e20.xlsx

	A	B	C	D	E	G	H	I	J	K	L
1	COOLING AND DEHUMIDIFYING LOAD ANALYSIS
2	COOLING AND DEHUMIDIFYING LOAD ANALYSIS
3	Project Name		OFFICE BUILDING		Location	NEW DELHI		Latitude :	28.4	Altitude :	216
4	Address		NEW DELHI		Psychrometric data:	DB	WB	%RH	DP	Gr/Lb	Daily Range (ᵒF)
5	Address		NEW DELHI		Outside	107.2	74.5	21.4	59.5	76.2	25
6	Space Used For		COM. LAB		Room	75	62.5	50	55.125	64.9
7	Area of Room		180	Sq.ft	Difference	32.2	12		4.375	11.3
8	Volume of Space		1800	Cu.ft
9	ROOM SENSIBLE HEAT
10	Solar Gain Glass :				Heat (BTU/Hr)		Ventilation air requirement				CFM
11	ITEM	Area (ft2)	Solar Gain	SHGC	Heat (BTU/Hr)		People		CFM/Person
12	Glass	25	165	0.21	866.25		10		10		100.00
13	Glass	70	18	0.21	264.60		ACH method :	Volume (ft3)	ACH
14	Glass				0.00		ACH method :				0.00
15	Glass				0.00		Area (ft2)		CFM/ft2
16	Glass				0.00		180		0.12		21.60
17	Sky light				0.00		total ventilation air selected				121.6
18	Solar & Trans. Gain Walls & Roof :
19	ITEM	Area (ft2)	eq.∆T(ᵒF)	U Factor
20	Wall	143	43	0.36	2213.64		Infiltration based on door usage
21	Wall	140	23	0.36	1159.20		Door type		People	Usage	CFM
22	Wall				0.00		Revolving				0.00
23	Wall				0.00		Open Door
24	Wall				0.00		Infiltration based on door & Window Crack
25	Roof Sun	180	52	0.47	4399.20		Crack Length (ft)		CFM/Ft		CFM
26	Roof Shaded				0.00						0.00
27	Trans Gain Except Walls & Roof :						ACH method :	Volume (ft3)	ACH		CFM
28	ITEM	Area (ft2)	∆T(ᵒF)	U Factor			ACH method :	1800	0.5		15.00
29	Glass	95	32.2	0.31	948.29		total infiltration air selected				15
30	Partition	30	27.2	0.4	326.40
31	Door				0.00
32	Ceiling				0.00		Effective Sensible Heat Factor				ESHF
33	Floor	180	27.2	0.45	2203.20		ERSH :	25098.64	ERLH :	1846.63	0.93
34	Infiltration & Outside Air :						Grand Sensible Heat Factor				GSHF
35	Infiltration(CFM)	∆T(ᵒF)	Constant				GSH :	28904.53	ERLH :	2687.57	0.91
36	15	32.2	1.08		521.64		Apparatus dew point
37			Bypass Factor	Constant			Selected ADP in ᵒF from table				54.15
38	121.6	32.2	0.1	1.08	422.88
39	Internal Heat :						Ventilation type			direct ventilation
40	People number	Sensible heat gain (Btu/hr/person)
41	10	245			2450.00		Entering Coil Temperature (ᵒF), ton-coil
42	Power (Watts)	Conversion	usage factor
43	3500	3.41	0.5		5967.50		Mixed Air Temperature (ᵒF), tmix		(tR.A x CFMR.A)+(tF.A x CFMF.A)
44	lights (Watts)	Conversion	Usage factor	ballast factor			Mixed Air Temperature (ᵒF), tmix		CFMS.A
45	252	3.41	1	1.25	1074.15		Return air temperature (ᵒF)		tR.A		85
46	Room Sensible Heat =				22816.95		Return air CFM		CFMR.A		627.9
47	Safety factor in percentage =			10			Fresh air temperature (ᵒF)		tF.A		107.2
48	Effective Room Sensible Heat =				25098.64		Fresh air CFM		CFMF.A		121.6
49	ROOM LATENT HEAT						Supply air CFM		CFMS.A		749.5
50	Infiltration(CFM)	humidity difference, ∆W(gr/lb)		Constant			Mixed Air Temperature (ᵒF), tmix				88.60176117
51	15	11.3		0.68	115.26		∆Tcoil (ᵒF) =	(1-Bypass factor)(tmix - ADP)			31.00658506
52	Outside Air CFM	∆W(gr/lb)	constant	bypass factor
53	121.6	11.3	0.68	0.1	93.44		Supply Air Flow (CFM) CFMS.A		sensible heat
54	People	Latent heat gain (Btu/hr/person)					Supply Air Flow (CFM) CFMS.A		1.08 x ∆Tcoil
55	10	155			1550.00		sensible heat				25098.64
56	Room Latent Heat Sub Total =				1758.70		Supply air flow (CFM), CFMS.A				749.50
57	Safety factor in percentage =			5			safety factor in percentage =				10
58	Effective Room Latent Heat =				1846.63		Total supply air flow in CFM				824.45
59	Effective Room Total Heat =				26945.27
60	Outside Air Heat
61	Sensible heat
62	Outside Air Flow (CFM)	Temp Diff:	constant	1 - Bypass factor						Tr	2.63
63	121.6	32.2	1.08	0.9	3805.88544
64	Latent heat									CFM	824.45
65	Outside Air Flow (CFM)	humidity Diff:	constant	1 - Bypass factor
66	121.6	11.3	0.68	0.9	840.93696					ESHF	0.93
67	Return Duct Gain & Pump Losses in percentage=
68	Grand Total Heat =				31592.10					GSHF	0.91
69	Grand Total Heat =				31592.10
70	Tonnage =				2.63					ADP	54.15
71	Tonnage =				2.63
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