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HomeMy WebLinkAboutAir System Sizing Summary for RTU-1Air System Sizing Summary for RTU-1 Project Name: 2190262 7-Elevenl Load Calcs 06/08/2020 Prepared by: Cuhaci and Peterson 01:17PM Air System Information AirSystem Name........................................................... RTU-1 Number of zones ... ... .-------------------------------------------------------------------- -1 Equipment Class .--------------------------------- PKG ROOF Floor Area .. --- -- ----- -----------.........----------..................3218.0 ftz Air System Type........................................................... SZCAV Location...................................................... Fort Pierce, Florida Sizing Calculation Information Calculation Months .............................................. Jan to Dec Zone CFM Sizing... .................. Sum of space airflow rates Sizing Data.............................................................. Calculated Space CFM Sizing ................ Individual peak space loads Central Cooling Coil Sizing Data Total coil load .. ..............................................................14.8 Tons Load occurs at............................ . ................. Jul 1400 Total coil load ...... --- .. -- .---------- .............................. 177.8 MBH OA DB / WB ..............--..........................................------. 90.6 / 77.9 °F Sensible coil load............................................................. 125.9 MBH Entering DB / WB ................... .................................... 77.3 / 66.7 °F Coil CFM at Jul 1400-------------------------------------------------- -- 6135 CFM Leaving DB / WB--------------------------------------------------------- 58.2 / 57.3 °F Max block CFM -- -- -.. ....... .................................-------. 6135 CFM Coil ADP..................----............ ------------------......------------... 56.1 °F Sum of peak zone CFM ........................... ............ 6135 CFM Bypass Factor----------...------------------------------............------...... .... 0.100 Sensible heat ratio.------................................................... 0.708 Resulting RH ............ ----------------------------- - - - - .................... 58 % CFM/Ton ............................................................................ 414.1 Design supply temp................................................................ 58.0 °F ftz/Ton ------------------------................................................ 217.2 Zone T-stat Check .................. ............................................. .1 of 1 OK BTU/(hr-ftz)-------------------------------------------------........................-- 55.3 Max zone temperature deviation .... ------ ---- ............------ ... 0.0 °F Water flow @ 10.0 °F rise ------------------------------------------------ N/A Central Heating Coil Sizing Data Maxcoil load.......................................................... .. .. .. 28.2 MBH Load occurs at .................................................... Des Htg Coil CFM at Des Htg ............ -..................................... 6135 CFM BTU/(hr•ftz)------------------------------------------- ------------------------------------- 8.8 Max coil CFM . -- -- ------------ -- -- --- ---- --- ------------------ 6135 CFM Ent. DB / Lvg DB......................................................... 68.3 / 72.5 °F Water flow @ 20.0 °F drop ............................................. N/A Supply Fan Sizing Data Actual max CFM ------------------------ ---- -- ----------- ---------- 6135 CFM Fan motor BHP .---- ----------.. -- ------- ... -- ............................. 0.84 BHP Standard CFM -- ----- - ----- --- ------- ---- ....................... 6131 CFM Fan motor kW------------------------------------------------............------......... 0.67 kW Actual max CFM/ftz .................. -----------------------------------------1.91 CFM/ftz Fan static......................................................... -------------------------- 0.50 in wg Outdoor Ventilation Air Data Design airflow CFM .......... -------------------------------------------------- 381 CFM CFM/person............................................................................ 15.22 CFM/person CFM/ftz ............. -------------------------------............------------...... 0.12 CFM/ftz Digitally signed by Jose J Diaz -Velazquez _� 74 Reason: This document has been digitally signed and sealed by Jose J. Diaz -Velazquez — - on the date adjacent to the seal. Printed copies of this document are not considered Z signed and sealed and the signature must be verified on any electronic copies. �13 '. ((/ ` O '• STATE OF Date: 2020.06.08 13:27:06-04'00' i i��N, �s ////Y/0NA1_ Hourly Analysis Program 5.11 Page 1 of 2 Air System Design Load Summary for RTU-1 Project Name: 2190262 7-Elevenl Load Calcs 06/08/2020 Prepared by: Cuhaci and Peterson 01:17PM DESIGN COOLING DESIGN HEATING COOLING DATA AT Jul 1400 COOLING OA DB ! WB 90.6 OF / 77.9 OF HEATING DATA AT DES HTG HEATING OA DB / WB 43.0 OF / 36.1 OF ZONE LOADS Details Sensible BTU/hr Latent BTU/hr Details Sensible BTU/hr Latent BTU/hr Window & Skylight Solar Loads 216 ft2 2382 - 216 ft2 - - Wall Transmission 2622 ft2 2273 - 2622 ft2 3137 Roof Transmission 3218 ft2 5570 - 3218 ft2 2732 - Window Transmission 216 ft2 772 - 216 ft2 1575 Skylight Transmission 0 ft2 0 - 0 ft2 0 - Door Loads 0 ft2 0 - 0 ft2 0 Floor Transmission 3218 ft2 0 - 3218 ft2 2780 - Partitions 0 ft2 0 0 ft2 0 - Ceiling 0 ft2 0 0 ft2 0 - Overhead Lighting 4827 W 13131 0 0 - Task Li htin 0 W 0 - 0 0 Electric Equipment 12872 W 39947 - 0 0 - People 25 5227 6750 0 0 0 Infiltration - 4517 8326M38 7814 0 Miscellaneous - 38000 25000 0 0 SafetyFactor 0%/0% 0 0 0 0 >> Total Zone Loads 111819 4007618037 0 Zone Conditioning- 117791 40076 19370 0 Plenum Wall Load 0% 0 - 0 - Plenum Roof Load 0% 0 - 0 - Plenum Lighting Load 0% 0 0 - Return Fan Load 6135 CFM 0 0 - Ventilation Load 381 CFM 5842 11816 11071 0 Supply Fan Load 6135 CFM 2274 - 6135 CFM -2274 Space Fan Coil Fans - 0 - - 0 - Duct Heat Gain / Loss 0% 0 - 0% 0 - >> Total System Loads 125907 51891 28167 0 Central Cooling Coil - 1259071 51897 - 0 0 Central Heating Coil - 0 - - 28167 - >> Total Conditioning 1259071 51897. 281671 0 Key: Positive values are cig loads Negative values are htg loads Positive values are htg loads Negative values are cig loads Hourly Analysis Program 5.11 Page 2 of 2