Use of an absorption bromistolithium refrigerating machine in an air conditioning system at a synthetic resin production facility using waste steam

The article examines the effectiveness of the absorption bromistolithium refrigerating machine in an air conditioning system at a synthetic resin production facility using waste steam. The research demonstrates an energy assessment of the system, which proves the high efficiency of an absorption bromistolithium refrigerating machine by using secondary energy resources.

The paper examines the principal technological scheme, which includes a central air conditioner with a water air cooler and a steam air heater. The authors use methods of thermal and exergy analysis, as well as standard calculation methods for a single-stage absorption cycle for the energy assessment. It is established that chilled water, produced in the evaporator, maintains the required supply air temperature. The heat is removed from the condenser and the absorber by means of a cooling tower, which ensures a closed cycle of cooling water use. There are three main operating modes of the system: summer (cooling), winter (direct steam heating) and hybrid (dehumidification with subsequent heating). The obtained results confirm the high energy and environmental efficiency of using secondary energy resources for air conditioning needs in chemical enterprises.

1. Baikov I. R., Burdygina E. V., Dunyushkin G. K. Selection of the optimal heating coolant for arm depending on the technical conditions of the oil and gas enterprise. Petroleum Engineering. 2023;21(1):147–152. https://doi.org/10.17122/ngdelo-2023-1-147-152. EDN: NNRKPJ. (In Russ.).

2. Stepanov K. I., Mukhin D. G., Volkova O. V., Baranenko A. V. Analysis of COP thermodynamic cycle LBAC with two-level absorption when obtaining negative temperatures of cooling. Journal of International Academy of Refrigeration. 2016;1:86–92. https://doi.org/10.21047/1606-4313-2016-16-1-86-92. EDN: VVRJZV. (In Russ.).

3. Stepanov K. I., Mukhin D. G., Alekseenko S. V., Volkova O. V. Experimental study of negative temperatures in lithium-bromide absorption refrigerating machines. Thermophysics and Aeromechanics. 2015;22(4):501–510. EDN: UCECJR. (In Russ.).

4. Sedoykin I. E., Galimova L. V. Modeling and analysis of an energy saving system based on an absorption lithium bromide refrigerating machine for air separation plants. Refrigeration Technology. 2015;7:22–26. EDN: UAXWHR. (In Russ.).

5. Timoshenko D. V., Ivachenko E. V. Use of absorption chiller for utilization of thermal resources of marine engine. Uchenyye Zametki TOGU. 2019;10(4):334–340. EDN: INTGYP. (In Russ.).

6. Laptev V. Yu., Yakimov V. G. Lithium bromide absorption chiller. Alleya Nauki. 2017;1(14):3–20. EDN: ZTBRKR. (In Russ.).

7. Antropov P. G., Soina E. R. Efficiency of application of a gas turbine unit with an absorption lithium bromide refrigerating machine. Nauchnyy Al’manakh. 2021;5-2:21–24. EDN: SKXVSS. (In Russ.).

8. Lazarenko O. O., Galimova L. V. Analysis and management of energoefficiency of absorption lithium bromide refrigerating unitson the basis of exergetic approach and simulation modeling. Caspian Journal: Management And High Technologies. 2014;1(25):070–081. EDN: SEQKZB. (In Russ.).

9. Zaitsev I. A. Comprehensive assessment of energy efficiency of a refrigeration system based on a single-stage absorption lithium bromide refrigeration machine and solar energy. Construction Economics. 2025;2:292–295. EDN: DHLRCR. (In Russ.).

10. Zaitsev I. A. Energy-efficient air conditioning systems based on lithium bromide absorption refrigeration machines in buildings of various purposes. Innovation & Investment. 2025;4:342–344. EDN: EOJDQW. (In Russ.).

11. Stepanova K. I., Mukhina D. G. Efficiency of a Lithium Bromide Absorption Thermotransformer with Two-Stage Absorption in the Structure of Gasified Power Plants. Thermal Engineering. 2021;1:43–51. https://doi.org/10.1134/S0040363620120097. EDN: XOQWPS. (In Russ.).

12. Galimova L. V., Bayramov D. Z., Bayramov Sh. Z. The method of a primary design of a scientifically grounded scheme for optimization an energy saving system on the basis of the steamgas power plant and an absorption lithium bromide refrigerating machine. Refrigeration Technology. 2020;1:28–33. EDN: LFGWRT. (In Russ.).

13. Galimova L. V., Bairamov D. Z. Thermodynamic analysis of combined cycle plant operation as part of an energy-saving system based on an absorption bromide-lithium refrigerating machine. Omsk Scientific Bulletin. Series Aviation-Rocket and Power Engineering. 2020;4(4):57–65. https://doi.org/10.25206/2588-0373-2020-4-4-57-65. EDN: NRZBJA. (In Russ.).

14. Galimova L. V., Sedoykin I. E. Results of analysis of thermodynamic efficiency of air separation systems using absorption bromide-lithium refrigerating machines. Refrigeration Technology. 2018;5:26–29. EDN: YAEUYP. (In Russ.).

15. Malinina O. S., Baranenko A. V., Lyadova E. E. Efficiency of the thermodynamic cycle of absorption lithium bromide refrigerating unit with two-stage absorption and three-stage generation of the refrigerant vapor with bound mass flow. Journal of International Academy of Refrigeration. 2020;4:12–19. https://doi.org/10.17586/1606-4313-2020-19-4-12-19. EDN: CTAAYX. (In Russ.).