TheDeltaphase®IsothermalPadisanewapproachtobodytemperaturestABIlization.Itactsasasourceofheat,butcannotoverheatonceithasreachedit"sphasechange.Itsconstanttemperatureisbasedonathermodynamicprincipleandneedsnoelectricityorwires,nothermostatorfeedbackcontroller.Itcannotgenerateelectricalsignalsorcauseinterference.Itcannottriggeranexplosion.Itcanmaintainasmallanimalatnearnormalandconstanttemperatureforseveralhours. TheDeltaphase®IsothermalPadisbasedonthethermodynamicprinciplethataheatreleasingphasechangeisisothermal,thatis:thatitoccursatconstanttemperature.Auniquechemicalsolutioniscontainedwithinadurablepouch.Atroomtemperaturethissolutionisinsolidform.Whenheatedto39°thesolutionbecomesfluid.Inthisstate,thepadisactivatedandreadyforuse.Whenananimal(oranycoolerobject)isplacedincontactwiththeactivatedpad,heatleavesthesolutionasitundergoesaphasechangebacktothesolidform.Inthisphasechange,over30caloriesofheatarereleasedpergramofsolution,eventhoughthetemperatureisconstant.Thepadremainsisothermaluntilalltheliquidphasehassolidified.Onlythendoesitstemperaturefall.Thetransitiontemperaturehasbeenpresetto39°sothatasmalltemperaturegrADIentalwaysexistsforheatflowfrompadtoanimal.Thisheatflowbalancesheatlossesandmaintainsanimalbodytemperaturenear 39°forperiodsuptoseveralhours.
