Title: Experimental investigation on cooling cogeneration plant for low temperature waste heat recovery process

Authors: R. Shankar; Tangellapalli Srinivas; Wilfrido Rivera Gomez Franco

Addresses: Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Temixco, Morelos, Mexico ' Department of Mechanical Engineering, Dr. B.R. Ambedkar National Institute of Technology, Jalandhar, Punjab, India ' Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Temixco, Morelos, Mexico

Abstract: The integration of absorption refrigeration cycle (VAR) and Kalina power system at suitable conditions minimises the components and input energy which is also useful for heat recovery process. Three pressure viz condensing pressure, source and sink pressure are maintained NH₃-H₂O mixture is used as operating fluid, in that 25% is ammonia and 75% weight capacity is water. The vapour ammonia produced in the separator runs the turbine after heated up in the superheater and operated between the boiler pressure and condenser pressure. The ammonia liquid is further throttled from condenser pressure to absorber pressure to achieve the cooling effect. The turbine power output of 3.15 kW and 9.0 kW of cooling are obtained experimentally for the supplied temperature of 129°C from the boiler. Maximum energy utilisation factor (EUF) of 0.21 is obtained and it is further increased by rising ammonia concentration at the inlet of boiler and boiler temperature.

Keywords: VAR; aqua-ammonia; cogeneration; heat recovery; combined power and cooling; Kalina cycle.

DOI: 10.1504/IJESD.2022.123923

International Journal of Environment and Sustainable Development, 2022 Vol.21 No.3, pp.270 - 284

Accepted: 17 Aug 2020
Published online: 05 Jul 2022 *

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