Question

Please show steps

2.54 Using the ASHRAE Psychrometric Chart complete the

following table:

Dry Bulb, °F	Wet Bulb, °F	Dew Point, °F	Humidity Ratio, lbv/lba	Relative Humidity, %	Enthalpy, Btu/lbair	Specific Volume, ft3/lbair
80						13.8
70	55
100		70
				40	40
			0.01			13.8
	60	40
40				20
		60			30
85			0.012
80	80

Answer 1

here answer shown in table and graph from which answer was find away its also attached below.

Dry Bulb	Wet Bulb	Dewpoint	Humidity Ratio	RH%	Enthalpy	Spe. Volm
80	63.9	54.2	0.009	41%	29.4	13.8
70	55	43	0.0058	37%	23.2	13.48
100	78.1	70	0.0158	38%	41.7	14.48
97	76.8	68.9	0.0152	40%	40	14.38
79	65	57	0.01	47%	30	13.8
86	60	40	0.0052	20%	26.4	13.86
40	30	Not shown in chart	0.001	20%	11	12.62
74.6	65	60	0.0111	60%	30	13.71
85	69.6	62	0.012	46%	33.8	14.
80	80	80	0.0222	100%	43.6	14.09

In graph every point with its serial number shown below.

1,2,3,....10 given condition point.

1',2',3',.....9' its a respective dew point temperature of given condition.

for point 7 dew point temperature not shown in a graph.

and for point 10 dew point temperature is the same as the wet bulb and dry bulb temperature.