Hoʻopili ʻia ka paipu insulation kanu pololei ʻia e ka hopena kemika o ka polyether polyol composite material kiʻekiʻe a me ka polymethyl polyphenyl polyisocyanate ma ke ʻano he kumu.Hoʻohana ʻia nā paipu hoʻoheheʻe wela i kanu ʻia no ka insulation thermal a me nā papahana insulation anuanu o nā paipu i loko a me waho, nā paipu hoʻomehana waena, nā paipu ea ea, kemika, lāʻau lapaʻau a me nā paipu ʻoihana ʻē aʻe.Nānā Mai ka hānau ʻana o nā mea hoʻohui polyurethane i nā makahiki 1930, ua hoʻomohala wikiwiki ʻia ka paipu insulation polyurethane foam ma ke ʻano he mea hoʻonaninani wela maikaʻi loa, a ua ʻoi aku ka laulā o kāna noi.Hoʻohana nui ʻia ia i nā pipeline like ʻole e like me ka hoʻomehana ʻana, ka hoʻoluʻu, ka lawe ʻana i ka aila, a me ka halihali mahu.

Nā pilikia maʻamau a me nā hoʻonā i ke kūkulu ʻana i nā paipu insulation thermal i kanu pololei ʻia

He mea maʻamau kēia ʻano i ka hāʻule a me ka hoʻoilo a i ke kūkulu ʻia ʻana o ke kakahiaka, no ka mea, hāʻule koke ka mahana a i ʻole ka haʻahaʻa.Hiki ke hoʻonāʻia ma ka hoʻonuiʻana i ka mahana ambient a me ka mahana o ka meaʻeleʻele.ʻO ka mea maʻamau, hoʻokiʻekiʻe ʻia ka mahana o ka mea ʻeleʻele i 30-60 ° C, a piʻi ka mahana ambient i 20-30 ° C.

Hiki ke ʻano maʻamau i ka pūnāwai a me ke kauwela a i ke kūkulu ʻia ʻana i ke awakea, no ka mea, piʻi koke ka mahana a kiʻekiʻe loa ka mahana.Hiki ke hoʻoluʻu ʻia ka mea ʻeleʻele me ka wai anuanu a waiho ʻia i waho i ka pō no ka hoʻoluʻu kūlohelohe e pale aku i ka lā.

He liʻiliʻi ka ikaika o ka huʻa o ka paipu insulation i kanu ʻia a ʻoi aku ka palupalu.Hoʻokumu ʻia kēia hanana ma muli o ke kaulike ʻole o ka ratio o nā mea ʻeleʻele a me nā mea keʻokeʻo.Hiki ke hoʻonui ʻia ka nui o nā mea ʻeleʻele (1:1-1.05).E makaʻala ʻaʻole e hoʻonui i ka nui o nā mea ʻeleʻele, inā ʻaʻole, e lilo ia i mea palupalu, e pili pū ana i ka hana ʻana o ka pua.

Ua lilo ʻo Direct buried insulation pipe i ʻenehana holomua maʻamau i kekahi mau ʻāina hoʻomohala ma waho.I nā makahiki he ʻumi i hala iho nei, ke hāpai nei ka ʻenekinia hoʻomehana a me nā limahana loea i ka hoʻomohala ʻana i ka ʻenehana hoʻomoe paipu kūloko i kahi kiʻekiʻe ma o ka ʻeli ʻana a me ka lawe ʻana i kēia ʻenehana holomua.ʻO nā hopena kūpono i nā makahiki he ʻumi i hala iho nei ua hōʻoia piha i ke ʻano o ka hoʻomoe ʻana o ka pipeline insulation thermal i kanu pono ʻia he nui nā pono i hoʻohālikelike ʻia me ka ʻauwaha kuʻuna a me ka waiho ʻana i luna.Hoʻopili pono ʻia ka paipu hoʻoheheʻe wela i kanu ʻia me ka paipu kila no ka lawe ʻana i ke kikowaena, ka polyethylene kiʻekiʻe kiʻekiʻe o waho o ka pahu, a me ka polyurethane foam insulation layer ma waena o ka paipu kila a me ka pahu o waho.ʻO kēia hoʻi ka ikaika hoʻokele kūloko no ka hoʻomohala wikiwiki ʻana o ka polyurethane thermal insulation i kanu pololei ʻia i nā paipu i kanu ʻia i loko o ka ʻenekinia wela o koʻu ʻāina.