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Locally-made solar refrigerator

Posted by: Fabrizio Leonforte

Modified date: 10/12/2017

Locally-made solar refrigerator

Categories

Technology field of reference: Preservation, Powering

Relevant sectors: Nutrition, Food Security

Availability: National


Technology Description

The Solar Photovoltaic Refrigeration was designed by Politecnico di Milano to allow communities to assemble refrigerators using local materials. The electric and mechanical parts, that is a compressor (with a thermostat), a roll-bond evaporator pre-charged with refrigerant, and plug-in connectors for the refrigerant circuit, are provided in a compact kit that can be shipped almost everywhere. On the other hand, photovoltaic panels can be locally purchased, and the body is locally constructed. For pilot testing in Haiti, a carpenter was hired to build the refrigerator body – made of plywood –, providing internal insulation with an aluminium foil and polystyrene (insulating glue was not available). A metallic cage divided the refrigerated room in compartments, to facilitate the use by different households. In total, 6 refrigerators were assembled, each of them composed of 2 kits, with a photovoltaic panel (250 W), a battery (100Ah@12V) and a charge controller. Each refrigerator has a 500 liters capacity and 4 lockable compartments (one per family). Small buildings were built to house two refrigerators, and make it easy and safe to access for the households.

Location

Haiti

Year of implementation

2014


Fuel/Energy

Electric energy