Review on crack size distribution in refrigeration circuits, deduced leak rates and consequences for air-side releases
Safe deployment of R290 in heat pumps requires realistic leak assumptions. This work reviews crack size databases, deduces leak rates, and presents release testing experiences at Fraunhofer ISE on numerous prototypes. Implications for reliable test protocol development are outlined.
When & Where
Details
Format:
Lecture
Language:
English
Session description
The safe deployment of flammable refrigerants such as R290 in heat pumps requires realistic assumptions about potential leak scenarios. A critical input parameter for air-side release testing and safe distance determination is the leak rate, which is directly governed by the crack size occurring in the refrigeration circuit.
This presentation reviews available crack size databases that provide empirical data on crack size distributions in refrigeration circuits. However, a deduction of the actual leak rate that occurs is needed such that realistic and worst-case conditions could be identified, a crucial step preliminary to release testing.
The findings are contextualized with regard to their consequences for air-side release testing procedures and this was translated into sever ...
This presentation reviews available crack size databases that provide empirical data on crack size distributions in refrigeration circuits. However, a deduction of the actual leak rate that occurs is needed such that realistic and worst-case conditions could be identified, a crucial step preliminary to release testing.
The findings are contextualized with regard to their consequences for air-side release testing procedures and this was translated into sever ...
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