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Topic: Heat and chemistry  (Read 3707 times)

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Offline Aagomes

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Heat and chemistry
« on: December 26, 2006, 07:34:30 PM »
Hello,

I need some help. I work in aquatic industry and we ship all around the world. As we handle tropical marine fish our main goal in shippment is to provide a stable temperature in the carton box. We use hot water in bags with all the fish bags, to provide a heat source. But i was thinking is there any liquid, Gel or another form that manage to provide heat for a long time ? 24-48 hours.

Sincerely

Antonio Gomes

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Re: Heat and chemistry
« Reply #1 on: December 26, 2006, 07:59:54 PM »
As long as we are talking just about storing heat water has one of the the highest specific heats. IIRC you may think about MgSO4.10H2O as well due to the latent heat of crystallization. Look for the systems used to store thermal energy in solar houses.
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Offline Bakegaku

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Re: Heat and chemistry
« Reply #2 on: December 26, 2006, 09:04:59 PM »
For that sort of period I'd suggest optimizing your insulation.  What's preventing you from using some sort of heating system, like electricity?
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Offline Aagomes

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Re: Heat and chemistry
« Reply #3 on: December 27, 2006, 05:09:26 PM »
Hello,

 My problem using electricity is because of it's high costs (every box that we dispatched would have to have a eletric system) and the risk of a bag to release water might damage the system).

Hmm thank you both, i will try to look up about the systems used. But i think they store energy in battery type system. Guessing here. Hmm MgSO410H20 seems a bit expensive though got check.

  Thank you

Antonio Gomes

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