Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Viabilitity study of an absorption chiller for the climatization of a shopping center in Teresina, Piauí
Submission Author:
Ana Lívia Formiga Leite , PI
Co-Authors:
Ana Lívia Formiga Leite, Carlos Antonio Cabral Santos, kleber lima cezar
Presenter: Ana Lívia Formiga Leite
doi://10.26678/ABCM.COBEM2017.COB17-2858
Abstract
The objective of this work is to perform an analysis of a single-effect water-lithium bromide absorption chiller with indirect burning of LPG (Liquified Petroleum Gas) for a thermal load of 1758,43 kW of a Shopping in Teresina, Piauí. To carry out the viability of using an absorption chiller, the energy analysis was developed to determine the required heat and mass transfers and the coefficient of performance (COP). Also was developed the exergetic analysis, to define the irreversibilities and the efficiency of Second law of each component. It was observed that the flow of chilled water influences the internal and external heat flows transferred in the heat exchangers. The COP found was 0.7301. The exergetic efficiencies of the components present satisfactory values as well. The mass flow rate of LPG required to provide heat to the hot water was calculated and, also, the cost of this fuel for an absorption chiller of 1758,43 kW. It has been verified that due to the high LPG cost, although the system has a good energetic performance, the use of this fuel for refrigeration systems with a big capacity is not attractive economically.
Keywords
Exergy Analysis, Energy Analysis, Absorption, chiller
