Eng Khalid ALTaslaq 1
ﺑﺎﻟﺮﻏﻢ ﻣﻦ أن اﻟﺘﮭﻮﯾﺔ ﺗﻜﻮن ﻣﺒﻨﯿﺔ ﻋﻠﻰ أﺳﺲ ﺻﺤﯿﺔ ﺗﺘﻌﻠﻖ ﺑﻤﺪى ﻣﻼءﻣﺔ اﻟﺒﯿﺌﺔ اﻟﺘﻲ ﯾﻮﺟﺪ ﻓﯿﮭﺎ أﺷﺨﺎص ﻣﻌﯿﻨﻮن وﯾﻘﻮﻣﻮن ﺑﻨﺸﺎط ﻣﻌﯿﻦ ﻣﻊ ﻣﻌﺎﯾﯿﺮ اﻟﺮاﺣﺔ ﻓﺎن اﻟﺴﺒﺐ ﻓﻲ ﺗﻮﻛﯿﻞ ھﺬه اﻟﻤﮭﻤﺔ ﻟﻤﮭﻨﺪﺳﻲ اﻟﻤﯿﻜﺎﻧﯿﻚ ھﻮ أن ﻋﻤﻠﯿﺔ اﻟﺘﮭﻮﯾﺔ ﺗﻜﻮن ﺑﻮاﺳﻄﺔ اﻟﮭﻮاء وﻛﻤﺎ ھﻮ ﻣﻌﻠﻮم ﻓﺎن ﻋﻤﻠﯿﺔ اﻟﺘﻜﯿﯿﻒ ﺗﻜﻮن ﺑﻮاﺳﻄﺔ اﻟﮭﻮاء أﯾﻀﺎ وان ﻛﻤﯿﺎت اﻟﮭﻮاء اﻟﻼزﻣﺔ ﻟﻠﺘﮭﻮﯾﺔ ﺗﺨﺘﻠﻒ ﻓﻲ ﻗﯿﻤﺘﮭﺎ ﻋﻦ ﺗﻠﻚ اﻟﺘﻲ ﻧﺤﺘﺎﺟﮭﺎ ﻟﺘﺒﺮﯾﺪ ذات اﻟﻤﻜﺎن ﻟﺪرﺟﺔ ﺣﺮارة ﻣﻌﯿﻨﺔ ﻣﻤﺎ ﯾﻌﻨﻲ أﻧﮫ إن ﻟﻢ ﺗﺘﻢ ﻋﻤﻠﯿﺔ اﻟﺘﻨﺴﯿﻖ ﻋﻠﻰ اﻟﻮﺟﮫ اﻟﻤﻄﻠﻮب ﻓﺴﯿﺆﺛﺮ اﺣﺪ اﻟﻨﻮﻋﯿﻦ ﻋﻠﻰ اﻵﺧﺮ ﻓﻠﻮ ﻛﺎﻧﺖ ﻣﺜﻼ ﻛﻤﯿﺎت اﻟﺘﮭﻮﯾﺔ اﻟﻤﻄﻠﻮﺑﺔ ﻟﻤﻜﺎن ﻣﻌﯿﻦ اﻛﺒﺮ ﻣﻦ ﻛﻤﯿﺔ اﻟﮭﻮاء اﻟﻼزم ﻟﻌﻤﻠﯿﺔ اﻟﺘﺒﺮﯾﺪ وﻛﻼ اﻟﻨﻮﻋﯿﻦ ﯾﺰود ﻣﻦ ﻧﻈﺎم واﺣﺪ ﻓﺈن درﺟﺔ ﺣﺮارة اﻟﻤﻜﺎن ﺳﺘﻨﺨﻔﺾ دون اﻟﺤﺪ اﻟﻤﻄﻠﻮب وﻟﺬﻟﻚ ﻓﻼ ﺑﺪ ﻣﻦ أن ﺗﻜﻮن ﻧﻔﺲ ﻛﻤﯿﺔ اﻟﮭﻮاء ﺗﺨﺪم ﻛﺎﻓﺔ اﻟﻤﺘﻄﻠﺒﺎت ﻟﮭﺬا اﻟﻤﻜﺎن . 2 Eng Khalid ALTaslaq
-1ﻣﺎ ھﻲ أﺳﺒﺎب ﺗﮭﻮﯾﺔ اﻟﻤﺒﺎﻧﻲ؟ -2ﻣﺎ ھﻲ ﻣﺼﺎدر اﻟﺘﮭﻮﯾﺔ ؟ -3ﻣﺎ ھﻲ طﺮق اﻟﺘﮭﻮﯾﺔ اﻟﻤﯿﻜﺎﻧﯿﻜﯿﺔ؟ -4أﻧﻮاع اﻟﻔﻼﺗﺮ وﻛﯿﻔﯿﺔ ﺿﺒﻂ ﺟﻮدة اﻟﮭﻮاء -5ﻛﯿﻒ ﺗﺤﺘﺴﺐ ﻗﯿﻢ اﻟﺘﮭﻮﯾﺔ اﺳﺘﻨﺎدا ﻟﻠﻤﺮاﺟﻊ اﻟﻤﺴﺘﺨﺪﻣﺔ ﻓﻲ ھﺬا اﻟﻤﺠﺎل؟ Eng Khalid ALTaslaq 3
ان اﻟﮭﺪف اﻟﺮﺋﯿﺴﻲ ﻣﻦ ﺗﮭﻮﯾﺔ اﻟﻤﺒﺎﻧﻲ ھﻮ ﺿﺒﻂ ﺟﻮدة اﻟﮭﻮاء وان اﺑﺮز اﻟﻌﻮاﻣﻞ اﻟﺘﻲ ﺗﺆﺛﺮ ﻓﻲ ﺟﻮدة اﻟﮭﻮاء ھﻲ: -1 ﻛﻤﯿﺔ ﻏﺎز ﺛﺎﻧﻲ اﻛﺴﯿﺪ اﻟﻜﺮﺑﻮن واﻟﻐﺎزات اﻟﻀﺎرة اﻷﺧﺮى -2 ﻛﻤﯿﺔ ﻏﺎز اﻷﻛﺴﺠﯿﻦ واﻟﻐﺎزات اﻟﻨﺎﻓﻌﺔ اﻷﺧﺮى -3 اﻟﺮطﻮﺑﺔ اﻟﻨﺴﺒﯿﺔ ﻓﻲ اﻟﮭﻮاء -4 اﻟﺮواﺋﺢ ﺑﺸﻜﻞ ﻋﺎم. -5 اﻟﻌﻮاﻟﻖ (parts of Contaminants per million parts of air ) PPM Eng Khalid ALTaslaq 4
Eng Khalid ALTaslaq 5
إن اﻟﻤﺒﺪأ اﻟﺮﺋﯿﺴﻲ اﻟﺬي ﺗﻌﺘﻤﺪ ﻋﻠﯿﮫ ﻋﻤﻠﯿﺎت اﻟﺘﮭﻮﯾﺔ ھﻮ ﺗﺨﻔﯿﻒ ﺗﺮﻛﯿﺰ اﻟﻤﻠﻮﺛﺎت اﻟﺘﻲ ﯾﺤﺘﻮي ﻋﻠﯿﮭﺎ اﻟﮭﻮاء )(Dilution ﻷن اﺧﺘﺰال اﻟﻤﻠﻮﺛﺎت ﺑﺸﻜﻞ ﻛﻠﻲ ﻏﯿﺮ ﻣﻄﻠﻮب إﻻ ﻓﻲ ﺗﻄﺒﯿﻘﺎت ﺧﺎﺻﺔ ﺑﺎﻹﺿﺎﻓﺔ إﻟﻰ ﺻﻌﻮﺑﺔ ﺗﻄﺒﯿﻖ ذﻟﻚ ﻋﻤﻠﯿﺎ وﺗﻜﻠﻔﺘﮫ اﻟﻌﺎﻟﯿﺔ وﺗﺘﻢ ﻋﻤﻠﯿﺔ ﺗﺨﻔﯿﻒ اﻟﺘﺮﻛﯿﺰ ﺑﺨﻠﻂ ھﻮاء اﻟﺤﯿﺰ ﺑﮭﻮاء ﺧﺎرﺟﻲ ﺑﻨﺴﺐ ﻣﺘﻔﺎوﺗﺔ ﺣﺴﺐ ﻧﻮع ﻛﻞ ﺗﻄﺒﯿﻖ وﻛﻤﯿﺔ اﻟﻤﻠﻮﺛﺎت وﺗﺘﻢ ﻋﻤﻠﯿﺔ ﺗﺰوﯾﺪ اﻟﮭﻮاء ﻣﻦ ﺧﻼل: Eng Khalid ALTaslaq 6
-1اﻟﺘﮭﻮﯾﺔ اﻟﻄﺒﯿﻌﯿﺔ ﺗﻌﺘﻤﺪ ھﺬه اﻟﻄﺮﯾﻘﺔ ﻋﻠﻰ اﻟﺘﺼﻤﯿﻢ اﻟﻤﻌﻤﺎري ﺑﺎﻟﺪرﺟﺔ اﻷوﻟﻰ ﺣﯿﺚ ﯾﺠﺐ ﺗﻮﻓﺮ ﻓﺘﺤﺎت طﺒﯿﻌﯿﺔ ﺑﻨﺴﺐ ﻣﺤﺪدة وﯾﺠﺐ أن ﺗﻜﻮن أﺑﻌﺎد اﻟﻐﺮف واﻟﻤﻤﺮات وطﺮﯾﻘﺔ ﺗﻮزﯾﻌﮭﺎ ﺑﺸﺮوط ﻣﻌﯿﻨﺔ ﻟﻀﻤﺎن إﺣﺪاث ﻓﺮوﻗﺎت ﻓﻲ اﻟﻀﻐﻂ إﻻ أن ھﺬه اﻟﻄﺮﯾﻘﺔ ﻗﺪ ﻻ ﺗﻜﻮن ﻣﻨﺎﺳﺒﺔ ﻓﻲ ﺑﻌﺾ اﻷﺣﯿﺎن ﻟﻸﺳﺒﺎب اﻟﺘﺎﻟﯿﺔ: -1ﺟﻮدة اﻟﮭﻮاء اﻟﻤﻄﻠﻮب ﻗﺪ ﻻ ﺗﺘﺤﻘﻖ ﻣﻦ اﻟﮭﻮاء اﻟﻄﺒﯿﻌﻲ -2ﻗﺪ ﺗﻜﻮن درﺟﺎت اﻟﺤﺮارة ﻟﻠﮭﻮاء اﻟﻄﺒﯿﻌﻲ ﻋﺎﻟﯿﺔ أو ﻣﻨﺨﻔﻀﺔ -3ﻋﺪم اﻟﻘﺪرة ﻋﻠﻰ ﺿﺒﻂ اﻟﺮطﻮﺑﺔ اﻟﻨﺴﺒﯿﺔ Eng Khalid ALTaslaq 7
Eng Khalid ALTaslaq 8
Eng Khalid ALTaslaq 9
Eng Khalid ALTaslaq 10
-2اﻟﺘﮭﻮﯾﺔ اﻟﻤﯿﻜﺎﻧﯿﻜﯿﺔ ﺗﻌﺘﻤﺪ ھﺬه اﻟﻄﺮﯾﻘﺔ ﻋﻠﻰ اﺳﺘﺨﺪام أﻧﻈﻤﺔ وﻣﺮاوح ﺧﺎﺻﺔ ﻟﻌﻤﻠﯿﺎت اﻟﺘﮭﻮﯾﺔ وھﻨﺎك طﺮق ﻋﺪﯾﺪة ﻟﻠﺘﮭﻮﯾﺔ اﻟﻤﯿﻜﺎﻧﯿﻜﯿﺔ ﺗﺘﻤﺜﻞ ﻓﯿﻤﺎ ﯾﻠﻲ: Eng Khalid ALTaslaq 11
1- TOTAL EXTRACT OR EXHAUST AIR (TO CONTROLL CO2 AND ODORS) 2- INTRODUCE TOTAL OUT DOOR AIR (TO CONTROLL O2 AND ODDORS) 3- CYCLING AIR WITH FILTERATION WITHOUT EXTRACTION NOR INTRODUCING AIR (TO CONTROLL PPM) 4- BOTH 1 +2 (FOR PRESSURIZATION PURPOUSES) 5- ALL 1 + 2 +3 Eng Khalid ALTaslaq 12
1- TOTAL EXTRACT AIR وﻗﺪ ﺗﻜﻮن ھﺬه اﻟﻄﺮﯾﻘﺔ ﻣﻦ ﺧﻼل ﻣﺮاوح ﻣﺮﻛﺰﯾﺔ أو ﻣﺴﺘﻘﻠﺔ )ﺷﻔﺎط( وﻣﻦ اﻷﻣﺜﻠﺔ ﻋﻠﻰ اﻟﺘﻄﺒﯿﻘﺎت اﻟﺘﻲ ﺗﺴﺘﺨﺪم ﻓﯿﮭﺎ ھﺬه اﻟﻄﺮﯾﻘﺔ: Eng Khalid ALTaslaq 13
Eng Khalid ALTaslaq 14
Eng Khalid ALTaslaq 15
Eng Khalid ALTaslaq 16
2- INTRODUCE TOTAL OUTDOOR AIR وﺗﻜﻮن ھﺬه اﻟﻄﺮﯾﻘﺔ ﻣﻦ ﺧﻼل ﻣﺮاوح ﻣﺮﻛﺰﯾﺔ ﻏﺎﻟﺒﺎ وﺗﻌﺘﺒﺮ ﻣﻜﻠﻔﺔ ﺑﺴﺒﺐ ارﺗﻔﺎع طﺎﻗﺔ اﻟﺘﺒﺮﯾﺪ واﻟﺘﺪﻓﺌﺔ اﻟﻤﻄﻠﻮﺑﺔ ﻋﻨﺪﻣﺎ ﺗﻜﻮن درﺟﺎت اﻟﺤﺮارة اﻟﺨﺎرﺟﯿﺔ ﻋﺎﻟﯿﺔ أو ﻣﻨﺨﻔﻀﺔ وﻣﻦ اﻷﻣﺜﻠﺔ ﻋﻠﻰ اﻟﺘﻄﺒﯿﻘﺎت اﻟﺘﻲ ﺗﺴﺘﺨﺪم ﻓﯿﮭﺎ ھﺬه اﻟﻄﺮﯾﻘﺔ ﻏﺮف اﻟﻌﻤﻠﯿﺎت ﻓﻲ اﻟﻤﺴﺘﺸﻔﯿﺎت . Eng Khalid ALTaslaq 17
Eng Khalid ALTaslaq 18
HEAT RECLAIM SYSTEMS Eng Khalid ALTaslaq 19
HEAT RECLAIM SYSTEMS Eng Khalid ALTaslaq 20
HEAT RECLAIM SYSTEMS Eng Khalid ALTaslaq 21
HEAT RECLAIM SYSTEMS Eng Khalid ALTaslaq 22
HEAT RECLAIM SYSTEMS Eng Khalid ALTaslaq 23
HEAT RECLAIM SYSTEMS Eng Khalid ALTaslaq 24
HEAT RECLAIM SYSTEMS Eng Khalid ALTaslaq 25
3- CYCLING AIR WITH FILTRATION ﺗﺴﺘﺨﺪم ھﺬه اﻟﻄﺮﯾﻘﺔ ﻓﻲ اﻟﺘﻄﺒﯿﻘﺎت اﻟﺼﻐﯿﺮة ﻓﻲ ﺣﺠﻤﮭﺎ وﻋﺪدھﺎ ﻣﺜﻞ اﻟﻤﻜﺎﺗﺐ واﻟﻤﻨﺎزل Eng Khalid ALTaslaq 26
4- CYCLING AIR WITH FILTRATION, EXTRACTION AND INTRODUCING AIR ﺗﻌﺘﺒﺮ ھﺬه اﻟﻄﺮﯾﻘﺔ ھﻲ اﻷﻛﺜﺮ ﺷﯿﻮﻋﺎ واﻟﻤﺴﺘﺨﺪﻣﺔ ﻓﻲ ﻛﺎﻓﺔ اﻟﺘﻄﺒﯿﻘﺎت ﺣﯿﺚ ﺗﻮﻓﺮ ﻣﻦ اﺳﺘﮭﻼك اﻟﻄﺎﻗﺔ ﻧﻈﺮا ﻹﻋﺎدة ﺗﺪوﯾﺮ اﻟﮭﻮاء وﻣﻌﺎﻟﺠﺘﮫ ﻣﻦ ﺧﻼل اﻟﻔﻼﺗﺮ واﻟﺬي ﺑﺪوره ﯾﺨﻔﻒ ﻣﻦ ﻧﺴﺒﺔ اﻟﮭﻮاء اﻟﺨﺎرﺟﻲ اﻟﻤﻄﻠﻮب وﺗﻜﻮن ھﺬه اﻟﻄﺮﯾﻘﺔ إﻣﺎ ﻣﻦ ﺧﻼل أﻧﻈﻤﺔ ﻣﺸﺘﺮﻛﺔ ﻣﻊ أﻧﻈﻤﺔ اﻟﺘﻜﯿﯿﻒ وإﻣﺎ ﻣﻦ ﺧﻼل أﻧﻈﻤﺔ ﻣﺴﺘﻘﻠﺔ ﻛﻤﺎ ﯾﻠﻲ: Eng Khalid ALTaslaq 27
4- CYCLING AIR WITH FILTRATION, EXTRACTION AND INTRODUCING AIR -1ﻧﻈﺎم ﺗﻜﯿﯿﻒ ﻏﯿﺮ ﻣﺮﻛﺰي ﻣﺴﺘﻘﻞ ﻣﻊ ﻧﻈﺎم ﺗﮭﻮﯾﺔ ﻣﺮﻛﺰي ﻣﺴﺘﻘﻞ وﻗﺪ ﯾﻜﻮن ﻧﻈﺎم اﻟﺘﮭﻮﯾﺔ ﻣﺒﺮد أو ﻏﯿﺮ ﻣﺒﺮد ﻓﻲ ﺣﺎل ﻛﺎﻧﺖ ﻧﺴﺒﺘﮫ أﻗﻞ أو ﺗﺴﺎوي %20ﻣﻦ ﻣﺠﻤﻮع اﻟﮭﻮاء اﻟﻜﻠﻲ. -2ﻧﻈﺎم ﺗﻜﯿﯿﻒ ﻣﺮﻛﺰي ﻣﺴﺘﻘﻞ ﻣﻊ ﻧﻈﺎم ﺗﮭﻮﯾﺔ ﻣﺮﻛﺰي ﻣﺴﺘﻘﻞ وﯾﺠﺐ أن ﯾﻜﻮن ﻧﻈﺎم اﻟﺘﮭﻮﯾﺔ ﻣﺒﺮد وﻣﻌﺎﻟﺞ ﻏﺎﻟﺒﺎ. -3ﻧﻈﺎم ﺗﻜﯿﯿﻒ وﺗﮭﻮﯾﺔ ﻣﺸﺘﺮك وﻣﺮﻛﺰي. Eng Khalid ALTaslaq 28
ﻧﻈﺎم ﺗﻜﯿﯿﻒ ﻏﯿﺮ ﻣﺮﻛﺰي ﻣﺴﺘﻘﻞ ﻣﻊ ﻧﻈﺎم ﺗﮭﻮﯾﺔ ﻣﺮﻛﺰي ﻣﺴﺘﻘﻞ ﯾﺴﺘﺨﺪم ھﺬا اﻟﺸﻜﻞ ﻋﻨﺪﻣﺎ ﺗﻜﻮن ﻋﺪد اﻟﻤﻨﺎطﻖ اﻟﻤﺮاد ﺗﮭﻮﯾﺘﮭﺎ ﻛﺜﯿﺮة ﻋﻨﺪﻣﺎ ﺗﻜﻮن ﻋﻤﻠﯿﺔ اﻟﺘﺤﻜﻢ اﻟﻤﺴﺘﻘﻞ ﻟﻜﻞ ﺣﯿﺰ ﻣﻄﻠﻮﺑﺔ ﻛﻤﺎ ﯾﻤﺘﺎز ھﺬا اﻟﻨﻈﺎم ﺑﺄن ﻧﺴﺐ اﻟﺘﮭﻮﯾﺔ ﻓﯿﮫ ﺗﻜﻮن ﻣﺘﺠﺎﻧﺴﺔ ﻟﻜﻞ ﺣﯿﺰ Eng Khalid ALTaslaq 29
ﻧﻈﺎم ﺗﻜﯿﯿﻒ ﻣﺮﻛﺰي ﻣﺴﺘﻘﻞ ﻣﻊ ﻧﻈﺎم ﺗﮭﻮﯾﺔ ﻣﺮﻛﺰي ﻣﺴﺘﻘﻞ ﯾﺴﺘﺨﺪم ھﺬا اﻟﺸﻜﻞ ﻋﻨﺪﻣﺎ ﺗﻜﻮن اﻷﺣﻤﺎل اﻟﺤﺮارﯾﺔ ﻋﺎﻟﯿﺔ و ﺟﻮدة اﻟﮭﻮاء اﻟﻤﻄﻠﻮﺑﺔ ﻋﺎﻟﯿﺔ ﻧﻈﺮا ﻹﻣﻜﺎﻧﯿﺔ ﺗﺮﻛﯿﺐ اﻟﻔﻼﺗﺮ وﻟﻜﻦ ﻋﻤﻠﯿﺔ اﻟﺘﺤﻜﻢ ﻟﻜﻞ ﺣﯿﺰ ﺗﻌﺘﺒﺮ أﺻﻌﺐ ﻧﺴﺒﯿﺎ ﻣﻦ اﻟﻨﻈﺎم اﻟﺴﺎﺑﻖ وﯾﻤﺘﺎز ﺑﺄن ﻧﺴﺐ اﻟﺘﮭﻮﯾﺔ ﻓﯿﮫ ﺗﻜﻮن ﻣﺘﺠﺎﻧﺴﺔ ﻟﻜﻞ ﺣﯿﺰ Eng Khalid ALTaslaq 30
ﻧﻈﺎم ﺗﻜﯿﯿﻒ وﺗﮭﻮﯾﺔ ﻣﺸﺘﺮك و ﻣﺮﻛﺰي ﯾﺴﺘﺨﺪم ھﺬا اﻟﺸﻜﻞ ﻋﻨﺪﻣﺎ ﺗﻜﻮن اﻷﺣﻤﺎل اﻟﺤﺮارﯾﺔ ﻋﺎﻟﯿﺔ وﻛﻤﯿﺎت اﻟﺘﮭﻮﯾﺔ ﻋﺎﻟﯿﺔ وﺟﻮدة اﻟﮭﻮاء اﻟﻤﻄﻠﻮﺑﺔ ﻋﺎﻟﯿﺔ وﻟﻜﻦ ﻋﻤﻠﯿﺔ اﻟﺘﺤﻜﻢ ﻟﻜﻞ ﺣﯿﺰ ﺗﻌﺘﺒﺮ ﺻﻌﺒﺔ وﻛﺬﻟﻚ ﻓﺈن ﻧﺴﺐ اﻟﺘﮭﻮﯾﺔ ﺗﻜﻮن ﻏﯿﺮ ﻣﺘﺠﺎﻧﺴﺔ ﻟﻜﻞ ﺣﯿﺰ. Eng Khalid ALTaslaq 31
Eng Khalid ALTaslaq 32
ﻣﻔﮭﻮم اﻟﺘﮭﻮﯾﺔ ﻏﯿﺮ اﻟﻤﺘﺠﺎﻧﺴﺔ Eng Khalid ALTaslaq 33
و52.2 إن اﻟﻤﻌﯿﺎر اﻟﻤﺴﺘﺨﺪم ﻓﻲ أﺷﺮي ﻓﻲ ھﺬا اﻟﻤﺠﺎل ھﻮ اﻟﻤﻌﯿﺎر ﺣﯿﺚ ﯾﻌﺘﻤﺪ اﻟﻤﻌﯿﺎر اﻷول وھﻮ اﻷﻛﺜﺮ اﺳﺘﺨﺪاﻣﺎ ﻋﻠﻰ طﺮﯾﻘﺔ ﺗﺴﻤﻰ52.1 Minimum Efficiency Reporting Value (MERV) MERV, is a measurement scale designed in 1987 by (ASHRAE) to report the effectiveness of air filters. The scale \"represents a quantum leap in the precision and accuracy of air-cleaner ratings and allows for improved health, reduced cost and energy efficiency in HVAC design Eng Khalid ALTaslaq 34
Eng Khalid ALTaslaq 35
Eng Khalid ALTaslaq 36
وﯾﻤﻜﻦ أﯾﻀﺎ اﺧﺘﯿﺎر اﻟﻔﻠﺘﺮ اﻟﻤﻨﺎﺳﺐ ﻣﻦ ﺧﻼل اﻟﻌﻮدة إﻟﻰ ASHRAE APPLICATIONوﯾﻮﺿﺢ اﻟﺠﺪول اﻟﺘﺎﻟﻲ ﻣﺜﻼ اﺧﺘﯿﺎر اﻟﻔﻼﺗﺮ ﻟﻠﺘﻄﺒﯿﻘﺎت اﻟﺘﻌﻠﯿﻤﯿﺔ Eng Khalid ALTaslaq 37
Eng Khalid ALTaslaq 38
و ﯾﺠﺪر ﺑﺎﻟﺬﻛﺮ أن ھﻨﺎك ﻓﻼﺗﺮ ﺗﻜﻤﯿﻠﯿﺔ أﺧﺮى ﻣﺜﻞ UV AND IONIZERﺗﻮﺿﻊ ﺑﺸﻜﻞ ﺗﻜﻤﯿﻠﻲ Eng Khalid ALTaslaq 39
ﻋﻨﺪ اﺣﺘﺴﺎب ﻗﯿﻢ اﻟﺘﮭﻮﯾﺔ ﻓﺈن اﻟﻤﻘﺼﻮد ﺑﮭﺬه اﻟﻘﯿﻢ ھﻮ -1اﻟﮭﻮاء اﻟﻨﻘﻲ )(EXHUAST AIR -2اﻟﮭﻮاء اﻟﻌﺎدم )(EXHUAST AIR -3اﻟﮭﻮاء اﻟﻤﺪور )(CYCLING AIR Eng Khalid ALTaslaq 40
إن ﻗﯿﻢ اﻟﺘﮭﻮﯾﺔ ﺗﺤﺘﺴﺐ ﻋﻠﻰ أﺳﺎس ﺗﺪﻓﻖ ﻣﺴﺘﻤﺮ ) (FLOW RATE –L/S OR M3/HR....ETCوان اﺣﺘﺴﺎب ھﺬه اﻟﻘﯿﻢ ﯾﺘﻄﻠﺐ رﺑﻄﮭﺎ ﺑﻤﺤﺪدات ذات ﻋﻼﻗﺔ ﻣﻦ داﺧﻞ اﻟﺤﯿﺰ اﻟﻤﺮاد ﺗﮭﻮﯾﺘﮫ ﻓﺈن ﻛﺎن ھﻨﺎك اﻋﺘﺒﺎرات ﻟﻠﻄﺎﻗﺔ ﻓﯿﺠﺐ أن ﺗﻜﻮن ھﺬه اﻟﻤﺤﺪدات دﻗﯿﻘﺔ ﻣﺜﻞ ﻋﺪد اﻷﺷﺨﺎص واﻟﻤﺴﺎﺣﺔ وأﻣﺎ إن ﻟﻢ ﺗﻜﻦ ھﻨﺎك اﻋﺘﺒﺎرات ﻟﻠﻄﺎﻗﺔ ﻛﺄن ﯾﻜﻮن ﻧﻈﺎم ﺗﮭﻮﯾﺔ ﻣﻦ ﻏﯿﺮ ﺗﻜﯿﯿﻒ أو وﺟﺪت اﻋﺘﺒﺎرات ﺻﺤﯿﺔ ﻓﺘﻜﻮن اﻟﻤﺤﺪدات ﻣﻘﺎﺳﮫ ﺑﺎﻟﺤﺠﻢ اﻟﻜﻠﻲ ﻟﻠﺤﯿﺰ واﻟﺬي ﺗﻨﺘﺞ ﻋﻨﮫ ﻗﯿﻢ ﺗﮭﻮﯾﺔ ﻋﺎﻟﯿﺔ وھﻮ ﻣﺎ ﯾﻌﺮف ﺑﺎل )(AIR CHANGE PER HOUR - ACH Eng Khalid ALTaslaq 41
AIR CHANGE PER HOUR - ACH AIR CHANGE – AC = SPACE VOLUME(M3) AIR CHANGE PER HOUR – ACH = SPACE VOLUME(M3)/HR FOR EXAMPLE IF WE HAVE A SPACE WITH 75M3 VOLUME (5M*5M*3M) AND WE NEED 3 ACH FOR THIS SPACE THEN THE REQUIRED FLOW RATE = 3*75 = 225M3/HR IF WE REDUCED THE REQUIRED TIME LIKE HALF HOUR THEN THE FLOW RATE WILL BE INCREASE TO 450M3/HR WICH WILL INCREASE THE FAN SIZE SO THE TIME UNIT WICH USED FOR AIR CHANGE IS ONE HOUR AND IT IS ENOUGH. Eng Khalid ALTaslaq 42
ﻋﻨﺪ اﺣﺘﺴﺎب ﻗﯿﻢ اﻟﺘﮭﻮﯾﺔ ﺑﻄﺮﯾﻘﺔ ﻋﺪد ﻣﺮات ﺗﻐﯿﯿﺮ اﻟﮭﻮاء ) (ACHﻓﺈن أﺑﺮز اﻟﻤﺮاﺟﻊ اﻟﻤﺴﺘﺨﺪﻣﺔ ھﻲ ASHRAE HANDBOOK APPLICATION ﺣﯿﺚ ﯾﺘﻢ اﻟﺮﺟﻮع ﻟﻜﻞ ﺗﻄﺒﯿﻖ ﻋﻠﻰ ﺣﺪه إﻻ اﻟﻤﺴﺘﺸﻔﯿﺎت ﻓﯿﺘﻢ ﺗﺤﺼﯿﻞ اﻟﻘﯿﻤﺔ ﻣﻦ اﻟﻤﻌﯿﺎر Standard 170, Ventilation of Health Care Facilities Eng Khalid ALTaslaq 43
أﻣﺜﻠﺔ ﻋﻠﻰ اﻟﻄﺮﯾﻘﺔ اﻷوﻟﻰ: Eng Khalid ALTaslaq 44
أﻣﺜﻠﺔ ﻋﻠﻰ اﻟﻄﺮﯾﻘﺔ اﻷوﻟﻰ: Eng Khalid ALTaslaq 45
إن أﺑﺮز اﻟﻤﻌﺎﯾﯿﺮ اﻟﻤﺴﺘﺨﺪﻣﺔ ﻓﻲ ھﺬا اﻟﻤﺠﺎل ھﻮ اﻟﻤﻌﯿﺎر ASHRAE Standard 62.1 Ventilation for Acceptable Indoor Air Quality Eng Khalid ALTaslaq 46
Eng Khalid ALTaslaq 47
The calculations procedure will be based on these sections from the standard • Ventilation rate procedure (6.2) – Single-zone systems • Indoor air quality procedure (6.3) • Exhaust ventilation (6.5) 48 Eng Khalid ALTaslaq
6.2.2.1 Breathing Zone Outdoor Airflow. The outdoor airflow at the breathing zone (Vbz) shall be: Vbz = RpPz + RaAz (6-1) where: Rp = OA rate per person Pz = zone population Ra = OA rate per unit area Az = zone floor area Rp, Pz and Ra are obtained from Table 6.1 49 Eng Khalid ALTaslaq
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