PDF Publication Title:
Text from PDF Page: 159
for the Four-Step cycle and the Ideal Four-Step cycles. The pressure ratio for the Ideal Three-Step cycle is infinite, so this cycle can be seen as the limiting case of the Ideal Four-Step cycle, in which the pressure ratio approaches infinity. The conclusions with respect to changing the lower pressure and pressure ratio are: 1. Increasing the pressure ratio for the Four-Step and Ideal Four-Step cycles decreases the amount of energy required by the system per mole of product. 2. At the low pressure ratio limit for the Four Step cycle (below which no product is generated), an infinite amount of work is required per mole of product, as work is done, but no product is generated. A t this pressure ratio the second law efficiency is zero, as no useful work is done. 3. For the Four-Step cycle utilizing pressurization with product, decreasing the lower pressure decreases the amount of net work necessary per mole of product. This is also true when the lower pressure is below atmospheric and work is needed to extract the blowdown gas and the purged gas from the bed. 4. When the expansion energy is recovered, as in the Ideal Four-Step cycle, the net work required and the second law efficiency are a function of the pressure ratio, but not a function of the lower pressure. 5. Energy analyses of experimental results show that the second law efficiency can vary from 14.49% to 43.89% for achievable pressure ratios. This is a wide margin and indicates that energy savings are possible, without having to go to extreme measures. 143PDF Image | Energy Efficiency of Gas Separation Pressure Swing Adsorption
PDF Search Title:
Energy Efficiency of Gas Separation Pressure Swing AdsorptionOriginal File Name Searched:
ubc_1997-0009.pdfDIY PDF Search: Google It | Yahoo | Bing
CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
Heat Pumps CO2 ORC Heat Pump System Platform More Info
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |