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

Aman, Julia; Henshaw, Paul; Ting, David S.‐K.

doi:10.1016/j.tsep.2017.10.022

Cited by 10 publications

(4 citation statements)

References 14 publications

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“…Thermal bubble technology [ 10 , 11 , 12 ] has been used in many research experiments and industries [ 13 ] since it was firstly applied in the inkjet [ 14 , 15 , 16 ]. Specially, the thermal-bubble-based microvalves and micropump have played quite important roles in different fields, such as aerospace [ 17 ], biomedicine [ 18 , 19 ], and chemistry [ 20 , 21 ]. Currently, resistance heating [ 10 , 22 ] is the most conventional and simplest method in bubble generation.…”

Section: Introductionmentioning

confidence: 99%

A Self-Regulated Microfluidic Device with Thermal Bubble Micropumps

Guo

Liu

et al. 2022

Micromachines

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Currently, many microchips must rely on an external force (such as syringe pump, electro-hydrodynamic pump, and peristaltic pump, etc.) to control the solution in the microchannels, which probably adds manual operating errors, affects the accuracy of fluid manipulation, and enlarges the noise of signal. In addition, the reasonable integration of micropump and microchip remain the stumbling block for the commercialization of microfluidic technique. To solve those two problems, we designed and fabricated a thermal bubble micropump based on MEMS (micro-electro-mechanical systems) technique. Many parameters (voltage, pulse time, cycle delay time, etc.) affecting the performance of this micropump were explored in this work. The experimental results showed the flow rate of solution with the assistance of a micropump reached more than 15 μL/min in the optimal condition. Finally, a method about measuring total aflatoxin in Chinese herbs was successfully developed based on the integrated platform contained competitive immunoassay and our micropump-based microfluidics. Additionally, the limit of detection in quantifying total aflatoxin (AF) was 0.0615 pg/mL in this platform. The data indicate this combined technique of biochemical assays and micropump based microchip have huge potential in automatically, rapidly, and sensitively measuring other low concentration of biochemical samples with small volume.

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Section: Introductionmentioning

confidence: 99%

A Self-Regulated Microfluidic Device with Thermal Bubble Micropumps

Guo

Liu

et al. 2022

Micromachines

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“…Papers that studied bubble pumps that used in Einstein refrigeration system or other vapour absorption refrigeration systems are relatively common compared to the investigation of Einstein refrigeration system alone. Researchers from University of Windsor, Canada modelled and analysed the performance of bubble pump for a vapour absorption refrigeration system [17][18][19]. Lin et al, [20] from Institute of Refrigeration Technology, China, studied the bubble pump with the configuration of multiple tubes.…”

Section: Introductionmentioning

confidence: 99%

Empirical Modelling of Einstein Absorption Refrigeration System

Chan

Lim

2020

ARFMTS

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A single pressure absorption refrigeration system was invented by Albert Einstein and Leo Szilard nearly ninety-year-old. The system is attractive as it has no mechanical moving parts and can be driven by heat alone. However, the related literature and work done on this refrigeration system is scarce. Previous researchers analysed the refrigeration system theoretically, both the system pressure and component temperatures were fixed merely by assumption of ideal condition. These values somehow have never been verified by experimental result. In this paper, empirical models were proposed and developed to estimate the system pressure, the generator temperature and the partial pressure of butane in the evaporator. These values are important to predict the system operation and the evaporator temperature. The empirical models were verified by experimental results of five experimental settings where the power input to generator and bubble pump were varied. The error for the estimation of the system pressure, generator temperature and partial pressure of butane in evaporator are ranged 0.89-6.76%, 0.23-2.68% and 0.28-2.30%, respectively. In addition, all the estimated generator temperatures and partial pressures of butane are within the error bar range that derived from the standard deviation of the experimental results.

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“…Also, the authors reported that the LiCl-H 2 O mixture presented a better performance than the LiBr-H 2 O mixture. Aman et al [21] theoretically analyzed the performance of a bubble-pump-driven LiCl-H 2 O and LiBr-H 2 O absorption air conditioning systems. The authors reported that, under the same operating conditions, the system operating with the LiCl-H 2 O achieved higher coefficients of performance and cooling capacities than those obtained with the LiBr-H 2 O pair.…”

Section: Introductionmentioning

confidence: 99%

Integration of the Experimental Results of a Parabolic Trough Collector (PTC) Solar Plant to an Absorption Air-Conditioning System

et al. 2018

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The present study reports the experimental results of a parabolic trough collector field and an absorption cooling system with a nominal capacity of 5 kW, which operates with the ammonia-lithium nitrate mixture. The parabolic trough collectors’ field consists of 15 collectors that are made of aluminum plate in the reflector surface and cooper in the absorber tube, with a total area of 38.4 m2. The absorption cooling system consists of 5 plate heat exchangers working as the main components. Parametric analyses were carried out to evaluate the performance of both systems under different operating conditions, in independent way. The results showed that the solar collectors’ field can provide up to 6.5 kW of useful heat to the absorption cooling system at temperatures up to 105 °C with thermal efficiencies up to 19.8% and exergy efficiencies up to 14.93, while the cooling system operated at generation temperatures from 85–95 °C and condensation temperatures between 20 and 28 °C, achieving external coefficients of performance up to 0.56, cooling temperatures as low as 6 °C, and exergy efficiencies up to 0.13. The highest value for the solar coefficient of performance reached 0.07.

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

Cited by 10 publications

References 14 publications

A Self-Regulated Microfluidic Device with Thermal Bubble Micropumps

A Self-Regulated Microfluidic Device with Thermal Bubble Micropumps

Empirical Modelling of Einstein Absorption Refrigeration System

Integration of the Experimental Results of a Parabolic Trough Collector (PTC) Solar Plant to an Absorption Air-Conditioning System

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