FLUID AND GAS SYSTEMS

Fluid and Gas Systems

Gibbs & Cox, Inc. has broad experience in the design of fluid and gas piping systems. This experience has been used most recently on the detail designs of DDG 51, DDG 51 Flight Upgrades, Royal Australian Navy (RAN) FFG Progressive Upgrade Program, PFG 2 class ships, and contract design of USCG Deepwater, T-AKE class ships, and Preliminary and Concept design of the Littoral Combat Ship (LCS).

Experience and capabilities include but are not limited to the following:

Computer aided engineering methods Pressure drop calculations Equipment arrangement & sizing Pipe stress and hydraulic analyses Modular packaging System automation

Automated Chilled Water System Test Module

Gibbs & Cox, Inc.'s experience includes the engineering analysis of shipboard piping systems both with manual and CAE methods. These analyses include preliminary and detail piping fluid flow pressure drop calculations, system component and equipment sizing verification, all engineering functions associated with development of system diagrams, and detailed piping flexibility and stress calculations. Piping systems which have been analyzed include oil systems (fuel, lube, controllable pitch propeller hydraulic), firefighting (firemain, Halon, AFFF, magazine sprinkling), cooling (centralized seawater, chilled water, electronic cooling water), specialty systems (refrigeration, wash down countermeasures), compressible fluids (HP air, LP air, bleed air, starting air, nitrogen), and ship support systems (machinery and non-machinery drainage, sanitary supply, potable water, vacuum sewage). Piping flexibility and detailed stress calculations have been conducted for hot and cold piping systems.

Pressure drop calculations are conducted using Design Data Sheet (DDS) 505-1, and/or several fluid pressure drop programs. These programs include the NAVSEA developed PIPLIQ, MILSPK and PIPAIR programs which have been enhanced by Gibbs & Cox, Inc., the commercially available FAAST program, and an in-house compressible fluid flow program, BLDAIR, initially developed for NAVSEA by Gibbs & Cox, Inc. for bleed air system analysis. Flexibility and stress analysis calculations are conducted using available commercial analysis programs (DYNAFLEX, CEASAR II, TRIFLEX) and/or manual calculations.