[PSUBS-MAILIST] Ballast air

[Brian Cox via Personal_Submersibles]

Hank,
       I just meant the over pressure problem.  But one could have a high pressure pump to equalize the over pressure problem, if you were forced to use your ballast air for life support.  Assuming that your regular oxygen was empty and your scrubber wasn't working, if you used ballast air you would have to keep the pressure at 1 atm.  To do that you would have to continually pump out air at depth.  Not only would it be hard to do but you wouldn't have enough extra air to do it for any length of time.

  Yes I'm going to have plenty of breathing air around, like your emergency pony bottle.

brian

--- personal_submersibles at psubs.org wrote:

From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] Ballast air
Date: Thu, 12 Mar 2015 04:22:52 -0700


Brian,
I am not sure what you mean about extra air coming in.  You could have a small air tank inside also for emergency air.  I also have a 6 cuft bail out bottle with attached regulator from my previous sub.  Gamma came with a real nice set up.  The scuba regulator for emergency air is connected right to the main hp manifold right beside the pilot.  
Hank --------------------------------------------
On Wed, 3/11/15, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Subject: Re: [PSUBS-MAILIST] Ballast air
 To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
 Received: Wednesday, March 11, 2015, 11:36 PM
 
 Good point Hank,  but I'm not
 sure how I would deal with extra regular air coming in.
 
 Brian
 
 --- personal_submersibles at psubs.org
 wrote:
 
 From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
 To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
 Subject: Re: [PSUBS-MAILIST] Ballast air
 Date: Wed, 11 Mar 2015 05:37:11 -0700
 
 Brian,
 You must be planning to have a separate tank for emergency
 air for breathing, in case of fire etc.
 Hank
 --------------------------------------------
 On Wed, 3/11/15, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org>
 wrote:
 
  Subject: [PSUBS-MAILIST] Ballast air
  To: "PSubs" <personal_submersibles at psubs.org>
  Received: Wednesday, March 11, 2015, 2:50 AM
  
  I'm planning on having
  3 - 300cu ft air cylinders for my ballast supply air. 
  I noticed that if I get them filled with nitrogen it is
  cheaper than getting breathing or industrial air
  !   That is, until I get my own
  compressor. Brian
  
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