Optimization of a lithium bromide–water solar absorption cooling system with evacuated tube collectors using the genetic algorithm

Iranmanesh, Aghil; Mehrabian, M. A.

doi:10.1016/j.enbuild.2014.09.047

Cited by 23 publications

(6 citation statements)

References 20 publications

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“…-Iranmanesh and Mehrabian [42]: optimization of a lithium bromide-water solar absorption cooling system with evacuated-tube collectors (by means of the genetic algorithm) was conducted.…”

Section: General Studies About Vacuum-tube Solar Thermal Collectorsmentioning

confidence: 99%

“…The evacuated-tube collector was fabricated from acrylic for improved resistance to shattering Comparing to a glass-tube collector at a much higher vacuum level, the heat loss of the non-glass collector with natural convection in the continuum-flow regime is around 15% higher Qiu et al [41]: evacuated-tube collectors (emphasis on China) Evacuated-tube collectors: a notable «driver» for solar-water-heating industry in China Iranmanesh and Mehrabian [42]: optimization of a lithium bromide-water solar absorption cooling system with evacuated-tube collectors…”

Section: Heat-pipe Configurations Are Better Than Water-in-glass Designsmentioning

confidence: 99%

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Building-integrated solar thermal systems based on vacuum-tube technology: Critical factors focusing on life-cycle environmental profile

Lamnatou

Cristofari

Chemisana

et al. 2016

Renewable and Sustainable Energy Reviews

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The present study refers to Building-Integrated Solar Thermal (BIST) systems based on vacuum-tube collectors and it consists of two parts. In the first part, a literature review is presented, including studies about vacuum-tube technology (vacuumtube/BIST systems, the environmental profile of vacuum-tube collectors, etc.). Critical issues, for example related to the integration of vacuum-tube collectors into the building, are highlighted. The review shows that most of the proposed vacuumtube/BIST concepts are about façade-integration and there are few studies about the environmental profile of vacuum-tube collectors. As a continuity of the issues presented in the first part, the second part includes a case study about the environmental comparison of a vacuum-tube/BIST system with a flat-plate/BIST configuration, based on life-cycle analysis. The systems are gutter-integrated, patented and they have been developed/tested at the University of Corsica, in France. Multiple life-cycle impact assessment methodologies, environmental indicators, scenarios and databases are adopted. The results reveal that the energy-payback time is 1.8 and 0.5 years, for the flat-plate/BIST and the vacuum-tube/BIST, respectively, while by using recycling these values become 0.5 and 0.1 years, respectively. Energy-return-on-the-investment, greenhouse-gas payback time and avoided impact during use phase (by adoptingUSEtox, ecological footprint and France´s electricity as well as with reference domestic-gas-boiler CO 2.eq emissions) are also presented. The findings of the present work: 1) are compared with the literature and good agreement is observed, 2) verify that considerably higher impact can be avoided by utilizing the vacuum-tube/BIST instead of the flat-plate/BIST system.

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“…-Iranmanesh and Mehrabian [42]: optimization of a lithium bromide-water solar absorption cooling system with evacuated-tube collectors (by means of the genetic algorithm) was conducted.…”

Section: General Studies About Vacuum-tube Solar Thermal Collectorsmentioning

confidence: 99%

Section: Heat-pipe Configurations Are Better Than Water-in-glass Designsmentioning

confidence: 99%

Building-integrated solar thermal systems based on vacuum-tube technology: Critical factors focusing on life-cycle environmental profile

Lamnatou

Cristofari

Chemisana

et al. 2016

Renewable and Sustainable Energy Reviews

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“…Due to ETC design are capable of collecting solar energy from different angles, its become most efficient solar thermal collector and commonly used for cooking, commercial building, water heating, solar cooling technologies and electric power generation [22]. [20] The application of ETC in air conditioning system were studied and proven that efficiency of ETC become maximum when intensity of solar radiation is maximum [23]. However, lack of research on solar air conditioning using evacuated tube collector compared using flat plate system due to ETC substantially more expensive (at 511,29 -1278,23 Euro /m² collector surface) than flat plate collectors (153,34 to 613,55 Euro /m²) [20].…”

Section: Evacuated Tube Collector (Etc)mentioning

confidence: 99%

“…In fact, previous studies shown that optimization assessment of lithium bromide-water solution been developed and tested by Iranmanesh and Mehrabian [23]. Effectiveness and economical view were carried out by Bukoski et al [32] for different kind of absorption chillers and performance compatibility studied was carried out previously by Lecuona et al [33] …”

Section: Absorption Chillermentioning

confidence: 99%

A review on the recent development of solar absorption and vapour compression based hybrid air conditioning with low temperature storage

Noor

Azim

Azran

et al. 2016

MATEC Web of Conferences

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Abstract. Conventional air conditioners or vapour compression systems are main contributors to energy consumption in modern buildings. There are common environmental issues emanating from vapour compression system such as greenhouse gas emission and heat wastage. These problems can be reduced by adaptation of solar energy components to vapour compression system. However, intermittence input of daily solar radiation was the main issue of solar energy system. This paper presents the recent studies on hybrid air conditioning system. In addition, the basic vapour compression system and components involved in the solar air conditioning system are discussed. Introduction of low temperature storage can be an interactive solution and improved economically which portray different modes of operating strategies. Yet, very few studies have examined on optimal operating strategies of the hybrid system. Finally, the findings of this review will help suggest optimization of solar absorption and vapour compression based hybrid air conditioning system for future work while considering both economic and environmental factors.

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“…Similarly, the aforementioned optimal value maximizes the thermal efficiency of collectors as well [15]. Additionally, Iranmanesh [20] performed a global optimization for flow rates of the collector and generator by the genetic algorithm. Subsequently, Tzivanidis [21] pointed out that the appropriate ratio of the generator flow rate to the collector one is 1.…”

Section: Introductionmentioning

confidence: 99%

Performance of Solar Absorption-Subcooled Compression Hybrid Cooling System for Different Flow Rates of Hot Water

Zhang

Jing

et al. 2020

Applied Sciences

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The solar absorption-subcooled compression hybrid cooling system (SASCHCS) is tech-economically feasible for high-rise buildings. Since such a system operates with no auxiliary heat source, the performance coupling of its absorption subsystem and solar collectors is sensitive to the variation of hot water flow rate. In this regard, the relationship of system performance and hot water flow rate is required to be clarified exactly. Therefore, this paper aims to illustrate the effect mechanism of hot water flow rate and to propose the corresponding decision criterion. The case study is based on a typical high-rise office building in subtropical Guangzhou. The daily working process of this system with different hot water flow rates is simulated and analyzed. Subsequently, the useful heat of collectors and cooling capacity of the absorption subsystem with the hot water flow rate is discussed in detail. The results show that the SASCHCS operates with hot water temperatures ranging from 60 °C to 90 °C. The energy saving increases with the rise of hot water flow rate, but such variation tends to be flat for the excessively high flow rate. As the collector flow rate increases from 1 m3/h to 10 m3/h, the daily energy saving improves by 21% in August. Similarly, the daily energy saving increases by 37.5% as generator hot water flow rate increases from 1 m3/h to 10 m3/h. In addition, the collector flow rate of 3.6 m3/h (13.33 (kg/m2 h)) and the generator flow rate of 5.2 m3/h (19.26 (kg/m2 h)) are optimal for the annual operation, with considering power consumption of water pumps. This paper is helpful for the improvement of SASCHCS operating performance.

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Optimization of a lithium bromide–water solar absorption cooling system with evacuated tube collectors using the genetic algorithm

Cited by 23 publications

References 20 publications

Building-integrated solar thermal systems based on vacuum-tube technology: Critical factors focusing on life-cycle environmental profile

Building-integrated solar thermal systems based on vacuum-tube technology: Critical factors focusing on life-cycle environmental profile

A review on the recent development of solar absorption and vapour compression based hybrid air conditioning with low temperature storage

Performance of Solar Absorption-Subcooled Compression Hybrid Cooling System for Different Flow Rates of Hot Water

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