【正文】 ............................................................ 1 Naturalclimatic conditions .............................................................................. 1 2 Design of heptafluoropropane fire extinguishing system .................................. 2 Heptafluoropropane fire extinguishing system ................................................ 2 General provisions of the gas extinguishing system ............................. 2 Characteristics ....................................................................................... 3 Division of fire protection district ......................................................... 4 Fire extinguishing system calculation .............................................................. 5 Firefighting design concentration ........................................................ 5 Fireextinguishing desigh ...................................................................... 6 Fireextinguishing cylinder specifications and quantity ....................... 7 Agent application .................................................................................. 8 Nozzle size and determine the number ................................................. 8 Pipeline design average flow .............................................................. 10 Select the work pipe size ................................................................ 15 Filling rate calculation ......................................................................... 20 Network pipes internal volume ........................................................... 23 Rated pressure ................................................................................... 25 Calculate the total storage container with gas volume ...................... 25 Point pressure in the storage container .............................................. 28 Calculating line loss .......................................................................... 29 Calculating elevation head ................................................................ 31 V Calculating of nozzle working pressure ............................................ 32 Checking design calculations results ................................................ 33 Equivalent nozzle orifice size and nozzle specifications .................. 33 Summary ........................................................................................................ 36 3 Design of automatic fire alarm system .............................................................. 37 System protection and fire detector settings parts .......................................... 37 System protection rating ....................................................................... 37 Fire detector settings parts .................................................................. 37 Division of alarm and detection ..................................................................... 37 Division of alarm areas ....................................................................... 37 Division of detection areas .................................................................. 38 System structure and select ............................................................................ 39 System structure .................................................................................. 39 Fire detection and alarm system .......................................................... 39 Design of detection and alarm ........................................................................ 40 Design of fire detection and alarm system .......................................... 40 Design of bustible gas detection and alarm system ...................... 41 Selection of fire detector ................................................................................ 41 General provisions .............................................................................. 41 Selection of fire detector ..................................................................... 42 Detector layout ............................................................................................... 42 The basic principles ............................................................................. 42 Determine the number of detectors ..................................................... 43 Arrangement of detector ...................................................................... 44 Manual alarm ................................................................................................. 50 Fire and (or) optical alarm system set ............................................................ 50 VI Summary ........................................................................................................ 51 4 Safety evacuation time ........................................................................................ 52 5 Conclusion ............................................................................................................ 72 6 Thanks .................................................................................................................. 73 7 Bibliography ........................................................................................................ 74 Appendix 1 The size of Seamless steel tube.......................................................... 76 Appendix 2 The size of Elbow ............................................................................... 77 Appendix 3 The size of Teejunction ..................................................................... 78 Appendix 4 The size of Adjustable joints ............................................................. 79 Appendix 5 (g) when the booster injection rate heptfluoride propane fire extinguishing system nozzle orifice orifice unit are