A heat-powered ejector chiller working with low-GWP fluid R1233zd(E) (Part 1: Experimental results)
| Autor: | Adriano Milazzo, Federico Mazzelli, Jafar Mahmoudian, Andrea Rocchetti |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Chiller
business.industry Vapor pressure 020209 energy Mechanical Engineering Nuclear engineering Evaporation 02 engineering and technology Building and Construction Injector law.invention Generator (circuit theory) 020401 chemical engineering law Air conditioning Ejector chiller CRMC R1233zd(E) Experimental method Drop-in low-GWP fluid 0202 electrical engineering electronic engineering information engineering Environmental science Working fluid 0204 chemical engineering Saturation (chemistry) business |
| Zdroj: | International Journal of Refrigeration. 121:1-9 |
| ISSN: | 0140-7007 |
| DOI: | 10.1016/j.ijrefrig.2020.10.015 |
| Popis: | A prototype ejector chiller with nominal cooling power of 40 kW, designed according to the “CRMC” criterion, has been tested by our research group since 2011. The prototype has undergone several refinements and finally has been upgraded to R1233zd(E), which is non-flammable, has low-GWP and favourable thermodynamic properties, i.e. “dry-expansion” and moderate pressure at generator. In terms of saturation pressure curve, the new fluid is similar to R245fa, which was previously used in the prototype. Hence, R1233zd(E) has been basically used as a “drop-in” replacement. The ejector chiller was tested at different evaporation temperatures (2.5 to 10°C), typical of air conditioning applications. Saturation temperatures at generator from 95 to 105°C have been selected as representative of waste-heat recovery. The experimental findings prove that the CRMC ejector has a satisfactory performance with the new working fluid. |
| Databáze: | OpenAIRE |
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