[Stoves] Need help in designing a small refrigerator for rural hutscontinued.

[mtrevor]

On and off for the last 5 years or so there has been interest in the Thermo Electric Generators
TEGs to run say LEDs so it is surprising to me that there has not been more attention placed on the
Thermo Electric Cooler TECs using a peltier chip. This type of cooler has been commecially available
for years as the 12 volt Koolatron cooler.  It maybe that the nominal 5 amp drawn is not efficient 
enough. You can get far more cooling effect for the same 5 amps through a 12 volt Adler Babour or
Novacool kit. 

The cost of the 12volt kits are prohibative in most parts of the world so refocusing on TEC's using free
waste heat may be desireable 

Michael N Trevor
. 

  ----- Original Message ----- 
  From: nari phaltan 
  To: Discussion of biomass cooking stoves 
  Sent: Friday, January 18, 2013 4:19 PM
  Subject: [Stoves] Need help in designing a small refrigerator for rural huts.


  Hello!



  I am writing to you for your help in designing a small refrigerator for rural poor.



  In our work with the poorest families in western Maharashtra in India, we find that besides the need of good light and clean cooking technologies these hut dwellers also need a small refrigerator to keep overnight their milk (those with goats do not need one!) and leftovers so that they are not spoiled.



  We have been providing good light and clean cooking system to about 23 huts which do not have any electricity via our lanstove (www.nariphaltan.org/kerolanstove.pdf). Lanstove provides excellent light and in its heat cooks a complete meal for a family of 5. 



  We would like to explore the possibility of using the heat of lanstove (1500 W, flue gas temperature ~ 350degrees Celsius) to also run a batchwise absorption refrigerator unit which can cool a box of 1.5’ X 1.5’ X 1.5’ to about 100C for 10-15 hours. In the old times there were Icyballs but they used Ammonia/water mixture which is hazardous. I believe many new mixtures may have come now.




  Quite a few units running on evaporation of water have been developed but in humid weather they do not work and hence the choice of absorption system.



  This is a great technological challenge to develop a small, safe refrigerator running without electricity and will be a great contribution of technologists to the people at the bottom of pyramid. 



  I will be delighted to hear from you and also provide any other information you need.



  Warm regards,




  Anil



  -- 
  Nimbkar Agricultural Research Institute (NARI)
  Tambmal, Phaltan-Lonand Road
  P.O.Box 44
  Phaltan-415523, Maharashtra, India
  Ph:91-2166-222396/220945
  e-mail:nariphaltan at gmail.com
            anilrajvanshi at gmail.com

  http://www.nariphaltan.org




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