Experimental performance investigation of small solar air-conditioning systems with different kinds of collectors and chillers

Lu, Zhenneng; Wang, R.Z.

doi:10.1016/j.solener.2014.08.044

Cited by 36 publications

(8 citation statements)

References 8 publications

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“…The maintenance factor is assumed to be 1.1% of the capital cost for the auxiliary cooling system • The electricity price is 0.33 USD kWh −1 in the Perth market Table 2. The initial capital cost of the main equipment [22,[33][34][35].…”

Section: Economic Analysismentioning

confidence: 99%

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Dynamic and Economic Investigation of a Solar Thermal-Driven Two-Bed Adsorption Chiller under Perth Climatic Conditions

2020

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Performance assessment of a two-bed silica gel-water adsorption refrigeration system driven by solar thermal energy is carried out under a climatic condition typical of Perth, Australia. A Fourier series is used to simulate solar radiation based on the actual data obtained from Meteonorm software, version 7.0 for Perth, Australia. Two economic methodologies, Payback Period and Life-Cycle Saving are used to evaluate the system economics and optimize the need for solar collector areas. The analysis showed that the order of Fourier series did not have a significant impact on the simulation radiation data and a three-order Fourier series was good enough to approximate the actual solar radiation. For a typical summer day, the average cooling capacity of the chiller at peak hour (13:00) is around 11 kW while the cyclic chiller system coefficient of performance (COP) and solar system COP are around 0.5 and 0.3, respectively. The economic analysis showed that the payback period for the solar adsorption system studied was about 11 years and the optimal solar collector area was around 38 m2 if a compound parabolic collector (CPC) panel was used. The study indicated that the utilization of the solar-driven adsorption cooling is economically and technically viable for weather conditions like those in Perth, Australia.

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Section: Economic Analysismentioning

confidence: 99%

“…Adsorption chiller 2100 US$ × kW −1 Solar collector [33] 260 US$ × m −2 Storage tank [22] 600 US$ × m −3 Cooling tower [34] 68 US$ × kW −1 Auxiliary heater [22] 50 US$ × kW −1 Pumps [34,35] 881 × Wp 0.4 * US$ *Wp: pump Work…”

Section: Components Cost Unitmentioning

confidence: 99%

Dynamic and Economic Investigation of a Solar Thermal-Driven Two-Bed Adsorption Chiller under Perth Climatic Conditions

2020

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“…Related to thermo-economics, Lu and Wang [19] analyzed economically three types of solar cooling systems. The first one was an adsorption system integrated with ETC solar collector the cycle employing water and silica gel as a working solution.…”

Section: Introductionmentioning

confidence: 99%

Thermo-Economic Comparisons of Environmentally Friendly Solar Assisted Absorption Air Conditioning Systems

2021

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Absorption refrigeration cycle is considered a vital option for thermal cooling processes. Designing new systems is needed to meet the increasing communities’ demands of space cooling. This should be given more attention especially with the increasing conventional fossil fuel energy costs and CO2 emission. This work presents the thermo-economic analysis to compare between different solar absorption cooling system configurations. The proposed system combines a solar field, flashing tank and absorption chiller: two types of absorption cycle H2O-LiBr and NH3-H2O have been compared to each other by parabolic trough collectors and evacuated tube collectors under the same operating conditions. A case study of 200 TR total cooling load is also presented. Results reveal that parabolic trough collector combined with H2O-LiBr (PTC/H2O-LiBr) gives lower design aspects and minimum rates of hourly costs (5.2 $/h) followed by ETC/H2O-LiBr configuration (5.6 $/h). H2O-LiBr gives lower thermo-economic product cost (0.14 $/GJ) compared to the NH3-H2O (0.16 $/GJ). The absorption refrigeration cycle coefficient of performance ranged between 0.5 and 0.9.

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“…Lu and R.Z. Wang [12] integrated an evacuated tube solar collector with a silica gel-water adsorption chiller, a high efficiency CPC solar collector with a single-effect LiBr/H 2 O absorption chiller and a PTC solar collector with a double-effect LiBr/H 2 O absorption chiller and analyzed their performances. Their solar COPs were 0.15, 0.24 and 0.5 respectively, proving the latter system the most attractive.…”

Section: Introductionmentioning

confidence: 99%

Energetic and Financial Comparison between a 1-Stage Absorption Chiller Driven by FPC and a 2-Stage Absorption Chiller Driven by PTC

Bellos¹,

Tzivanidis²,

Zervas³

et al. 2016

Proceedings of the World Congress on Momentum, Heat and Mass Transfer

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Solar energy utilization is very important for our society which faces the global warming problem and the increase in fossil fuels price. A common application of solar energy is the solar-cooling with a sorption machine. In this study, two solar cooling absorption systems are investigated for a large building in Athens. More specifically, the first system uses flat plate collectors (FPC) coupled with a 1-stage absorption chiller operating with Li-Br/H 2 O and the second uses parabolic trough collectors (PTC) coupled with a 2-stage absorption chiller operating with Li-Br/H 2 O. The first system operates in low temperature levels with a coefficient of performance (COP) about 0.6, while the other system operates with a double COP but higher temperature is necessary. A financial evaluation is important in order to determine the most attractive system for this study case. The simulation tool is TRNSYS 16, which is a powerful energy tool and simulates easily large and combined systems. The final results show that both systems are sustainable with the system with PTC to be the most suitable. More specifically, the optimum case in the FPC-system leads to 1400m 2 collecting area with a net present cost 709k€, while in the PTC-system, a 1000m 2 collecting area leads to a net present cost 429k€.

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Experimental performance investigation of small solar air-conditioning systems with different kinds of collectors and chillers

Cited by 36 publications

References 8 publications

Dynamic and Economic Investigation of a Solar Thermal-Driven Two-Bed Adsorption Chiller under Perth Climatic Conditions

Dynamic and Economic Investigation of a Solar Thermal-Driven Two-Bed Adsorption Chiller under Perth Climatic Conditions

Thermo-Economic Comparisons of Environmentally Friendly Solar Assisted Absorption Air Conditioning Systems

Energetic and Financial Comparison between a 1-Stage Absorption Chiller Driven by FPC and a 2-Stage Absorption Chiller Driven by PTC

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