Experimental evaluation of the azeotropic mixture R516A as an R134A drop-in alternative for moderately high-temperature heat pumps
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Title
Experimental evaluation of the azeotropic mixture R516A as an R134A drop-in alternative for moderately high-temperature heat pumpsDate
2022-04-17Publisher
Universidad Politécnica de Cartagena. Ediciones UPCTISBN
9788417853556Bibliographic citation
Al-Sayyab, Ali Khalid Shaker; Mota Babiloni, Adrián; Barragán Cervera, Angel; Navarro Esbrí, Joaquín. Experimental evaluation of the azeotropic mixture R516A as an R134A drop-in alternative for moderately high-temperature heat pumps. En: XI Congreso Ibérico y IX Congreso Iberoamericano de Ciencias y Técnicas del Frío Cytef2022. Avances en Ciencias y Técnicas del Frío - 11. Cartagena: Universidad Politécnica de Cartagena, 2022. Pp. 244-249. ISBN: 978-84-17853-55-6Type
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Abstract
The moderately high-temperature heat pump (MHTHP) is a market with a great potential to reduce greenhouse gas emissions from the heating sector. However, future proof MHTHPs cannot be based on hydrofluorocarbons with ... [+]
The moderately high-temperature heat pump (MHTHP) is a market with a great potential to reduce greenhouse gas emissions from the heating sector. However, future proof MHTHPs cannot be based on hydrofluorocarbons with high global warming potential (GWP). Fourth-generation refrigerants with GWP below 150 are required. This work experimentally investigates the new azeotropic mixture R516A as a drop-in alternative to R134a, with a low GWP (142). Measurements are taken from a test rig at different steady-state operating conditions. The evaporating temperature is 7.5 ºC, 15 ºC and 22.5 ºC, and condensing temperature varies between 55 ºC and 75 ºC, at steps of 5 ºC. R516A presents a lower discharge temperature (average reduction of 7 ºC), which provides a safer operation for the compressor and increases its lifespan. R516A heating capacity reduction is 13.5% on average, with a reduced heating effect and comparable compressor power consumption. R516A shows a 12% COP reduction at higher evaporating temperatures. [-]
Description
Ponència presentada al XI Congreso Ibérico y IX Congreso Iberoamericano de Ciencias y Técnicas del Frío Cytef2022. Avances en Ciencias y Técnicas del Frío - CYTEF 2022. Cartagena (Spain), 17-19 abril, 2022
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© 2022, Los editores
© 2022, UNIVERSIDAD POLITÉCNICA DE CARTAGENA
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info:eu-repo/semantics/openAccess