HomeMy WebLinkAboutAPPROVED M Heat Load CalculationsBeachfront Mann Realty
HVAC Load Analysis
for
Beachfront Mann Realty
10525 South Ocean Drive
Jensen Beach, Florida
Prepared By:
Eric J. Svoboda, PE
Fort Pierce Engineering, Inc.
315 South 7th Street
Fort Pierce, FL 34950
772-672-4636
Tuesday, January 12, 2021
Chvac - Full Commercial HVAC Loads Calculation Program Elite Software Development, Inc.
Fort Pierce Engineering Beachfront Mann Realty
Fort Pierce, FL 34950 Page 2
General Project Data Input
General Project Information
Project file name:Mann Realty Heat Load.CH8
Project title:Beachfront Mann Realty
Designed by:Eric J. Svoboda, PE
Project date:Monday, July 07, 2008
Weather reference city:WEST PALM BEACH, FLORIDA, USA
Client name:Beachfront Mann Realty
Client address:10525 South Ocean Drive
Client city:Jensen Beach, Florida
Company name:Fort Pierce Engineering, Inc.
Company representative:Eric J. Svoboda, PE
Company address:315 South 7th Street
Company city:Fort Pierce, FL 34950
Company phone:772-672-4636
Company fax:772-672-4637
Barometric pressure:29.905 in.Hg.
Altitude:15 feet
Latitude:27 Degrees
Mean daily temperature range:15 Degrees
Starting & ending time for HVAC load calculations:7am - 10pm
Number of unique rooms in this project:14
Building Default Values
Calculations performed:Both heating and cooling loads
Lighting requirements:2.00 Watts per square foot
Equipment requirements:1.00 Watts per square foot
People sensible load multiplier:250 Btuh per person
People latent load multiplier:200 Btuh per person
Room sensible safety factor:0 %
Room latent safety factor:0 %
Room heating safety factor:0 %
People diversity factor:100 %
Lighting profile number:0
Equipment profile number:0
People profile number:0
Building default ceiling height:10.00 feet
Building default wall height:12.00 feet
Internal Operating Load Profiles (C = 100)
hr hr hr hr hr hr hr hr hr hr hr hr hr hr hr hr hr hr hr hr hr hr hr hr
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
1 C C C C C C C C C C C C C C C C C C C C C C C C
2 C C C C C C C C C C C C C C C C C C C C C C C C
3 C C C C C C C C C C C C C C C C C C C C C C C C
4 C C C C C C C C C C C C C C C C C C C C C C C C
5 C C C C C C C C C C C C C C C C C C C C C C C C
6 C C C C C C C C C C C C C C C C C C C C C C C C
7 C C C C C C C C C C C C C C C C C C C C C C C C
8 C C C C C C C C C C C C C C C C C C C C C C C C
9 C C C C C C C C C C C C C C C C C C C C C C C C
10 C C C C C C C C C C C C C C C C C C C C C C C C
Z:\ ...\Mann Realty Heat Load.CH8 Tuesday, January 12, 2021, 11:05 AM
Chvac - Full Commercial HVAC Loads Calculation Program Elite Software Development, Inc.
Fort Pierce Engineering Beachfront Mann Realty
Fort Pierce, FL 34950 Page 3
General Project Data Input (cont'd)
Building-Level Design Conditions
Design
Month
Outdoor
Dry Bulb
Outdoor
Wet Bulb
Indoor
Rel.Hum
Indoor
Dry Bulb
Grains
Diff
In/Outdoor
Correction
August 95 80 50%75 66.29 6
Winter 41 75
Master Roofs
Roof
No.
ASHRAE
Roof#
Roof
U-Fac
Dark
Color
Susp.
Ceil
1 1 0.033 No No
Roof #1 Description: Wood Roof, R-30
Master Walls
Wall
No.
ASHRAE
Group
Wall
U-Fac
Wall
Color
1 C 0.095 D
Wall #1 Description: Block wall, 8" sand & gravel, hollow core, siding exterior, interior finish, 1" extruded poly, R-5.0
Master Glass
Glass
No.
Summer
U-Factor
Winter
U-Factor
Glass
Shd.Coef.
Interior
Shading
Interior
Shd.Coef
1 0.810 0.830 1.000 1 0.550
Glass #1 Description: Default Glass
Master Shading Devices
Shade
No.
Dist
Horiz
Overh
Projects
Dist
Beyond
Right
W.Edge
Dist
Beyond
Left
W.Edge
Dist
Overh
Above
Wind
Dist
Right
Fin
Proj
Dist
R-Fin
Beyond
W.Edge
Ht
Of
Right
Fin
Dist
Left
Fin
Proj
Dist
L-Fin
Beyond
W.Edge
Ht
Of
Left
Fin
1 5.00 0.00 0.00 1.00 0.00 0.00 0.00 0.00 0.00 0.00
2 4.50 5.00 5.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Z:\ ...\Mann Realty Heat Load.CH8 Tuesday, January 12, 2021, 11:05 AM
Chvac - Full Commercial HVAC Loads Calculation Program Elite Software Development, Inc.
Fort Pierce Engineering Beachfront Mann Realty
Fort Pierce, FL 34950 Page 4
Building Summary Loads
Building peaks in August at 3pm.
Bldg Load
Descriptions
Area
Quan
Sen
Loss
%Tot
Loss
Lat
Gain
Sen
Gain
Net
Gain
%Net
Gain
Roof 2,172 2,437 6.28 0 3,140 3,140 3.42
Wall 1,967 6,353 16.36 0 4,247 4,247 4.63
Glass 397 11,210 28.87 0 17,105 17,105 18.64
Floor Slab 197 4,153 10.69 0 0 0 0.00
Skin Loads 24,153 62.20 0 24,492 24,492 26.69
Lighting 4,344 0 0.00 0 14,822 14,822 16.15
Equipment 2,172 0 0.00 0 7,411 7,411 8.08
Pool Latent 0 0 0.00 0 0 0 0.00
People 40 0 0.00 7,640 9,960 17,600 19.18
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.400 0 0.00 18,024 8,795 26,820 29.23
Heat. Vent.400 14,680 37.80 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 0 619 619 0.67
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 38,833 100.00 25,664 66,099 91,764 100.00
Building
Summary
Sen
Loss
%Tot
Loss
Lat
Gain
Sen
Gain
Net
Gain
%Net
Gain
Ventilation 14,680 37.80 18,024 8,795 26,820 29.23
Infiltration 0 0.00 0 0 0 0.00
Pretreated Air 0 0.00 0 0 0 0.00
Room Loads 24,153 62.20 7,640 56,685 64,325 70.10
Plenum Loads 0 0.00 0 0 0 0.00
Fan/Duct/Misc Loads 0 0.00 0 619 619 0.67
Building Totals 38,833 100.00 25,664 66,099 91,764 100.00
Check Figures
Total Building Supply Air (based on a 21° TD):2,584 CFM
Total Building Vent. Air (15.48% of Supply):400 CFM
Total Conditioned Air Space:2,172 Sq.ft
Supply Air Per Unit Area:1.1898 CFM/Sq.ft
Area Per Cooling Capacity:284.0 Sq.ft/Ton
Cooling Capacity Per Area:0.0035 Tons/Sq.ft
Heating Capacity Per Area:17.88 Btuh/Sq.ft
Total Heating Required With Outside Air:38,833 Btuh
Total Cooling Required With Outside Air:7.65 Tons
Z:\ ...\Mann Realty Heat Load.CH8 Tuesday, January 12, 2021, 11:05 AM
Chvac - Full Commercial HVAC Loads Calculation Program Elite Software Development, Inc.
Fort Pierce Engineering Beachfront Mann Realty
Fort Pierce, FL 34950 Page 5
Air Handler #1 - AHU 1 - Summary Loads
Rm
No
Description
Room Peak Time
Area
People
Volume
Htg.Loss
Htg.CFM
CFM/Sqft
Sen.Gain
Clg.CFM
CFM/Sqft
Lat.Gain
S.Exh
W.Exh
Htg.O.A.
Req.CFM
Act.CFM
Clg.O.A.
Req.CFM
Act.CFM
1 Mechanical Room
9pm August
48
0
480
1,011
47
0.98
1,148
48
1.00
0
0
0
Direct
8
12
Direct
8
6
2 Conference Room
3pm August
192
8
1,920
2,272
105
0.55
5,842
244
1.27
1,240
0
0
Direct
34
26
Direct
34
31
3 Waiting
8am August
108
2
1,296
5,626
261
2.41
10,759
449
4.15
400
0
0
Direct
23
65
Direct
23
57
4 Reception
7am August
126
1
1,260
1,935
90
0.71
4,245
177
1.40
200
0
0
Direct
22
22
Direct
22
22
5 RR 109
2pm August
48
1
480
54
2
0.05
812
34
0.71
200
0
0
Direct
8
1
Direct
8
4
6 RR 110
2pm August
48
1
480
54
2
0.05
812
34
0.71
200
0
0
Direct
8
1
Direct
8
4
7 Hall
2pm August
110
1
1,100
123
6
0.05
1,539
64
0.58
200
0
0
Direct
19
1
Direct
19
8
8 Office 103
3pm August
140
1
1,400
1,332
62
0.44
2,890
121
0.86
200
0
0
Direct
25
15
Direct
25
15
9 Small Conference
7am August
110
2
1,100
1,513
70
0.64
3,723
155
1.41
400
0
0
Direct
19
17
Direct
19
20
10 Office 105
7am August
90
1
900
1,202
56
0.62
2,796
117
1.30
200
0
0
Direct
16
14
Direct
16
15
11 Office 106
1pm August
90
1
900
2,256
105
1.16
3,501
146
1.62
200
0
0
Direct
16
26
Direct
16
18
Room Peak Totals:
Total Rooms: 11
Unique Rooms: 11
1,110
19
11,316
17,379
805
0.73
38,067
1,587
1.43
3,440
0
0
200
200
200
200
Z:\ ...\Mann Realty Heat Load.CH8 Tuesday, January 12, 2021, 11:05 AM
Chvac - Full Commercial HVAC Loads Calculation Program Elite Software Development, Inc.
Fort Pierce Engineering Beachfront Mann Realty
Fort Pierce, FL 34950 Page 6
Air Handler #1 - AHU 1 - Total Load Summary
Air Handler Description:AHU 1 Constant Volume - Proportion
Supply Air Fan:Draw-Thru with program estimated horsepower of 0.15 HP
Fan Input:0% motor and fan efficiency with 0 in. water across the fan
Sensible Heat Ratio:0.91 --- This system occurs 1 time(s) in the building. ---
Air System Peak Time:1pm in August.
Outdoor Conditions:Clg: 93° DB, 80° WB, 133.69 grains, Htg: 41° DB
Indoor Conditions:Clg: 75° DB, 50% RH, Htg: 75° DB
Because of the diversity in room, plenum and ventilation loads, the room sensible peak time in August at 7am is different
from the total system peak time, hence the air system CFM was computed using a room sensible load of 36,268.
Summer: Ventilation controls outside air, ----- Winter: Ventilation controls outside air.
Room Space sensible loss:17,379 Btuh
Infiltration sensible loss:0 Btuh 0 CFM
Outside Air sensible loss: 7,340 Btuh 200 CFM
Supply Duct sensible loss:0 Btuh
Return Duct sensible loss:0 Btuh
Return Plenum sensible loss:0 Btuh
Total System sensible loss:24,719 Btuh
Heating Supply Air: 17,379 / (.999 X 1.08 X 20) =805 CFM
Winter Vent Outside Air (24.8% of supply) =200 CFM
Room space sensible gain:33,752 Btuh
Infiltration sensible gain:0 Btuh
Draw-thru fan sensible gain:380 Btuh
Supply duct sensible gain:0 Btuh
Reserve sensible gain:0 Btuh
Total sensible gain on supply side of coil:34,132 Btuh
Cooling Supply Air: 36,648 / (.999 X 1.1 X 21) =1,587 CFM
Summer Vent Outside Air (12.6% of supply) =200 CFM
Return duct sensible gain:0 Btuh
Return plenum sensible gain:0 Btuh
Outside air sensible gain:3,958 Btuh 200 CFM
Blow-thru fan sensible gain:0 Btuh
Total sensible gain on return side of coil:3,958 Btuh
Total sensible gain on air handling system:38,090 Btuh
Room space latent gain:3,440 Btuh
Infiltration latent gain:0 Btuh
Outside air latent gain:9,459 Btuh
Total latent gain on air handling system:12,899 Btuh
Total system sensible and latent gain:50,989 Btuh
Check Figures
Total Air Handler Supply Air (based on a 21° TD):1,587 CFM
Total Air Handler Vent. Air (12.60% of Supply):200 CFM
Total Conditioned Air Space:1,110 Sq.ft
Supply Air Per Unit Area:1.4300 CFM/Sq.ft
Area Per Cooling Capacity:261.2 Sq.ft/Ton
Cooling Capacity Per Area:0.0038 Tons/Sq.ft
Heating Capacity Per Area:22.27 Btuh/Sq.ft
Total Heating Required With Outside Air:24,719 Btuh
Total Cooling Required With Outside Air:4.25 Tons
Z:\ ...\Mann Realty Heat Load.CH8 Tuesday, January 12, 2021, 11:05 AM
Chvac - Full Commercial HVAC Loads Calculation Program Elite Software Development, Inc.
Fort Pierce Engineering Beachfront Mann Realty
Fort Pierce, FL 34950 Page 7
Air Handler #2 - AHU 2 - Summary Loads
Rm
No
Description
Room Peak Time
Area
People
Volume
Htg.Loss
Htg.CFM
CFM/Sqft
Sen.Gain
Clg.CFM
CFM/Sqft
Lat.Gain
S.Exh
W.Exh
Htg.O.A.
Req.CFM
Act.CFM
Clg.O.A.
Req.CFM
Act.CFM
12 Janitor
9pm August
32
1
320
275
13
0.40
771
32
1.00
200
0
0
Direct
6
8
Direct
6
6
13 Break Room
9pm August
80
2
800
688
32
0.40
1,803
75
0.93
400
0
0
Direct
15
20
Direct
15
15
14 Work Area
4pm August
950
18
9,500
5,810
269
0.28
21,485
890
0.94
3,600
0
0
Direct
179
172
Direct
179
179
Room Peak Totals:
Total Rooms: 3
Unique Rooms: 3
1,062
21
10,620
6,774
314
0.30
24,060
997
0.94
4,200
0
0
200
200
200
200
Z:\ ...\Mann Realty Heat Load.CH8 Tuesday, January 12, 2021, 11:05 AM
Chvac - Full Commercial HVAC Loads Calculation Program Elite Software Development, Inc.
Fort Pierce Engineering Beachfront Mann Realty
Fort Pierce, FL 34950 Page 8
Air Handler #2 - AHU 2 - Total Load Summary
Air Handler Description:AHU 2 Constant Volume - Proportion
Supply Air Fan:Draw-Thru with program estimated horsepower of 0.09 HP
Fan Input:0% motor and fan efficiency with 0 in. water across the fan
Sensible Heat Ratio:0.85 --- This system occurs 1 time(s) in the building. ---
Air System Peak Time:5pm in August.
Outdoor Conditions:Clg: 94° DB, 80° WB, 133.44 grains, Htg: 41° 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:6,774 Btuh
Infiltration sensible loss:0 Btuh 0 CFM
Outside Air sensible loss: 7,340 Btuh 200 CFM
Supply Duct sensible loss:0 Btuh
Return Duct sensible loss:0 Btuh
Return Plenum sensible loss:0 Btuh
Total System sensible loss:14,114 Btuh
Heating Supply Air: 6,774 / (.999 X 1.08 X 20) =314 CFM
Winter Vent Outside Air (63.7% of supply) =200 CFM
Room space sensible gain:23,871 Btuh
Infiltration sensible gain:0 Btuh
Draw-thru fan sensible gain:239 Btuh
Supply duct sensible gain:0 Btuh
Reserve sensible gain:0 Btuh
Total sensible gain on supply side of coil:24,110 Btuh
Cooling Supply Air: 24,110 / (.999 X 1.1 X 22) =997 CFM
Summer Vent Outside Air (20.1% of supply) =200 CFM
Return duct sensible gain:0 Btuh
Return plenum sensible gain:0 Btuh
Outside air sensible gain:4,178 Btuh 200 CFM
Blow-thru fan sensible gain:0 Btuh
Total sensible gain on return side of coil:4,178 Btuh
Total sensible gain on air handling system:28,288 Btuh
Room space latent gain:4,200 Btuh
Infiltration latent gain:0 Btuh
Outside air latent gain:9,236 Btuh
Total latent gain on air handling system:13,436 Btuh
Total system sensible and latent gain:41,723 Btuh
Check Figures
Total Air Handler Supply Air (based on a 22° TD):997 CFM
Total Air Handler Vent. Air (20.06% of Supply):200 CFM
Total Conditioned Air Space:1,062 Sq.ft
Supply Air Per Unit Area:0.9386 CFM/Sq.ft
Area Per Cooling Capacity:305.4 Sq.ft/Ton
Cooling Capacity Per Area:0.0033 Tons/Sq.ft
Heating Capacity Per Area:13.29 Btuh/Sq.ft
Total Heating Required With Outside Air:14,114 Btuh
Total Cooling Required With Outside Air:3.48 Tons
Z:\ ...\Mann Realty Heat Load.CH8 Tuesday, January 12, 2021, 11:05 AM