January 24, 2022, 06:16:50 AM
Forum Rules: Read This Before Posting


Topic: Heat and chemistry  (Read 3391 times)

0 Members and 1 Guest are viewing this topic.

Offline Aagomes

  • Very New Member
  • *
  • Posts: 2
  • Mole Snacks: +0/-0
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

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 26925
  • Mole Snacks: +1746/-403
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
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.
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info, pH-meter.info

Offline Bakegaku

  • Full Member
  • ****
  • Posts: 269
  • Mole Snacks: +20/-5
  • Gender: Male
  • Hydrogen peroxide is my miracle cure to everything
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?
"True knowledge exists in knowing that you know nothing"
-Socrates

"I see, I forget.  I hear, I remember.  I do, I understand"
-Confucius

"Nothing will benefit human health and increase chances for survival of life on Earth as much as the evolution to a vegetarian diet."
- Albert Einstein?

"American cartoons place characters in situations; anime
places situations around characters.  Anime characters
are not like fictional characters but more like fictional
people; their actions stem directly from their personalities,
and not just as a means to move the story's plot
forward.  We are made to sympathize with them, and
not simply be entertained by them."
~John Oppliger~

Offline Aagomes

  • Very New Member
  • *
  • Posts: 2
  • Mole Snacks: +0/-0
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

Sponsored Links