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This paper proposes and analyses a thermal storage system for air-conditioning with water as its working substance. Because water is a natural substance, the system has no environmental problems. The system consists of a steam compressor, a condenser, an expansion valve, a separator, two ejectors, an evaporator and a pump. Owing to the pump and ejectors, the compression ratio and the swept volume...
Iron ore reduction in fluidized bed and shaft furnaces were simulated to study the effect of reduction conditions on gas utilization ratio and essential gas requirements. The coal quantity required for smelting under different pre-reduction parameters is discussed. Optimum conditions of reduction of smelting with minimum energy consumption are considered.
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