Work

Energy Performance Evaluation of an Ammonia–Water Absorption Chiller for Varying Operating Conditions

Year: 2025

Type: article

Abstract: A thermodynamic model of an ammonia–water absorption refrigeration cycle with heat integration was developed using Aspen Plus to investigate the impact of selected process variables on the energy efficiency and operational feasibility of the system. The coefficient of performance (COP), evaporator temperature, and refrigeration cycle heat flows were analyzed as a function of the high and low pressures of the system, as well as ammonia concentration in the generator feed, and UA, which is the product of the overall heat transfer coefficient (U) and the heat transfer area (A) of the solution heat exchanger. This article presents parametric studies that reveal the interdependence of these factors and quantifies their effects on system performance. The results indicate the feasibility of driving the cycle using low-temperature heat sources (e.g., solar thermal energy) for a range of cooling temperatures.

Source: Processes

DOI: 10.3390/pr13123790

Authors: A. Márquez-Nolasco, Santiago L. Pérez-García, Alejandro J. García-Cuéllar

Institutions: Universidad Veracruzana, Tecnológico de Monterrey

Language: English

Topic: Refrigeration and Air Conditioning Technologies

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Climate action

Open Access status: gold

Estimated APC paid: $2,896