Process for recovering exhaust heat

Details Process for recovering exhaust heat Process for recovering exhaust heat

1981-07-22

1984-05-15

Ostrager, Allen M.

Power plants

Motive fluid energized by externally applied heat

Process of power production or system operation

252 67, F01K 2510

Patent

active

044480253

ABSTRACT:
The present invention relates to a process for recovering the exhaust heat using the working fluid of the toluene (or benzene)-water system in the vapor cycle, when the moderate heat energy of 400.degree.-750.degree. C. is converted into work.
In practice, in order to obtain the maximum overall thermal efficiency .eta.m, the working fluid of the Rankine cycle in the recovery of exhaust heat of the temperature of 400.degree.-700.degree. C. is suitable to be the mixture of toluene (or benzene) and water containing 20-80 mol. % of water, while the working fluid of the reheating cycle in the recovery of exhaust heat of the temperature of 600.degree.-750.degree. C. is suitable to be the mixture of toluene (or benzene) and water containing 45-90 mol. % of water in considerations of the thermodynamic efficiency of vapor cycle, the performance of the exhaust heat boiler and other factors.

REFERENCES:
patent: 3234734 (1966-02-01), Buss et al.
patent: 3237403 (1966-03-01), Feher
patent: 3282048 (1966-11-01), Murphy et al.
patent: 3516248 (1970-06-01), McEwen
patent: 3841099 (1974-10-01), Somekh
patent: 3940939 (1976-03-01), Davis
patent: 4232525 (1980-11-01), Enjo

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