Experimental evaluation of the azeotropic mixture R516A as an R134A drop-in alternative for moderately high-temperature heat pumps
- Autores: Ahmed Ali Shaker, Adrián Mota Babiloni, Angel Barragán Cervera, Joaquín Navarro Esbrí
- Localización: Libro de actas XI Congreso Ibérico y IX Congreso Iberoamericano de Ciencias y Técnicas del Frío Cytef2022: Avances en Ciencias y Técnicas del Frío - 11. Cartagena, España, 17-19 abril, 2022 / Antonio López Gómez (dir. congr.), José Ramón García Cascales (dir. congr.), Ginés Benito Martínez Hernández (dir. congr.), Arturo Esnoz Nicuesa (dir. congr.), Asunción Iguaz Gaínza (dir. congr.), Fernando Illán Gómez (dir. congr.), Francisco Javier Sánchez Velasco (dir. congr.), José Pablo Delgado Marín (dir. congr.), Ramón Antonio Otón Martínez (dir. congr.), 2022, ISBN 978-84-17853-55-6, págs. 244-249
- Idioma: inglés
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Resumen
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 ...
