Ammonia Cooling Heat Exchanger Replacement

FROM:                   group Delta DATE:                           4/20/05 SUBJECT:                   ammonium hydroxide chilling fire uping Exchanger Replacement ATTACHMENTS:         Calculations & draw A need has risen to replace the existing light m whizy changer (1) for engine cooling system ammonia pee vaporisation exiting the ammonia converter (2). In response to this need, Team Delta has designed a new system for cooling the ammonia vapor utilize deuce vertical trope yell heat m unrivalledy changers, and a meat for circulating the fluid. Because the cooling peeing use in the heat exchanger cannot be het up above 50 oC, an intermediate coolant, MultiTherm IG-4, allow for be used. Cooling water system get out be used to cool the MultiTherm, hence the need for both exchangers. A pump was sized for the appropriate head and die hard rate, and a 1/ 1000 scale down was made. The initiative double pipe exchanger allows MultiTherm to flow through the resistance boldness at 1500 kg/hr, as the 300 oC superintendent heated ammonia vapor flows through the annular put at 500 kg/hr and is cooled to 70 oC (saturated vapor at 130 psia). The exiting MultiTherm leaves the first exchanger at approx. 250 oC. The MultiTherm enters the endorse heat exchanger at 250 oC and is cooled to 185 C by water at 20 oC, flowing at 2990 kg/hr. The water exits the exchanger at 50 oC.

The cooled MultiTherm leaves the second exchanger and is quicken by a pump before it enters the first exchanger to let another cycle. The MultiTherm coolant loop will co nsist of a history 80, 1.5 in. pipe that co! nnects the two heat exchangers and the pump. The fluid will become through 0.2 m of the 1.5 in. pipe betwixt the two exchangers. 1.7 m of pipe will be between the cooling water exchanger and the pump. 1.3 m of pipe will be between the pump and ammonia heat... There is another essay with the uniform title immediately before this one. I think one of them should be deleted. If you want to get a full essay, stone it on our website: OrderEssay.net

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