TAB E - VA HVAC Design Manual VA T.pdf
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About this file
This is a trace load calculation and air flow calculation spreadsheet for HVAC systems at the VA Medical Center in Shreveport, LA. The document details calculations for two air handling units (AHU-1 and AHU-2) serving operating rooms and related medical spaces.
The spreadsheet provides detailed specifications for multiple rooms including operating rooms, sterile supply areas, corridors, and storage spaces. It includes key parameters such as room areas (ranging from 80-1238 SF), cooling and heating loads (BTU/h), air flow requirements (CFM), and ventilation rates (air changes per hour). The calculations use global variables of 17°F cooling DT and 20°F heating DT. All spaces are served by VAV (Variable Air Volume) systems, with operating rooms requiring 20 air changes per hour for supply air and 4 air changes per hour for outside air. The document appears to be part of an engineering analysis for HVAC repairs or upgrades at the facility.
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Text version
VAMC SHREVEPORT LA - REPAIR OR HVAC AND ROOF
VA Medical Center November 6, 2019
Trace Load Calculation Results and Air Flow Calculations Shreveport LA
Global Variables
Cooling DT 17 F
Heating DT 20 F
AHU
AHU Number Trace Room Name and Number ASHRAE 62 Room Type
Area
(SF)
Height
(ft)
People
Count
System
Type VAV or CV
Sensible
Cooling
(BTUH)
Latent
Cooling
(BTUH)
VAV
Heating
(BTUH)
Perimeter
Heat
(BTUH)
Total Heat
(BTUH)
Cooling
(CFM)
Heating
(CFM)
Supply
(AC/hr)
OA
(AC/hr)
Exhaust
OA CFM
per
Person
OA CFM
per SF
Max.
Supply
(CFM)
Min.
Supply
(CFM)
Exhaust
(CFM)
OA
(CFM)
Min. OA
Fraction
Room Status VAV or
CV
Min.
Reheat T Original CFM
AHU-1 (OLD OR) Room - 005 OR 5 Pharmacy (prep. area) 378 8.83 8 VAV 18,643 2,000 -3,052 0 -3,052 1,015 147 20 4 0.00% 5 0.18 1,113 1,113 0 223 20.00% VAV POS 0.00% 77 1,113
AHU-1 (OLD OR) Room - 006 OR 6 Pharmacy (prep. area) 663 9 8 VAV 25,693 2,000 -10,429 0 -10,429 1,399 501 20 4 0.00% 5 0.18 1,989 1,989 0 398 20.00% VAV POS 0.00% 79 1,989
AHU-1 (OLD OR) Room - 007 OR 7 Pharmacy (prep. area) 513 9 8 VAV 24,763 2,000 -7,901 0 -7,901 1,349 380 20 4 0.00% 5 0.18 1,539 1,539 0 308 20.00% VAV POS 0.00% 79 1,539
AHU-1 (OLD OR) Room - 018 Equipment Room Pharmacy (prep. area) 185 9 0 VAV 13,430 0 -2,299 0 -2,299 732 111 6 2 0.00% 5 0.18 732 167 0 56 7.59% VAV POS 0.00% 87 167
AHU-1 (OLD OR) Room - 019 Scrub for OR 6 Pharmacy (prep. area) 96 9 2 VAV 2,554 500 -1,320 0 -1,320 139 63 6 2 0.00% 5 0.18 139 86 0 29 20.71% VAV POS 0.00% 88 86
AHU-1 (OLD OR) Room - 020 Substerile for OR 6 and 7 Pharmacy (prep. area) 144 9 1 VAV 15,122 500 -2,440 0 -2,440 824 117 6 2 0.00% 5 0.18 824 130 0 43 5.25% VAV POS 0.00% 92 130
AHU-1 (OLD OR) Room - 021 SUb sterile for OR 5 Pharmacy (prep. area) 80 9 1 VAV 14,437 500 -2,335 0 -2,335 786 112 6 2 0.00% 5 0.18 786 112 0 24 3.05% VAV POS 0.00% 94 112
AHU-1 (OLD OR) Room - 022 Scrub for OR 5 Pharmacy (prep. area) 100 9 2 VAV 2,583 500 -1,333 0 -1,333 141 64 6 2 0.00% 5 0.18 141 90 0 30 21.33% VAV POS 0.00% 88 90
AHU-1 (OLD OR) Room - 025 Old OR Corridor Pharmacy (prep. area) 631 9 1 VAV 4,421 0 -2,113 0 -2,113 241 102 8 2 0.00% 5 0.18 757 757 0 189 25.00% VAV POS 0.00% 77 568
AHU-1 (OLD OR) REST OF SPACES ON THIS SYSTEM Office space 6,440 6,440
14,459 12,422 0 1,299
Plus 5% Leakage 15,182
Plus 5% Safety 15,941 3,985 Based on critical space
AHU-2 (NEW OR) Room - 001 OR 1 Pharmacy (prep. area) 490 9 8 VAV 15,639 2,000 -2,804 0 -2,804 852 135 20 4 0.00% 5 0.18 1,469 1,469 0 294 20.00% VAV POS 0.00% 76 1,469
AHU-2 (NEW OR) Room - 002 OR2 Pharmacy (prep. area) 694 9 8 VAV 17,947 2,000 -3,022 0 -3,022 978 145 20 4 0.00% 5 0.18 2,081 2,081 0 416 20.00% VAV POS 0.00% 75 2,081
AHU-2 (NEW OR) Room - 003 OR3 Pharmacy (prep. area) 783 9.6 8 VAV 19,935 2,000 -3,366 0 -3,366 1,086 162 20 4 0.00% 5 0.18 2,506 2,506 0 501 20.00% VAV POS 0.00% 75 2,506
AHU-2 (NEW OR) Room - 004 OR 4 Pharmacy (prep. area) 759 9.6 8 VAV 21,559 2,000 -3,520 0 -3,520 1,174 169 20 4 0.00% 5 0.18 2,428 2,428 0 486 20.00% VAV POS 0.00% 75 2,428
AHU-2 (NEW OR) Room - 008 Sub Sterile for OR 1 and 2 Pharmacy (prep. area) 155 9 1 VAV 15,222 500 -2,459 0 -2,459 829 118 6 2 0.00% 5 0.18 829 140 0 47 5.61% VAV POS 0.00% 91 140
AHU-2 (NEW OR) Room - 009 Scrub OR 1 and 2 Pharmacy (prep. area) 88 9 2 VAV 2,530 500 -1,239 0 -1,239 138 60 6 2 0.00% 5 0.18 138 79 0 26 19.16% VAV POS 0.00% 89 79
AHU-2 (NEW OR) Room - 010 Sterile Supply Pharmacy (prep. area) 160 9 0 VAV 2,829 250 -1,435 0 -1,435 154 69 6 2 0.00% 5 0.18 154 144 0 48 31.06% VAV POS 0.00% 83 144
AHU-2 (NEW OR) Room - 011 Substerile for OR 3 and 4 Pharmacy (prep. area) 160 9 1 VAV 15,079 500 -2,441 0 -2,441 821 117 6 2 0.00% 5 0.18 821 144 0 48 5.83% VAV POS 0.00% 90 144
AHU-2 (NEW OR) Room - 012 Scrub for OR 3 and 4 Pharmacy (prep. area) 120 9 2 VAV 2,776 500 -1,327 0 -1,327 151 64 6 2 0.00% 5 0.18 151 108 0 36 23.81% VAV POS 0.00% 86 108
AHU-2 (NEW OR) Room - 013 Sterile Supply Pharmacy (prep. area) 189 9 0 VAV 3,058 250 -1,515 0 -1,515 167 73 6 2 0.00% 5 0.18 170 170 0 57 33.33% VAV POS 0.00% 82 170
AHU-2 (NEW OR) Room - 014 Bathroom Pharmacy (prep. area) 96 9 0 VAV 829 0 -428 0 -428 45 21 6 2 0.00% 5 0.18 86 86 0 29 33.33% VAV POS 0.00% 79 86
AHU-2 (NEW OR) Room - 015 Storage Pharmacy (prep. area) 210 9 0 VAV 1,842 0 -936 0 -936 100 45 6 2 0.00% 5 0.18 189 189 0 63 33.33% VAV POS 0.00% 79 189
AHU-2 (NEW OR) Room - 016 Storage Pharmacy (prep. area) 306 9 0 VAV 2,684 0 -1,364 0 -1,364 146 66 6 2 0.00% 5 0.18 275 275 0 92 33.33% VAV POS 0.00% 79 275
AHU-2 (NEW OR) Room - 017 Storage Pharmacy (prep. area) 144 9 0 VAV 1,263 0 -642 0 -642 69 31 6 2 0.00% 5 0.18 130 130 0 43 33.33% VAV POS 0.00% 79 130
AHU-2 (NEW OR) Room - 023 New OR Corridor Pharmacy (prep. area) 1238 9 0 VAV 10,243 0 -4,271 0 -4,271 558 205 8 2 0.00% 5 0.18 1,486 1,486 0 372 25.00% VAV POS 0.00% 77 1,115
AHU-2 (NEW OR) Room - 024 Nurse Station Pharmacy (prep. area) 273 9 3 VAV 12,430 750 -2,128 0 -2,128 677 102 6 2 0.00% 5 0.18 677 246 0 82 12.10% VAV POS 0.00% 82 246
13,590 11,679 0 2,638
Plus 5% Leakage 14,269
Plus 5% Safety 14,983 4,944 Based on critical space
Room Air
Balance
Air Flows Due to
LoadsRoom Data Minimum Air Flow Requirements Final Room ConditionsRoom Peak Loads
File details come from the government source that posted it. Updated .