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Performance assessment of high-temperature heat pump in an integrated energy system.

Number: 2585

Author(s) : GANESAN P., RYSSDAL S. T., EIKEVIK T. M., WANG R., HU B.

Summary

High-temperature heat pumps (HTHP) are known for space and industrial process heating applications. Research on the development of HTHP using natural refrigerant is at a very early stage. In the present work, an HTHP was modeled using MATLAB as part of an integrated energy system. The zero ODP and GWP ammonia (R717) was used as the refrigerant. The main objective of this work is to investigate and optimize the performance and stable operation of the heat pump in an integrated energy system consisting of a PVT system, a battery, thermal energy storage, and a district heating system and to develop the green HTHP. A vapor compression heat pump system with two parallel compressors was used for simulation. The operation of the system was simulated for one year in three Chinese cities: Shanghai, Lanzhou, and Beijing. The heat pump and thermal storage had a maximum capacity of 255.7 kW and 1000 kWh, respectively. The results from the simulations showed that the Heat pump (HP) was able to provide a good temperature lift of 72°C with a condensation temperature of 96°C. The Coefficient of performance (COP) of the HP was 3.55. The system behaved similarly in the three cities during the summer months when temperatures were high and there was little or no demand for space heating. In the colder months, the heat demand in Lanzhou and Beijing was higher than in Shanghai. The gap between available heat and demand was large in Lanzhou and Beijing. It was found that further optimization of the PV panel area, battery, and thermal energy storage is needed to provide a more stable supply of heat and electric power to the HP system.

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  • Original title: Performance assessment of high-temperature heat pump in an integrated energy system.
  • Record ID : 30030783
  • Languages: English
  • Subject: Technology
  • Source: 2022 Purdue Conferences. 19th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2022

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