深度回收燃气冷凝锅炉排烟余热实验研究与分析  

Experimental research and analysis of the deep recovery of the waste heat from gas condensing boiler

作　　者：刘高伟 陈晓林 崔红社[1] 周腾德 LIU Gaowei;CHEN Xiaolin;CUI Hongshe;ZHOU Tengde(School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao 266525,China;Qingdao Lianshengchuang Energy Technology Co.,Ltd.,Qingdao 266520,China)

机构地区：[1]青岛理工大学环境与市政工程学院,青岛266525 [2]青岛联盛创能源科技有限公司,青岛266520

出　　处：《青岛理工大学学报》2025年第2期99-106,共8页Journal of Qingdao University of Technology

基　　金：国家自然科学基金(52204039)。

摘　　要：针对燃气冷凝锅炉烟气余热残留问题,提出一种热泵式烟气余热回收系统。该系统以烟气为低温热源,通过翅片管式换热器和低温水回收烟气余热,经水源热泵将低位热能提升为高位热能向建筑供热。基于青岛市某办公建筑燃气冷凝锅炉供热系统,搭建了热泵式烟气余热回收系统实验台,研究了蒸发器出水温度、蒸发器侧水流量对系统性能的影响。结果表明:随着蒸发器出水温度的升高,烟气余热回收量增大,热泵性能系数COP增大;随着蒸发器侧水流量的增大,蒸发器出水温度升高,烟气余热回收量增大,热泵COP和EER增大。A heat pump-type flue gas waste heat recovery system is proposed to address the issue of the residue of flue gas waste heat from gas condensing boilers.The system uses flue gas as a low-temperature heat source,recovers flue gas waste heat through finned tube heat exchangers and low-temperature water,and then increases the low-level heat energy to high-level heat energy through a water source heat pump to provide heat to the building.Based on the gas condensing boiler heating system of an office building in Qingdao,an experimental platform for the heat pump-type flue gas waste heat recovery system was built to study the effects of evaporator outlet temperature and evaporator side water flow rate on the performance of the system.The results show that as the outlet temperature of the evaporator increases and the amount of flue gas waste heat recovery increases,and the COP of the heat pump increases;as the water flow rate on the evaporator side increases and the outlet temperature of the evaporator increases,the amount of flue gas waste heat recovery increases,and the COP and EER of the heat pump increase.

关 键 词：燃气冷凝锅炉 锅炉热效率 烟气余热回收 水源热泵 COP 

分 类 号：TU833.11[建筑科学—供热、供燃气、通风及空调工程]