Thermodynamic design data for absorption heat pump systems operating on water-lithium chloride—Part one. Cooling

Grover, G.S.; Eisa, M.A.R.; Holland, F.A.

doi:10.1016/0890-4332(88)90039-7

Cited by 23 publications

(4 citation statements)

References 2 publications

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“…The COP values were extracted from the scholarly literature [31]. For the single-effect configuration, the value of 0.65 [32] was adopted; for the double-effect, 1.36 [33]; and for the triple-effect, 1.80 [34]. Table 2 summarizes the COP values as well as the generator operating temperature ( ) adopted by each system configuration.…”

Section: Absorption Refrigeration Systemmentioning

confidence: 99%

Techno feasibility analysis of a concentrating solar thermal cooling systems at a university complex

Malagueta

Alves

Pinto‐da‐Rocha

2021

DYNA

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Concentrating solar thermal (CST) energy applications are growing worldwide, especially in combined cooling, heat, and power processes. Building upon the analysis of a building’s thermal comfort, and software simulations for CST, the current study evaluates a solar conditioning system integrated with absorption systems. The cooling system is equipped with single-, double- and triple-effect configurations cycle, production parameters, and thermal storage. The required fraction of auxiliary energy for the system operation is estimated. The results indicate that the double effect system is the best configuration for the adopted location in Brazil. The system’s annual auxiliary energy demand is, approximately, 20%. Triple-effect systems require less energy at higher temperatures due to local direct radiation, which then leads to an intermittent operation and greater auxiliary energy demands. The methodology applied in this work could be adopted in different locations, with an emphasis on the possibility of testing smaller scale systems in small buildings.

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Section: Absorption Refrigeration Systemmentioning

confidence: 99%

Techno feasibility analysis of a concentrating solar thermal cooling systems at a university complex

Malagueta

Alves

Pinto‐da‐Rocha

2021

DYNA

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“…They suggested that the lower circulation ratio (ratio of the mass flow rate of salt solution and refrigerant) in LiCl-H 2 O systems is the cause of higher performance [15]. Grover et al [16] analyzed the thermodynamic properties of LiCl-H 2 O for VARSs and found that this solution can operate at lower generator temperature. A thermophysical properties analysis of different working fluids for VARSs was performed by Flores et al [17] and it was found that LiCl-H 2 O has a higher COP over a LiBr-H 2 O VARS at lower heat input because of their low C p (heat capacity) values.…”

Section: Introductionmentioning

confidence: 99%

Bubble-pump-driven LiBr-H2O and LiCl-H2O absorption air-conditioning systems

Aman

Henshaw

Ting

2018

Thermal Science and Engineering Progress

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A thermally-driven bubble pump, powered by solar or waste heat energy, is a simple and efficient technique for lifting a liquid from lower to higher levels, after which it can flow by gravity. In this study, solar thermal driven pumps were incorporated in the solar collector as well as in the refrigerant cycle to provide a design of an airconditioning system for a residential home that is independent of grid electricity. The crystallization challenge, low pressure, and low efficiency are the main downsides of bubble-pump-driven LiBr-H 2 O refrigeration systems, in comparison with other bubble-pump-driven diffusion absorption refrigeration systems. Therefore, a complete thermodynamic analysis of each component is necessary to improve the system performance. In this research, a thermodynamic model was developed, introducing a new absorbent-refrigerant pair (LiCl-H 2 O) and comparing it with LiBr-H 2 O, in a bubble pump operated absorption chiller driven by solar thermal energy. Under the same operating condition, the highest cooling effect and the performance of the LiCl-H 2 O system are 49 W and COP=0.56 compared to 34 W and COP=0.46 for a LiBr-H 2 O system.

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“…Meanwhile, the thermophysical properties of LiCl-H2O shows promise for small residential-scale applications. Many researchers have shown that LiCl-H2O has advantages over a LiBr-H2O system in terms of cycle performance as well as low energy consumption [3,[4][5][6][7][8]. Hence, it is important to perform a detailed thermodynamic analysis of a LiCl-H2O vapor absorption refrigeration system (VARS) in order to improve the cycle performance.…”

Section: Introductionmentioning

confidence: 99%

Advanced Exergy Analysis Of Licl-H2O Absorption Air Conditioning System

Aman¹,

Henshaw²,

Ting³

2018

Progress in Canadian Mechanical Engineering

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Increasing energy demand for air conditioning due to climate change is posing a continuous threat to the environment. Absorption airconditioning systems driven by solar thermal or waste heat energy are an alternative for providing cooling comfort in a sustainable manner. The crystallization problem of high performance LiBr-H2O absorption cooling system hinders its small-scale applications. In this study, the potential of a 10 kW LiCl-H2O absorption refrigeration system is discussed and analyzed. The new concept of advanced exergy analysis is coupled with conventional thermodynamic analyses, which provides the available potential of each component for overall system performance improvement. The analyses uncovered that only 45% of the total exergy loss is due to each component's own internal irreversibilities, whereas the remaining is through the interaction of the irreversibilities of other components in the system. The analyses also reveal that 43% of the total exergy loss is unavoidable and 57% can be reduced by improving the overall system efficiency.

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Thermodynamic design data for absorption heat pump systems operating on water-lithium chloride—Part one. Cooling

Cited by 23 publications

References 2 publications

Techno feasibility analysis of a concentrating solar thermal cooling systems at a university complex

Techno feasibility analysis of a concentrating solar thermal cooling systems at a university complex

Bubble-pump-driven LiBr-H2O and LiCl-H2O absorption air-conditioning systems

Advanced Exergy Analysis Of Licl-H2O Absorption Air Conditioning System

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