Hermetic High Temperate Heating Circulator yana sanye da tankin fadadawa, kuma tankin fadadawa da tsarin kewayawa adiabatic ne. Matsakaicin thermal a cikin jirgin ba ya shiga cikin tsarin kewayawa, amma an haɗa shi da injin kawai. Komai matsakaicin thermal a cikin tsarin kewayawa yana da girma ko ƙasa, matsakaici a cikin tankin faɗaɗa koyaushe yana ƙasa da 60 °.
Duk tsarin shine tsarin hermetic. Tare da yawan zafin jiki, ba zai haifar da hazo mai ba; tare da ƙananan zafin jiki, ba zai sha danshi a cikin iska ba. A cikin babban aiki na zafin jiki, matsa lamba na tsarin ba zai tashi ba, kuma a cikin ƙananan zafin jiki, tsarin za a kara yawan matsakaici na thermal ta atomatik.