The study, which garnered significant attention at the conference, shed light on the prevailing temperature and pressure gaps found in cascade temperature and high/low sides in existing literature. To counter these challenges, the utilization of a cascade cycle involving two distinct refrigerants emerged as the most common approach.
Pergantis’ research focused on the implementation of R-32 and R-1233zd(E) as refrigerants for the low and high sides, respectively. By incorporating an open economization process on the high-side, the study demonstrated impressive performance enhancements compared to the baseline cycle. The results showed a remarkable increase of approximately 25% in COP and a 15% improvement in volumetric heating capacity (VHC).
The “Cycle Open Economization on High-Side” proposed by Pergantis proved to be the highlight of the research, showcasing its potential for revolutionizing high-temperature heat pump (HTHP) applications. The findings suggested that a two-stage screw compressor equipped with economization could significantly enhance the thermal efficiencies (TEs) of HTHP systems, particularly in scenarios where a readily available high-temperature heat supply is scarce.
The poster presented by Elias N. Pergantis stood out among a plethora of exceptional research projects showcased during the 14th IEA Heat Pump Conference 2023. The results where well highlighted, clearly presented and the poster was well structured. With its focus on improving the cost-effectiveness and performance of high-temperature heat pumps, Pergantis’ study has the potential to make a significant impact in the field, paving the way for more efficient and sustainable energy solutions.
The poster and a summary of the article will be presented in the next issue of the HPT Magazine.
About the IEA Heat Pump Conference:
The IEA Heat Pump Conference is a globally renowned event that brings together experts, researchers, and industry professionals to exchange knowledge and advancements in the field of heat pump technologies. With a focus on sustainable energy solutions, the conference plays a vital role in shaping the future of the heat pump industry.