Analisa dan Uji Eksperimental Performansi Kondensor Kendaraan untuk Penumpang

Abstract

Kenyamanan dan kesejukan dalam berkendara khususnya pada mobil sangat diperlukan. Berbagai cara dan upaya yang dilakukan manusia sehingga kenyamanan berkendara dicapai. Salah satu cara yang lebih efektif untuk mendapatkan kenyamanan didalam mobil yaitu dengan memasang pengkondisian udara (air conditioning). Pemformansi system air conditioning sangat dipengaruhi oleh kerja kompresor. Sehingga tekanan kerja kompresor (suction) sangat berperan pada pemformansi system air conditioning yang berdampak bagi kerja kompresor, daya kompresor, dampak refrigasi, efficiency isentropis dan coefficient of performance (COP) dari system AC mobil khususnya pada AC mobil Toyota Kijang LGX 1800 cc. Berdasarkan hasil analisis dapat disimpulkan, bahwa perbandingan koefisien perpindahan panas menyeluruh terjadi pada laju aliran udara 2,871687 m3/s – 4,700423 m3/s, dimana sisi udara Uc = 1055,89 W/m2K – 1162,11 W/m2K yang terbesar. Begitu juga sisi freon Uc = 143,44 W/m2K - 533,53 W/m2K yang terbesar. Dimana pada kondisi ini memiliki koefisien perpindahan panas menyeluruh cukup besar dan perbandingan efektivitas yang menyesuaikan dengan kondisi suhu juga laju aliran. Dalam kondisi ini, secara experimental temperatur suhu keluar outlet kondensor lebih tinggi ±12 oC, sedangkan temperatur suhu keluar menggunakan freon lebih rendah ± 17 oC

Comfort and coolness in driving, especially in cars, is very necessary. Various ways and efforts made by humans so that driving comfort is achieved. One of the more effective ways to get comfortable in the car is to install air conditioning. The performance of the air conditioning system is strongly influenced by the compressor work. So that the working pressure of the compressor (suction) plays a very important role in the formation of the air conditioning system which has an impact on compressor work, compressor power, refrigeration impact, isentropic efficiency and coefficient of performance (COP) of the car air conditioning system, especially on the Toyota Kijang LGX 1800 cc car air conditioner. Based on the results of the analysis, it can be concluded that the overall heat transfer coefficient ratio occurs at an air flow rate of 2.871687 m3/s – 4.700423 m3/s, where the air side Uc = 1055.89 W/m2K – 1162.11 W/m2K which biggest. Likewise, the freon side Uc = 143.44 W/m2K - 533.53 W/m2K is the largest. Where in this condition has a fairly large overall heat transfer coefficient and an effectiveness ratio that adjusts to temperature conditions as well as flow rate. In this condition, experimentally, the condenser outlet outlet temperature is ±12 oC higher, while the freon outlet temperature is ±17 oC lower.