Natural cold source cold storage utilizes low temperature from outdoor air in cold seasons to reduce unit runtime. Air intake and exhaust ducts with filtering system bring cold outdoor air into warehouse under proper conditions. Temperature and humidity sensors judge whether outdoor air meets the requirement for natural cooling. When outdoor temperature rises above threshold, the system switches back to mechanical refrigeration automatically. Air filter removes dust, pollen and particles to protect goods quality inside cold room. Refrigeration factory evaluates local climate data before designing natural cold source system. Xindacool integrates natural cooling module as optional configuration for northern region cold storage. Uncontrolled high humidity outdoor air entering warehouse will cause heavy frosting on air coolers. About 34% of seasonal energy saving projects achieve obvious benefit with natural cold source system. Duct insulation and anti-freezing treatment prevent condensation and ice formation inside air passages. Automatic damper cuts off natural air channel when mechanical refrigeration starts working. Natural cold source system reduces annual power consumption and lowers operating cost of cold storage.
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