Low-grade waste heat driven two-stage absorption refrigeration system and refrigeration method

• Main Authors: HAO CHANGSHENG, XU YING, DING NING, YOU ZHANPING, MA CHANGJIE, REN XIAOFEN, SHE XIAOHUI, WANG ZHENXING
• Format: Patent
• Language: Chinese; English
• Published: 07.11.2023
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; WEAPONS

The invention relates to a low-grade waste heat driven two-stage absorption refrigeration system and method. The low-grade waste heat driven two-stage absorption refrigeration system comprises a low-pressure-stage solution circulation loop, a high-pressure-stage solution circulation loop and a refrigerant circulation loop. After saturated liquid output by a condenser in the refrigerant circulation loop is mixed with condensed saturated liquid output by the high-pressure-stage solution circulation loop, the mixed liquid is subjected to first-stage throttling pressure reduction through a first throttling valve to reach intermediate pressure, and the mixed liquid enters a gas-liquid separator to be separated; the separated saturated steam is absorbed by a high-pressure-stage solution circulation loop; and after the separated saturated liquid is mixed with condensed saturated liquid output by the low-pressure-stage solution circulation loop, the mixed liquid is subjected to second-stage throttling pressure reduct