Strategic Research and Innovation Agenda for Renewable ... - EGEC

7Strategic Research and Innovation Agenda for Renewable Heating & CoolingEnabling technologyType ofactivityResearchDevelopmentDemonstrationRelevance toRHC technologySTTESPCM TESTC TESHP:Working FluidsHP: Sorptionand other issuesHP: HeatexchangersBIOHVACSTShort TermNew surfaces, coatings, materials with increased performanceand lower costs (transparent covers with anti-reflective coatingsfor high optical transmission; switchable coatings to reduce thestagnation temperatures; high reflective and low weight materialsfor reflectors; new absorber materials with low emission coatings,temperature resistant super insulating materials, alternative hightemperature materials like polymers or rubbers for collector parts)Intensification of thermal conductivityNew sustainable TES materialsNew PCM that are not subject to subcoolingMaterials for TC heat storage at low temperatureSafe refrigerants with almost 0 GWPHigh temperature refrigerants for industrial compressionheat pumps (temp. up to 150 °C)Improved materials for magnetic refrigerationFundamental understanding of heat and mass transferat sub-atmospheric and super critical pressureNew working media for thermally driven heat pumpsfor elevated temperature levelsModified zeolites, SAPO, ALPOSorbent coating techniques developmentHeat exchanger surface modification NanostructuresImproved materials for heat exchangers at temperaturesabove 150 °C)Thermoelectric materials allowing for increased hot sidetemperatures (> 400°C) and suited joining technologies(insulation, bridging, contacting,…)Catalysts and active surfaces for enhancing combustion qualityCO 2 sorption liquidsMaterials for innovative pipe solutionsHigh temperature insulation materialFurther development and integration of materials resistantto high temperaturesImproved surfaces, coatings, materials with increasedperformance and lower costsPredominant impactMedium and Long TermNew, highly-porous sorption materials, especially usingadsorption chemistry and, possibly, ionic liquidsNew insulation materials / Vacuum insulationNew materials’ design based on numerical modellingFluids combining heat transfer and heat storageNew PCM with higher storage densityNew materials and/or mixtures that adjust the meltingtemperatureNew encapsulation and stabilisation methods for PCM,especially for salt hydratesDeveloping microencapsulated PCM at medium (300 ºC)and high temperatures (up to 1,000 ºC)Materials for TC storage of heat at medium and hightemperaturesInvestigation of performance of new working fluidsHigh temperature refrigerants for industrial compressionheat pumps (temp. above 150 °C)Metal hydridesSalt based chemisorbent developmentInvestigation of chemical reactions for the applicationto sorption processesDesigner Sorbent working pairsMetal Organic Framework materialsCharacterisation and development of new working fluidsThermoelectric materials allowing for increased hot sidetemperatures (> 600°C) and suited joining technologiesLiquid-desiccant technology for dehumidificationand cooling applicationsImproved multi-functional solar façade elements and systemswith additional functionalities and high flexibility regarding thearchitectural integrationAdvanced liquid or gaseous fluids for heat and cold transferPlastic material for BHE with increased thermalconductivity (cf. 4.4)GEOOptimum heat transfer fluid for BHE (cf. 4.4)Metal alloys or other material for pumps, pipes, etc. in applications above 180 °C, in high-pressure and highly corrosivegeothermal environmentTES Materials for storage containment New PCM in polymersHP: HeatExchangersBIOTESDHCCost effective low temperature corrosion resistant heatexchanger materials (for condensing operation modesof small and medium scale boilers)High temperature corrosion resistant heat exchanger materials(to increase steam parameters in large scale CHP plants, orto operate micro CHPs at elevated temperatures) suitable forcombustion of problematic biomass types. The materials shouldsolve problems such as creeping, cracking, TMF and corrosion,erosion, foulingCatalysts for reduction of harmful emissions from combustionprocessesCatalysts for steering syngas composition and for reductionof tar in syngas from gasification processesDevelopment of industrial manufacturing processes ofthermoelectric generators (for hot side temperatures >400°C)Innovative insulation solutions and materials for thermalenergy transportHeat exchangers based on advanced materials for applicationin severe operating conditions (e.g. corrosive media)Development of industrial manufacturing processes ofthermoelectric generators (for hot side temperatures >600°C)Flexible volume tanksTable: 19: Research and innovation priorities for materials science addressing the needs of RHC technology76