Heat transfer from a source to a fluid to be heated using a heat driven loop

A method for transferring heat from a combustion heat source to a fluid to be heated comprising:

• providing a combustion heat source;
• providing a fluid to be heated at a position spaced from the heat source;
• providing a closed system including at least one conduit;
• providing an evaporation section of the closed system at the heat source;
• providing a condensation section of the closed system in the fluid to be heated;
• providing a heat transfer fluid medium within the closed system having a temperature of boiling from liquid to vapor such that heat from the heat source causes the liquid to boil to form a vapor in the evaporation section and such that release of heat from the condensation section to the fluid to be heated causes the vapor to condense to liquid in the condensation section;
• the at least one conduit forming a loop extending from the evaporation section through the condensation section and back to the evaporation section so as to conduct the heat transfer fluid medium from the evaporation section to the condensation section and back to the evaporation section;
• applying heat energy to the heat transfer medium by the heat source at the vaporizer section thermal energy causes expansion of volume due to a change of state;
• and causing boiling of the liquid in the evaporation section and flow of the vapor from the evaporation section to carry non-vapor additives in the liquid in the evaporation section into the conduit with the vapor.

A method for transferring heat from a combustion heat source to a fluid to be heated comprising:

• providing a combustion heat source;
• providing a fluid to be heated at a position spaced from the heat source;
• providing a closed system including at least one conduit;
• providing an evaporation section of the closed system at the heat source;
• providing a condensation section of the closed system in the fluid to be heated;
• providing a heat transfer fluid medium within the closed system having a temperature of boiling from liquid to vapor such that heat from the heat source causes the liquid to boil to form a vapor in the evaporation section and such that release of heat from the condensation section to the fluid to be heated causes the vapor to condense to liquid in the condensation section;
• the at least one conduit forming a loop extending from the evaporation section through the condensation section and back to the evaporation section so as to conduct the heat transfer fluid medium from the evaporation section to the condensation section and back to the evaporation section;
• applying heat energy to the heat transfer medium by the heat source at the vaporizer section thermal energy causes expansion of volume due to a change of state;
• wherein the system is at least partly evacuated prior to start up such that during steady state operation the pressure in the system is less than 15 psi above atmospheric pressure.

A method for transferring heat from a combustion heat source to a fluid to be heated comprising:

• providing a combustion heat source;
• providing a fluid to be heated at a position spaced from the heat source;
• providing a closed system including at least one conduit;
• providing an evaporation section of the closed system at the heat source;
• providing a condensation section of the closed system in the fluid to be heated;
• providing a heat transfer fluid medium within the closed system having a temperature of boiling from liquid to vapor such that heat from the heat source causes the liquid to boil to form a vapor in the evaporation section and such that release of heat from the condensation section to the fluid to be heated causes the vapor to condense to liquid in the condensation section;
• the at least one conduit forming a loop extending from the evaporation section through the condensation section and back to the evaporation section so as to conduct the heat transfer fluid medium from the evaporation section to the condensation section and back to the evaporation section;
• applying heat energy to the heat transfer medium by the heat source at the vaporizer section thermal energy causes expansion of volume due to a change of state;
• wherein the total volume of liquid in the system is less than 43.5 litres or 1.5 cu ft.

A method for transferring heat from a combustion heat source to a fluid to be heated comprising:

• providing a combustion heat source;
• providing a fluid to be heated at a position spaced from the heat source;
• providing a closed system including at least one conduit;
• providing an evaporation section of the closed system at the heat source;
• providing a condensation section of the closed system in the fluid to be heated;
• providing a heat transfer fluid medium within the closed system having a temperature of boiling from liquid to vapor such that heat from the heat source causes the liquid to boil to form a vapor in the evaporation section and such that release of heat from the condensation section to the fluid to be heated causes the vapor to condense to liquid in the condensation section;
• the at least one conduit forming a loop extending from the evaporation section through the condensation section and back to the evaporation section so as to conduct the heat transfer fluid medium from the evaporation section to the condensation section and back to the evaporation section;
• applying heat energy to the heat transfer medium by the heat source at the vaporizer section thermal energy causes expansion of volume due to a change of state;
• wherein flow around the loop is biased in one direction by a head created in part by a pump;
• and wherein there is provided a viewing port for viewing passage of vapor from the evaporation section;
• and wherein the operation of the process is controlled by varying the flow rate of the pump while viewing passage of vapor from the evaporation section so as to ensure passage substantially wholly of vapor with a minimal amount of liquid.

A method for transferring heat from a combustion heat source to a fluid to be heated comprising:

• providing a combustion heat source;
• providing a fluid to be heated at a position spaced from the heat source;
• providing a closed system including at least one conduit;
• providing an evaporation section of the closed system at the heat source;
• providing a condensation section of the closed system in the fluid to be heated;
• providing a heat transfer fluid medium within the closed system having a temperature of boiling from liquid to vapor such that heat from the heat source causes the liquid to boil to form a vapor in the evaporation section and such that release of heat from the condensation section to the fluid to be heated causes the vapor to condense to liquid in the condensation section;
• the at least one conduit forming a loop extending from the evaporation section through the condensation section and back to the evaporation section so as to conduct the heat transfer fluid medium from the evaporation section to the condensation section and back to the evaporation section;
• applying heat energy to the heat transfer medium by the heat source at the vaporizer section thermal energy causes expansion of volume due to a change of state;
• wherein flow around the loop is biased in one direction by a head created in part by a pump;
• and wherein the pump is a positive displacement pump so that the rate of flow is directionally proportional to a rotation rate of the pump.