

Contact :

Douglas Ingerson

tel : 609-485-4945

Simulator air stream

heating, via process

control (84 in2)




USA

Contact :

Douglas Ingerson

tel : 609-485-4945

Fire behavior from spray

nozzle array

Fire Behavior, rtcl.00.502.11.c1(AFS on @77.7 in^2, FZS nozzle fuel flow @ 0.072, 0.073, 0.088 gpm respectively)

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tst/490/t/spr_f.l

HFT




USA

Contact :

Douglas Ingerson

tel : 609-485-4945

Fire behavior from spray

nozzle array

Fire Behavior, rtcl.00.503.11.c1(AFS [email protected] in^2 open, in-line duct htrs, FZS nozl flo @0.072, 0.073, & 0.088 gpm)

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HFT




USA

Contact :

Douglas Ingerson

tel : 609-485-4945

Typical simulator

response for agent

discharge




USA

Contact :

Douglas Ingerson

tel : 609-485-4945

• Channel Allocations for the Halonyzer

– Forward RingA 12:00 ch # 11B 3:00 ch # 9C 6:00 ch # 8D 9:00 ch # 4

– Mid RingE 1:30 ch # 1F 4:30 ch # 7G 7:30 ch # 5H 11:30 ch # 2

– Aft RingI 12:00 ch # 10J 3:00 ch # 12K 6:00 ch # 6L 9:00 ch # 3

MPSE phI Trials, Test No. V114 Date:05/18/00 HFC-125, h125.00.518.10.c1

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USA

Contact :

Douglas Ingerson

tel : 609-485-4945

Agent discharge,

HFC-125

MPSE phI Trials, Test No. V115 Date:05/18/00 HFC-125, h125.00.518.11.c1

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USA

Contact :

Douglas Ingerson

tel : 609-485-4945

Agent discharge,

HFC-125




USA

Contact :

Douglas Ingerson

tel : 609-485-4945

• Comments– still bugging out systemic difficulties...

• fuel nozzle arrays for the spray fire scenario have been modified and characterized regarding flow/pressure curves; fire test behavior requires evaluation

• air flow heating– the in-line duct heaters are now controlled with a temperature process controller to provide tighter air

flow heating control

– the core is plumbed for 2 burners; only one is currently used, the second can be attached at a later time, if needed

• to rectify agent super-cooling difficulties :– have spoken with the testing contractor at WPAFB to learn from their experiences

– have additional simple modifications planned for the firex

• Summary/Observations– comparison of flux plots illustrates difference in fire zone behavior with respect to

air temperature (heat sink effects)

– agent releases performed with HFC-125 (simulation protocol); of 5 MPSE phase I attempts, 2 were considered reviewable (agent temp for HFC-125 was -42 and -45°F => representative of Halon 1301 @ -65°F)

– for the current simulator configuration, an agent weight for HFC-125 is somewhere between 3.50 and 3.75 lbm (Halon 1301 predicted to be 100/77 times that mass to achieve an MPSE-acceptable distribution profile)