“…Various LG heat harvesting technologies have been put forward continually [2][3][4][5]. Among all these feasible proposals, a class of thermally driven refrigerators, mainly including absorption refrigerator [6][7][8], adsorption refrigerator [9][10][11], and ejector refrigerator [12][13][14], are particularly attractive to researchers due to the fact that around 15% of the electricity generated worldwide is consumed by air-conditioning processes [15]. As the promising alternatives of traditional vapor compression refrigerator, thermally driven refrigerators possess the merits of fewer moving parts, low noise, high reliability, low operation cost, long lifetime, adaptability to a wide range of heat source temperatures, and the possibility of using environmentally-friendly refrigerants [16][17][18].…”