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CERT OF OCCU
Bjs!Tztufn!Tj{joh!Tvnnbsz!gps!BIV.20DV.2 BQQSPWFEBQQSPWFEBQQSPWFEBQQSPWFE Project Name: 21035 DCA GatewayProject Name: 21035 DCA GatewayProject Name: 21035 DCA Gateway08/23/2021 NFDIBOJDBM Prepared by: Thomas E. Henz, PE, Inc.04:46PM KfssbijboN!1:02703132 Bjs!Tztufn!Jogpsnbujpo Air System Name BIV.20DV.2 Number of zones 2 Equipment Class TQMU!BIV Floor Area 251/1 ft² T\[DBWXftu!Qbmn!Cfbdi-!Gmpsjeb Air System Type Location Tj{joh!Dbmdvmbujpo!Jogpsnbujpo \[pof!boe!Tqbdf!Tj{joh!Nfuipe; Zone CFM Tvn!pg!tqbdf!bjsgmpx!sbuft Calculation Months Kvm!up!Kvm Joejwjevbm!qfbl!tqbdf!mpbetDbmdvmbufe Space CFM Sizing Data Dfousbm!Dppmjoh!Dpjm!Tj{joh!Ebub Total coil load 3/7 TonsLoad occurs at Kvm!2711 Total coil load 41/9 MBHOA DB / WB :2/1!0!89/1°F 32/5 MBH 86/9!0!77/6°F Sensible coil load Entering DB / WB Coil CFM at Jul 1600 2278 CFMLeaving DB / WB 69/:!0!69/1°F Max block CFM 2278 CFMCoil ADP 68/1°F Sum of peak zone CFM 2278 CFMBypass Factor 1/211 1/7:573% Sensible heat ratio Resulting RH ft²/Ton 65/7 Design supply temp. 69/1°F BTU/(hr-ft²) 32:/:Zone T-stat Check 2!pg!2 OK Water flow @ 10.0 °F rise O0B Max zone temperature deviation 1/1°F Dfousbm!Ifbujoh!Dpjm!Tj{joh!Ebub Max coil load 1/9 MBHLoad occurs at Eft!Iuh Coil CFM at Des Htg 2278 CFMBTU/(hr-ft²)6/8 Max coil CFM 2278 CFMEnt. DB / Lvg DB 81/2!0!81/8°F O0B Water flow @ 20.0 °F drop Tvqqmz!Gbo!Tj{joh!Ebub Actual max CFM 2278 CFMFan motor BHP 1/11 BHP Standard CFM 2277 CFMFan motor kW 1/11 kW 9/45 CFM/ft² 1/11 in wg Actual max CFM/ft² Fan static Pvuepps!Wfoujmbujpo!Bjs!Ebub CFM/person 1/11 CFM/person Design airflow CFM 1 CFM CFM/ft² 1/11 CFM/ft² Hourly Analysis Program v4.50Page 1 of 1 Bjs!Tztufn!Eftjho!Mpbe!Tvnnbsz!gps!BIV.20DV.2 BQQSPWFEBQQSPWFEBQQSPWFEBQQSPWFE Project Name: 21035 DCA GatewayProject Name: 21035 DCA GatewayProject Name: 21035 DCA Gateway08/23/2021 NFDIBOJDBM Prepared by: Thomas E. Henz, PE, Inc.04:46PM KfssbijboN!1:02703132 EFTJHO!DPPMJOHEFTJHO!IFBUJOH DPPMJOH!EBUB!BU!Kvm!2711IFBUJOH!EBUB!BU!EFT!IUH DPPMJOH!PB!EC!0!XC!!!:2/1!±G!0!89/1!±GIFBUJOH!PB!EC!0!XC!!!54/1!±G!0!47/2!±G TfotjcmfMbufouTfotjcmfMbufou \[POF!MPBETEfubjmt)CUV0is*)CUV0is*Efubjmt)CUV0is*)CUV0is* Window & Skylight Solar Loads0 ft²0-0 ft²-- Wall Transmission100 ft²459-100 ft²573- Roof Transmission0 ft²0-0 ft²0- Window Transmission0 ft²0-0 ft²0- Skylight Transmission0 ft²0-0 ft²0- Door Loads0 ft²0-0 ft²0- Floor Transmission140 ft²0-140 ft²119- Partitions0 ft²0-0 ft²0- Ceiling0 ft²0-0 ft²0- Overhead Lighting210 W574-00- Task Lighting0 W0-00- Electric Equipment0 W0-00- People2368410000 Infiltration-00-00 Miscellaneous-200009000-00 Safety Factor0% / 0%000%00 ??!Upubm!\[pof!Mpbet.32512:521.7:41 Zone Conditioning-213719410-7950 Plenum Wall Load0%0-00- Plenum Roof Load0%0-00- Plenum Lighting Load0%0-00- Return Fan Load1167 CFM0-1167 CFM0- Ventilation Load0 CFM000 CFM00 Supply Fan Load1167 CFM0-1167 CFM0- Space Fan Coil Fans-0--0- Duct Heat Gain / Loss0%0-0%0- ??!Upubm!Tztufn!Mpbet.32482:521.8:61 Central Cooling Coil-213719412-00 Central Heating Coil-0--795- ??!Upubm!Dpoejujpojoh.32482:523.8:61 Lfz;Qptjujwf!wbmvft!bsf!dmh!mpbetQptjujwf!wbmvft!bsf!iuh!mpbet Ofhbujwf!wbmvft!bsf!iuh!mpbetOfhbujwf!wbmvft!bsf!dmh!mpbet Hourly Analysis Program v4.50Page 1 of 1