I-Dewar Flasks idlala indima ebaluleke kakhulu kwinzululwazi eyahlukeneyo yesayensi, yezonyango, kunye nezicelo zeshishini.
Kweli nqaku, siqhuba uhlalutyo oluneenkcukacha zokuthelekisa phakathi kweeflethi zemveli zemveli kunye netekhnoloji yokugcina amanzi etanki yanamhlanje.
IINGXAKI ZOBUCHULE BOKUGQIBELAIitanki zokugcina inxeba le-vacuum yenxeba kunye ne-insure, enemilinganiselo yokuphuma yemihla ngemihla iphantse ibe ngama-40% asezantsi kunetanki yokugcina izinto eziqhelekileyo, kwaye phantse ukukhutshwa kwero.
IINGXAKI ZOBUCHULE BOKUGQIBELAAkukho bunzima obufunekayo: ukongezwa kwemitha yokuhamba kwamanzi kubonelela ngokufunda ngokuthe ngqo, ukuphelisa ubunzima kunye nokuhamba ngeendleko kunye nokujikeleza kunye nokuphucula ukusebenza ngokukuko.