A computational study on evaluation of solar absorption cooling system in India

Mittal, Vijay K.; Kasana, K. S.; Thakur, Nagesh

doi:10.1179/174602206x117797

Cited by 2 publications

(4 citation statements)

References 3 publications

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“…In the absence of a load, the temperature of the hot tank up to a degree (179.59 ℃). Figure (7) shows the change in the temperature of the glycerin hot tank with a capacity of (0.55 m 3 ) for the day (June 8) with the change in the area of the central solar collector, with and without load, within (24) hours. The area of the concentrated solar collector is increased several times to reach an area of (12.48 m 2 ) as the capacity of the hot tank is fixed to raise its temperature to reach the highest temperature (193.52℃) in the presence of a load.…”

Section: Resultsmentioning

confidence: 99%

“…Adding a thermal storage-tank to the system for solving this problem by prolonging the energy storage during the day, and then continuing to provide the required temperature of thermalenergy collected when the solar intensity weakens. [7] Authors performed research and developed concepts for using solar energy to generate heat energy in conjunction with an absorbance cooling systems to conditioning the region. In study [8], a parabolic-solar collector with a surface area of 7.5 m 2 was tested for a hot tank capacity of 0.23 m3 utilizing therminol 55 fluid and a mass flow rate of 0.1 kg/s via the solar detector.…”

Section: Introductionmentioning

confidence: 99%

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Thermal Analysis of Absorption Air Conditioning Cycle Using Glycerin in Hot and Cold Storage Tanks

Mardan

Ahmed

Daham

et al. 2023

Journal of Petroleum Research and Studies

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Increasing demand for cooling operations in the oil and other sectors, this has led to an increase in electrical energy consumption. The most sustainable solution is to use absorption cooling technology by utilizing solar heat as driving energy instead of electricity. The primary advantage of absorptive cooling is lower electricity costs. In this study, the effect of changing the thermal storage capacities of hot and cold storage tanks and the solar collector area on the performance of the absorption air conditioning cycle was investigated. The optimum operating conditions, the maximum number of processing hours, and the optimum performance coefficient of the absorption conditioning cycle system were selected. The water-lithium bromide solution was used as a fluid in the sorption cycle, and glycerin was used in the hot and cold tank cycle and in the solar collector because it can with stands both high and low temperatures. The simulation process was carried out using (Fortran 90) program with the help of (Port log) program, (Carrier HAP420) program and (Curve Expert) program. The absorption conditioning cycle was simulated during the day to choose the best capacity for hot and cold storage tanks, as well as to choose the solar collector with the best performance factor. Changing the area of the solar collector (from 9.6 m2 to 16.7 m2), and the volume of the hot tank (from 0.55 m3 to 1.4 m3) have been done to provide the maximum temperature that the hot tank can reach with varying expected cooling load per hour, as well as the size of the tank cold (from 0.9 m3 to 1.6 m3) which gets additional cooling capacity, since the effect of these variables was tested separately. According to the research results, the best and most suitable volume for the hot tank is (0.55 m3), and for the cold tank is (1.5 m3), and the best and appropriate area for a solar concentric collector is (11.7 m2), which can provide longer running hours. Finally, the higher the generator's temperature, the higher the system's coefficient of performance (COP). The lowest COP value (0.68) is used to guarantee that the system runs for longer periods of time.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal Analysis of Absorption Air Conditioning Cycle Using Glycerin in Hot and Cold Storage Tanks

Mardan

Ahmed

Daham

et al. 2023

Journal of Petroleum Research and Studies

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“…In particular, it is possible to find (in a relatively crude manner) the solar panel area required for a certain refrigeration effect given the relevant system temperatures. Similar work was performed by V. Mital et al [3] were a similar model was used but which could only employ LiBr-H 2 O as the refrigerant-absorbent pair.…”

Section: Introductionmentioning

confidence: 85%

“…The working fluids which can be modelled are LiBr-H 2 O and H 2 O-NH 3 . The developed mathematical model, being linear, can be easily extended to model double or multi-effect systems.…”

Section: Introductionmentioning

confidence: 99%

Mathematical model of a vapour absorption refrigeration unit

Micallef¹,

Micallef²

2010

Int. j. simul. model.

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By means of carefully devised assumptions, a simple linear model is presented for an absorption refrigeration unit employing either water-lithium bromide or ammonia-water refrigerant-absorbent pairs. Absorption systems are an alternative to vapour compression systems by being thermally activated. Such heat energy may come from the sun or even from hot exhaust gases from a particular engineering process. A thorough investigation of the optimal operating temperatures is necessary to ensure effective operation of the system. By means of this simulation, the system response to varying absorber, generator and condenser temperatures was analyzed.

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A computational study on evaluation of solar absorption cooling system in India

Cited by 2 publications

References 3 publications

Thermal Analysis of Absorption Air Conditioning Cycle Using Glycerin in Hot and Cold Storage Tanks

Thermal Analysis of Absorption Air Conditioning Cycle Using Glycerin in Hot and Cold Storage Tanks

Mathematical model of a vapour absorption refrigeration unit

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