Experimental Study on a New-Type Thermoelectric Heat Pump Phase Change Thermal Energy Storage Device

This paper integrated the technology of thermoelectric heat pump and phase-change thermal storage, developed an active phase-change thermal storage/release device, which can retrieve and utilize low-quality energy(cryogenic energy), and made experimental study on it. The experimental results show that: the device has obvious phase-change process and striking thermal storage effect. When storing heat, the highest heating coefficient of THP can come up to 2.2, when THP was used to supply heat for the part, the highest heating coefficient can come up to 5.6. The device overcame the uncontrollability of the heat transfer intensity and time, which usually occurred in the process of traditional passive heat storage/release, and greatly improved the efficiency of retrieving and utilizing low-temperature exhaust heat.