A system for heat transfer comprising: a primary evaporator (115, 500, 600) configured to be operable to facilitate heat transfer by evaporating received liquid to obtain vapor, the primary evaporator (115, 500, 600) including a first port for receiving the liquid from a liquid line, a second port for outputting the vapor to a vapor line, and a third port for outputting excess liquid received from the liquid line to an excess fluid line, the primary evaporator (115, 500, 600) further including a core, a primary wick, and a secondary wick; a condensing system configured to be operable to receive the vapor from the vapor line, to condense at least some of the vapor, and to output the liquid to the liquid line; a primary loop including the condensing system, the primary evaporator (115, 500, 600), the liquid line, the vapor line, the first port, and the second port, the primary loop being configured to be operable to provide a heat transfer path; a secondary loop including the condensing system, the primary evaporator (115, 500, 600), the liquid line, the vapor line, the first port, the third port and the excess fluid line, the secondary loop being configured to be operable to provide a venting path for removing other vapor that is present within the liquid from the primary evaporator (115, 500, 600); and a venting system being configured to remove vapor bubbles from the core of the primary evaporator (115, 500, 600) to the condensing system, the venting system including: an active pumping system being configured to be operable to provide excess liquid to the primary evaporator (115, 500, 600) beyond a saturation amount of liquid needed for saturating the primary wick; and a reservoir in fluid communication with the condensing system, the reservoir being in fluid communication with the pumping system and configured to provide the excess liquid, wherein the venting system is configured to vent vapor bubbles and excess liquid from the core of the primary evaporator (115, 500, 600) through the third port to the excess fluid line with the active pumping system. a primary evaporator (115, 500, 600) configured to be operable to facilitate heat transfer by evaporating received liquid to obtain vapor, the primary evaporator (115, 500, 600) including a first port for receiving the liquid from a liquid line, a second port for outputting the vapor to a vapor line, and a third port for outputting excess liquid received from the liquid line to an excess fluid line, the primary evaporator (115, 500, 600) further including a core, a primary wick, and a secondary wick; a condensing system configured to be operable to receive the vapor from the vapor line, to condense at least some of the vapor, and to output the liquid to the liquid line; a primary loop including the condensing system, the primary evaporator (115, 500, 600), the liquid line, the vapor line, the first port, and the second port, the primary loop being configured to be operable to provide a heat transfer path; a secondary loop including the condensing system, the primary evaporator (115, 500, 600), the liquid line, the vapor line, the first port, the third port and the excess fluid line, the secondary loop being configured to be operable to provide a venting path for removing other vapor that is present within the liquid from the primary evaporator (115, 500, 600); and a venting system being configured to remove vapor bubbles from the core of the primary evaporator (115, 500, 600) to the condensing system, the venting system including: an active pumping system being configured to be operable to provide excess liquid to the primary evaporator (115, 500, 600) beyond a saturation amount of liquid needed for saturating the primary wick; and a reservoir in fluid communication with the condensing system, the reservoir being in fluid communication with the pumping system and configured to provide the excess liquid, wherein the venting system is configured to vent vapor bubbles and excess liquid from the core of the primary evaporator (115, 500, 600) through the third port to the excess fluid line with the active pumping system. an active pumping system being configured to be operable to provide excess liquid to the primary evaporator (115, 500, 600) beyond a saturation amount of liquid needed for saturating the primary wick; and a reservoir in fluid communication with the condensing system, the reservoir being in fluid communication with the pumping system and configured to provide the excess liquid, wherein the venting system is configured to vent vapor bubbles and excess liquid from the core of the primary evaporator (115, 500, 600) through the third port to the excess fluid line with the active pumping system.