基于喷射式热泵的热电联产供热系统

发布时间：2018-01-12 22:18

  本文关键词：基于喷射式热泵的热电联产供热系统　出处：《化工学报》2014年03期 　论文类型：期刊论文

  更多相关文章： 设计 集中供热 喷射式热泵 回收 实验验证

【摘要】：热电联产面临着两个严重问题:供热面积与质量的增加导致供热不足;电厂凝汽器循环冷却水存在大量低品质热量浪费。为同时解决这两个问题,提出了一种利用喷射式热泵强化集中供热的新型EDH-CHP系统。该系统从循环冷却水中回收余热,并将余热应用于集中供热;另外通过增大供热一次网的供回水温差提高原一次网的供热能力。与原系统相比,新型系统在热力首站和热力站分别增加一台喷射式热泵(HP1、HP2)。分别对两台喷射式热泵进行热力学分析及性能实验研究。分析结果表明:HP1和HP2均能有效提高系统性能。实验结果表明:HP1的COP可达1.4～1.9,HP2可降低一次网回水至35℃。经典案例分析表明:新型系统可增加50%供热能力或减少6%能源消耗。
[Abstract]:The cogeneration of heat and power is faced with two serious problems: the increase of heating area and quality leads to insufficient heating; There is a lot of waste of low quality heat in circulating cooling water of condenser in power plant. To solve these two problems at the same time. A new type of EDH-CHP system for enhanced central heating using jet heat pump is proposed. The system recovers the waste heat from the circulating cooling water and applies the residual heat to the central heating. In addition, the heat supply capacity of the original primary network is improved by increasing the temperature difference between the supply and return water of the primary heating network. Compared with the original system, the new system adds an injection heat pump HP1 to the first station and the station respectively. HP22). The thermodynamic analysis and performance experiment of two jet heat pumps are carried out. The results show that both HP2 and HP1 can effectively improve the performance of the system. The experimental results show that:. The COP of HP1 can reach 1. 4 ~ 1. 9. HP2 can reduce the backwater of the primary network to 35 鈩，

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