The importance of an extensive and accurate experimental activity has been recalled many times in this book, for example, in connection with the implementation of reliable numerical tools. In this chapter, we will present some experimental results related to ejectors, refrigeration systems containing ejectors, or physical processes which are relevant for ejectors development.
Unfortunately, the huge amount of data routinely collected by the industries that produce ejectors (for a few names, see Chap. 1) are unavailable or confidential and hence cannot be included here. Therefore, we will deal only with experimental data coming from laboratory prototypes built for research purpose. A caveat on these results concerns the size: in most cases prototypes tend to be small. In principle, this should pose a penalty on the measured performance. Even without citing real data from industry, we may at least certify that, invariably, steam ejectors used for industrial use show a clear decreasing trend of specific consumption of motive steam as size increases.
KeywordsEjector testing Chiller efficiencies Flow visualization Industrial prototype
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