Thermal conductivity Coefficient impahla. I conductivity ezishisayo zokwakha: ithebula

Inqubo yokudlulisa amandla izingxenye ibavuthela zomzimba kuya ngaphansi evuthayo ngokuthi conductivity ezishisayo. I ezinombolo ukubaluleka le nqubo ibonisa ezishisayo conductivity impahla. Lo mqondo kubaluleke kakhulu ekwakheni futhi kulungiswe izakhiwo. A materials ekhethwe kahle ayisizi ukwakha microclimate evumayo egumbini bese ugcine ku amalahle esibalulekile.

Umqondo conductivity ezishisayo

conductivity ezishisayo - ka ezishisayo amandla exchange inqubo okuyinto eyenzeka ngenxa ukushayisana we izinhlayiya ezincane kunazo emzimbeni. Ngaphezu kwalokho, le nqubo akagcini, kuyofika isikhathi lokushisa zilingana. Kuthatha isikhathi esithile. Isikhathi more esichithwa exchange ukushisa, the ephansi conductivity ezishisayo.

Lesi sibalo wezwakalisa njengoba izinto Coefficient conductivity ezishisayo. Ithebula liqukethe amagugu elinganisiwe wempahla kakhulu. Ukubalwa senziwa ngokusho inani energy ezishisayo edabula elinikeziwe surface area impahla. I emikhulu ukubaluleka ibalwa, ngokushesha lo into uyonika konke ekushiseni kwalo. +

Izimo letitsintsa conductivity ezishisayo

Thermal conductivity Coefficient of indaba kuxhomeke ezicini eziningana:

• I kwabantu of material. Ngokwandisa ukuxhumana izinhlayiya inkomba impahla buyaqina. Ngakho, bayoba adlulisele lokushisa ngokushesha. Lokhu kusho ukuthi nge ukwanda kwabantu impahla kuthuthukisa ukudluliswa ukushisa.

• I porosity material. izinto ukungena nakwamanye amazwe kukhona heterogeneous e isakhiwo sabo. Ngaphakathi kuwo kukhona semali emoyeni. Lokhu kusho ukuthi le amangqamuzana nezinye izinhlayiya kuyoba nzima ukuhambisa ukushisa. Ngenxa yalokho, ezishisayo conductivity iyakhula.

• Umswakama sithinta conductivity ezishisayo. Wet impahla ebusweni lidlule ukushisa okwengeziwe. Kwezinye amatafula likhombisa ibalwa ngisho ukushisa conduction Coefficient kwezingxenye izimo ezintathu: ezomile, eliphakathi (evamile), ezimanzi.

Lapho ukhetha impahla for ukwahlukanisa kwezakhiwo eziningi, kubalulekile futhi acabangele izimo lapho kuyothiwa eziqhutshwa.

Umqondo conductivity ezishisayo practice

I conductivity ezishisayo is kunakwe at the stage of ukwakha okusezingeni nokuklama. Uma lokhu kunakwe ikhono izinto nilondoloze ukushisa. Ngenxa yokukhetha kwabo lesifanele abaqashile ngaphakathi esakhiweni uyohlale ukhululekile. Phakathi ukusebenza intando kakhulu londoloza imali ku bafudumale.

Kufutfumeta at esigabeni design iyona engcono, kodwa asilona ikhambi lazo kuphela. Akunzima zikhulisa isakhiwo kakade kuqedile ngokuqhuba izifundo imisebenzi ngaphakathi kanye nabangaphandle. Izinto zokuvala umoya Layer ukujiya kuzoncika izinto abakhethiwe. Ezinye zazo (isibonelo, ukhuni, Foam) ungalenza ingasetshenziswa ngaphandle isendlalelo ukwahlukanisa. Into esemqoka ukuthi ukushuba layo lidlula ngamasentimitha 50.

Ngokukhethekile kufanele kukhokhelwe ukwahlukanisa of ophahleni, iwindi futhi umnyango kuvuleka, phansi. Ngalezi izakhi ushiya ukushisa kakhulu. Ngokubukeka, lokhu kungenziwa esibonakala esithombeni ekuqaleni kwalesi sihloko.

izinto Bezakhiwe kanye nokusebenza

Ukuze ukwakhiwa usebenzisa izinto nge ongaphakeme conductivity ezishisayo. ethandwa kakhulu yilezi:

• Ukhonkolo. conductivity wayo ezishisayo luphakathi 1,29-1,52Vt / m * K. Inani ngqo kuncike ukuvumelana nosimende. Ngaleli zinga sithinta kwabantu indaba kokuqala, okuyinto 500-2500 kg / m ^3. impahla Active isetshenziswa njengoba isixazululo izisekelo, ngesimo amabhlogo - I-izindonga izisekelo.

• Kwagcizelela conductivity kabani ezishisayo kuyinto 1,68Vt / m * K. inhlanganiso Material ifinyelela 2400-2500 kg / m ^3.

• Izinkuni, kusukela asetshenziswa izinsuku Olden njengoba zokwakha. inhlanganiso Kwalo conductivity ezishisayo kuya zohlobo bakha 150-2100 kg / m ³ futhi 0,2-0,23Vt / m * K, ngokulandelana.

Enye zokwakha ethandwa - isitini. Kuye Ukwakheka ke has izici ezilandelayo:

• uJakobe (ezenziwe ngobumba): 0.1-0.4 W / m * K;

• Bobumba (esenziwe yokuwugazinga): 0,35-0,81 W / m * K;

• Silicate (isihlabathi nge kwalokho lime): 0,82-0,88 W / m * K.

Izinto sasakhiwe ngokhonkolo ne ukwengeza lokubolekwa ukungena nakwamanye amazwe

Coefficient conductivity ezishisayo we kusetshenziswa ukuvumela ukusetshenziswa yokugcina ukuze kwakhiwe emagalaji, emadlangaleni, izindlu ehlobo, okugeza izindlu nezinye izakhiwo. Kuleli qembu zihlanganisa:

• Foam. Isicilelwe kwalokho bashaye ama-ejenti, ngenxa kokuba elinesimo isakhiwo Pore nge kwabantu 500-1000 kg / m ^3. Ngakho ikhono ukudlulisa ukushisa kunqunywa 0,1-0,37Vt / m * K.

• Claydite, ogama ukusebenza kuncike hlobo yayo. block Solid abanalo voids futhi izimbobo. Njengoba imigodi ngaphakathi wenza amabhlogo ozwakala, okuyizinto kancane, eliqinile kuka samuntu kuqala. Endabeni yesibili, conductivity ezishisayo ingaphansi. Uma sicabangela lezi zibalo jikelele, kwabantu kuyinto keramsit 500-1800kg / M3. Inkomba salo e 0,14-0,65Vt / m * K ububanzi.

• ukhonkolo evundile, kwakheka ngaphakathi usayizi Pore ka 1-3 amamilimitha angu okuyinto. Lesi sakhiwo inquma kwabantu impahla (300-800kg / m ^3). Ngenxa yalesi isici sifinyelela 0.1-0.3 W / m * K.

Izinkomba of ezishisayo ukwahlukanisa izinto

I conductivity ezishisayo we ezishisayo ukwahlukanisa izinto, ethandwa kakhulu esikhathini sethu:

• Foam elinendawo kwabantu 15-50kg / m ^3, conductivity ezishisayo - 0,031-0,033Vt / m * K;

• polystyrene Foam, kwabantu okuyinto kuyafana ukuthi we impahla odlule. Kodwa ngesikhathi esifanayo ukudluliswa ukushisa Coefficient ivuliwe 0,029-0,036Vt / m * K ezingeni;

• ingilazi uboya. Elinesimo Coefficient elilingana 0,038-0,045Vt / m * K;

• rock uvolo nge inkomba 0,035-0,042Vt / m * K.

Ibhokisi isikolo

Ukuze kube lula, lo conductivity ezishisayo we indaba kuthathwe labalwa. It ngaphandle Coefficient kungaba ziboniswe nemingcele ezifana degree umswakama, ukuminyana nabanye. Izinto nge high conductivity ezishisayo kuhlangene izinkomba kuThebula ongaphakeme conductivity ezishisayo. Isampula leli thebula aboniswe ngezansi:

Ukusebenzisa conductivity ezishisayo we indaba kuzovumela ukwakha ukwakhiwa oyifunayo. Into eyinhloko ukukhetha umkhiqizo elihlangabezana nazo zonke izidingo ezidingekayo. Khona-ke isakhiwo ukuze uthole ukhululekile zokuphila; izohlala microclimate evumayo.

kukhethwe kahle ukwahlukanisa impahla kunciphisa ukushisa ukulahlekelwa, ngenxa okuyinto ngeke kudingeke 'ukufudumeza mgwaqo. " Ngenxa yalesi kwezindleko ezingokwezimali zokusetshenziswa Ukushisa kuzoncishiswa kakhulu. Lezi ukonga kuzovumela ngokushesha ukubuyela yonke imali yensimu ukuze sisetshenziselwe ukuthengwa libe yisivikelo ezishisayo.