04-01-2013, 01:57 PM
Experimental comparison of electronic and thermostatic expansion valve performances in an air conditioning plant.
ABSTRACT
This paper reports on the results of a set of measurements that are carried out from March to November 2006 on the operation of eight direct expansion air conditioner having a total capacity of 120 KW installed at a telephone control room. Air conditioner are equipped with both thermostatic and electronic expansion valves, alternatively activated by solenoid valves on a daily basis, in order to compare the two systems in the same environment and at similar load conditions. The annual analysis is carried out by TRNSYS (Transient System Simulation Program). The simulation result shows that, energy saving of EEV is more than TEV. The R 22 and R 417A are used in this test process.