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Lodiev
20-04-2013, 07:57 PM
Solar cooling is an attractive idea because cooling loads and availability of solar radiation are approximately in phase. As the refrigeration system operates – small pump work neglected - without the need for mechanical or electrical power, it is independent of electrical grids and thus may prevent in remote rural regions the spoiling of agricultural products in storage due to the lack of refrigeration.

That is why there is a high demand for application of solar cooling for decentralised cold storage of food in the countries of the sun belt of the earth.
Solar cooling uses solar thermal energy to power a refrigerator, which in order to preserve food has to maintain temperatures lower than 5 C in the storage room.

Heat operated cooling systems are well known.
Ammonia-water absorption refrigeration systems are normally preferred for low temperature applications.
The heat input for this systems is required at temperatures higher than 90 C. Therefore high performance solar collectors are needed to supply a sufficient solar energy input.
This report presents two designed solutions using ammonia as refrigerant. The first refers to a 20 kW ammonia-water absorption system combined with evacuated tube collectors, which has been designed and preliminary successfully tested. Starting from this pilot plant, a cold storage depot has been designed to store fruit and vegetables at 4 C, powered by solar energy only. Refrigeration load is 60 kW.

This is a peace from a article I came upon searching for the know how of designing a solar absorption refrigeration plant.
I hope this will bring apon the right people to help me design such a plant.
Thanks
LodieV

Lodiev
25-04-2013, 06:03 PM
Come now people lets step into the next century with this as co2 is to dangerous we need to develop other ways thats green and safe.

TonyViet
16-05-2013, 05:12 AM
Come now people lets step into the next century with this as co2 is to dangerous we need to develop other ways thats green and safe.

i agree with you :)

nassrifi
20-05-2013, 09:20 PM
Hi there, did you think about lithium bromide as absorption media,
there are so much application in this type
think about it :)

Gary
21-05-2013, 02:34 PM
Absorption systems are notoriously inefficient. The better way to go is conventional systems powered by photo voltaic panels. PV panel prices have been dropping at a rate of 15% per year and this trend is expected to continue. That means the price is cut in half every 3-4 years. Eventually it will be foolish not to have solar panels on your roof.

nassrifi
23-05-2013, 07:15 PM
good thinking to have a solar panel on your roof, can you help us by suggesting any suppliers for such panels ??


regards

desA
25-05-2013, 11:34 AM
Agreed, Gary.

MikeHolm
27-05-2013, 07:12 PM
Gary is a convert......yea

Suppliers everywhere.....

Charlottecristi
28-05-2013, 09:38 AM
Installation need good quality of engineer.

Gary
29-05-2013, 03:55 PM
Gary is a convert......yea

Suppliers everywhere.....

A convert? When have I ever been opposed to saving money? And when did I not want to thumb my nose at the big monopolies?

Climate science is questionable and environmental politics is BS... but keep the prices dropping and eventually I will have panels all over my roof.

jamesmartin
25-06-2013, 07:26 AM
this is an excellent idea, we need to cut our emmision co2 and other green house gases.
every one must do their part to reduce co2 emmision.

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Gary
25-06-2013, 05:45 PM
this is an excellent idea, we need to cut our emmision co2 and other green house gases.
every one must do their part to reduce co2 emmision.


Really? Who are you to tell everyone what they must do?

MikeHolm
27-06-2013, 12:01 PM
Different motivations, same eventual conclusions. Go solar

gary, I hope you live inland and at a slightly higher altitude. The sea is approaching, slowly but approaching.

Gary
02-07-2013, 05:10 PM
Hmmm... how about solar panels directly running a DC powered air conditioner, which has a hot water desuperheater? No inverter. No batteries.