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Abstrak :
Solar thermal cooling system yang diharapkan mampu menggantikan pemakaian cooling system konvensional berupa vapor compresion system karena lebih hemat dalam pemakaian listrik, ramah lingkungan dan juga dapat memanfaatkan energi matahari yang potensinya sangat besar. Namun, perlu dilakukan simulasi dan juga optimasi pada solar thermal cooling system supaya kenerjanya lebih optimal. Untuk itu, pada tugas akhir ini penulis akan berfokus terhadap tahapan simulasi pemakaian solar thermal cooling systempada gedung MRC FTUI beserta optimasi solar collector menggunakan software EnergyPlus dan GenOpt. Posisi dan kemiringan solar collector menjadi objek optimasi untuk meningkatkan penyerapan energi matahari yang berefek terhadap kenaikan temperatur solar hot water dari solar collector yang akan digunakan sebagai sumber energi pada chiller.Efek dari optimasi tersebut adalah memaksimalkan pengunaan hot water sebagai energi untuk chiller. ......Solar thermal cooling system that is expected to replace the use of conventional cooling system in the form of vapor compresion system because it is more efficient in the use of electricity,environmentally friendly and also can utilizing potential solar energy. However, the simulation needs to be done and also optimization of solar thermal cooling system in order to more optimally performance. Therefor, in this paper the authors will focus to the simulation stage on the use of solar thermal simulation cooling system at the MRC building FTUI along with optimization of solar collector using EnergyPlus software and GenOpt. Position and tilt the solar collector to be the object of optimization to increase the absorption of solar energy that affect the temperature rise solar hot water from the solar collector to be used as an energy source in the chiller. The effect of the optimization is to maximize the use of hot water as the energy for the chiller.

Abstrak :
ABSTRAK
Solar Thermal Cooling System with its absorption cycle is expected to replace the conventional air conditioning system with vapor compression cycle because it is more efficient in terms of cost and energy. However, due to the heat of the sun is not always stable, the system needs to be equipped with a backup energy source, one of which is CNG. In the Manufacturing Research Center building, the lack of facilities that support availability of CNG causes large operating costs. Therefore, Optimization efforts with the aim to reduce operating costs are needed. Simulation and optimization performed with EnergyPlus and GenOpt. The conclusion is that the installation of 100 kW electric heater tankless hot water storage tank is able to reduce total operating costs by 34.95% compared to the use of a combination of solar thermal and CNG and 49.92% compared with the full use of CNG.

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ABSTRACT
Solar Thermal Cooling System with its absorption cycle is expected to replace the conventional air conditioning system with vapor compression cycle because it is more efficient in terms of cost and energy. However, due to the heat of the sun is not always stable, the system needs to be equipped with a backup energy source, one of which is CNG. In the Manufacturing Research Center building, the lack of facilities that support availability of CNG causes large operating costs. Therefore, Optimization efforts with the aim to reduce operating costs are needed. Simulation and optimization performed with EnergyPlus and GenOpt. The conclusion is that the installation of 100 kW electric heater tankless hot water storage tank is able to reduce total operating costs by 34.95% compared to the use of a combination of solar thermal and CNG and 49.92% compared with the full use of CNG.