Review of thermal cycles exploiting the exergy of liquefied natural gas in the regasification process

摘要: In the present paper, a review is carried out of current state thermodynamic cycles that exploit exergy released during liquefied natural gas (LNG) regasification, with objective improving power plant efficiency. A study available in LNG and divided thermal mechanical exergy. The aspect can only be recovered through direct expansion LNG. As for aspect, plants based on Rankine, Brayton, Kalina cycles, as well combined CO2 capture are evaluated. choice proper cycle better exergetic use linked quality heat source cycle. Rankine most suitable when low grade, while Brayton more appropriate disposing medium or high grade source. When temperature high, combination favourable order to obtain good Also established selection criteria working fluids. Ethane ethylene put forth operate temperatures. case helium nitrogen those recommended.