HomeMy WebLinkAboutHVAC LOAD ANALYSISNew Horizons
HVAC Load Analysis
for
New Horizons
4500 West Midway Road
Fort Pierce, Florida
6'0
-- I
Eric J. Svoboda, PE
Fort Pierce Engineering, Inc.
315 South 7th Street
Fort Pierce, FL 34950
772-672-4636
Monday, August 20, 2018
ads Calculation,
Ch'vaq - F�11 CommerclafHVAq Lo P
zlfte
ar
so" 9 D�aval6piT�ent, llonc.,��
erce, nq-'
FortPi' ' E no,
e Ho rIz h
"'New" Horlzohs
esd
�6'&-ilii A4q50'
erce
51 g
Building Summa!y Loads
Building peaks in August at 4pm.
�66
;oof6f�''
pt
Net'
"Y(Net'
aun',
0-
L e SS,,
L Ga i 6
Q`
aint,
, GJ
Ain Gain
Roof 10,450
17,242
19.04
0
22,107
22,107
7.93
Wall 4,911
12,965
14.32
0
9,214
9,214
3.30
Glass 501
13,722
15.16
0
30,701
30,701
11.01
Floor Slab 451
9,227
10.19
0
0
0
0.00
Skin Loads
53,157
58.71
0
62,023
62,023
22.25
Lighting 20,899
0
0.00
0
71,310
71,310
25.58
Equipment 10,450
0
0.00
0
35,655
35,655
12.79
Pool Latent 0
0
0.00
0
0
0
0.00
People 83
0
0.00
16,600
20,750
37,350
13.40
Partition 0
0
0.00
0
0
0
0.00
Cool. Pret. 0
0
0.00
0
0
0
0.00
Heat. Pret. 0
0
0.00
0
0
0
0.00
Cool. Vent. 1,050
0
0.00
47,321
23,079
70,400
25.25
Heat. Vent. 1,050
37,388
41.29
0
0
0
0.00
Cool. Infil. 0
0
0.00
0
0
0
0.00
Heat. Infil. 0
0
0.00
0
0
0
0.00
Draw-Thru Fan 0
0
0.00
0
2,056
2,056
0.74
Blow-Thru Fan 0
0
0.00
0
0
0
0.00
Reserve Cap. 0
0
0.00
0
0
0
0.00
Reheat Cap. 0
0
0.00
0
0
0
0.00
Supply Duct 0
0
0.00
0
0
0
0.00
Return Duct 0
0
0.00
0
0
0
0.00
Misc. Supply 0
0
0.00
0
0
0
0.00
Misc. Return 0
0
0.00
0
0
0
0.00
Building Totals
90,545
100.00
63,921
214,873
278,794
100.00
13: Sea
Let
N'
Net
Sd Lo%s'�
Loss Ga'in
ai"' 1�
0 ry
`v-Gaift,'
a m
4
Ventilation 37,388
41.29
47,321
23,079
70,400
25.25
Infiltration 0
0.00
0
0
0
0.00
Pretreated Air 0
0.00
0
0
0
0.00
Room . 11bads" ' 53,157
58.71
16,600
189,738
206,338
74.01
PlenA Loads,,- 0
0.00
0
0
0
0.00
Farurbu:�VMisc Loads 0
0.00
0
2,056
2,056
0.74
Buildiric[ Totals P6,545
100.00
63,921
214,873
278,794
100.00
1Q-h
Total Buildirig,86pply Aii-(I�iieb on a 21 0
TD):
8,588
CFM
Total BuildiAg �ent. ;�V(1'�,23-% of Supply):
1,050
CFM
Total Conditioned Air Space:
10,450
Sq.ft
Supply Air Per Unit Area:
0.8218
CFM/Sq.ft
Area Per Cooling Capacity:
449.8
Sq.ft/Ton
Cooling Capacity Per Area:
0.0022
Tons/Sq.ft
Heating Capacity Per Area:
8.66
Btuh/Sq.ft
Total Heating Required With Outside Air:
90,545
Btuh
Total Cooling Required With Outside Air:
23.23
Tons
%
Va, tj
ZA ... \New Horizons Heat Load.CH8 Monday, August 20, 2018, 02:39 PM
Air Handier #1 - AHU 1 - Summaly
Loads
Rm
Description
Htg. Loss
'Sen.G
No
R�Qorn Peak f irnfe
Pebple
Htg.rFM
Clg.bl
V61urhe
CFM/Sqft
CIFIVI/c,
1
Records
2,710
14,166
51,162
2,600
Direct
Direct
4pm August
13
656
2,360
0
264
264
27,100
0.24
0.87
0
276
271
-- - -
2
------- — -----
Office
156
257
2,443
400
Direct
Direct
3pm August
2
12
112
0
15
15
1,560
0.08
0.72
0
5
13
3
Data
72
119
897
0
Direct
Direct
3pm August
0
6
41
0
7
7
720
0.08
0.57
0
2
5
4
Mechanical
144
863
2,095
0
Direct
Direct
6pm August
0
40
96
0
14
14
1,440
0.28
0.67
0
17
11
Room Peak Totals:
3,082
15,405
56,595
3,000
Total Rooms: 4
15
714
2,600
0
300
300
Unique Rooms: 4
30,820
0.23
0.84
0
300
300
Z:k...\New Horizons Heat Load.CH8 Monday, August 20, 2018, 02:39 PM
Chvec -Full Commercial HVAC Loads Calculation Program I'm �Elite Software 6evelopmenti Inc..
RkPie�iceEnqineennq _N _0qriz9nsj
E6 Et Ei�rnp__' FL 3 4 950
Facie 4 1
Air Handier #1 - AHU I - Total Load Summaty
Air Handler Description: AHU 1 Constant Volume -Proportion
Supply Air Fan: Draw-Thru with program estimated horsepower of 0.25 HP
Fan Input: 0% motor and fan efficiency with 0 in. water across the fan
Sensible Heat Ratio: 0.95 -- This system occurs I time(s) in the building.
Air System Peak Time: 4pm in August
Outdoor Conditions: Clg: 95*
DB, 80' WB, 131.77 grains, Htg: 42*
DB
Indoor Conditions: Clg: 75'
DB, 50% RH, Htg: 760 1313
Summer: Ventilation controls outside
air, -- Winter: Ventilation controls outside air.
Room Space sensible loss:
15,405 Btuh
Infiltration sensible loss:
0 Btuh
0
CFM
Outside Air sensible loss:
10,682 Btuh
300
CFM
Supply Duct sensible loss:
0 Btuh
Return Duct sensible loss:
0 Btuh
Return Plenum sensible loss:
0 Btuh
Total System sensible loss:
26,088 Btuh
Heating Supply Air: 15,405 / (.999 X
1.08 X 20)
714
CFM
Writer Vent Outside Air (42.0% of supply)
=
300
CFM
Room space sensible gain: 56,517
Btuh
Infiltration sensible gain: 0
Btuh
Draw-thru fan sensible gain: 622
Btuh
Supply duct sensible gain: 0
Btuh
Reserve sensible gain: 0
Btuh
Total sensible gain on supply side of coil:
57,140 Btuh
Cooling Supply Air: 57,140 / (.999 X 1.1 X 20)
2,600 CFM
Summer Vent Outside Air (11.5% of supply) =
300 CFM
Return duct sensible gain: 0
Btuh
Return plenum sensible gain: 0
Btuh
Outside air sensible gain: 6,594
Btuh 300 CFM
Blow-thru fan sensible gain: 0
Btuh
Total sensible gain on return side of coil:
6,594 Btuh
Total sensible gain on air handling system:
63,734 Btuh
Room space latent gain: 3,000
Btuh
Infiltration latent gain: 0
Btuh
Outside air latent gain: 13,520
Btuh
Total latent gain on air handling system:
16,520 Btuh
Total system sensible and latent gain:
80,254 Btuh
Total Air Handler Supply Air (based on a 200 TD):
2,600
CFM
Total Air Handler Vent. Air (11.54% of Supply):
300
CFM
Total Conditioned Air Space:
3,082
Sq.ft
Supply Air Per Unit Area:
0.8435
CFM/Sq.ft
Area Per Cooling Capacity:
460.8
Sq.ftrron
Cooling Capacity Per Area:
0.0022
Tons/Sq.ft
Heating Capacity Per Area:
8.46
Btuh/Sq.ft
Total Heating Required With Outside Air:
26,088
Btuh
Total Cooling Required With Outside Air:
6.69
Tons
ZA ... New Horizons Heat Load.CH8 Monday, August 20, 2018, 02:39 PM
'Elite Software Development, Inc
Chvac - Full CommorclallHVAC Loads6waymFlatiori Program
Fort Pierce Ehqlneering
Fort Pierce, FL 34950
Air Handier #2 - AHU 2 - Summa!y
Loads
RM
[Description
'Area
Htg10 . ss
Sen.Gain
Lat. Gain,"L".
Htg-. C19: 0A.
No-'
Roorl'I'lPeak Time
9-CF.M
P1g, CTM
S Exh
eq_& M1
1 6 lf.0 I F Is,
W
I,-` �� , a
Vdluffie`
�
CFM/Sqft
CFM/Scfft
W.Exhll
,
-Act.CRII:�r
5
Office 1
169
2,006
4,144
400
Direct
Direct
9am August
2
93
173
0
16
16
1,690
0.55
1.02
0
35
20
6
Office 2
169
1,328
4,032
400
Direct
Direct
9am August
2
62
168
0
16
16
1,690
0.36
0.99
0
23
19
7
Office 3
169
1,328
4,032
400
Direct
Direct
9am August
2
62
168
0
16
16
1,690
0.36
0.99
0
23
19
8
Office 4
325
2,530
7,638
600
Direct
Direct
gam August
3
117
318
0
30
30
3,250
0.36
0.98
0
45
36
9
Office 5
169
--- - -
1,328
-----
4,032
400
Direct
Direct
9am August
2
62
168
0
16
16
1,690
0.36
0.99
0
23
19
10
Office 6
169
1,328
4,032
400
Direct
Direct
9am August
2
62
168
0
16
16
1,690
0.36
0.99
0
23
19
11
Office7
273
450
3,899
400
Direct
Direct
3pm August
2
21
163
0
25
25
2,730
0.08
0.60
0
8
18
12
Office 8
156
257
2,443
400
Direct
Direct
3pm August
2
12
102
0
14
14
1,560
0.08
0.65
0
5
12
13
Office 9
330
645
4,859
600
Direct
Direct
3pm August
3
25
203
0
30
30
3,300
0.08
0.61
0
10
23
14
Hall
522
1,642
8,554
800
Direct
Direct
1 pm August
4
76
357
0
48
48
5,220
0.15
0.68
0
29
40
Room Peak Totals:
2,451
12,742
47,665
4,800
Total Rooms: 10
24
590
1,987
0
225
225
Unique Rooms: 10
24,510
0.24
0.81
0
225
225
Z:% ... NNew Horizons Heat Load.CHB Monday, August 20, 2018. 02:39 PM
Air Handier #2 - AHU 2 - Total Load Summary
Air Handier Description: AHU 2 Constant Volume - Proportion
Supply Air Fan: Draw-Thru with program estimated horsepower of 0.19 HP
Faninput: 0% motor and fan efficiency with 0 in. water across the fan
Sensible Heat Ratio: 0.90 -- This system occurs I time(s) in the building.
Air System Peak Time: 2pm in August.
Outdoor Conditions: Clg: 95' DB, 80'WB, 131.77 grains, Htg: 42* DB
Indoor Conditions: Clg: 75* DB, 50% RH, Htg: 750 DB
Because of the diversity in room, plenum and ventilation loads, the room sensible peak time in August at 9arn is different
from the total system peak time, hence the air system CFM was computed using a room sensible load of 45,377.
Summer: Ventilation controls outside air, -- Writer: Ventilation controls outside air.
Room Space sensible loss:
12,742
Btuh
Infiltration sensible loss:
0
Btuh
Outside Air sensible loss:
8,012
Btuh
Supply Duct sensible loss:
0
Btuh
Return Duct sensible loss:
0
Btuh
Return Plenum sensible loss:
0
Btuh
Total System sensible loss:
Heating Supply Air: 12,742 / (.999 X 1.08 X 20)
Winter Vent Outside Air (38.1 % of supply) =
Room space sensible gain: 44,303
Btuh
Infiltration sensible gain:
0
Btuh
Draw-thru fan sensible gain:
476
Btuh
Supply duct sensible gain:
0
Btuh
Reserve sensible gain:
0
Btuh
Total sensible gain on supply side of coil:
Cooling Supply Air: 45,852 / (.999 X 1.1 X 21)
Summer Vent Outside Air (11.3% of supply) =
Return duct sensible gain: 0 Btuh
Return plenum sensible gain: 0 Btuh
Outside air sensible gain: 4,946 Btuh
Blow-thru fan sensible gain: 0 Btuh
Total sensible gain on return side of coil:
Total sensible gain on air handling system:
Room space latent gain: 4,800 Btuh
Infiltration latent gain: 0 Btuh
Outside air latent gain: 10,140 Btuh
Total latent gain on air handling system:
Total system sensible and latent gain:
0 CFM
225 CFM
590 CFM
225 CFM
1,987 CFM
225 CFM
225 CFM
Chec-k Figures
Total Air Handier Supply Air (based on a 21 0 TD): 1,987 CFM
Total Air Handier Vent. Air (11.33% of Supply): 225 CFM
Total Conditioned Air Space:
2,451
Sq.ft
Supply Air Per Unit Area:
0.8106
CFM/Sq.ft
Area Per Cooling Capacity:
454.8
Sq.fttTon
Cooling Capacity Per Area:
0.0022
Tons/Sq.ft
Heating Capacity Per Area:
8.47
Btuh/Sq.ft
Total Heating Required With Outside Air:
20,753
Btuh
Total Cooling Required With Outside Air:
5.39
Tons
20,,753 Btuh
44,778 Btuh
4,946 Btuh
49,724 Btuh
14,940 Btuh
64,664 Btuh
Z:\ ... \New Horizons Heat Load.131-18 Monday, August 20, 2018, 02:39 PM
Chvac - Full Corn I marcial HVAC Load!L
- .
__Flallon ProAram
A
Elltd1oftware,DdvelopTept, Inc.
Ne
Fort plerc .6
Fort Pierce,
ngi ne er nq
E 'I'll
FL 34950
4'.
v
� ;'�'
—
Air Handier #3 - AHU 3 - Summary
Loads
Rm
Des�cription
Area
Mg. Loss
Sen.Qain
Lat.Gaini,
No
Room Peak Time
People.,
Htg.&M
019.CFM:.
� 1� eq.
P, "�CFFMJ'p'z�' q�
Volume
QFM/86ft
CFM/SOft
Act.QE
15
Conference Room
648
4,008
15,859
1,600
Direct
Direct
4pm August
8
186
625
0
73
73
6,480
0.29
0.97
0
96
82
16
Closet
90
149
1,121
0
Direct
Direct
3pm August
0
7
44
0
10
10
900
0.08
0.49
0
4
6
17
Computer Lab
357
589
5,945
1,200
Direct
Direct
3pm August
6
27
234
0
40
40
3,570
0.08
0.66
0
14
31
18
Women
112
185
1,645
200
Direct
Direct
3pm August
1
9
65
0
13
13
1,120
0.08
0.58
0
4
9
19
Men
112
185
1,645
200
Direct
Direct
3pm August
1
9
65
0
13
13
1,120
0.08
0.58
0
4
9
20
Janitor
98
162
1,220
0
Direct
Direct
3pm August
0
7
48
0
11
11
980
0.08
0.49
0
4
6
21
Copier
112
185
1,645
200
Direct
Direct
3pm August
1
9
66
0
13
13
1,120
0.08
0.58
0
4
9
22
Reception
196
1,423
4,336
400
Direct
Direct
9am August
2
66
171
0
22
22
1,950
0.34
0.88
0
34
22
23
Waiting
234
3,054
10,930
800
Direct
Direct
8am August
4
142
431
0
26
26
2,340
0.60
1.84
0
73
67
24
Hall
275
464
3,924
400
Direct
Direct
3pm August
2
21
155
0
31
31
2,750
0.08
0.56
0
11
20
Room Peak Totals:
2,233
10,393
48,270
5,000
Total Rooms: 10
25
482
1,903
0
250
250
Unique Rooms: 10
22,330
0.22
0.85
0
250
250
ZA ... \New Horizons Heat Load.CH8 Monday, August 20, 2018, 02:39 PM
Air Handier #3 - AHU 3 - Total Load Summaty
Air Handier Description: AHU 3 Constant Volume - Proportion
Supply Air Fan: Draw-Thru with program estimated horsepower of 0.18 HP
Fan Input: 0% motor and fan efficiency with 0 in. water across the fan
Sensible Heat Ratio: 0.90 — This system occurs 1 time(s) in the building. ---
AJr System Peak Time: 4pm in August
Outdoor Conditions: Cig: 95* DB, 80* WB, 131.77 grains, Htg: 42' DB
Indoor Conditions: Clg: 75* DB, 50% RH, Htg: 75* DB
Summer: Ventilation controls outside air - ----- Winter: Ventilation controls outside air.
Room Space sensible loss: 10,393 Btuh
Infiltration sensible loss: 0 Btuh 0 CFM
Outside Air sensible loss: 8,902 Btuh 250 CFM
Supply Duct sensible loss: 0 Btuh
Return Duct sensible loss: 0 Btuh
Return Plenum sensible loss: 0 Btuh
Total System sensible loss: 19,295 Btuh
Heating Supply Air: 10,393 / (.999 X 1.08 X 20) 482 CFM
Winter Vent Outside Air (51.9% of supply) = 250 CFM
Room space sensible gain: 43,471 Btuh
Infiltration sensible gain: 0 Btuh
Draw-thru fan sensible gain: 456 Btuh
Supply duct sensible gain: 0 Btuh
Reserve sensible gain: 0 Btuh
Total sensible gain on supply side of coil: 43,926 Btuh
Cooling Supply Air: 43,926 / (.999 X 1.1 X 21)
1,903 CFM
Summer Vent Outside Air (13.1 % of supply) =
250 CFM
Return duct sensible gain: 0
Btuh
Return plenum sensible gain: 0
Btuh
Outside air sensible gain: 5,495
Btuh 250 CFM
Blow-thru fan sensible gain: 0
Btuh
Total sensible gain on return side of coil:
5,495
Btuh
Total sensible gain on air handling system:
49,421
Btuh
Room space latent gain: 5,000
Btuh
Infiltration latent gain: 0
Btuh
Outside air latent gain: 11,267
Btuh
Total latent gain on air handling system:
16,267
Btuh
Total system sensible and latent gain:
65,688
Btuh
Total Air Handier Supply Air (based on a 21 * TD):
1,903
CFM
Total Air Handier Vent. Air (13.14% of Supply):
250
CFM
Total Conditioned Air Space:
2,233
Sq.ft
Supply Air Per Unit Area:
0.8523
CFM/Sq.ft
Area Per Cooling Capacity:
407.9
Sq.ftrron
Cooling Capacity Per Area:
0.0025
Tons/Sq.ft
Heating Capacity Per Area:
8.64
Btuh/Sq.ft
Total Heating Required With Outside Air:
19,295
Btu h
Total Cooling Required With Outside AJr:
5.47
Tons
Z:\ ... \New Horizons Heat Load.CH8 Monday, August 20, 2018, 02:39 PM
EmIneerling INew!H
Fort Pierce
IT.rt FL 34950,
I Air Handler #4 - AHU 4 - Summa!y Loads
aj C
ri pti
iknn besc' bg.�Lpss Sen,.Gajm-'�
No Room ,Peak Tlibe IIHtj'.CFM Clg.:CFM,, S E' qC10 I
4�'
eq,.
CFM/'C -�L�")&Ekhi
"Qi FWS'aft
25 Maintenance
851
4pm August
6
8,505
26 Office
143
3pm August
1
1,430
27 RR
49
3pm August
1
490
28 Mechanical
144
6pm August
0
1,440
Room Peak Totals:
1,187
Total Rooms: 4
8
Unique Rooms: 4
11,865
5,429
17,026
1,200
Direct
Direct
252
780
0
90
90
0.30
0.92
0
103
97
236
2,031
200
Direct
Direct
11
93
0
15
15
0.08
0.65
0
4
12
81
860
200
Direct
Direct
4
39
0
5
5
0.08
0.80
0
2
5
863
2,095
0
Direct
Direct
40
96
0
15
15
0.28
0.67
0
16
12
6,609
22,011
1,600
306
1,009
0
125
126
0.26
0.85
0
125
125
Z:\ ... \New Horizons Heat Load.CH8
Monday, August 20, 2018, 02:39 PM
Air Handler Description: AHU 4 Constant Volume - Proportion
Supply Air Fan: Draw-Thru with program estimated horsepower of 0.10 HP
Fan Input: 0% motor and fan efficiency with 0 in. water across the fan
Sensible Heat Ratio: 0.93 --- This system occurs 1 time(s) in the building. ---
Air System Peak Time: 4pm in August.
Outdoor Conditions: Cig: 95* 1313, 80* WB, 131.77 grains, Htg: 42* DB
Indoor Conditions: Cig: 75* DB, 50% RH, Htg: 750 DB
Summer: Ventilation controls outside air - ----- Winter: Ventilation controls outside air.
Room Space sensible loss: 6,609
Btuh
Infiltration sensible loss: 0
Btuh
0
CFM
Outside Air sensible loss: 4,451
Btuh
125
CFM
Supply Duct sensible loss: 0
Btuh
Return Duct sensible loss: 0
Btuh
Return Plenum sensible loss: 0
Btuh
Total System sensible loss:
11,060 Btuh
Heating Supply Air: 6,609 / (.999 X 1.08 X 20)
306
CFM
Writer Vent Outside AJr (40.8% of supply) =
125
CFM
Room space sensible gain: 21,937 Btuh
Infiltration sensible gain: 0 Btuh
Draw-thru fan sensible gain: 242 Btuh
Supply duct sensible gain: 0 Btuh
Reserve sensible gain: 0 Btuh
Total sensible gain on supply side of coil: 22,178 Btuh
Cooling Supply Air: 22,178 / (.999 X 1.1 X 20)
Summer Vent Outside Air (12.4% of supply) =
Return duct sensible gain: 0 Btuh
Return plenum sensible gain: 0 Btuh
Outside air sensible gain: 2,748 Btuh
Blow-thru fan sensible gain: 0 Btuh
Total sensible gain on return side of coil:
Total sensible gain on air handling system:
Room space latent gain: 1,600 Btuh
Infiltration latent gain: 0 Btuh
Outside air latent gain: 5,633 Btuh
Total latent gain on air handling system:
Total system sensible and latent gain:
1,009 CFM
125 CFM
1
125 CFM
Total Air Handler Supply Air (based on a 200 TD):
1,009
CFM
Total Air Handler Vent. Air (12.39% of Supply):
125
CFM
Total Conditioned Air Space:
1,187
Sq.ft
Supply*r Per Unit Area:
0.8504
CFM/Sq.ft
Area Per Cooling Capacity:
442.7
Sq.ftrron
Cooling Capacity Per Area:
0.0023
Tons/Sq.ft
Heating Capacity Per Area:
9.32
Btuh/Sq.ft
Total Heating Required Wth Outside Air:
11,060
Btuh
Total Cooling Required With Outside Air:
2.68
Tons
2,748 Btuh
24,926 Btuh
7,233 Btuh
32,159 Btuh
ZA ... \New Horizons Heat Load.CH8 Monday, August 20, 2018. 02:39 PM
Elite Software Development, Inc.
Chyac - Full Commercial HVAC Loads fation Pr6ararn
Fort Pierce Enqlneen . nq
[Fort Pierce, FL 34950
New Horizons
[!age j I
Air Handier #5 - AHU 5 - Summmy
Loads
Rm Description
-Arda"
H
Sen.Gain:
.,.,.,LatGainj(f�;'1-,- t "Cl,
No Roorn'Pe
-;?eople,,
Htg.CFM
Clg.Cl FM,:.
��'..,-,��&Exh �4R -*CFM
i&ExhI '6q
@11F M
i
V61fime'
CFM crft
M,/-
QF So
W. Exh ir ...
�W.Exhi
rchii
'C' I
29 Purchasing
1,161
6,776
19,780
1,600
Direct
Direct
2pm August
8
314
865
0
116
116
11,610
0.27
0.76
0
127
119
30 Office 1
144
238
2,043
200
Direct
Direct
3pm August
1
11
89
0
14
14
1,440
0.08
0.62
0
4
12
31 Office 2
143
914
2,207
200
Direct
Direct
4pm August
1
42
97
0
14
14
1,430
0.30
0.68
0
17
13
32 RR
49
81
860
200
Direct
Direct
3pm August
1
4
38
0
5
5
490
0.08
0.77
0
2
5
Room Peak Totals:
1,497
8,008
24,890
2,200
Total Rooms: 4
11
371
1,089
0
150
150
Unique Rooms: 4
14,970
0.25
0.73
0
150
150
Z:\ ... \New Horizons Heat Load.CH8 I Monday, August 20, 2018, 02:39 PM
Air Handler Description: AHU 5 Constant Volume - Proportion
Supply Air Fan: Draw-Thru with program estimated horsepower of 0.10 HP
Fan Input: 0% motor and fan efficiency with 0 in. water across the fan
Sensible Heat Ratio: 0.92 — This system occurs 1 time(s) in the building. --
Air System Peak Time: 3pm in August.
Outdoor Conditions: CIg: 950 IDS, 800 WB, 131.03 grains, Htg: 42' DB
Indoor Conditions: Clg: 750 DB, 50% RH, Htg: 75' DB ,
Summer: Ventilation controls outside air - ----- Writer: Ventilation controls outside air.
Room Space sensible loss: 8,008 Btuh
Infiltration sensible loss: 0 Btuh 0 CFM
Outside Air sensible loss: 5,341 Btuh 150 CFM
Supply Duct sensible loss: 0 Btuh
Return Duct sensible loss: 0 Btuh
Return Plenum sensible loss: 0 Btuh
Total System sensible loss:
Heating Supply Air: 8,008 / (.999 X 1.08 X 20) 371 CFM
Winter Vent Outside Air (40.4% of supply) = 150 CFM
13,349 Btuh
Room space sensible gain: 24,875 Btuh
Infiltration sensible gain: 0 Btuh
Draw-thru fan sensible gain: 261 Btuh
Supply duct sensible gain: 0 Btuh
Reserve sensible gain: 0 Btuh
Total sensible gain on supply side of coil: 25,136 Btuh
Cooling Supply Air: 26,136 / (.999 X 1.1 X 21) 1,089 CFM
Summer Vent Outside Air (13.8% of supply) = 150 CFM
Return duct sensible gain: 0 Btuh
Return plenum sensible gain: 0 Btuh
Outside air sensible gain: 3,297 Btuh 150 CFM
Blow-thru fan sensible gain: 0 Btuh
Total sensible gain on return side of coil:
Total sensible gain on air handling system:
3,297 Stun
28,433 Stun
Room space latent gain: 2,200 Btuh
Infiltration latent gain: 0 Btuh
Outside air latent gain: 6,760 Btuh
Total latent gain on air ' handling system:
Total system sensible and latent gain:
8,960 Btuh
37,393 Btuh
ch6ck.'Fig''u"re's .. ....
Total Air Handler Supply Air (based on a 21 TD):
1,089
CFM
Total Air Handler Vent. Air (13.77% of Supply):
150
CFM
Total Conditioned Air Space:
1,497
Sq.ft
Supply Air Per Unit Area:
0.7275
CFM/Sq.ft
Area Per Cooling Capacity:
480.4
Sq.ftrron
Cooling Capacity Per Area:
0.0021
Tons/Sq.ft
Heating Capacity Per Area:
8.92
Btuh/Sq.ft
Total Heating Required With Outside Air:
13,349
Btuh
Total Cooling Required With Outside Air:
3.12
Tons
Z:\ ... New Horizons Heat Load.CH8 Monday, August 20, 2018. 02:39 PM