Abstract:
Generally, this disclosure relates to methods of prioritizing or directing available power to a main device, such as a temperature-stabilized and/or temperature-controlled storage container. In an embodiment, the method may include measuring electrical power available from a solar photovoltaic module array that is electrically coupled to the main device, and modulating the electrical power drawn by the main device based on the available electrical power. Available power unused by the main device may be diverted to one or more secondary devices.
Abstract:
In some embodiments, a refrigeration device includes: walls substantially forming a liquid-impermeable container configured to hold phase change material internal to the refrigeration device; at least one active refrigeration unit including a set of evaporator coils positioned at least partially within the liquid-impermeable container; a unidirectional thermal conductor with a condensing end and an evaporative end, the condensing end positioned within the liquid-impermeable container; a first aperture in the liquid-impermeable container, the first aperture of a size, shape and position to permit the set of evaporator coils to traverse the aperture; a second aperture in the liquid-impermeable container, the second aperture including an internal surface of a size, shape and position to mate with an external surface of the unidirectional thermal conductor; and one or more walls substantially forming a storage region in thermal contact with the evaporative end of the unidirectional thermal conductor.
Abstract:
In some embodiments, a temperature-controlled container for use within a refrigeration device includes: one or more sections of insulation material substantially defining one or more walls of a temperature-controlled container, the temperature-controlled container including an internal region; a thermally-insulated partition dividing the internal region to form a storage region and a phase change material region internal to the container, the thermally-insulated partition including a conduit between the storage region and the phase change material region; a thermal control device within the conduit; an aperture within a section of the insulation material substantially defining the container, the aperture between the phase change material region internal to the container and an external surface of the container; and a unidirectional thermal conductor positioned within the aperture, the unidirectional thermal conductor configured to transmit heat in a direction from the phase change material region to the external surface of the container.
Abstract:
A refrigeration device includes a thermal transfer unit with an evaporative region, an adiabatic region, and a condensing region with a reversible valve attached to the adiabatic region. The device includes a container sealed around PCM, with a set of refrigeration coils of a compressor unit in thermal contact with the PCM. A storage region is in thermal contact with the evaporative region of the thermal transfer unit. A controller is operably connected to the reversible valve and the refrigeration compressor unit. The storage region can be used to store cold packs within a predetermined temperature range for medical outreach.