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Current district heating systems based on natural gas-fired boilers have lower primary energy efficiency due to its higher-temperature exhaust flue gas, and it cannot meet high-density heat load demand by the existing primary heating network. A new district heating system based on natural gas-fired boilers with absorption heat exchangers is presented to increase its primary energy efficiency and meet...
In China, coal-fired boilers and coal-fired combined heat and power plants (CHP) are primary heat sources for district heating, and there is severe heat loss due to flue gas flowing out at a high temperature level. This paper introduces an approach to regather the exhausted heat contained in the coal-fired flue gas based on direct-contact heat exchanger and absorption heat pumps (DAHP). This paper...
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