Expansion Valve

‫ﺭﺍﻫﻜﺎﺭﻫﺎﻳﻲ ﺑﺮﺍﻱ ﺗﻌﻮﻳﺾ ﺷﻴﺮﻫﺎﻱ ﺍﻧﺒﺴﺎﻁ ﺣﺮﺍﺭﺗﻲ‬ ‫ﺩﺭ ﻫﻨﮕﺎﻣﻲ ﻛﻪ ﻻﺯﻡ ﺍﺳﺖ ﺷﻴﺮ ﻫﺎﻱ ﺍﻧﺒﺴﺎﻁ ﺣﺮﺍﺭﺗﻲ ﺭﺍ ﺗﻌﻮﻳﺾ ﻧﻤﺎﺋﻴﻢ‪،‬ﺳﺎﺩﻩ ﺗﺮﻳﻦ ﺭﻭﺵ ﺁﻥ ﺍﺳﺖ ﻛﻪ‬ ‫ﺁﻥ ﺭﺍﺑﺎ ﻧﻤﻮﻧﻪ ﺍﻱ ﻛﺎﻣﻼ ﻣﺸﺎﺑﻪ ﺟﺎﻳﮕﺰﻳﻦ ﻛﻨﻴﻢ‪.‬ﺩﺭ ﻫﺮ ﺻﻮﺭﺕ ﺍﺣﺘﻤﺎﻝ ﺁﻥ ﻭﺟﻮﺩ ﺩﺍﺭﺩ ﻛﻪ ﻧﻤﻮﻧﻪ ﺍﺻﻠﻲ‬ ‫ﺷﻴﺮ ﺩﺭ ﺩﺳﺘﺮﺱ ﻧﺒﺎﺷﺪ ﻭ ﻣﺠﺒﻮﺭ ﺷﻮﻳﻢ ﺑﻪ ﺟﺎﻱ ﺁﻥ ﺍﺯ ﺷﻴﺮ ﺩﻳﮕﺮﻱ ﺍﺳﺘﻔﺎﺩﻩ ﻛﻨﻴﻢ‪.‬‬ ‫ﺑﻪ ﻣﻨﻈﻮﺭ ﻛﺴﺐ ﺍﻃﻤﻴﻨﺎﻥ ﺍﺯ ﻋﻤﻠﻜﺮﺩ ﺻﺤﻴﺢ ﺳﻴﺴﺘﻢ‪،‬ﺍﻧﺘﺨﺎﺏ ﺷﻴﺮﻱ ﻛﻪ ﻇﺮﻓﻴﺖ ﻣﻮﺭﺩ ﻧﻴﺎﺯ‪،‬ﻧﻮﻉ‬ ‫ﺑﺪﻧﻪ‪،‬ﻧﻮﻉ ﻣﺘﻌﺎﺩﻝ ﺳﺎﺯﻱ ﻭ ﻣﺸﺨﺼﺎﺕ ﻛﺎﺭ ﻛﺮﺩ ﺁﻥ ﺑﺎ ﻧﻤﻮﻧﻪ ﺍﺻﻠﻲ ﻫﻤﺨﻮﺍﻧﻲ ﺩﺍﺷﺘﻪ ﺑﺎﺷﺪ ﻛﺎﻣﻼ ﺿﺮﻭﺭﻱ‬ ‫ﺍﺳﺖ‪.‬ﺍﻧﺘﺨﺎﺏ ﻳﻚ ﺷﻴﺮ ﺍﻧﺒﺴﺎﻃﻲ ﺣﺮﺍﺭﺗﻲ ﺑﺎ ﻇﺮﻓﻴﺘﻲ ﻣﺸﺎﺑﻪ ﻣﺴﺘﻠﺰﻡ ﺁﻥ ﺍﺳﺖ ﻛﻪ ﺗﻜﻨﺴﻴﻦ ﻣﺮﺑﻮﻃﻪ ﺑﻪ‬ ‫ﺟﺪﺍﻭﻝ ﺍﻧﺘﺨﺎﺏ ﺷﻴﺮ ﺁﻻﺕ ﺷﺮﻛﺖ ﺳﺎﺯﻧﺪﻩ ﻣﺮﺍﺟﻌﻪ ﻛﻨﺪ‪.‬ﻫﺮ ﺗﻜﻨﺴﻴﻦ ﺑﻪ ﻣﻨﻈﻮﺭ ﺗﻌﻴﻴﻦ ﻇﺮﻓﻴﺖ ﺻﺤﻴﺢ‬ ‫ﺷﻴﺮ ﺍﻧﺒﺴﺎﻃﻲ ﺣﺮﺍﺭﺗﻲ ﺟﺎﻳﮕﺰﻳﻦ ﺑﺎﻳﺴﺘﻲ ﺍﺯ ﻣﻮﺍﺭﺩ ﺯﻳﺮ ﺁﮔﺎﻫﻲ ﺩﺍﺷﺘﻪ ﺑﺎﺷﺪ‪:‬‬ ‫‪ .1‬ﻇﺮﻓﻴﺖ ﺣﺮﺍﺭﺗﻲ ﺳﻴﺴﺘﻢ ﺑﺮ ﺣﺴﺐ ‪.BTU‬‬ ‫‪ .2‬ﻧﻮﻉ ﻣﺒﺮ ﺍﺳﺘﻔﺎﺩﻩ ﺷﺪﻩ ﺩﺭ ﺳﻴﺴﺘﻢ‪.‬‬ ‫‪ .3‬ﺩﻣﺎﻱ ﻣﺒﺮﺩ ﻣﺎﻳﻊ ﻭﺭﻭﺩﻱ ﺑﻪ ﺷﻴﺮ ﻭ ﺩﻣﺎﻱ ﺍﻭﺍﭘﺮﺍﺗﻮﺭ‪.‬‬ ‫ﺍﻛﺜﺮ ﺟﺪﺍﻭﻝ ﺍﻧﺘﺨﺎﺏ ﺷﻴﺮ ﺁﻻﺕ ﻇﺮﻓﻴﺖ ﺷﻴﺮ ﻫﺎ ﺭﺍ ﺑﺮ ﺍﺳﺎﺱ ﺗﻦ ﺗﺒﺮﻳﺪ ﺩﺭ ﺷﺮﺍﻳﻂ ﻣﺨﺘﻠﻒ‬ ‫ﺳﻴﺴﺘﻢ ﻓﻬﺮﺳﺖ ﻣﻲ ﻛﻨﻨﺪ‪.‬ﻫﺮ ﺗﻜﻨﺴﻴﻦ ﺩﺭ ﻫﻨﮕﺎﻡ ﺗﻌﻴﻴﻦ ﺍﻓﺖ ﻓﺸﺎﺭ‪،‬ﺷﻴﺮ ﻭ ﺩﻣﺎﻱ ﻣﺎﻳﻊ‬ ‫ﻭﺭﻭﺩﻱ‪،‬ﺑﺎﻳﺴﺘﻲ ﻣﻘﺎﺩﻳﺮ ﻫﺮ ﻳﻚ ﭘﺎﺭﺍﻣﺘﺮ ﻫﺎﻱ ﻳﺎﺩ ﺷﺪﻩ ﺩﺭ ﺑﺪﺗﺮﻳﻦ ﺷﺮﺍﻳﻂ ﻣﻤﻜﻦ ﺭﺍ ﻣﻮﺭﺩ‬ ‫ﺍﺳﺘﻔﺎﺩﻩ ﻗﺮﺍﺭ ﺩﻫﺪ‪.‬‬ ‫ﺩﺭ ﻣﺮﺣﻠﻪ ﺑﻌﺪ ﻻﺯﻡ ﺍﺳﺖ ﺗﺎ ﺗﻜﻨﺴﻴﻦ ﻧﻮﻉ ﺑﺪﻧﻪ ﺷﻴﺮ ﺟﺪﻳﺪ ﺭﺍ ﺑﺎ ﻧﻤﻮﻧﻪ ﺍﺻﻠﻲ ﻣﻘﺎﺳﻪ ﻧﻤﻮﺩﻩ ﻭ‬ ‫ﺍﻃﻤﻴﻨﺎﻥ ﺣﺎﺻﻞ ﻛﻨﺪ ﻛﻪ ﺍﻧﺪﺍﺯﻩ ﺍﺗﺼﺎﻻﺕ ﻭﺭﻭﺩﻱ ﻭ ﺧﺮﻭﺟﻲ ﻭ ﺷﻜﻞ ﺷﻴﺮ ﺑﺎ ﻧﻮﻣﻨﻪ ﺍﺻﻠﻲ‬ ‫ﻣﻄﺎﺑﻘﺖ ﺩﺍﺭﺩ ﻭ ﺩﺭ ﻫﻨﮕﺎﻡ ﻧﺼﺐ ﻣﺸﻜﻞ ﺑﻪ ﺧﺼﻮﺻﻲ ﺑﻪ ﻭﺟﻮﺩ ﻧﺨﻮﺍﻫﺪ ﺁﻣﺪ‪.‬‬ ‫ﻋﻼﻭﻩ ﺑﺮ ﻣﻮﺍﺭﺩ ﻳﺎﺩ ﺷﺪﻩ‪،‬ﻧﻮﻉ ﻣﺘﻌﺎﺩﻝ ﻛﺮﺩﻥ ﺷﻴﺮ ﻧﻴﺰ ﺑﺎﻳﺴﺘﻲ ﺑﺎ ﻧﻤﻮﻧﻪ ﺍﺻﻠﻲ ﺗﻄﺎﺑﻖ ﺩﺍﺷﺘﻪ‬ ‫ﺑﺎﺷﺪ‪،‬ﺷﻴﺮﻱ ﻛﻪ ﺑﺎ ﺁﻥ ﺟﺎﻳﮕﺰﻳﻦ ﻣﻲ ﺷﻮﺩ ﻧﻴﺰ ﺑﺎﻳﺴﺘﻲ ﺍﺯ ﺩﺍﺧﻞ ﻣﺘﻌﺎﺩﻝ ﺷﺪﻩ ﺑﺎﺷﺪ‪،‬ﺷﻴﺮﻱ ﻛﻪ ﺑﺎ‬

‫ﺁﻥ ﺟﺎﻳﮕﺰﻳﻦ ﻣﻲ ﺷﻮﺩ ﻧﻴﺰ ﺑﺎﻳﺴﺘﻲ ﺍﺯ ﺩﺍﺧﻞ ﻣﺘﻌﺎﺩﻝ ﺷﺪﻩ ﺑﺎﺷﺪ‪ .‬ﺑﻪ ﻫﻤﻴﻦ ﺗﺮﺗﻴﺐ ﺩﺭ ﺻﻮﺭﺗﻲ‬ ‫ﻛﻪ ﺷﻴﺮ ﺍﺻﻠﻲ ﺑﻪ ﻛﺎﺭ ﺭﻓﺘﻪ ﺍﺯ ﺧﺎﺭﺝ ﻣﺘﻌﺎﺩﻝ ﺷﺪﻩ ﺑﺎﺷﺪ‪،‬ﺷﻴﺮﻱ ﻛﻪ ﺟﺎﻳﮕﺰﻳﻦ ﻣﻲ ﺷﻮﺩ ﻧﻴﺰ ﺑﺎﻳﺪ‬ ‫ﺍﺯ ﺧﺎﺭﺝ ﻣﺘﻌﺎﺩﻝ ﺷﺪﻩ ﺑﺎﺷﺪ‪.‬‬ ‫ﺩﺭ ﭘﺎﻳﺎﻥ ﺗﻜﻨﻴﺴﻴﻦ ﻣﺮﺑﻮﻃﻪ ﺑﺎﻳﺪ ﺍﻃﻤﻴﻨﺎﻥ ﺣﺎﺻﻞ ﻧﻤﺎﻳﺪ ﻛﻪ ﺍﺟﺰﺍﻱ ﺗﻮﺍﻧﻲ ﺷﻴﺮ ﺟﺎﻳﮕﺰﻳﻦ ﻫﻢ ﺑﺎ‬ ‫ﺷﻴﺮ ﺍﺻﻠﻲ ﻣﻄﺎﺑﻖ ﺑﺎﺷﺪ‪.‬ﭼﻨﺪﻳﻦ ﻧﻤﻮﻧﻪ ﺍﺯ ﺍﺟﺰﺍﻱ ﺗﻮﺍﻧﻲ ﻣﻮﺟﻮﺩ ﻫﺴﺘﻨﺪ ﻛﻪ ﺗﻜﻨﺴﻴﻦ ﻗﺎﺩﺭ ﺍﺳﺖ‬ ‫ﺍﺯ ﺑﻴﻦ ﺁﻧﻬﺎ ﺍﻧﺘﺨﺎﺏ ﻛﻨﺪ‪.‬ﺍﻧﺘﺨﺎﺏ ﺩﺭﺳﺖ ﺩﺭ ﺍﻳﻦ ﻣﺮﺣﻠﻪ ﻣﺴﺘﻠﺰﻡ ﺩﺍﺷﺘﻦ ﺍﻃﻼﻋﺎﺕ ﻛﺎﻓﻲ ﺩﺭ‬ ‫ﺯﻣﻴﻨﻪ ﺗﻔﺎﻭﺕ ﻣﻴﺎﻥ ﺑﺎﺭ ﻫﺎﻱ ﻣﺨﺘﻠﻒ ﻭ ﭼﮕﻮﻧﮕﻲ ﺗﺎﺛﻴﺮ ﮔﺬﺍﺭﻱ ﺁﻧﻬﺎ ﺑﺮ ﻋﻤﻠﻜﺮﺩ ﺳﻴﺴﺘﻢ ﺍﺳﺖ‪ .‬ﺑﻪ‬ ‫ﻃﻮﺭ ﻣﻌﻤﻮﻝ ﺑﺎ ﻣﺮﺍﺟﻌﻪ ﺑﻪ ﺩﻓﺘﺮﭼﻪ ﺭﺍﻫﻨﻤﺎﻱ ﺳﺎﺯﻧﺪﻩ ﻣﻲ ﺗﻮﺍﻥ ﺍﻃﻼﻋﺎﺕ ﻣﻔﺼﻞ ﺗﺮﻱ ﺩﺭ ﺭﺍﺑﻄﻪ‬ ‫ﺑﺎ ﺍﻧﻮﺍﻉ ﻣﺨﺘﻠﻒ ﺑﺎﺭﻫﺎ ﺑﺪﺳﺖ ﺁﻭﺭﺩ‪.‬‬ ‫ﻫﺮ ﺗﻜﻨﻴﺴﻴﻦ ﭘﺲ ﺍﺯ ﺍﻧﺘﺨﺎﺏ ﺷﻴﺮ ﺍﻧﺒﺴﺎﻃﻲ ﺣﺮﺍﺭﺗﻲ ﻣﻨﺎﺳﺐ‪،‬ﺑﺎﻳﺴﺘﻲ ﺍﻗﺪﺍﻡ ﺑﻪ ﻧﺼﺐ ﺁﻥ ﺩﺭ‬ ‫ﺩﺍﺧﻞ ﺳﻴﺴﺘﻢ ﻧﻤﺎﻳﺪ‪.‬ﺩﺭ ﺻﻮﺭﺗﻲ ﻛﻪ ﺷﻴﺮ ﺗﻮﺳﻂ ﺑﺮﻧﺞ ﺑﻪ ﺳﻴﺴﺘﻢ ﺟﻮﺵ ﺩﺍﺩﻩ ﺷﺪﻩ ﺑﺎﺷﺪ ﺑﻬﺘﺮ‬ ‫ﺍﺳﺖ ﻛﻪ ﺑﺪﻧﻪ ﺷﻴﺮ ﺭﺍ ﺑﻪ ﻭﺳﻴﻠﻪ ﻳﻚ ﭘﺎﺭﭼﻪ ﻣﺮﻃﻮﺏ ﺑﭙﻴﭽﺎﻧﻴﺪ ﻭ ﺁﻥ ﺭﺍ ﺩﺭ ﻣﻌﺮﺽ ﺣﺮﺍﺭﺕ ﻗﺮﺍﺭ‬ ‫ﻧﺪﻫﻴﻢ‪.‬ﻫﻨﮕﺎﻡ ﻣﺤﻜﻢ ﻛﺮﺩﻥ ﺣﺒﺎﺏ ﺣﺴﺎﺱ ﺑﻪ ﺧﻂ ﻣﻜﺶ ﻫﻤﻮﺍﺭﻩ ﺑﺎﻳﺴﺘﻲ ﺗﻮﺻﻴﻪ ﻫﺎﻱ ﺳﺎﺯﻧﺪﻩ‬ ‫ﺩﺭ ﺯﻣﻴﻨﻪ ﻣﺤﻞ ﻣﻨﺎﺳﺐ ﻧﺼﺐ ﻣﻮﺭﺩ ﺍﺳﺘﻔﺎﺩﻩ ﻗﺮﺍﺭ ﮔﻴﺮﺩ‪.‬ﺩﺭ ﻫﺮ ﺻﻮﺭﺕ ﺑﻪ ﻋﻨﻮﺍﻥ ﻳﻚ ﻗﺎﻋﺪﻩ‬ ‫ﻛﻠﻲ ﺑﺎﻳﺪ ﺑﻪ ﺧﺎﻃﺮ ﺩﺍﺷﺘﻪ ﺑﺎﺷﻴﻢ ﻛﻪ ﺣﺒﺎﺏ ﺣﺴﺎﺱ ﺑﺎﻳﺪ ﺑﻪ ﻣﻘﻄﻊ ﺍﻓﻘﻲ ﻟﻮﻟﻪ ﺩﺭ ﺍﻭﺍﭘﺮﺍﺗﻮﺭ‬ ‫ﻣﺘﺼﻞ ﮔﺮﺩﺩ‪.‬ﺩﺭ ﻣﻮﺍﻗﻌﻲ ﻛﻪ ﺍﻧﺪﺍﺯﻩ ﻟﻮﻟﻪ " ‪ 8/7‬ﺍﻳﻨﭻ ﻭ ﻳﺎ ﺑﺰﺭﮔﺘﺮ ﺍﺯ ﺁﻥ ﺍﺳﺖ‪،‬ﺗﻮﺻﻴﻪ ﻣﻲ ﺷﻮﺩ ﻛﻪ‬ ‫ﺣﺒﺎﺏ ﺩﺭ ﻣﻮﻗﻌﻴﺖ ﺳﺎﻋﺖ ‪ 4‬ﻳﺎ ‪ 8‬ﻋﻘﺮﺑﻪ ﻫﺎﻱ ﺳﺎﻋﺖ ﻗﺮﺍﺭ ﺩﺍﺩﻩ ﺷﻮﺩ‪،‬ﻗﺮﺍﺭ ﺩﺍﺩﻥ ﺣﺒﺎﺏ ﺩﺭ ﻫﺮ‬ ‫ﺳﻄﺢ ﻣﻘﻄﻌﻲ ﺍﺯ ﻟﻮﻟﻪ ﺑﻪ ﺍﺳﺘﺜﻨﺎﻱ ﺑﺨﺶ ﺯﻳﺮﻳﻦ ﺁﻥ ﻗﺎﺑﻞ ﻗﺒﻮﻝ ﺧﻮﺍﻫﺪ ﺑﻮﺩ‪.‬ﺩﺭ ﻫﻨﮕﺎﻡ ﻣﺤﻜﻢ‬ ‫ﻧﻤﻮﺩﻥ ﺣﺒﺎﺏ ﺑﻪ ﻟﻮﻟﻪ ﺑﺎﻳﺴﺘﻲ ﺍﻃﻤﻴﻨﺎﻥ ﺣﺎﺻﻞ ﻧﻤﻮﺩ ﻛﻪ ﺗﻤﺎﺱ ﺣﺮﺍﺭﺗﻲ ﺧﻮﺑﻲ ﻭﺟﻮﺩ ﺩﺍﺭﺩ‪،‬‬ ‫ﺑﺪﻳﻦ ﻣﻨﻈﻮﺭ ﺍﺯ ﺩﻭ ﺗﺴﻤﻪ ﺑﺮﺍﻱ ﻣﺤﻜﻢ ﻛﺮﺩﻥ ﺣﺒﺎﺏ ﺑﻪ ﻟﻮﻟﻪ ﺍﺳﺘﻔﺎﺩﻩ ﻣﻲ ﺷﻮﺩ‪.‬‬ ‫ﻧﻜﺘﻪ ﺍﻱ ﻛﻪ ﺑﺎﻳﺪ ﺑﺪﺍﻥ ﺗﻮﺟﻪ ﻛﻨﻴﺪ ﺍﻳﻦ ﺍﺳﺖ ﻛﻪ ﻫﺮ ﮔﺎﻩ ﺷﻴﺮﻱ ﺭﺍ ﺑﺮﺍﻱ ﺍﻭﻟﻴﻦ ﺑﺎﺭ ﻧﺼﺐ ﻣﻲ‬ ‫ﻛﻨﻴﺪ‪ ،‬ﺗﻨﻈﻴﻢ ﻫﺎﻱ ﻓﻮﻕ ﮔﺮﻣﺎﻱ ﺁﻥ ﺭﺍ ﻧﻴﺰ ﻛﻨﺘﺮﻝ ﻛﻨﻴﺪ‪.‬ﺩﺭ ﺍﻳﻦ ﻣﻮﺍﺭﺩ ﺑﻪ ﺗﻨﻈﻴﻢ ﻫﺎﻱ ﺳﺎﺯﻧﺪﻩ‬

‫ﺷﻴﺮ ﺍﻛﺘﻔﺎ ﻧﻜﻨﻴﺪ ﻭ ﻫﻤﻮﺍﺭﻩ ﺗﻨﻈﻴﻤﺎﺕ ﻣﻮﺭﺩ ﻧﻴﺎﺯ ﺭﺍ ﺍﻧﺠﺎﻡ ﺩﺍﺩﻩ ﻭ ﻛﻨﺘﺮﻝ ﻧﻤﺎﻳﻴﺪ‪.‬ﻧﻜﺘﻪ ﺩﻳﮕﺮ‬ ‫ﺍﻳﻨﻜﻪ‪،‬ﭘﻴﺶ ﺍﺯ ﺍﻋﻤﺎﻝ ﻫﺮ ﻳﻚ ﺍﺯ ﺗﻨﻈﻴﻢ ﻫﺎ ﻭ ﻳﺎ ﺍﻧﺪﺍﺯﻩ ﮔﻴﺮﻱ ﻛﻤﻴﺖ ﻛﺎﺭﻛﺮﺩ ﺳﻴﺴﺘﻢ‪ 15 ،‬ﺩﻗﻴﻘﻪ‬ ‫ﺻﺒﺮ ﻛﻨﻴﺪ ﺗﺎ ﺷﻴﺮ ﺑﻪ ﺣﺎﻟﺖ ﺗﺜﺒﻴﺖ ﺷﺪﻩ ﺑﺮﺳﺪ‪.‬‬ ‫ﺑﺮ ﮔﺮﻓﺘﻪ ﺍﺯ ﻣﺠﻠﻪ ﺍﺭﻭﻧﺪ ‪21‬‬