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The Rampressor Competitive Advantages

The four principal advantages of shock compression when compared to existing compressor technologies are as follows: it can achieve exceptionally high compression efficiency; it is capable of producing very high single stage compression ratios; its simplicity and size make it less expensive to manufacture; and it offers the opportunity for significant waste heat recovery.

Current large compressor markets are dominated by centrifugal and axial designs.

Centrifugal compressors are typically applied at ratios of 1.8 to 2.8 per stage with adiabatic efficiencies that range from 82 to 85%. Centrifugal designs can be applied up to pressure ratios of 4.0 per stage in 17-4PH stainless steel with adiabatic efficiencies of 82 to 83%, and up to a pressure ratio of 4.5 per stage in titanium with adiabatic efficiencies of 75 to 80%.

Axial compressors are typically designed to develop pressure ratios of 1.2 to 1.4 per stage, and require 4 to 10 stages to achieve usable industrial pressure ratios. Although single stage axial efficiencies can be greater than 90%, the integrated overall compressor efficiency is in the range of 82-90%. In contrast, Ramgen's shock compression has the potential to develop compression ratios from 2.0 to 15.0 per stage with an associated adiabatic efficiency of 85-90%.

Reduced to practice, the Ramgen compression technology can "de-stage" its product offerings, greatly simplifying a design and reducing its cost versus competition, and do so without sacrificing efficiency. The competitive advantages and opportunities for Ramgen's technology are represented in the following two graphics:

This feature of shock compression is further magnified when applied to heavier molecular weight gases, such as CO2. In these situations, inlet Mach# design constraints further limit conventional compressor design pressure ratios as will be shown in the CO2 compressor application section of this website.


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