Performance comparison of double-effect parallel-flow and series flow water–lithium bromide absorption systems

A state-of-the-art review of solar air-conditioning systems

“…Many authors including Anand and Kumar [7], Gommed and Grossman [8], Herold et al [9], Arun et al [10], Marcos [11], Marcos et al [5] have all reported on series and parallel flow of doubleeffect chillers. These flow patterns (series and parallel flow) being the manner in which the internal fluid goes through the generators and the desorbers.…”

“…They reported that in solar thermally driven cooling systems, the heat from a solar collector can be used to produce mechanical power to compress the refrigerant vapor in a conventional VCC or as a heat source for the generator of a sorption cooling cycle. Different authors reported that single effect absorption chillers using LiBr-Water as the working pair are the most commercially developed (Baniyounes et al [21], Henning [6]), Gommed and Grossman [8], Herold et al [9], Arun et al [10], Marcos et al [5]). …”

Theoretical analysis of LiBr/H2O absorption refrigeration systems

“…The exergetic efficiency is defined using Equation (9). For an absorption refrigeration system, the exergy rate of the product ( _ EP) is the heat abstracted at the evaporator given by Equation (44) and the exergy rate of the fuel ( _ EF), specified using Equation (45), is the heat supplied by the heat source in the generator plus the pump work:…”

“…A number of researchers [1][2][3][4][5][6][7][8][9][10] have presented the energy analysis of single-effect, double-effect series flow and parallel flow absorption refrigeration systems using LiBr/H 2 O. In most of these studies, the authors have investigated the effect of several design and operational variables, viz.…”

On-site real-time evaluation of an air-conditioning direct-fired double-effect absorption chiller

“…The COP of single-effect absorption chillers working with LiBr-water can reach a real value of approximately 0.7, whereas double-effect chillers values vary from 0.9 to 1.25. Several researchers have worked on double-effect absorption machines, such as: Ziegler et al [3][4][5] who based his studies on the COP of the basic absorption cycle, Arun [6] in double-effect parallel-flow and series-flow chillers and Xu [7,8] in series-flow-type and parallel-flow-type chillers. However, there is a lack of experimental research on double-effect reverse parallelflow chillers, which are the purpose of this work.…”