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...

In this paper, a dual stage cascade controller PI-(1+PD) is adopted to maintain and control temperature in greenhouse environment based on smart intelligent gorilla troops optimization (GTO) method for evaluating the gains enhance system response by reducing error value minimize integral time absolute (ITAE) fitness functions during simulation. The simulation results are obtained using MATLAB 2...