Ammonia-water hybrid absorption-compression heat pump (HACHP) based on Osenbrück cycle is a promising high-temperature heating technology. However, in the case of large temperature rise, the HACHP is faced with the problem that the compressor discharge temperature is too high, which greatly limits its application. In order to solve this problem, this paper introduces three two-stage HACHP cycles and thermodynamic analysis is conducted respectively. Results show that under the constraints of high pressure of 5000 kPa, compressor discharge temperature of 180 °C and vapor water mass fraction of 5%, the single-stage HACHP cycle cannot meet the heating requirement with the temperature lift of 40K, while three two-stage HACHP cycles can easily meet the needs of heating with the temperature lift of 40 K. When HACHP with flash tank intercooler is especially used, the heating with the temperature lift of 50 K can be achieved. Furthermore, this paper gives some typical combinations of ammonia mass fraction and circulation ratio for realizing high-temperature heating.

基于Osenbrück循环的氨水混合吸收压缩热泵（HACHP）是一种很有前途的高温加热技术。但是，在温升大的情况下，HACHP面临压缩机排气温度过高的问题，这极大地限制了其应用。为了解决这个问题，本文介绍了三个两阶段的HACHP循环，并分别进行了热力学分析。结果表明，在5000 kPa高压，压缩机排气温度180°C和蒸汽水质量分数5％的约束下，单级HACHP循环在40K的温度提升下不能满足加热要求，而三个阶段的HACHP循环可以轻松实现40 K的温度提升，从而满足加热需求。当特别使用带有闪蒸罐中冷器的HACHP时，可以实现温度提升50 K的加热。此外，本文给出了一些典型的氨气质量分数和循环比的组合，以实现高温加热。