Statistical Study on the Effect of Yarn Fineness on Heat and Mass Transfer Properties of Single Jersey Knitted Fabrics

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ANOVA table for a) polyester and b) cotton samples for water vapour permeability

(a)
Source	Mean Square	F-ratio	Probability (F-ratio)
Yarn Fineness	644.878	198.340	< 0.001
Error	3.251
(b)
Source	Mean Square	F-ratio	Probability (F-ratio)
Yarn Fineness	412.260	59.050	< 0,001
Error	6.982

Range test for a) polyester and b) cotton fabrics for thermal conductivity

(a)		(b)
Yarn Count	Mean value	Yarn Count	Mean value
Ne 20/1	29.12 a	Ne 20/1	32.48 a
Ne 30/1	28.28 a	Ne 40/1	29.40 b
Ne 40/1	24.16 c	Ne 30/1	28.16 b

Range test for a) polyester and b) cotton fabrics for OMMC

(a)		(b)
Yarn Count	Mean value	Yarn Count	Mean value
Ne 30/1	0.56 a	Ne 30/1	0.69 a
Ne 40/1	0.54 a	Ne 40/1	0.53 a
Ne 20/1	0.50 a	Ne 20/1	0.31 b

ANOVA table for a) polyester and b) cotton samples for thermal conductivity

(a)
Source	Mean Square	F-ratio	Probability (F-ratio)
Yarn Fineness	42.28	49.67	< 0.001
Error	0.85
(b)
Source	Mean Square	F-ratio	Probability (F-ratio)
Yarn Fineness	29.69	39.27	< 0,001
Error	0.76

ANOVA table for a) polyester b) cotton samples for OMMC

(a)
Source	Mean Square	F-ratio	Probability (F-ratio)
Yarn Fineness	0.005	0.6382	0.5420
Error	0.008
(b)
Source	Mean Square	F-ratio	Probability (F-ratio)
Yarn Fineness	0.212	12.670	0.0006
Error	0.017

Sample plan

Sample Code	Fiber Content	Yarn Count	Fabric weight (g/m2)	Fabric thickness (mm)	Fabric density a (g/m3)
PET1	100 % PET	Ne 20/1	186,00	0,54	0,34
CO1	100 % cotton	Ne 20/1	181,80	0,65	0,28
PET2	100 % PET	Ne 30/1	146,80	0,47	0,31
CO2	100 % cotton	Ne 30/1	141,00	0,51	0,28
PET3	100 % PET	Ne 40/1	102,00	0,39	0,26
CO3	100 % cotton	Ne 40/1	113,60	0,48	0,24

Range test for a) polyester and b) cotton fabrics for water vapour permeability

(a)		(b)
Yarn Count	Mean value	Yarn Count	Mean value
Ne 40/1	73,91 a	Ne 40/1	67,13 a
Ne 20/1	57,61 b	Ne 30/1	66,49 a
Ne 30/1	54,66 c	Ne 20/1	52,47 b

Range test for a) polyester and b) cotton fabrics for air permeability

(a)		(b)
Yarn Count	Mean value	Yarn Count	Mean value
Ne 40/1	2042 a	Ne 40/1	941.2 a
Ne 30/1	1374 b	Ne 30/1	383.0 b
Ne 20/1	1106 c	Ne 20/1	356.2 b

ANOVA table for a) polyester and b) cotton samples for air permeability

(a)
Source	Mean Square	F-ratio	Probability (F-ratio)
Yarn Fineness	1394144	455.40	< 0.001
Error	3061
(b)
Source	Mean Square	F-ratio	Probability (F-ratio)
Yarn Fineness	654530	959.01	< 0,001
Error	683