flash to a gas

English translation: yes that's what it means

11:55 Jul 25, 2005

English language (monolingual) [PRO]
Tech/Engineering - Mechanics / Mech Engineering / industrial cleaning

English term or phrase: flash to a gas

co2 cleaning plant

"The CO2 inside the machine is liquid at room temperature because it is under high pressure. When the pressure is reduced to atmospheric, the liquid will boil or flash to a gas immediately, becoming extremely cold (-78°C) in the process."

...does it mean to rapidly change state and become a gas or has it something to do with flash point?

Elena Ghetti KudoZ activity Questions: 2611 (4 open) (30 without valid answers) (3 closed without grading) Answers: 2529 Italy
Local time: 19:58

Selected answer:yes that's what it means

Explanation:
the CO2 turns into a gas when the pressure is reduced to atmospheric.

Selected response from:

Robert Donahue (X)

Grading comment

many thanks!
4 KudoZ points were awarded for this answer

SUMMARY OF ALL EXPLANATIONS PROVIDED

5 +14

yes that's what it means

Robert Donahue (X)

3 +5

rapid change of state to a gas form

Michele Johnson

Answers

5 mins confidence:

peer agreement (net): +14

yes that's what it means

Explanation:
the CO2 turns into a gas when the pressure is reduced to atmospheric.

Robert Donahue (X)
Native speaker of:

English
PRO pts in category: 12

Grading comment

many thanks!

Peer comments on this answer (and responses from the answerer)

agree

Tony M

2 mins

-> Thanks Dusty

agree

Ken Cox: change instantaneously from a liquid to a gas

7 mins

-> Thank you Kenneth

agree

sarahl (X)

11 mins

-> Thanks Sarah

agree

Vicky Papaprodromou

20 mins

-> Thank you Vicky

agree

Erin McGann

27 mins

-> Thanks Erin

agree

jennifer newsome (X)

43 mins

-> Thank you Jennifer

agree

Saleh Chowdhury, Ph.D.

1 hr

-> Thank you Saleh

agree

Harry Borsje: aka adiabatic expansion, hence the temperature drop

2 hrs

-> Thank you Harry

agree

Can Altinbay: Absolutely. I'm not clear on how the other answer differs.

3 hrs

-> Thanks Can. I think Michele was seconding and adding the benefit of her background in chemical engineering. Not super necessary though, this being general science.

agree

nlingua: it refers to a rapid phase change - here is more info that you could possibly desire - http://www.flashsteam.com/Steam_Engine_Project.htm

4 hrs

-> Thanks nlingua, good link.

agree

Alfa Trans (X)

6 hrs

-> Thank you Marju

agree

gtreyger (X)

9 hrs

-> Thank you Gennadiy

agree

Saiwai Translation Services

12 hrs

-> Thanks STS

agree

Cindy Pajak

5 days

-> Thanks Cindy.

11 mins confidence:

peer agreement (net): +5

rapid change of state to a gas form

Explanation:
Flash point has to do with something else, namely flammability and ignition: the lowest temperature at which a liquid or solid gives off enough vapour to form a flammable air-vapour mixture near its surface. This is not what you're talking about.

You're talking about a fast change of state, from liquid carbon dioxide under pressure to the gas state at atmosphere. Pressurized liquid gases like this become gases again very fast, which I guess is why they refer to "flash" here.

Reference: education in chemical engineering

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Note added at 19 hrs 33 mins (2005-07-26 07:28:07 GMT)
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Re: comments above. There were no answers yet when I posted, and I have left my answer because I have the bad habit of including actual context and references :)

Michele Johnson
Germany
Local time: 19:58
Native speaker of:

English

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