Te Mārama ki ngā Rerekētanga i waenga i ngā Momo Pouaka Whakamātao mō ngā Pouaka Whakamātao

He mea nui ngā taputapu whakamatao hou mō te tiaki kai, engari he rerekē rawa ngā whakamahinga o ngā whakamatao pēnei i te R134a, R290, R404a, R600a, me te R507. E whakamahia whānuitia ana te R290 i roto i ngā kāpata inu whakamatao, ko te R143a ia e whakamahia whānuitia ana i roto i ngā kāpata pia iti. Ko te R600a he mea whakarite mō ngā taputapu whakamatao motuhake.

Ko ngā pouaka whakamātao te toto ora o ngā pūnaha pouaka whakamātao, e āhei ai ngā pouaka whakamātao ki te mimiti i te wera me te pupuri i te pāmahana o roto kia mātao. Heoi, kāore i te ōrite te hanganga o ngā pouaka whakamātao katoa—he rerekē rawa te hanganga matū, te pānga ki te taiao, ngā āhua haumaru, me te mahi. Mō ngā kaihoko, ngā tohunga hangarau, me ngā tohunga ahumahi i Ūropi me Amerika Te Raki, he mea nui te mārama ki ēnei rerekētanga, inā koa i waenganui i ngā ture kaha ki te whakaiti i ngā tukunga hau kati kōtuhi me te tiaki i te paparanga ozone.

Ngā Paearu Aromatawai Matua mō ngā Pouaka Whakamatao

I mua i te ruku ki ngā momo takitahi, he mea nui kia tautuhia ngā inenga e tino hira ana mō ngā tono pouaka whakamātao. E mōhiotia whānuitia ana ēnei paearu i roto i te umanga HVAC/R (Whakamahana, Hau, Āhuarangi, Pouaka Whakamātao) ā, e whakatau ana i ngā whakataunga ture puta noa i te ao:

• ODP (Pūmanawa Whakaiti Ozone): He ine i te nui o te kino o te paparanga ozone i roto i tētahi matū. Ko te paearu ko te R11 (he hauhautanga kua aukatia inaianei), me te ODP o te 1. Ko te whakatauranga o te 0 ko te tikanga kāore he pānga kino o te hauhautanga ki te whakaiti i te ozone.
• GWP (Pūmanawa Mahana Ao): He ine i te takoha a tētahi matū ki te huringa āhuarangi i roto i te 100 tau, ki te whakataurite ki te hauhā waro (CO₂, GWP = 1). Ko ngā uara GWP iti ake ka whakaritea kia rite ki ngā ture pēnei i te Ture Hau-F a te EU me te SNAP a te US EPA (Kaupapa Here Tauhokohoko Hou Hiranga).
• Whakarōpūtanga Haumaru ASHRAE: He paerewa (ASHRAE 34-2022) e whakatau ana i ngā pouaka whakamatao mā te mura (Akomanga 1: kore-mura; Akomanga 2L: paku mura; Akomanga 2: mura; Akomanga 3: tino mura) me te paitini (Akomanga A: iti te paitini; Akomanga B: nui te paitini). Ko te nuinga o ngā pouaka whakamatao pouaka whakamātao ka taka ki te Akomanga A.
• Te Mahi Whakamahana: Kei roto ko te whai huatanga o te whakamatao (COP, te Tauwehenga Mahi rānei, ko te teitei ake = he pai ake), te pēhanga whakahaere (me ōrite ki te hoahoa pūwero o te pouaka whakamātao), me te awhe pāmahana (e tika ana mō ngā pouaka whakamātao pāmahana-waenga, ngā pouaka tio pāmahana-iti rānei).
• Hototahi: Ka mahi tahi me ngā hinu whakahinuhinu o te pouaka whakamātao (hei tauira, te hinu kohuke, te hinu POE) me ngā rauemi (hei tauira, ngā hiri, ngā ngongo) hei karo i ngā kino o te pūnaha.

Tātaritanga Whakamahana Takitahi

He motuhake te kaha me ngā ngoikoretanga o ia hauhautanga, ā, he pai mō ngā whakamahinga motuhake—mai i ngā pouaka whakamātao o te whare ki ngā pouaka tio arumoni. Kei raro nei he whakamārama taipitopito mō ia momo.

1. R134a (Tetrafluoroethane)

Momo Matū: Warowaihā Parakore (HFC)

Ngā Whakatakotoranga Matua:

• ODP: 0 (haumaru ki te ozone)
• GWP: 1,430 (e ai ki te Pūrongo Aromatawai Tuaono a te IPCC, pae tawhiti 100-tau)
• Akomanga Haumaru ASHRAE: A1 (kore e mura, iti te paitini)
• Pēhanga Whakahaere: Waenga (ki te whakataurite ki ētahi atu pouaka whakamātao)
• Hototahi: Ka mahi tahi me ngā hinu whakahinuhinu POE (polyol ester) me te PAG (polyalkylene glycol).

Mahi me ngā Whakamahinga:

I puta mai te R134a i ngā tau 1990 hei whakakapi mō te R12 (he CFC he nui te ODP, kua rāhuitia inaianei i raro i te Montreal Protocol). I noho hei mea nui i roto i ngā pouaka whakamātao o te whare, ngā pouaka whakamātao inu iti, me ngā pouaka whakamātao kawe nā te mea kāore e mura, ā, he ngāwari hoki te whakauru ki ngā pūnaha o nāianei. He taurite te pai o te whakamatao (COP)—he rawaka mō ngā pāmahana pouaka whakamātao paerewa (2–8°C mō te wāhanga hou, -18°C mō ngā pouaka tio) engari he iti iho i ngā pouaka whakamātao taiao pērā i te R600a.

Tūnga Ture me te Taiao:

Ahakoa he haumaru te R134a mō te ozone, nā te nui o te GWP kua ara ake ngā here i Ūropi me Amerika Te Raki. I raro i te Ture Hau-F a te EU (EC Nama 517/2014), kua whakaitihia te whakamahinga o te R134a i roto i ngā taputapu pouaka whakamātao hou mai i te tau 2020, me te whakamahere kia whakaitihia anō. He mea noa tonu i roto i ngā pouaka whakamātao tawhito engari kei te whakakapia e ngā momo GWP iti i roto i ngā tauira hou.

Ngā Wero: Ka whakawhāitihia te kaha o te GWP teitei ki te whakamahi mō te wā roa; he iti ake te whai huatanga i ngā pouaka whakamatao taiao.

2. R600a (Isobutane)

Momo Matū: Warowaihā parakore (HC, he "hau whakamatao taiao" i ahu mai i te hinu/hau)

Ngā Whakatakotoranga Matua:

• ODP: 0 (haumaru ki te ozone)
• GWP: 3 (pānga āhuarangi iti noa iho—tētahi o ngā mea iti rawa e wātea ana)
• Akomanga Haumaru ASHRAE: A3 (tino mura, iti te paitini)
• Pēhanga Whakahaere: Iti (me whakamahi ngā pūwero i hangaia mō ngā pūnaha pēhanga iti)
• Hototahi: Ka mahi tahi me te hinu kohuke, me ngā hinu whakahinuhinu alkylbenzene (AB) rānei (ehara i te POE/PAG).

Mahi me ngā Whakamahinga:

Ko te R600a te mea matua i roto i ngā pouaka whakamātao o ngā whare hou i Ūropi me Amerika Te Raki. Nā tōna kaha whakamatao teitei (COP 5–10% teitei ake i te R134a) ka whakaiti i te whakapaunga pūngao, e hangai ana ki ngā paerewa EU Energy Label me US ENERGY STAR®. Nā tōna GWP iti ka tino tutuki i ngā ture tukunga tino pakari.

Ngā Whakaaro mō te Haumaru me te Tāutanga:

Ko te mura te wero matua o te R600a. Hei whakaiti i te mōrearea, ka whakawhāitihia e ngā kaihanga te rahi o tana utu i roto i ngā pouaka whakamātao (te nuinga o te wā ≤150 karamu) ā, ka whakamahia ngā wāhanga ātete-pahū (hei tauira, ngā pūwero hiri, ngā wāhanga hiko kāore e mura). Me whai whakangungu motuhake ngā tohunga hangarau ki te whakahaere i ngā turuturu, nā te mea he mura te kohu R600a kukū.

Ngā Wero: Me aro ki te hoahoa me te whakahaere kia haumaru te āhua o te mura; kāore e hototahi ki ngā hinu POE/PAG.

3. R290 (Pōpana)

Momo Matū: Warowaihā parakore (HC, hauhautanga taiao)

Ngā Whakatakotoranga Matua:

• ODP: 0 (haumaru ki te ozone)
• GWP: 3 (pērā i te R600a, he tino iti te pānga ki te āhuarangi)
• Akomanga Haumaru ASHRAE: A3 (tino mura, iti te paitini—he paku mura ake i te R600a, he iti ake te kaha mura)
• Pēhanga Whakahaere: Waenga-iti (teitei ake i te R600a, iti iho i te R134a)
• Hototahi: Ka mahi tahi me te hinu kohuke, me ngā hinu whakahinuhinu AB rānei.

Mahi me ngā Whakamahinga:

He tino pai te whai huatanga o te whakamatao o te R290—he 10–15% teitei ake tōna COP i te R134a, ā, he mea tino pai mō te whakamatao e penapena ana i te kaha. E whakamahia ana i roto i ngā pouaka whakamātao iti ki te rahi o te whare, ngā pouaka whakamātao iti, me ētahi pouaka whakamātao whakaaturanga arumoni (he iti noa ngā rahi utu). I ngā rohe pēnei i te EU, kei te piki haere te whakamahinga hei whakakapi tika mō te R134a i roto i ngā tauira hou.

Tūnga Haumaru me te Ture:

Pērā i te R600a, me whai tikanga haumaru tino pakari te mura o te R290: ngā herenga utu (≤150 karamu mō ngā pouaka whakamātao o te whare), ngā pūnaha kimi turuturu, me ngā rauemi kore-mura i roto i te pouaka whakamātao. E tino tutuki ana i ngā whakaritenga o te EU F-Gas Regulation me te US EPA SNAP, kāore he mahere whakaiti i te pāmahana nā te iti o te GWP.

Ngā Wero: He mura ake i te R600a; me whakamātautau haumaru pakari ake i te wā e hanga ana.

4. R404a (Whakaranu o R125, R134a, R143a)

Momo Matū: Ranunga HFC tata-azeotropic (he maha ngā HFC i konatunatua hei whakatauira i ngā āhuatanga o te hauhautanga kotahi)

Ngā Whakatakotoranga Matua:

• ODP: 0 (haumaru ki te ozone)
• GWP: 3,922 (tino teitei—tētahi o ngā hauhautanga tino pāngia e te āhuarangi)
• Akomanga Haumaru ASHRAE: A1 (kore e mura, iti te paitini)
• Pēhanga Whakahaere: Teitei (kua arotauhia mō ngā pūnaha pāmahana-iti)
• Hototahi: Ka mahi tahi me ngā hinu whakahinuhinu POE.

Mahi me ngā Whakamahinga:

I mua ko te R404a te paerewa koura mō te pouaka whakamātao arumoni, tae atu ki ngā pouaka tio haere-roto, ngā pouaka whakaatu hūpermakete, me ngā pouaka whakamātao ahumahi e mahi ana i te -20°C ki te -40°C. Nā te kaha whakamatao teitei me te pumau i ngā pāmahana iti i tino pai ai mō ēnei mahi.

Tūnga Ture me te Taiao:

Nā te GWP tino teitei o R404a i tata mutu katoa ai te whakamahinga i Ūropi me Amerika Te Raki. I raro i te Ture Hau-F a te EU, i aukatia tōna whakamahinga i roto i ngā taputapu hou i te tau 2020, ā, he tino herea te kawemai/kawemai. I te US, kua whakarārangihia e te EPA a R404a hei "matū GWP-teitei" ā, me whakakapi ki ētahi atu mea rerekē he iti te GWP (hei tauira, R452A, R513A) i roto i ngā pūnaha hou. Kei te noho tonu i roto i ngā pouaka whakamātao arumoni tawhito engari kei te whakakorea haeretia mā te whakahou.

Ngā Wero: He iti rawa te GWP; he iti te whai huatanga o te pūngao ki te whakataurite ki ngā huarahi hou; he nui te pānga ki te huringa āhuarangi.

5. R507 (Whakaranu o te R125 me te R143a)

Momo Matū: Ranunga HFC Azeotropic (ngā ranunga e kohuatia/whakapūmau ana i te pāmahana kotahi, pērā i te hauhautanga parakore)

Ngā Whakatakotoranga Matua:

• ODP: 0 (haumaru ki te ozone)
• GWP: 3,985 (tata rite ki te R404a, tino teitei)
• Akomanga Haumaru ASHRAE: A1 (kore e mura, iti te paitini)
• Pēhanga Whakahaere: Teitei (he paku teitei ake i te R404a)
• Hototahi: Ka mahi tahi me ngā hinu whakahinuhinu POE.

Mahi me ngā Whakamahinga:

He whanaunga tata a R507 nō R404a, i hangaia mō te whakamatao arumoni i te pāmahana iti (hei tauira, ngā pouaka tio hohonu, ngā pouaka whakaatu kai tio) e hiahiatia ana te whakamatao tonu i te -30°C ki te -50°C. Ko te tikanga o tōna āhua azeotropic kāore e wehewehea hei wāhanga i te wā e turuturu ana, e māmā ake ai te tiaki—he painga tēnei i ngā ranunga tata-azeotropic pērā i a R404a.

Tūnga Ture me te Taiao:

Pērā i a R404a, kua arahina te GWP teitei o R507 ki ngā ture tino pakari. I aukatia te whakamahinga o te EU F-Gas i roto i ngā taputapu hou i te tau 2020, ā, kua tohua e te US EPA hei "mea e āwangawanga ana" i raro i te SNAP. Kei te whakakapia e ngā mea rerekē iti-GWP pērā i te R448A (GWP = 1,387) me te R449A (GWP = 1,397) i roto i ngā tono arumoni.

Ngā Wero: Tino teitei te GWP; kāore he oranga roa i raro i ngā ture tukunga ā-ao; he iti noa ki ngā pūnaha tawhito.

He rerekē ngā ia o ngā utu mō ngā hauhautanga rerekē. Koinei te tūtohi ia o Hune 2025:

Tirohanga Whānui mō ngā Pouaka Whakamatao

Kei te ripanga i raro nei ngā rerekētanga matua i waenga i ngā hauhautanga e rima, e whakaatu ana i tō rātou pai mō ngā whakamahinga motuhake:

Ngā Auahatanga Ture me ngā Huringa Ahumahi

E rua ngā whāinga matua e ārahihia ana te mākete hauhautanga o te ao: te whakakore i ngā matū e whakangaro ana i te ozone (e tutuki ana mō te nuinga o ngā hauhautanga) me te whakaiti i ngā tukunga hau kati kōtuhi (te arotahi o nāianei). I Ūropi me Amerika Te Raki, kei te tere ake te nekehanga ki ngā kōwhiringa iti-GWP e ngā ture:

• Te Ture Hau-F a te EU: E whakahau ana kia whakaitihia te whakamahinga HFC mā te 79% i te tau 2030 (ki te whakaritea ki ngā taumata o te tau 2015) ā, e aukatia ana hoki ngā hauhautanga GWP teitei (GWP > 2,500) i roto i ngā taputapu hauhautanga hou.
• US EPA SNAP: E whakarārangi ana i ngā hauhautanga iti-GWP (hei tauira, R600a, R290, R452A) hei "whakaaetia" mō te nuinga o ngā tono, ā, e ārai ana i ngā kōwhiringa GWP teitei (hei tauira, R404a, R507) i roto i ngā pūnaha hou.

Mō ngā kaihoko, ko te tikanga tēnei:

• Ko te nuinga o ngā pouaka whakamātao hou o te whare ka whakamahi i te R600a, i te R290 rānei (nā te iti o te GWP me te tino whai hua).
• Ka huri te pouaka whakamātao arumoni ki ngā ranunga hauhautanga iti-GWP (hei tauira, R448A, R454C) me ngā hauhautanga taiao pēnei i te CO₂ (R744) mō ngā pūnaha nunui.
• Ko ngā pouaka whakamātao tawhito e whakamahi ana i te R134a, R404a, R507 rānei, me whakakore tika, me whakahou rānei kia tutuki ai ngā ture.

Ko te whiriwhiri i te hauhautanga tika mō te pouaka whakamātao e whakawhirinaki ana ki te whakataurite i ngā āhuatanga e whā: te pānga ki te taiao (ODP/GWP), te haumaru (te mura/te paitini), te mahi (te whai hua/te pēhanga), me te tutuki i ngā ture. Mō te nuinga o ngā tono hou:

• Ko te R600a me te R290 ngā kōwhiringa pai rawa atu mō ngā pouaka whakamātao o te whare, he tino iti te GWP me te tino whai hua (me ngā mahi haumaru hei ārai i te mura).
• Kua tawhito te R404a me te R507 mō ngā pūnaha hou, ā, ka taea anake te whakamahi i ngā taputapu arumoni tawhito tae noa ki te wā e whakahoutia ana, e whakakapia rānei.
• He kōwhiringa whakawhiti te R134a, e āta tangohia haeretia ana, e whakamahia ana ngā whakamatao taiao.

I te whakakaha haere o ngā ture me te whanaketanga o te hangarau, ka aro tonu te umanga ki ngā whakamatao taiao me ngā ranunga iti-GWP—kia mōhio ai kei te whai hua, kei te pumau hoki ngā pūnaha whakamatao mō te wā roa. Mō ngā tohunga hangarau me ngā kaihoko, ko te noho mōhio ki ēnei rerekētanga te mea nui ki te whakatau kaupapa tika, whai ture hoki.

Ngā Puna: ASHRAE Handbook—Refrigeration (2021), IPCC Sixth Assessment Report (2022), EU F-Gas Regulation (EC No 517/2014), US EPA SNAP Program (2023).