A heat exchanging device using a thermoelectric element includes a thermoelectric element for generating heat absorption or heat generation on different surfaces thereof when a voltage is applied thereto, a heat sink for cooling the thermoelectric element, and a cooling channel for cooling a coolant through the heat absorption of the thermoelectric element.

A water heating device includes a space that is filled with water, an electric heating device provided for heating the water in the space and power electronics arranged at the space and provided for controlling the heating device. An electrothermal converter is provided for controlled transfer of heat between the power electronics and a wall of the space which is in contact with the water.

A column-conditioning enclosure includes a column chamber adapted to hold one or more chromatography separation columns. A duct system provides an airflow path around the column chamber such that the one or more chromatography separation columns held within the column chamber are isolated from the airflow path. An air mover disposed in the airflow path generates a flow of air within the duct system. A heat exchanger system disposed in the airflow path near the air to exchange heat with the air as the air flows past the heat exchanger system. The air circulates through the duct system around the column chamber, convectively exchanging heat with the column chamber to produce a thermally conditioned environment for the one or more chromatography separation columns held within the column chamber.

A heating/cooling module for interconnecting a heating/cooling system with a heating/cooling unit. The heating/cooling module including a solid-state energy conversion device, having a first side configured to receive a fluid flow preheated/precooled by the heating/cooling system to heat/cool the fluid flow to a higher/lower temperature while it flows through the first side of the solid-state energy conversion device, and to use the fluid flow with the higher/lower temperature for providing heat/cold to the heating/cooling unit. The solid-state energy conversion device having a second side that receives the fluid flow after being used for providing heat/cold to the heating/cooling unit to cool/heat the fluid flow to a lower/higher temperature and to reuse the fluid flow with the lower or higher temperature for preheating/precooling by the heating/cooling system.

A system includes a vortex tube. A first thermoelectric terminal is in thermal communication with the first outlet of the vortex tube. A second thermoelectric terminal is in thermal communication with the second outlet of the vortex tube. An electrical circuit is electrically connected to the first thermoelectric terminal and to the second thermoelectric terminal for electrical conduction of Peltier-effect thermoelectric current. The systems and methods described herein can be used to enhance temperature difference generated in a vortex tube, and/or to harvest energy from the temperature difference in a vortex tube.

Disclosed herein is a heating medium temperature control device using a thermoelectric element. The heating medium temperature control device is connected to a temperature regulating apparatus and controls the temperature of a circulating heating medium. The device also includes a main tank, a heat exchange part, a heating medium circulation part, and an auxiliary heat dissipation part. The main tank accommodates the circulating heating medium and supplies the heating medium to the temperature regulating apparatus. The heat exchange part includes a thermoelectric element, a heating medium block, and a main heat dissipation part. The heating medium circulation part includes an inflow line connecting the heating medium block and the temperature regulating apparatus, and a discharge line connecting the main tank and the temperature regulating apparatus. The auxiliary heat dissipation part is connected to the main heat dissipation part.

A thermal conditioning system for a vehicle seat or other surface includes a thermoelectric Peltier device (TED) with a main side and a waste side. A flap adjusts a proportion of an airflow over the main and waste side airflow paths based on one or more operational parameters of the system. The operational parameters can include a power provided to the TED, the flow rate of the airflow, a thermal efficiency between the TED and the airflow, and/or a setpoint temperature of the airflow.