Lub tub yees chav tsev yog ib qho kev sib xyaw ua ke uas muaj cov tub yees thiab cov khoom siv cua txias (cua sov), nrog rau chav ua tub yees, ntau yam khoom siv thiab cov khoom siv, cov cuab yeej tswj, cov khoom siv cua txias, thiab cov txheej txheem kaw.
Lub tub yees chav tsev yog lub tshuab tshuab ua kom tiav cov khoom cua txias los ntawm compression, condensation, expansion, thiab evaporation txheej txheem. Nws suav nrog chav tsev tub yees thiab cov chaw txias txias, nrog rau kev sib koom ua ke ntawm ntau yam kev qhuab qhia xws li kev tsim vaj tsev, kev tsim, dej thiab dej ntws, thiab hluav taws xob engineering. Nws daim ntawv thov npog tag nrho cov sectors ntawm lub teb chaws kev khwv nyiaj txiag, nrog rau cov zaub mov tub yees, cua txias, ua liaj ua teb preservation, coj mus muag txias saw, thiab industrial txias. Jacob Perkins tau tsim lub tshuab vapor compression tub yees hauv xyoo 1834, thiab Willis Carrier tsim cov cua txias niaj hnub hauv xyoo 1902, tsav kev tsim cov txheej txheem thev naus laus zis. Raws li daim ntawv thov scenarios, nws tuaj yeem muab faib ua peb pawg: thaj chaw, kev lag luam, thiab kev lag luam, suav nrog hom xws li chaw cia txias thiab cua txias.
Hauv xyoo 2022, Tuam Tshoj cov khoom siv tub yees ua lag luam tau nce mus txog 531.38 billion yuan, thaum kev xa tawm poob xyoo - ntawm - xyoo rau 94.727 billion yuan. Cov tub yees, ua cov kua dej ua haujlwm tseem ceeb, tau dhau plaub tiam ntawm kev rov ua dua. Nyob rau hauv 2025, HFCs yuav raug rau lub quota system, tsav kev lag luam mus rau upgrade rau HFOs. Hais txog kev ua haujlwm thev naus laus zis, ib pab pawg los ntawm Hong Kong University of Science thiab Technology tau ua tiav lub ntiaj teb thawj sub-zero caij nplooj ntoos hlav-loaded tub yees chav tsev muaj peev xwm ncav cuag qhov kub thiab txias li -12℃. Cov thev naus laus zis no siv cov cua sov latent ntawm theem hloov pauv hauv cov duab nco alloys rau tub yees, ua tiav "zero-emission" ntsuab tub yees. Nyob rau hauv cov nqe lus ntawm kev txuag hluav taws xob technologies, modularization thiab ntse tswj tau dhau los ua cov lus qhia tseem ceeb. Nyob rau theem txoj cai, "Green and Efficient Refrigeration Action Plan" xav kom 30% kev txhim kho hauv kev lag luam hluav taws xob los ntawm 2022.
