PDF Publication Title:
Text from PDF Page: 025
IEA Implementing Agreements Heat Pump Programme – Annex 35 Industrial Energy-related Systems and Technologies – Annex 13 R&D high temperature heat pumps EDF France in cooperation with industry is working on the development of high temperature industrial heat pumps with new working fluids to reach temperatures higher than 100 °C: Alter ECO Project This project includes the development and industrial testing of HPs capable of operating at 140 °C in condensation mode, equipped with scroll compressors and working with a new blend. Publication: Experimental results of a newly developed very high industrial heat equipped compressors and working with a new blend refrigerants. temperature pump (140 °C) with scroll The compressor power is 75 kW. The machine performances have been characterized to demonstrate the technical feasibility. For each evaporation temperature (from 35 to 60 °C by step of 5 °C), the condensation temperature is increased by step of 5 °C from 80 up to 140 °C. Test campaigns over 1,000 hours were carried out in industrial-like conditions to demonstrate the reliability. The efficiency of heat recovery up to 125 °C is demonstrated. Good performances are obtained. For higher temperatures, the technological feasibility is demonstrated but some further developments have to be carried out to increase the efficiency and the economic viability: 2 stage compressors (it is designed for a given pressure ratio), expansion valve, etc. All this demonstrates the prototype reliability and the capacity to use this newly developed machine for industrial purposes. PACO Project Heat pump using water as a refrigerant is an interesting solution for waste heat recovery in industry. Water is nontoxic, non- ignitable and presents excellent thermodynamic properties, especially at high temperature. Water HP development is complex, notably due to water vapor compression. The compression ratio of centrifugal and lobe compressors is low. It prevents gas temperature from rising more than 20 °C. For now, the only technical solution able to overcome this drawback with moderate costs is to put two lobe compressors in series. However, theses compressors are less reliable than the others and their efficiency is low. Thus, the development of a novel water compressor is needed. Screw and centrifugal compressors IEA Heat Pump Programme 9 www.heatpumpcentre.orgPDF Image | Industrial Heat Pumps
PDF Search Title:
Industrial Heat PumpsOriginal File Name Searched:
annex-xiii-part-a.pdfDIY PDF Search: Google It | Yahoo | Bing
CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
Heat Pumps CO2 ORC Heat Pump System Platform More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)