An improved finned coil tube assembly enhances evaporative heat exchanger performance, and includes tubes, preferably serpentine tubes, in the coil assembly. The tubes have a generally elliptical cross-section with external fins formed on an outer surface of the tubes. The fins are spaced substantially 1.5 to substantially 3.5 fins per inch (2.54 cm) along the longitudinal axis of the tubes, extend substantially 23.8% to substantially 36% of the nominal tube outside diameter in height from the tubes outer surface and have a thickness of substantially 0.007 inch (0.018 cm) to substantially 0.020 inch (0.051 cm). The tubes have a center-to-center spacing generally horizontally and normal to the longitudinal axis of the tubes of substantially 109% to substantially 125% of the nominal tube outside diameter, and a generally vertical center-to-center spacing of substantially 100% to about 131% of the nominal tube outside diameter.

An improved finned coil tube assembly enhances evaporative heat exchanger performance, and includes tubes, preferably serpentine tubes, in the coil assembly. The tubes have a generally elliptical cross-section with external fins formed on an outer surface of the tubes. The fins are spaced substantially 1.5 to substantially 3.5 fins per inch (2.54 cm) along the longitudinal axis of the tubes, extend substantially 23.8% to substantially 36% of the nominal tube outside diameter in height from the tubes outer surface and have a thickness of substantially 0.007 inch (0.018 cm) to substantially 0.020 inch (0.051 cm). The tubes have a center-to-center spacing generally horizontally and normal to the longitudinal axis of the tubes of substantially 109% to substantially 125% of the nominal tube outside diameter, and a generally vertical center-to-center spacing of substantially 100% to about 131% of the nominal tube outside diameter.

An evaporative cooler includes a first heat exchanger, a first coolant storage, a second coolant storage, and a first airflow drive. The first heat exchanger is capable of cooling a coolant flowing through the first heat exchanger, and cooling an air flowing through the first heat exchanger by way of the cooled coolant. The first coolant storage forms a first coolant circulating path with the first heat exchanger and provides the coolant to the first heat exchanger. The second coolant storage forms a second coolant circulating path with the first coolant storage and is capable of supplementing the first coolant storage with the coolant. The capacity of the second coolant storage is larger than that of the first coolant storage. The first airflow drive cooperates with the first heat exchanger to direct and eject the air flowing through the first heat exchanger.

An evaporative cooler includes a first heat exchanger, a first coolant storage, a second coolant storage, and a first airflow drive. The first heat exchanger is capable of cooling a coolant flowing through the first heat exchanger, and cooling an air flowing through the first heat exchanger by way of the cooled coolant. The first coolant storage forms a first coolant circulating path with the first heat exchanger and provides the coolant to the first heat exchanger. The second coolant storage forms a second coolant circulating path with the first coolant storage and is capable of supplementing the first coolant storage with the coolant. The capacity of the second coolant storage is larger than that of the first coolant storage. The first airflow drive cooperates with the first heat exchanger to direct and eject the air flowing through the first heat exchanger.

Methods, systems, devices and apparatuses for a charging apparatus for a vehicle. The charging apparatus includes a first sensor configured to measure or detect a temperature of the electronic device. The charging apparatus includes at least one of a blower, a bypass valve or a vent configured to adjust the temperature of the electronic device or a surface of a charging pad. The charging apparatus includes a processor coupled to the first sensor and the at least one of the blower, the bypass valve or the vent. The processor is configured to determine that the temperature of the electronic device exceeds a first threshold temperature. The processor is configured to control the at least one of the blower, the bypass valve or the vent to increase or decrease the temperature of the electronic device or the surface of the charging pad.

Methods, systems, devices and apparatuses for a charging apparatus for a vehicle. The charging apparatus includes a first sensor configured to measure or detect a temperature of the electronic device. The charging apparatus includes at least one of a blower, a bypass valve or a vent configured to adjust the temperature of the electronic device or a surface of a charging pad. The charging apparatus includes a processor coupled to the first sensor and the at least one of the blower, the bypass valve or the vent. The processor is configured to determine that the temperature of the electronic device exceeds a first threshold temperature. The processor is configured to control the at least one of the blower, the bypass valve or the vent to increase or decrease the temperature of the electronic device or the surface of the charging pad.

A heat exchange device comprising phase change material-impregnated heat conductive foam disposed between fluid stream channels in a heat exchanger element.

A heat exchange device comprising phase change material-impregnated heat conductive foam disposed between fluid stream channels in a heat exchanger element.

Cooling arrangement and method for cooling of a heat source. The cooling arrangement comprises a closed loop, a semi-open loop and at least one fan. The closed loop comprises a primary side of a liquid-to-liquid heat exchanger receiving a first cooling fluid heated by the heat source, a first air-to-liquid heat exchanger downstream said primary side, and a first pump returning the first cooling fluid to the heat source. The semi-open loop comprises a tank storing a second cooling fluid, a second pump drawing the second cooling fluid from the tank, a secondary side of the liquid-to-liquid heat exchanger receiving the second cooling fluid from the second pump, an evaporating pad downstream said secondary side, and an inlet fluidly connected to a source of the second cooling fluid. The at least one fan causes an air flow through the evaporating pad and through the first air-to-liquid heat exchanger.

Cooling arrangement and method for cooling of a heat source. The cooling arrangement comprises a closed loop, a semi-open loop and at least one fan. The closed loop comprises a primary side of a liquid-to-liquid heat exchanger receiving a first cooling fluid heated by the heat source, a first air-to-liquid heat exchanger downstream said primary side, and a first pump returning the first cooling fluid to the heat source. The semi-open loop comprises a tank storing a second cooling fluid, a second pump drawing the second cooling fluid from the tank, a secondary side of the liquid-to-liquid heat exchanger receiving the second cooling fluid from the second pump, an evaporating pad downstream said secondary side, and an inlet fluidly connected to a source of the second cooling fluid. The at least one fan causes an air flow through the evaporating pad and through the first air-to-liquid heat exchanger.