Performance Investigation of O-Ring Vacuum Membrane Distillation Module for Water Desalination

Table 2

Pure water VMD experimental results for PVDF and PTFE at a 92 kPa vacuum degree.

Run	(°C)	(m/s)	(kg/m^2 h)		(W/m^2 K)	× 10^−2	Re	Nu	Pr
			PVDF	PTFE
1	65	0.32	17.7	19.4	1553.8	3.97	86711.31	288.2	2.77
2	65	0.67	35.7	37.7	2821.6	7.23	183557.7	523.2	2.77
3	65	1.11	53.1	58.9	4225.0	10.83	304052.6	783.5	2.77
4	65	1.25	55.2	63.8	4670.0	11.97	344593.0	866.0	2.77