[Date Prev][Date Next]
[Chronological]
[Thread]
[Top]
RES: RES: [PSUBS-MAILIST] Ambient pressure design considerations
Hi Doug,
what a nice page ! I can't stop reading !
Me too (about recommendation in the NOAA Dive Manual)
Jorge L.
-----Mensagem original-----
De: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org]Em nome de
DJACKSON99@aol.com
Enviada em: terça-feira, 4 de novembro de 2003 03:14
Para: personal_submersibles@psubs.org
Assunto: Re: RES: [PSUBS-MAILIST] Ambient pressure design considerations
Hello Stan
I'd sure like to know the recommendation in the NOAA Dive Manual for 2
persons. Seems to me that 2 people in an ambient submersible maintaining 30
feet and exhaling into an exhaust line would do better than 2 scuba divers
swimming and enduring the cold. Would that not be true? If you were not
exhaling into an exhaust line, I'd venture to guess that the answer is
somewhere around 3 cfm per person.
Also SportSub now has a Dry Ambient model. http://www.ivccorp.com/
Doug Jackson
http://jackson.parcabul.com/sub/index.html
In a message dated 11/3/2003 8:35:12 PM Eastern Standard Time, SFreihof
writes:
> Hi Jorge;
>
> To be correct, the Sport Sub is an ambient semi-dry sub. It is not a dry
sub any more than it is a wet sub. The cabin itself serves as the ballast
tank, and the water level in the cabin determines its buoyancy. You sit in
water with your head in a bubble. There is no hatch. The bottom is open.
To enter the sub you have to dive under it and swim up into it.
>
> Conversely, an "ambient pressure dry" sub has a dry cabin. The term both
describes and defines the design.
>
> The Sport Sub has a 'continuous flow' cabin air flush, but the drawback is
that the air consumption is high. The flow rates required per person have
been studied in underwater habitats and are detailed in the NOAA Dive Manual
which I can look up for you if you'd like. The point is you have to carry a
lot of air to do it. Breath moisture is a minor consideration because you
are operating in a humid environment with warm air encapsulated in a cool
shell. Condensation is
> unavoidable, so plan on it.
>
> Stan
---
Incoming mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.535 / Virus Database: 330 - Release Date: 01/11/03
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.535 / Virus Database: 330 - Release Date: 01/11/03