Performance comparison of direct and flash steam generating heat pump using R1233zd(E) for waste heat recovery

Yishuang Liu, Bingdong Wang, Chuang Wang, Lixin Liu, Tianrui Sun, Yaoxiang Han and Ziwen Xing

Energy, 2025, vol. 326, issue C

Abstract: The steam generating heat pump, capable of producing steam from waste heat, is one of the promising technologies for energy conservation and emission reduction in the industrial sector. In this study, a simulation model for the steam generating heat pump is developed and validated using an experimental test rig with R1233zd(E) as the working fluid. The model is utilized to compare the performance of two SGHP system configurations. Each configuration has its own advantages: the steam production of FSGHP is, on average, 3.7 % higher than that of DSGHP, while the COP of DSGHP is, on average, 0.17 higher than that of FSGHP. A new performance evaluation index for SGHP, COPsteam, is proposed. The quantitative impacts of the steam compressor and preheater on the system performance are assessed. The results showed that the introduction of the steam compressor could increase COPsteam by up to 1.2, while the preheater could enhance COPsteam by up to 0.16.

Keywords: Steam generating system; Industrial heat pump; Waste heat recovery; Simulation model (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:326:y:2025:i:c:s0360544225018535

DOI: 10.1016/j.energy.2025.136211

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