Ko te mīhini whakamomona raupapa D he momo taputapu whakamatao e tika ana mō ngā momo rokiroki makariri pēnei i te tio tere i ngā mea hou me ērā atu. E toru ngā momo e wātea ana: DL DD me DJ e pai ana mō ngā pāmahana makariri rerekē. He hanganga kiato, ā, ka taea te whakamahi pai i te wāhi putunga ka taea te whakamatao tere i ngā kai rokiroki me te whakapai ake i te hou o ngā kai rokiroki. He pai te momo DL mō te rokiroki mea hou tata ki te 0 nekehanga. He pai te momo DD mō te rūma whakamatao tata ki te -18 nekehanga. He pai te momo DJ mō te rūma tio tata ki te -25 nekehanga.

1. He hanganga whaitake te evaporator, he rite te āhua o te hukapapa, ā, he pai te whakawhiti wera;

2. He mea hanga te anga ki te maitai kounga teitei, he kirihou te mata i rehuhia, he ātete ki te waikura, he ataahua hoki;

3. He motuka pā kounga teitei te mea e huihui ana te mīhini whakapūngao, he iti te haruru, he nui te rōrahi hau, ā, he pumau te mahi;

4. Ka whakamahia e te mīhini whakapūkara he paipa parahi kowiri tira āhua-U kia ōrite te whakanoho ki roto i ngā tara, kia poto ai te wā whakarewa;

5. Ka taea te whakaputa i ngā rauemi anga kia rite ki te hiahia o te kiritaki;

6. Kua whakamatautauria ngā mīhini whakapūngao i raro i te pēhanga hau 2.5MPa, e whakapūmau ana i te kaha o te hau o ngā hua.