Low-temperature waste heat utilization technology in distributed combined cooling,heating,and power(CCHP)systems
There is a large amount of low-temperature waste heat in the combined cooling,heating and power(CCHP)system,and the efficient use of low-temperature waste heat can improve the energy utilization efficiency of the system and the thermal efficiency of CCHP,and reduce energy consumption and environmental pollution.The paper reviews the common low-temperature waste heat utilization technologies in CCHP systems.The low-temperature waste heat utilization mode is divided into same-level utilization and upgraded utilization,the same-level utilization is mainly for the heating of users with similar energy levels,and the upgraded utilization mainly includes waste heat power generation technology,heat pump/refrigeration technology,and dehumidification technology.The paper summarizes the principles,categories,advantages and disadvantages of various low-temperature waste heat upgrading and utilization technologies,as well as structural optimization,equipment transformation,and thermal system coupling,and analyzes the potential of each technology in improving energy utilization efficiency,CCHP thermal efficiency and energy saving.
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维普
