Open structure compressor is used for the compressor of automobile air-conditioner due to the drive by engine. This means shaft seal should be necessary for sealing of oil & freon gas of compressor inside. Now, lip type seal with elastic rubber lip and PTFE lip takes the high market share instead of mechanical seal and gains popular favor. More high speed , temperature and pressure are recently...

the existing measuremenjs of the viscosity of gaseous systems can be extended if use is made of statistical mechanics. in this work, we confine ourselves to the measurements of the viscosity of multicomponent mixtures of low-density gases. the method is applied to one sample of natural gas.

several processes have been proposed for natural gas liquefaction due to the vast utilization of lng as a reliable and relatively easy to use fuel. even though the merits and demerits of different process have been studied, a dearth of comprehensive technical and economical comparative investigation of these methods makes further broad examination a necessity. this article is presented to addre...

â liquefied natural gas (lng) is the most economical way of transporting natural gas (ng) over long distances. liquefaction of ng by using vapor compression refrigeration system requires high operating and capital cost. due to lack of systematic design methods for multistage refrigeration cycles, the conventional approaches of determining optimal cycle configuration are mostly based on trial-an...

the mixing behavior of the gas-liquid phase in three loop bioreactors was investigated. a gas-induced external airlift loop bioreactor (ealb), a forced-liquid vertical tubular loop bioreactor (vtlb) and a forced-liquid horizontal tubular loop bioreactor (htlb) were used for mixing studies as well as biomass production from natural gas. the effect of design parameters, riser to downcomer cross s...

this paper assesses the design guidelines of different classification codes for the liquefied natural gas carriers considering the effect of liquid sloshing. with regard the increasing importance of lng carriers in today’s marine transportation, and also considering that the marine accidents involve significant loss, classification societies by regulating national and international standards ai...

In 1975, Social Security beneficiaries were given the option of having their monthly benefit payments sent directly to their banks through an electronic funds transfer system. Since then, beneficiaries have been enrolling in this program in rapidly increasing numbers. At the end of 1976, fewer than 5 million beneficiaries--14 percent of the total--were enrolled in the program. By the end of 198...