Budihardjo Sarwo Sastrosudiro and Arnas Lubis and Muhammad Idrus Alhamid and Nasruddin Jusuf
Control Strategy of Solar Thermal Cooling System under the Indonesia Climate
450 - 456
2016
10
4
International Journal of Energy and Power Engineering
https://publications.waset.org/pdf/10004240
https://publications.waset.org/vol/112
World Academy of Science, Engineering and Technology
Solar thermal cooling system was installed on Mechanical Research Center (MRC) Building that is located in Universitas Indonesia, Depok, Indonesia. It is the first cooling system in Indonesia that utilizes solar energy as energy input combined with natural gas; therefore, the control system must be appropriated with the climates. In order to stabilize the cooling capacity and also to maximize the use of solar energy, the system applies some controllers. Constant flow rate and onoff controller are applied for the hot water, chilled water and cooling water pumps. The hot water circulated by pump when the solar radiation is over than 400Wm2, and the chilled water is continually circulated by pump and its temperature is kept constant 7 °C by absorption chiller. The cooling water is also continually circulated until the outlet temperature of cooling tower below than 27 oC. Furthermore, the threeway valve is used to control the hot water for generate vapor on absorption chiller. The system performance using that control system is shown in this study results.
Open Science Index 112, 2016