Difference between revisions of "Keel cooling"
From NavykI
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[http://www.scheepspraet.net/artikel/koelpijp.html Capaciteitsberekening koelpijpen] | [http://www.scheepspraet.net/artikel/koelpijp.html 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 | ||
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| + | 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 | ||
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| + | 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) | ||
[[Category: Marine Engineering]][[Category: Systems]] | [[Category: Marine Engineering]][[Category: Systems]] | ||
Revision as of 09:45, 23 June 2011
- 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)
