As a distributed power supply system, the combined cooling, heating and power supply system of internal combustion generating units has high power utilization rate and good economy. In the actual operation process, Shandong Green Ring Power Internal Combustion Generator Unit can deal with many problems such as cylinder liner water temperature control, waste heat recovery and management together, and can complete many functions such as multi-grade heat source input, multi-variety heat user heat output and waste heat energy management.
Internal combustion generating units have the advantages of sophisticated skills, low cost, high power generation efficiency and good partial load characteristics. Therefore, it has great prospects to establish a combined cooling, heating and power supply system based on internal combustion generating units.
Because of the characteristics of gas-fired internal combustion engines, the combined cooling, heating and power supply system of internal combustion generating units generally adopts the mode of "electrically fixed heat", that is, to recover and use the corresponding waste heat on the premise of meeting the electric load demand of electric users. In the aspect of waste heat recovery, cylinder liner water and flue gas are used as waste heat sources, and their temperature varies greatly, and their quantity varies greatly. In the process of using the waste heat of cylinder liner water, it is necessary to control the water temperature of cylinder liner within a certain range, otherwise it will affect the safe operation of internal combustion generating units.
Generally speaking, the working temperature of cylinder liner water is in the normal range of 80 90 C. In the aspect of waste heat utilization, there is a problem of multi-heat users'heat supply in the CCHP system: domestic hot water, heat-driven refrigerators and hot storage tanks belong to different types of thermal users. Therefore, the CCHP system of internal combustion generating units can not only control the water temperature of the cylinder liner of internal combustion generating units, but also perform various functions such as multi-grade heat source input, multi-variety heat user heat output and waste heat heat energy management. It has the advantages of compact structure, safety and reliability.
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