Hybrid Solar Refrigeration

Technology Review reports on Promethean Power Systems, their:

...design uses off-the-shelf components: silicon PV panels, thermoelectric modules, and a compressor-based refrigeration unit. The company's control system directs the two cooling components to work together so that they squeeze as much juice out of the solar panels as possible, Sorin Grama the cofounder explains. Early in the morning and late in the afternoon, when the amount of sunlight is low, the solar panels won't generate enough power to run the compressor. But there will be enough solar power to run the thermoelectric modules, which would generate cooling until the compressor kicks in. Around midday, when the solar panels are working full throttle, the thermoelectric modules will use the extra juice that the compressor doesn't need to provide additional cooling...[continue reading]

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