The Effect of Atmospheric Temperature on Brine Cooling Performance Using Nylon Tube on Liquid Line and Suction Line.
Ir. Arda Rahardja Lukitobudi, M.Eng., Ir. Sugiyarto, MT., A.P. Edi Sukamto, ST., MT., Triaji Pangripto Pramudantoro, ST., M.Eng., Cindy Gamas, Verino Apriliano Prio Utomo

Department of Refrigeration and Air Conditioning Engineering, Politeknik Negeri Bandung

Abstract

Nowadays nylon tubes was used on liquid and suction lines especially on moveable Standing Floor and Split Unit Air Conditioner and also another Refrigeration Units. But using nylon tube on liquid and suction line will increase the power consumption. Cindy Gamas analysed that the COPactual, COPcarnot and Efficiency were reduced and the power consumption was increased by using nylon tubes beside of copper tubes on liquid and suction line. The chilling time was also the same using those tubes.
In this paper, a further experimental study was carried out to know the effect of atmospheric temperature on the performance of Brine Cooling Unit using nylon tubes on liquid and suction lines. As nylon tubes influence the subcool and superheat of the refrigerant and by using indirect cooling secondary refrigerant on Brine Cooling Unit will increase COP and reduce the energy, it was interesting to know the effect of using nylon tubes on liquid and suction lines of the unit. The atmospheric temperatures were carried out on 220C- 24,50C and 270C. The result was that the discharge pressure was increased and the temperature was also increased when the atmospheric temperature was increased. On the other hand, the suction pressure was increased and the temperature was also increased when the atmospheric temperature was increased. The evaporator inlet temperature was increased when the atmospheric temperature was increased. The brine chilling time was increased when the atmospheric temperature was increased. The electrical current was increased when the atmospheric temperature was increased. The COP was decreased when the atmospheric temperature was increased.

Keywords: Liquid and Suction Line, Nylon Tubes, Brine Cooling Unit

Topic: Mechanical Engineering