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Thread: Discussion on Solar refrigerator : How to build ?

  1. #1 Discussion on Solar refrigerator : How to build ? 
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    i want to make a solar refrigerator of better efficiency. i belong to india and their is 45 degree celcious temp out side in summer day. so it is also necessary to child stuff in summer days. solar refrigerator may be a better solution to save electricity and money.
    i only know basic of refrigration ..i want a detailed discussion on solar refrigrator.


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    Building a solar refrigerator first of all demands not very much. You have to get yourself acquainted with the rudiments of p-v or any other system which may be readily sourced in India. Looking at the temperature range you have given, that's a very good resource and i think would be very suitable for the project if properly harnessed. I must say that I am not well grounded in issues like that but the little knowledge i have i think it is feasible. Infact a professor in my department here in Nigeria has done some work to that regard and i believe his works may be of interest to you. In his research, calcium chloride was used due to its ability to absorb ammonia at ordinary temperatures. A solar collector containing calcium chloride (which has absorbed ammonia) when exposed to the sun is heated up to a very high temperature which causes gas to leave the salt (absorbent) and act as refrigerant. I have just given you a tip of the iceberg


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  4. #3  
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    Quote Originally Posted by Ezegreat View Post
    I have just given you a tip of the iceberg
    You mean, the tip of the icechest.
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    Interestingly,

    The ancient Pachatantra states that "water is cool when it contains salt". ...

    The ancient Indians produced ice using vaporization and radiation combined.
    Source: Die Technik des Altertums, Albert Neuburger (1919)

    You mention solar refrigeration, but other methods work in hot climates, namely vaporization zeer pots in Africa and matkas and surahis in India.
    Grief is the price we pay for love. (CM Parkes) Our postillion has been struck by lightning. (Unknown) War is always the choice of the chosen who will not have to fight. (Bono) The years tell much what the days never knew. (RW Emerson) Reality is not always probable, or likely. (JL Borges)
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