Ake sibone ukuthi yini ingcindezi elinganisiwe

Ekuphileni ngokuvamile sibhekene nezimo lapho kunendingeko ukukala ingcindezi: igazi, umfutho womoya noma emoyeni onomfutho noma igesi tube. Ake sibone ukuthi yini uhlobo nobungako bomzimba. Futhi ngokushesha kuphakama umbuzo: Yini ingcindezi kukalwa? It kuvela ukuthi kukhona izinhlobo eziningana amayunithi zisetshenziswa le ubukhulu bomzimba. Kulesi sihloko, sizohlola lokho ingcindezi elinganisiwe. Ngakho, ake sicabangele ngasinye sazo amayunithi.

Ngokomthetho International SI iyunithi uhlelo kuyinto ingcindezi yokulinganisa Pascal (Pa) etholakala kulo - kilopascals (KPA) kanye megapascals (MPA). Omunye Pascal iyona maqondana ezilandelayo: 1 Pa = 1 N / m ^2. Nokho, emikhakheni eyehlukene zisebenzisa ezahlukene amayunithi ingcindezi. Ngokwesibonelo, ekunqumeni ukusebenza kanye negesi ukugeleza komoya onomfutho (compressor ubuciko) ingasetshenziswa amayunithi eziningana ezahlukene ngokuphelele.

Ake sihlaziye lokho kukalwa ingcindezi igesi futhi emoyeni. Iyunithi main sisetshenziswa imitha cubic ngomzuzu kwesikhathi (m ³ / iminithi) ngayinye. Kuyinto ngokuvamile kungenzeka ukuhlangabezana namayunithi ezifana amalitha ngomzuzu (l / iminithi) noma umfutho womoya (atm) ngalinye, futhi emazweni abakhuluma isiNgisi angasebenzisa cubic ngomzuzu - cubic unyawo perminute, noma CFM. Ake sibheke ukuhlobana okukhona phakathi kwalaba eziguquguqukayo. 1 l / imiz oluhambisana 0,001 m ³ / iminithi elingu-1 CFM kulingana 28,3168 L / imiz, noma 0,02832 m ³ / imiz. Ngakho, 1 m ³ / imiz ilingana 35.314 CFM. Isikhathi esining impela kuholele ukusebenza ukuncela noma izimo ezivamile (1 atm ezingeni lokushisa 200 Celsius). Kulokhu, ngaphambi iyunithi ubeke incwadi "n" okusho isimo evamile. Ngokwesibonelo, 10 Num ³ / imiz.

Futhi ngoba ingcindezi wokulinganisa singasetshenziswa amayunithi ezifana: mm HG. Art. (Torr) - milimitha mercury; atm. - emkhathini ngokomzimba; al. - emkhathini lobuchwepheshe; ibha. Ngo -English amazwe abakhuluma angasebenzisa value ezifana esingamakhilogremu ngamunye intshi sikwele - PSI (amakhilogremu angu-intshi sikwele) .

Cabanga isilinganiso main ingcindezi amayunithi: 1 megapascal 10 ibha noma 7500,7 milimmetrov HG noma 9,8692 eziphindwe ngokomzimba, 10,197 eziphindwe lobuchwepheshe kanye 145,04 PSI.

Ngakho siqonda ukuthi wegazi ulinganiswa ezindaweni ezahlukene ubuchwepheshe. Futhi lokho kumadivayisi enziwe ukukala lucobo?

Lezi izindlela ihlukaniswa by uhlobo ingcindezi kukalwa (isib, umfutho womoya, ngokweqile noma kwaphela, okungukuthi, cleaner), futhi-ke, isimiso isinyathelo (ewuketshezi, ulwelwesi, ugesi, entwasahlobo kuhlanganisiwe). Amapharamitha main agcwele idivayisi sokulinganisa umfutho womoya - a ekilasini lokunemba. Kukhona izindlela eziningi ezinjalo. Lapha idivayisi eziyisisekelo zazo njalo kunazo asetshenziswe nesilinganiso umfutho womoya:

• aneroid ukhonza sokulinganisa umfutho womoya;
• barotermogigrometr futhi asetshenziswa ukukala ingcindezi komoya;
• manometers Liquid - asetshenziselwa umehluko ingcindezi nokukala;
• analog Izikali digital.

Kufinyeta, sithi ulwazi ingcindezi amayunithi kungase kube usizo kunoma yimuphi umuntu yesimanje.