The effects of greenhouse gases (GHG) on the growth of global warming, and increase of GHG and air pollutant emissions for energy production have forced the need of energy recovery which is normally wasted in industrial plant. The present research work focused on the GHG and air pollutant emissions reduction employing pressure waste energy recovery. Pressure break-down via Joule-Thomson valve i...

Nowadays, the energy crisis has forced the need to recover the energy which is normally wasted in industrial processes. Gas pressure reducing process in city or power plant gas stations is one of these processes in which the energy is wasted. This work is done by turbo-expanders in parallel with gas regulating valves. In electrical industry, these devices drive generators to produce electrical ...

Abstract In-cylinder expansion of internal combustion engines based on Diesel or Otto cycles cannot be completely brought down to ambient pressure, causing a 20% theoretical energy loss. Several systems have been implemented recover and use this such as turbocharging, turbomechanical turbo-electrical compounding, the implementation Miller cycles. In all these cases however, amount recovered is ...

This study designed an externally pressurized bearing and analyzed the rotordynamics of a turbo expander for hydrogen liquefaction plant. The expander, comprising turbine compressor wheel assembled to shaft, lowered temperature helium refrigerant. Its rated speed was 75,000 rpm, gas selected support rotor. Pressurized used as lubricant operation. To design rotor–bearing system, we conducted per...