1. Zazzabi: Zazzabi shine gwargwadon yadda yake da zafi ko sanyi.
Akwai rukunin zazzabi uku da ake amfani da su (ma'aunin zazzabi): Celsius, Fahrenheit, da kuma cikakkiyar zazzabi.
Zazzabi na Celsius (t, ℃): zazzabi muna amfani dashi sau da yawa. Za a auna zafin jiki tare da sanyin sanyin sanyi.
Fahrenheit (f, ℉): zazzabi da aka saba amfani dashi a ƙasashen Amurka da Amurka.
Canjin zazzabi:
F (° F) = 9/5 * t (° C) +32 (Nemo yawan zafin jiki a Fahrenheit daga cikin sananniyar zazzabi a Celsius)
t (f ((° f) -32] * 5/9 (Nemo zazzabi a Celsius daga sananniyar zazzabi a Fahrenheit)
Cikakkiyar sikelin sikelin (t, ºK): An yi amfani da kullun a lissafin abubuwan da aka tsara.
CIGABA DA KYAUTATA ZUCIYA DA KYAUTA CLSASISHECH:
T (ºK) = t (° C) +273 (Nemo cikakkiyar zazzabi daga yanayin sanyi a Celsius)
2. Matsin lamba (P): A cikin sanyaya, matsi ne karfi a tsaye akan yanki naúrar, wato, wanda yawanci ana auna tare da matsin lamba da matsi.
Rukunin gama gari sune:
MPa (megapascal);
KPA (KPA);
bar (mashaya);
KGF / CM2 (Square Squaresteter kilogram Soja);
atm (daidaitaccen matsin lamba);
mmhg (millimita na Mercury).
Tattaunawa dangantaka:
1mPa = 10bar = 1000kp = 7500.6 Mmhg = 10.197 KGF / CM2
1ATM = 760mmhg = 1.01326BAR = 0.101326PA
Gabaɗaya da aka yi amfani da shi a Injiniya:
1BAR = 0.1 NOM KGF / CM2 ≈ 1ATM = 760 mmhg
Wakilan matsin lamba da yawa:
Cikakkiyar matsi (PJ): A cikin akwati, matsin lamba akan bangon ciki na akwatin da motsi na kwayoyin. The matsa lamba a cikin teburin thermictory teburin ƙasa gaba ɗaya cikakken matsin lamba ne.
Garfa matsa lamba (PB): an auna matsin lamba tare da ma'aunin matsin lamba a cikin tsarin firiji. Guruwar matsi ita ce bambanci tsakanin matsin gas a cikin kwandon da matsakaicin matsakaiciyar. An yi imani gabaɗaya cewa ma'aunin matsin lamba da 1bar, ko 0.1mpa, shine cikakkiyar matsin lamba.
Digiri na gida (H): Lokacin da matsakaicin matsakaiciyar matsin lamba mara kyau ne, ɗauki ƙimarsa da cikakken bayani a cikin digiri na wuri.
3. Tablearshen ƙwayar ƙwayar ƙwayar fitarwa: Tableraramar Thermodynamic Properants: zazzabi mai sanyaya-tafiye-tafiye) da sauran sigogi na firiji) da sauran sigogi na firiji. Akwai rubutu daya-da-daya tsakanin zafin jiki da matsin lamba na firiji a cikin jihar cike da cikakken.
An yi imani gabaɗaya cewa firiji a cikin mai shayarwa, mai ɗaukar ruwa, maimaitawa-ruwa, da ƙarancin matsin lamba yana cikin yanayin cike da cikakkiyar ƙasa. Vapor (ruwa) a cikin jihar cike da iska mai cike da tururi (ruwa), da matsin lamba da matsi suna kiran zazzabi da matsin lamba.
A cikin tsarin sanyaya, don firiji, mai daidaitawa zafin jiki da matsi mai jurewa yana cikin rubutu ɗaya-da-ɗaya. A mafi girma zazzabi zafin jiki, mafi girma matsi.
The Evaporation na firiji a cikin mai lalacewa da sandar ciki a cikin yanayin da ya cika, don haka turanci zazzabi da matsanancin zafin jiki da matsin lamba kuma suna cikin rubutu daya zuwa daya. Ana iya samun dangantaka mai dacewa a cikin teburin ƙwayoyin sanyi na sanyaya.
4. Zazzabi na girke-girke da kuma teburin matsin lamba:
5. A karkashin wani matsin lamba, zazzabi na ruwa yana ƙasa da zazzabi mai daidaitawa a ƙarƙashin matsin lamba mai dacewa, wanda ake kira ruwa mai dacewa.
Darajar da yawan zafin jiki ya wuce zafin jiki ana kiransa tsotsa superheat. An buƙaci tsotse-tsotsi na masana'antu gaba ɗaya da za a sarrafa shi a cikin 5 zuwa 10 ° C.
Darajar ruwan zafin jiki ƙasa da matsakaiciyar yanayin zafin rana ana kiranta da digiri na subcoact. Liquid Subcooling gaba daya ya faru ne a kasan mai kula, a cikin tattalin arziki, da kuma intercooler. Ruwa mai ruwa a gaban bawul ɗin da aka yi amfani da shi yana da amfani don inganta ƙarfin sanyi.
6. Evaporation, tsotsa, shayar, matsi mai ƙarfi da zazzabi
Matsin lamba (zazzabi): matsin lamba (zazzabi) na firiji a cikin mai shaye shaye. Matsakaicin matsin lamba (zazzabi): matsin lamba (zazzabi) na firiji a cikin kofin.
Matsakaicin matsakaitan (zazzabi): matsin lamba (zazzabi) a farfajiyar komputa na damfara. Fitar da matsin lamba (zazzabi): matsin lamba (zazzabi) a tashar komputa ta juyawa.
7. Zaɓin zazzabi na yanayin zafi na zafi: yana nufin Bambancin zazzabi tsakanin ruwaye biyu a ɓangarorin canja wuri. Bambancin zazzabi shine karfin tuki don canja wurin zafi.
Misali, akwai bambancin zazzabi tsakanin ruwan firiji da sanyaya; Rerriganter da brine; kayan ado da iska. Saboda wanzuwar yanayin yanayin zafin yanayi mai zafi, zafin jiki na abin da za a sanyaya ya fi yawan zafin jiki; Zazzabi da zazzabi ya fi yawan zafin jiki na matsakaici na matsakaici na Contener.
8. Jecita: zafi yana nufin zafi na iska. Saurin zafi wani abu ne wanda yake shafar canja wuri mai zafi.
Akwai hanyoyi guda uku don bayyana gumi:
Cikakken zafi (z): taro na tururi mai ruwa a kowace mita na cubic.
Danshi abun ciki (d): Adadin tururi mai ruwa a cikin kilogram na bushewar iska (g).
Irin ɗan zafi (%): yana nuna babban matakin da ainihin yanayin zafi yake kusa da babban zafi mai cikakken zafi.
A wani zazzabi, wani adadin iska na iya riƙe wani adadin turɓaɓɓen ruwa. Idan an rage wannan iyaka, vapor mai wuce haddi ruwa zai yarda da hazo. Ana kiran wannan iyaka mai ƙarancin tururi mai ƙarancin zafi. A karkashin zafi cike da kai, akwai wani mai dacewa mai yawan zafi mai zafi, wanda ya canza tare da zafin jiki na iska.
A wani zazzabi, lokacin da iska zafi yake kaiwa tsananin zafin rai, ana kiranta iska mai cikakken ƙarfi, kuma ba zai iya karɓar ƙarin tururi na ruwa ba; Air da zai iya ci gaba da karɓar wani adadin tururin ruwa da aka kira iska mai sanyin gwiwa.
Tsakanin zafi shine rabo na cikakken zafi z na iska mai sanyin gwiwa zuwa ga iska mai zafi zob na iska mai cikakken iska. % = z / zb × 100%. Yi amfani da shi don nuna yadda yake rufe ainihin ainihin yanayin zafi shine ga babban zafi.
Lokacin Post: Mar-08-2022
