Refrigeration: electric or gas

By Leigh Morris
Our Place in History
    Though the future belonged to mechanical refrigerators, it was unclear whether electric or gas/propane appliances would dominate that industry.
    Like iceboxes, gas/propane refrigerators had no moving parts, making them completely silent. Also like iceboxes, they would keep food cold even if the electricity was off. Energy was provided by a gas flame and liquid ammonia was the refrigerant of choice.

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