Energy, Resources and Environment: Papers Presented at the by S. W. Yuan

By S. W. Yuan

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Additional info for Energy, Resources and Environment: Papers Presented at the First U.S.-China Conference on Energy, Resources and Environment, 7-12 November 1982, Beijing, China

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D i s c h a r g e s of toxic and other h a z a r d o u s w a s t e s from t h e s e s a m e and o t h e r s o u r c e s i n t o i n l a n d and c o a s t a l w a t e r s w a s s i m i l a r l y p o l l u t i n g this vital r e s o u r c e . T h e h a z a r d s to h u m a n h e a l t h and the n a t u r a l e n v i r o n m e n t posed by this spectrum of p o l l u t a n t s p r e c i p i t a t e d the i m p o s i t i o n of c o n s t r a i n t s by all l e v e l s of g o v e r n m e n t on the g e n e r a t i o n and d i s p o s a l of these p o l l u t a n t s from w h a t e v e r source ( 1 0 ) .

These e n g i n e s w e r e i n i t i a l l y c h a r a c t e r i z e d by l o w c o n v e r s i o n e f f i c i e n c i e s r a n g i n g up to 5% f o r i n t e r n a l c o m b u s t i o n , and s u b s e q u e n t l y n e a r *\ 0% f o r s t e a m l o c o m o t i v e e n g i n e s . Thereafter engine developments increased e f f i c i e n c i e s to the range of 25 to 50% ( 1 ) . Further a t t e n t i o n w i l l be devoted to the i m p o r t a n c e of i m p r o v i n g e n g i n e e f f i c i e n c i e s l a t e r in t h i s p a p e r .

One of the most promising is the Direct Injection Stratified Charge or DISC engine, now in the prototype stage. It is a lean-burn engine, operating at high compression ratios in the range of 11 to 11-1/2. It offers fewer emission problems than current engines and can operate at the octane levels of today's engines. But the engine will really come into its own if we turn to a more exotic option—methanol. With a research octane rating of 110, a methanol-fueled DISC engine could attain efficiencies 50 percent higher than a conventional gasoline engine.

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