Keel cooling

• see H:\Library\Articles and white papers\Naval architecture\Cat manuals > Cooling systems.pdf
• see H:\Library\Articles and white papers\Naval architecture > keelkooling 3ME-Bachelor-Buuren.pdf
• see PBB 111
• Fernsum calculates with:
  • minimum hull speed at full rated power (under full load)
  • maximum sea water temperature
  • heat rejection
  • fresh water flow rate
  • fresh water temeprature into cooler
  • fresh water temperature out or drop across cooler

Internet

Capaciteitsberekening koelpijpen

By Daniel Boekel

Pipe cooling:

• 1" = 26mm ID = 3,55 hp/m
• 1 1/4" = 35mm ID = 4,75 hp/m
• 1 1/2" = 40mm ID = 5,45 hp/m
• 2" = 52mm ID = 7,00 hp/m
• 2 1/2" = 65mm ID = 8,85 hp/m
• 3" = 80mm ID = 10,50 hp/m

Bottom (box?) cooling (box against shell): (dimensiosn: total length of box x height of box (section to be square or triangular))

• 200x6 = 10 hp/m
• 180x6 = 9 hp/m
• 160x6 = 8 hp/m
• 140x5 = 7 hp/m
• 120x5 = 6 hp/m
• 100x5 = 5 hp/m

Further:

• keep cross section area at least the same as cross section of engine connections
• st.st. is not a suitable construction material because of it's reduced heat transfer properties
• table received from a worker of Vooruit in Zaandam (NL)