【摘要】 传统热电厂的循环冷却水中含有大量的低品位余热，利用热泵技术对其进行回收，能够显著提升供热系统的能源利用效率，有利于实现节能减排和“碳中和”目标。设计基于单、双吸收式热泵机组的余热回收供热系统，旨在有效利用循环冷却水中的余热，增加供热能力并分析系统性能。结果表明，与传统供热系统相比，两种余热回收供热系统均可显著回收循环冷却水的热量，提高系统供热量并大幅减少能源消耗，带来可观的经济收益；双吸收式热泵机组系统展现出更优异的热力性能，具备显著的节能减排优势。分析循环冷却水入口温度和一次网回水温度对双吸收式热泵机组性能的影响，发现循环冷却水温度对系统性能影响较大，随着循环冷却水温度的升高，系统的供热量增加比例、节约标煤量和新增供热面积均增加，而一次网回水温度对系统性能的影响较小，随一次网回水温度的升高，系统的供热量增加比例、节约标准煤量和新增供热面积几乎不变。更多还原

【Abstract】 The circulating cooling water of traditional thermal power plants contains a large amount of low-grade waste heat. Using heat pump technology to recover it can significantly improve the energy utilization efficiency of heating system, which is conducive to achieving the goals of energy saving, emission reduction and ’carbon neutrality’. In this paper, a heat recovery heating system based on single and double absorption heat pump units is designed, aiming at effectively utilizing the waste heat in circulating cooling water, increasing the heating capacity and analyzing the system performance. The results show that compared with the traditional heating system, the two kinds of waste heat recovery heating systems can significantly recover the heat of circulating cooling water, increase the heating capacity of the system,greatly reduce the energy consumption and bring considerable economic benefits. The dual absorption heat pump system shows better thermal performance and has significant advantages in energy saving and emission reduction. The influence of circulating cooling water inlet temperature and primary network backwater temperature on the performance of double absorption heat pump unit is analyzed. It is found that the circulating cooling water temperature has a great influence on the system performance. With the increase of circulating cooling water temperature, the heat supply ratio, standard coal saving and new heating area of the system increase, while the primary network backwater temperature has little influence on the system performance. With the increase of primary network backwater temperature, the heat supply ratio, standard coal saving and new heating area of the system are almost unchanged.更多还原