Rancang Bangun Fasilitas Eksperimen Perpindahan Kalor Kondensasi pada Permukaan Luar Pipa Horizontal untuk Berbagai Kondisi Permukaan dan Fluida Kerja
CLEMENT ARIEF PARSAORAN NUGRAHA SIHOMBING, Ir. Indro Pranoto, S.T., M.Eng., Ph.D., IPM., ASEAN Eng.
2024 | Skripsi | TEKNIK MESIN
The issue of energy and its impact on the environment, especially regarding greenhouse gases, has become a global concern this century. It is known that electricity generation is one of the largest greenhouse gas producing sectors, and its consumption continues to grow. Air conditioning systems are the second largest factor in the growth of world electricity demand. Increasing the performance efficiency of air conditioning systems is believed to help reduce global greenhouse gas emissions. The condenser is one of the components used in both air conditioning systems and in several power plant systems, so increasing condenser efficiency is the right strategy to address this issue. One popularly studied method of increasing condenser efficiency is using enhanced surfaces to improve condensation performance.
In this research, a design was carried out for an experimental facility for condensation heat transfer on the outer surface of a horizontal pipe for various surface conditions and working fluids. The research process includes calculation, selection, and design processes for each components used. The working fluid is one of the main variables in this research, and it was determined that the working fluid used in the experimental facility was R134a, as the working fluid, and water, as the coolant. Additionally, the condensation medium chosen, as another main variable, is the outer surface of a pipe, so that the condensation phenomenon can be well-observed.
The research resulted in an experimental facility with the main component of a condensation chamber which has a condensation capacity of 600 W with dimensions of (300) × (300) × (300) mm. Additionally, a heat exchanger and a steam generator are used, with a capacity of 900 W and 1 kW respectively. The water bath circulator has a cooling capacity of 675 W and a flow rate capacity of up to 20 LPM, and the compressor has a flow rate capacity of up to 19 LPM. Experimental facilities can be used to determine the performance of condensation heat transfer on horizontal pipe based on variations in the working fluids, fluid flow rates, and pipe surface conditions as independent variables, as well as to visualize the condensation phenomena that occur.
Kata Kunci : kondensasi, koefisien perpindahan kalor, enhanced surface, condensation chamber, R134a