A novel lithium bromide absorption chiller with enhanced absorption pressure

Xie, Guoqi; Wu, Qingping; Xiaoming, FA; Zhang, Lirong; Bansal, Pradeep

doi:10.1016/j.applthermaleng.2011.12.047

Cited by 23 publications

(7 citation statements)

References 9 publications

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“…Other design modifications include half, single, multiple and variable effect cycles, combined compression-absorption cycles, combined ejector-absorption cycles, etc. [8][9][10]. Sozen et al [11] demonstrated that solar energy could be used to drive an ejector-absorption system over eight to nine months per year in Turkey.…”

Section: Introductionmentioning

confidence: 98%

“…Most published studies on absorption refrigeration assessed the efficiency solely based on the coefficient of performance (COP) [3,4,[8][9][10]12,14]. Kaushik and Arora [15] analysed a waterLiBr absorption cooling machine and observed that the COP increased with the desorber temperature and decreased when the absorber temperature increased.…”

Section: Introductionmentioning

confidence: 98%

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Advanced exergy analysis of an absorption cooling machine: Effects of the difference between the condensation and absorption temperatures

Gong

Boulama

2015

International Journal of Refrigeration

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

Advanced exergy analysis of an absorption cooling machine: Effects of the difference between the condensation and absorption temperatures

Gong

Boulama

2015

International Journal of Refrigeration

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“…It is only possible if high temperature drives the desorption process. Other techniques as controlling the absorbed mass by monitoring the fluid level at the evaporator or boosting the absorber pressure have also been studied by different authors (Zogg and Westphalen, 2006), (Xie et al, 2012). These approaches and an overview of control strategies can be found at Labus PhD dissertation, (J.…”

Section: Introductionmentioning

confidence: 99%

Control Strategy Approach Based on the Operational Results of a Small Capacity Direct Air-Cooled Libr-Water Absorption Chiller

Baulenas¹,

González²,

Papakokkinos³

et al. 2017

Proceedings of SWC2017/SHC2017

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The scope of this paper is to give a short overview of the state of the art regarding control strategies, identify the role of different operating conditions, and provide useful suggestions for the design and operation of a solar assisted absorption cooling system, in line to the European regulation as well as its directly related directives. The operation of a solar absorption cooling system under real conditions is subjected to various limitations regarding its ability to satisfy the required cooling demand, as well as to avoid certain internal conditions which would lead to problematic situations and jeopardize the smooth operation of the system-such as solution crystallization and water freezing. Thus, it is very important to define and refine new control operating strategies, from an internal and external perspective. Several control strategies are discussed, altogether with a new fuzzy logic approach, which shall be experimentally validated as future actions, due to its highly promising capability.

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“…Xie et al. 16 presented an experimental investigation on a reformed H 2 O–LiBr absorption chiller with enhancing absorption pressure to explore the way of increasing the refrigeration capacity and the coefficient of performance (COP), saving manufacturing materials and diminishing the volume of the system. Jelinek et al.…”

Section: Introductionmentioning

confidence: 99%

Performance improvement of ammonia/absorbent air source absorption heat pump in cold regions

Wang

Shi

et al. 2013

Building Services Engineering Research and Technology

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Air source absorption heat pump is promising in energy saving and emission reduction of heating and domestic hot water, but performs badly or even cannot work in cold climate. The ammonia/absorbent air source absorption heat pump with low-pressure boosting is proposed to solve the problem. The hybrid air source absorption heat pump + compressor system is modeled and the compression ratio is optimized to obtain maximum primary energy efficiency. The integrated system is simulated with air temperature ranging from −30℃ to 10℃ and hot water temperature from 30℃ to 60℃. Comparative simulations on three working fluids reveal that NH3–LiNO3 system has the lowest compression ratio and the highest primary energy efficiency value. By pressure boosting, the air source absorption heat pump can operate under air temperatures as low as −30℃. Primary energy efficiency of the hybrid system is about 15–50% higher than that of coal boiler, showing great potential for heat supply in cold regions. Practical application: Heating and domestic hot water consumes a large amount of energy every year. Air source absorption heat pump can be a potential alternative to the traditional boiler systems in the point view of primary energy efficiency. However, air source absorption heat pump performs badly or cannot work when the air temperature is low. This paper presents a hybrid air source absorption heat pump with pressure boosting to improve the performance of the air source absorption heat pump heating system, making it operate under lower outdoor air temperatures with higher primary energy efficiency. The novel heat supply system is expected to make contributions to building energy saving as well as pollution reduction.

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A novel lithium bromide absorption chiller with enhanced absorption pressure

Cited by 23 publications

References 9 publications

Advanced exergy analysis of an absorption cooling machine: Effects of the difference between the condensation and absorption temperatures

Advanced exergy analysis of an absorption cooling machine: Effects of the difference between the condensation and absorption temperatures

Control Strategy Approach Based on the Operational Results of a Small Capacity Direct Air-Cooled Libr-Water Absorption Chiller

Performance improvement of ammonia/absorbent air source absorption heat pump in cold regions

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