Simulation and optimization of a LiBr solar absorption cooling system with evacuated tube collectors

Assilzadeh, F.; Kalogirou, Soteris A.; Ali, Yusoff; Sopian, Kamaruzzaman

doi:10.1016/j.renene.2004.09.017

Cited by 236 publications

(90 citation statements)

References 3 publications

(3 reference statements)

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“…For that reason, research and development activities are necessary in order to reduce the cost of using solar assisted air conditioning in buildings [4][5]. There are a lot of researches referred to theoretical studies [6][7][8][9], but the information of experimental studies in this kind of installations is scarce [10]. Away other reasons about this, is the difficulty for designing solar cooling systems.…”

Section: Introductionmentioning

confidence: 99%

Monitoring and simulation of an existing solar powered absorption cooling system in Zaragoza (Spain)

Monné

Alonso

Palacin

et al. 2011

Applied Thermal Engineering

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Section: Introductionmentioning

confidence: 99%

Monitoring and simulation of an existing solar powered absorption cooling system in Zaragoza (Spain)

Monné

Alonso

Palacin

et al. 2011

Applied Thermal Engineering

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“…It was observed from Figure 5 that a storage tank volume of 0.5 m 3 provided the maximum solar fraction. From the above graphs, we can conclude that the optimum storage tank volume is 0.5m 3 .…”

Section: Useful Solar Energy Solar Fractionmentioning

confidence: 78%

“…A number of experimental and simulation studies [3]- [9] have been carried out in the field of solar absorption cooling systems to promote this technology. Assilzadeh et al [3] worked on the simulation and optimization of a LiBr solar absorption cooling system with evacuated tube collectors for Malaysia weather condition using TRNSYS software.…”

Section: Introductionmentioning

confidence: 99%

“…Assilzadeh et al [3] worked on the simulation and optimization of a LiBr solar absorption cooling system with evacuated tube collectors for Malaysia weather condition using TRNSYS software. The authors suggested that a 0.8 m 3 hot water storage tank essential to achieve continuous operation and the optimum design for a 3.5 kW (1 refrigeration ton) system consisted of 35 m 2 evacuated tubes solar collector titled at 20˚.…”

Section: Introductionmentioning

confidence: 99%

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Modelling, Transient Simulation and Economic Analysis of Solar Thermal Based Air Conditioning System in Gujarat

Utham¹,

Agravat²,

Jani³

et al. 2016

SGRE

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Commercial building sector accounts for 8% of the total electricity consumption in India. Cooling activities (HVAC) in commercial buildings consume 55% of the total energy utilized. Consequently, CO 2 emissions from conventional buildings in India were estimated to be 98 metric tonnes of CO 2 per million ft 2 in 2014. Solar thermal air conditioning can be the solution to these demands and can contribute to about 15% to 20% of India's total oil consumption thereby reducing the dependence on fossil fuels. Hence, the main objective of the work is to model and simulate a solar absorption cooling system for GERMI office building located in Gandhinagar, Gujarat, India, using the transient simulation software 'TRNSYS'. Cooling load estimation and comfort conditions required for the building were determined based on ASHRAE standards. Evacuated tube collectors were selected because of its market availability, ease of manufacturing and proven technology. Single effect absorption chiller was used because of its commercial availability. The effects of storage tank volume, collector area and collector slope were also investigated for parametric optimization. The results of the simulation and parametric analysis are analyzed and presented in the paper.

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“…Montoya-Marquez et al [14] measured the inlet and outlet temperature according to the installation angle of the solar collector and predicted the efficiency through simulation. Assilzadeh et al [15] performed an efficiency and temperature simulation of a LiBr solar absorption cooling system using a vacuum tube type solar collector and the TRNSYS program. Afonso et al [16] established an energy equation and performed an air movement and temperature simulation of the solar chimney.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Optimum Solar Collector Installation Angle from the Viewpoint of Energy Use Patterns

et al. 2017

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While solar energy is the most efficient energy source for heating, many problems can occur when the capacity selection of the system is wrong: a definite possibility in a place where the seasonal climate change is large, such as Korea. For example, if a system is designed for use in the winter, the system will be overloaded if it does not discard the energy it collects during the summer months. Conversely, if the capacity of the system is in accordance with the summer season demand, it will be necessary to input supplementary energy in the winter season. Solar energy also depends on the altitude and azimuth of the sun, and the amount of energy collected on the slope depends on the latitude of the area in which it is installed. Therefore, this study is divided into investigating the collection energy, heat radiation energy and auxiliary energy input according to the installation angle of the solar collector and the capacity of the heat storage tank according to latitude of the installation area. To this end, we formulate appropriate energy equations. Simulation coding was performed to track the temperature changes in each part. Additionally, we considered the amount of solar energy that can be effectively used, not simply the amount of solar energy collected, by substituting the actual hot water usage schedule.

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Simulation and optimization of a LiBr solar absorption cooling system with evacuated tube collectors

Cited by 236 publications

References 3 publications

Monitoring and simulation of an existing solar powered absorption cooling system in Zaragoza (Spain)

Monitoring and simulation of an existing solar powered absorption cooling system in Zaragoza (Spain)

Modelling, Transient Simulation and Economic Analysis of Solar Thermal Based Air Conditioning System in Gujarat

Analysis of the Optimum Solar Collector Installation Angle from the Viewpoint of Energy Use Patterns

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