Ko nga kaiwhakawhiti wera he waahanga nui o nga punaha whakangao whakaora hiko hei whakapai ake i te kaha me te whakaiti i te kohi hiko. Ko nga whakawhitinga wera whakawhiti me te whakawhiti wera ko te mea tino noa o nga momo e rua. He torutoru nga waahi ohorere i waenganui i enei e rua, ma te whakamahi i te 3D High-Efficiency Counterflow Heat Recovery Gearcore Heat Exchanger, me te Plate Fin Type Crossflow Heat Exchanger hei tauira:
Kaupapa Kaupapa: Counterflow vs. Crossflow
Kaihuri Wea Rerenga:

Whakawhiti wera Rerenga:

Mahinga me te Putanga
Kaihuri Wea Rerenga:

Kaihuri Wea Rerenga:

Te akuaku me te tātari
Kaihuri Wea Rerenga:

Whakawhiti wera Rerenga:

Nga tono
Whakarāpopototanga o nga Rerekētanga
| Āhuahira | Heat Exchanger Rerenga | Heat Exchanger Whakawhitiwhiti |
| Aronga Rererangi | Anga anga (rererere) | Aronga Tirohanga (whakawhitiwhiti) |
| Te Whakaora Whakaora | Tae atu ki te 95% | Tae atu ki te 85% |
| Pungao Pungao | Teitei ake, pai rawa atu mo nga tono penapena hiko | He ngawari, he pai ake te utu |
| Te makuku me te parapara | He pai ake te makuku me te whakahaere parahanga | He pai, engari he iti ake te pai atu i te rerenga-a-whakaaro |
| Nga tono | Noho, arumoni marama, tino pai | Ahumahi, nga punaha rererangi nui |
| Mahinga akuaku | Te koriri me te koriri, te aukati huakita | Te huakita me te aukati i te pokepokea ai |
