A method comprising: cooling a thermal load with cooling fluid that is a mixture of a first fluid flow received from a thermal energy storage and a second fluid flow comprising cooling fluid heated by the thermal load and pumped by a cooling pump; supplying the thermal energy storage with a third fluid flow that comprises cooling fluid heated by the thermal load and cooled by a cooling source, the third fluid flow pumped through the cooling pump; and switching to a recharge mode in response to a recharge enable trigger, wherein switching to the recharge mode comprises: enabling a recharge fluid flow from an output of the thermal energy storage to the cooling pump by opening a recharge valve, where the recharge fluid flow is caused by the cooling pump, wherein the recharge fluid flow is the cooling fluid pumped by the cooling pump from the thermal energy storage through the cooling source and back to the thermal energy storage in the recharge mode, wherein a cooling potential of the thermal energy storage is increased by the recharge fluid flow, and cooling the thermal load with cooling fluid that is a mixture of the first fluid flow received from the thermal energy storage and a bypass fluid flow, wherein the bypass fluid flow bypasses the cooling pump and is caused by the operation of a recharge pump, the bypass fluid flow comprising cooling fluid that is heated by the thermal load and pumped through recharge pump; and switching to a load mode in response to the recharge disable trigger, wherein switching to the load mode comprises: disabling the recharge fluid flow from the output of the thermal energy storage to the cooling pump by closing the recharge valve, and disabling the bypass fluid flow by ceasing operation of the recharge pump. cooling a thermal load with cooling fluid that is a mixture of a first fluid flow received from a thermal energy storage and a second fluid flow comprising cooling fluid heated by the thermal load and pumped by a cooling pump; supplying the thermal energy storage with a third fluid flow that comprises cooling fluid heated by the thermal load and cooled by a cooling source, the third fluid flow pumped through the cooling pump; and switching to a recharge mode in response to a recharge enable trigger, wherein switching to the recharge mode comprises: enabling a recharge fluid flow from an output of the thermal energy storage to the cooling pump by opening a recharge valve, where the recharge fluid flow is caused by the cooling pump, wherein the recharge fluid flow is the cooling fluid pumped by the cooling pump from the thermal energy storage through the cooling source and back to the thermal energy storage in the recharge mode, wherein a cooling potential of the thermal energy storage is increased by the recharge fluid flow, and cooling the thermal load with cooling fluid that is a mixture of the first fluid flow received from the thermal energy storage and a bypass fluid flow, wherein the bypass fluid flow bypasses the cooling pump and is caused by the operation of a recharge pump, the bypass fluid flow comprising cooling fluid that is heated by the thermal load and pumped through recharge pump; and switching to a load mode in response to the recharge disable trigger, wherein switching to the load mode comprises: disabling the recharge fluid flow from the output of the thermal energy storage to the cooling pump by closing the recharge valve, and disabling the bypass fluid flow by ceasing operation of the recharge pump. enabling a recharge fluid flow from an output of the thermal energy storage to the cooling pump by opening a recharge valve, where the recharge fluid flow is caused by the cooling pump, wherein the recharge fluid flow is the cooling fluid pumped by the cooling pump from the thermal energy storage through the cooling source and back to the thermal energy storage in the recharge mode, wherein a cooling potential of the thermal energy storage is increased by the recharge fluid flow, and cooling the thermal load with cooling fluid that is a mixture of the first fluid flow received from the thermal energy storage and a bypass fluid flow, wherein the bypass fluid flow bypasses the cooling pump and is caused by the operation of a recharge pump, the bypass fluid flow comprising cooling fluid that is heated by the thermal load and pumped through recharge pump; and switching to a load mode in response to the recharge disable trigger, wherein switching to the load mode comprises: disabling the recharge fluid flow from the output of the thermal energy storage to the cooling pump by closing the recharge valve, and disabling the bypass fluid flow by ceasing operation of the recharge pump.