Iko kukwira kwekushisa indekisi yakakosha yekuita indekisi yemota.Kana tembiricha yekukwira kuita isiri yakanaka, hupenyu hwesevhisi uye kuvimbika kwekushanda kwemota kuchaderedzwa zvakanyanya.Zvinhu zvinokanganisa kukwira kwekushisa kwemota, mukuwedzera pakusarudzwa kwemagadzirirwo emota pachayo, zvinhu zvakawanda mukugadzira zvinokonzeresa kukwira kwekushisa kwemota kusazadzisa zvinodiwa zvekushanda kwakachengeteka kwemota.

Kuti uedze kukwira kwekushisa kwemota, zvinodikanwa kuita iyo thermal kugadzikana tembiricha yekukwira bvunzo yemota, uye hazvigoneke kuwana dambudziko rekukwira kwekushisa kwemota neyakapusa fekitori bvunzo.Huwandu hukuru hweiyo chaiyo yekudziya yakagadzikana tembiricha yekukwira bvunzo dzemotor dzinoratidza kuti: kusarudzwa kwakashata kwemafeni uye zvisina kufanira zvinopisa zvinokonzeresa zvinokonzeresa kukwira kwekushisa, asi dambudziko rekukwira kwekushisa kunokonzerwa nekunyura zvinhu rinowanzo kusangana, uye iyo yakajairwa kugadzirisa. ndeye kunyudza zvakare Paint kamwe.

Kuti uvandudze hunyanzvi hwekugadzira, mazhinji emamota madiki uye epakati-kati haana base yekunyudza pendi.Pamusoro pekunyura uye kuomesa mhando yekuzviputira pachayo, kusimba kwesimbi musimboti uye furemu zvakare inobata zvakananga kupisa kwekupedzisira kwemota.Nechepfungwa, iyo yekubatanidza pamusoro pechigadziko chemuchina uye musimboti wesimbi unofanirwa kunyatsoenderana, asi nekuda kwekushandurwa kwechigadziko chemuchina uye musimboti wesimbi, nezvimwewo, gaka remhepo richaonekwa pakati penzvimbo mbiri dzekubatana, izvo zvisiri. inokodzera mota.Thermal insulation yekupisa kupisa.Kushandiswa kwependi yekunyura nefuremu haingozadzisi mhepo pakati penzvimbo dzekubatanidza, asi zvakare inodzivirira zvinogona kukuvadza mhepo inoputika panguva yekugadzira nekuda kwekuchengetedzwa kwecasing.Iyo yekusimudza control ine imwe yekuvandudza maitiro.

Heat conduction inodaidzwa kuti heat conduction.Maitiro ekupisa kupisa pakati pezvinhu zviviri zvakasangana uye nekupisa kwakasiyana, kana pakati pezvikamu zvakasiyana zvetembiricha zvechinhu chimwe chete pasina hukama macroscopic displacement, inonzi heat conduction.Hunhu hwechinhu kuita kupisa hunonzi thermal conductivity yechinhu.Kutamisa kupisa mune zvakakora uye mumvura ichiri kudziya ndeyekupisa kwemafuta chete.Iyo thermally conductive chikamu chinobatanidzwa mukupisa kwekushisa mumvura inofamba.

Thermal conduction inoenderana nekupisa kwekufamba kwemaerekitironi, maatomu, mamorekuru uye lattices mumidziyo yekutamisa kupisa.Zvisinei, zvinhu zvezvinhu zvakasiyana-siyana, maitiro makuru ekupisa kwekushisa akasiyana, uye migumisiro yakasiyanawo.Kazhinji kutaura, kupisa kwesimbi kwesimbi kwakakura kupfuura kweasina simbi, uye kupisa kwemagetsi kwesimbi yakachena kwakakura kudarika yealloys.Pakati pematunhu matatu enyaya, iyo yekupisa yekupisa kweiyo solid state ndiyo yakakura, inoteverwa neyemvura mamiriro uye idiki mugasi.

Thermal insulation kana thermal insulation materials inowanzoshandiswa mukuvaka, kupisa simba, cryogenic teknolojia.Zvizhinji zvadzo zvinhu zvine porous, uye mhepo ine urombo hwekupisa conductivity inochengetwa mumapores, saka vanogona kuita basa rekudzivirira kupisa uye kuchengetedza kupisa.Uye iwo ese ari discontinuities, uye kupisa kwekushisa kune zvese kupisa conduction yeiyo yakasimba skeleton nemhepo, pamwe nemhepo convection uye kunyange nemwaranzi.Muinjiniya, thermal conductivity inoshandurwa neiyi composite heat transfer inonzi apparent thermal conductivity.Inoratidzika thermal conductivity haingogadziriswi nekuumbwa kwezvinhu, kudzvanywa uye tembiricha, asiwo nekuwanda kwezvinhu uye hunyoro hwemukati.Iyo yakaderera density, iyo yakawanda madiki voids muzvinhu uye yakaderera inooneka thermal conductivity.Nekudaro, kana density iri diki kune imwe nhanho, zvinoreva kuti voids yemukati yakawedzera kana yakabatanidzwa kune mumwe nemumwe, zvichikonzera mukati memhepo convection, kupisa kupisa kuwedzeredza, uye inooneka thermal conductivity kuwedzera.Kune rimwe divi, ma pores ari mu thermal insulation material ari nyore kutora mvura, uye kubuda uye kutama kwemvura pasi pechiito che tembiricha gradient kunowedzera zvakanyanya kuoneka kwekushisa conductivity.