本发明公开了一种双燃料动力船LNG冷能梯级综合利用系统,采用横向三级嵌套的朗肯循环发电将LNG燃料冷能逐级利用发电,并且将第三级跨临界CO2朗肯循环与蓄冷循环、冷库+空调循环并联,从而共同形成实现春、秋、冬季需用的发电+冷库的冷能利用,实现夏季需用的发电+冷库+空调的冷能综合利用,实现春、秋、冬季短时停船停机使用蓄冷系统维持冷库的正常运转和实现夏季短时停船停机使用蓄冷系统维持冷库和空调的正常运转四种系统的工作方式。通过有效整合LNG/柴油机双燃料主机缸套冷却水回路和高温烟气冷却回路,根据不同时空的工况条件,系统能通过相应功能模块的调节,在满足船舶需求的基础上提高冷综合利用率,降低营运成本。
The invention discloses a dual-fuel power ship LNG cold energy gradient comprehensive utilization system. The dual-fuel power ship LNG cold energy gradient comprehensive utilization system adopts a transverse three-stage nested Rankine cycle to generate electricity by utilizing LNG fuel cold energy step by step, and a third-stage transcritical CO2 Rankine cycle is connected in parallel with a coldaccumulation cycle and a refrigeration house and air conditioner cycle; and therefore, power generation needed in spring, autumn and winter and cold energy utilization of the refrigeration house arejointly achieved, and power generation needed in summer, cold energy comprehensive utilization of the refrigeration house and cold energy comprehensive utilization of the air conditioner are achieved,and the working modes that a cold storage system is used for maintaining normal operation of the refrigeration house in spring, autumn and winter short-time ship stopping and stopping and the cold storage system is used for maintaining normal operation of the refrigeration house and the air conditioner in summer short-time ship stopping and stopping are achieved. The LNG/diesel engine dual-fuel main engine cylinder sleeve cooling water loop and the high-temperature flue gas cooling loop are effectively integrated, according to different space-time working conditions, the system can improve the cold comprehensive utilization rate and reduce the operation cost on the basis of meeting the requirements of ships through adjustment of corresponding functional modules.
一种双燃料动力船LNG冷能梯级综合利用系统及方法
2022-04-15
Patent
Elektronische Ressource
Chinesisch
IPC: | F01K STEAM ENGINE PLANTS , Dampfkraftanlagen / B63J Hilfsanlagen auf Schiffen , AUXILIARIES ON VESSELS / F02G HOT-GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS , mit Heißgas oder Verbrennungsgasen betriebene Kraftmaschinenanlagen, wobei die Kraftmaschinen mit Verdrängerwirkung arbeiten / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF |