Modelling and simulation of a solar absorption cooling system for India

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

doi:10.17159/2413-3051/2006/v17i3a3290

Cited by 19 publications

(4 citation statements)

References 9 publications

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“…is taken as 11.1 W/K [9]. The heating Load for generator QL is taken as zero at time when the tank temperature is below 88°C.…”

Section: ( ̅ ̅ )mentioning

confidence: 99%

Optimization of Solar-Driven of a small Absorption Air Conditioning System- eng

Dawood¹,

Yousif²

2013

(AREJ)

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This research deals with the optimum design of an absorption cooling system with cooling capacity of 2 ton refrigeratio driven by solar energy and using Lithium Bromide as absorbent and Water as refrigerant. The present system uses water for cooling the absorber, condenser and for heat transfer in the evaporator. A mathematical model is built to simulate a solar collector system and absorption system, in addition to design flat plate solar collector, f-chart method is used to find the optimum required solar collector area to air condition a space in the establishment with eight hour per working day. The coefficient of performance (COP) has been taken as a measurement to find the optimum internal operation conditions, by examining the performance of absorption system with varying temperatures to the generator, absorber, condenser, evaporator and effectiveness of a solution heat exchanger to obtain the optimum values of these operation conditions and also obtain maximum value of the COP. The result show that the collector area has a large effect on the actual useful heat gain and auxiliary heat to the system, and a collector area 26m 2 is enough to operate absorption system more than eight hours by using a water storage tank with a capacity of 1.5 m 3 and depending on weather data of Mosul city. The results also show that the generator temperature had a great effect on the absorption and solar collector systems.

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“…is taken as 11.1 W/K [9]. The heating Load for generator QL is taken as zero at time when the tank temperature is below 88°C.…”

Section: ( ̅ ̅ )mentioning

confidence: 99%

Optimization of Solar-Driven of a small Absorption Air Conditioning System- eng

Dawood¹,

Yousif²

2013

(AREJ)

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“…Evacuated tube solar collector with a tilt angle of 20 o were used to generate the heat required for the system. Mittal et al, [4] presented the modelling and simulation of a 10.5 kW solar assisted LiBr-water absorption system for Bahal, India. The effect of hot water temperature on performance of the system and flow ratio was found.…”

Section: Introductionmentioning

confidence: 99%

Area Optimization of a Flat Plate Collector for Meeting the Air Conditioning Load of an Office Building Using a Solar Vapor Absorption System

Varghese

2022

ARFMTS

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A solar single effect vapor absorption system is designed to meet the cooling demand of an office building having a floor area of 100 m2. The absorption system operating parameters are optimized using Genetic algorithm to maximize the coefficient of performance (COP). The solar insolation at a location is used as the heat source for the absorption refrigeration generator heat input. The monthly total global radiation at the location for a particular year is found. The insolation profile of a representative day of the year is the input source for the sizing of the solar flat plate collector. Also, the ambient temperature variation profile is used to dynamically simulate the system performance. The refrigeration system is integrated with the solar collector and storage tank to meet the varying cooling load. The total generator load required to meet the cooling load profile of the building is found from the vapor absorption system model in Matlab. The solar flat plate collector system is modelled in such a way that the energy output from the solar collector matches the generator load required. The hot water temperature to generator (heat supplied) is kept constant at 85°C. The generator load required to meet the varying cooling load is achieved by controlling the solution pump flow rate in absorption system. The optimal area of the collector required for meeting the total generator load is found as 14.6 m2. The storage volume required in the storage tank is 0.48 m3. In the solar collector, a variable water flow system profile is used to maintain the constant temperature required in the generator.

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“…Some of these studies include those conducted by Koffi et al [18], Jaisankar et al [19], Jaisankar et al [20], Al shamaileh [21], and Kumar and Rosen [22]. Flat solar collectors are used in applications requiring temperatures lower than boiling temperature and are primarily used for heating water and residential buildings [23]. Concentrated solar collectors are used in applications requiring temperatures higher than boiling temperature.…”

Section: Introductionmentioning

confidence: 99%

Investigations of performance improvements on the evacuated tube solar collector with and without the incorporation of preheater through various engineering approaches

Danook

AL-bonsrulah²,

Raja³

et al. 2022

IET Renewable Power Gen

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Solar irradiation is a clean form of energy, and absorption cooling systems powered by solar energy allow for significant energy savings. In the future, the demand for renewable energy may be the most effective way to serve clean energy, especially in Iraq, which has an excellent geographical location. In this research work, the performances of solar collector with and without of preheater have been evaluated. When compared to flat plate collectors at temperatures above 80 • C, glass evacuated tube solar collectors provide the combined effects of a highly selective surface coating and vacuum insulation of the absorber element, resulting in a high heat extraction efficiency. Firstly, the Evacuated Vacuum Tube Solar Collector (EVTSC) was tested through experimentation. Secondly, Computational Fluid Dynamics (CFD) approach has been involved in this EVTSC system and thereby the conductive, convective and radiation based heat transfers are computed. Additionally, all possible with inclusive preheater cases are computationally investigated, thereafter the comprehensive report is prepared though validated computational procedures. Finally, the maximum efficiency is observed to be 53% without using a preheater and 61.8% with the usage of the preheater. The increase in efficiency using the preheater is found to be 16.6%.

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Modelling and simulation of a solar absorption cooling system for India

Cited by 19 publications

References 9 publications

Optimization of Solar-Driven of a small Absorption Air Conditioning System- eng

Optimization of Solar-Driven of a small Absorption Air Conditioning System- eng

Area Optimization of a Flat Plate Collector for Meeting the Air Conditioning Load of an Office Building Using a Solar Vapor Absorption System

Investigations of performance improvements on the evacuated tube solar collector with and without the incorporation of preheater through various engineering approaches

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