Experimental measurements of the surface coating and water retention effects on frosting performance of microchannel heat exchangers for heat pump systems

Experimental investigation of the performance of microchannel heat exchangers with a new type of fin under wet and frosting conditions

“…Meanwhile, the air pressure drop before the fifth defrost process increased 69% compared with the first cycle. The maximum capacity of each cycle also exhibited a decrease during the test, given that air flow blockage dominated coil performance degradation when the coil operates under frosting conditions [16]. Compared with the first cycle, the maximum capacity of the fifth defrost process decreased by 26% for 1 m-s À1 air superficial velocity.…”

Experimental Study on Frost Height of Round Plate Fin-Tube Heat Exchangers for Mobile Heat Pumps

“…Hong et al [17] studied frost growth of the louvered fins of a micro channel heat exchanger. Moallem et al [18] reported experimental measurements on frosting performance of the micro channel heat exchangers for heat pump system. These researches were mostly concerned with general heat exchangers in refrigeration systems and the HVAC system in simple geometries.…”

The effect of surface modification on initial ice formation on aluminum surfaces

“…The optical method involving image analysis provides an accurate way to measure the parameters of the ice surface independently of its morphology. Such a method has been used by Moallem et al [33] and was also applied in the present work. In the presented data the reported ice thickness is the average of thickness measurements in at least 10 points for each sample using side images acquired with a fast CCD camera.…”