Heat pump energy storage device pictures

What is pumped thermal electricity storage (PTEs)?

Pumped Thermal Electricity Storage (PTES) is a grid-scale energy management device that stores electricity in a thermal potential between hot and cold media. PTES has been investigated globally under a variety of names and is being commercially developed.

How does a heat pump work?

This heat is deployed instead of the recompression when solar electricity is to be dispatched to the grid. Using a heat pump to create this hot storage also leads to the generation of a cold storage, which may subsequently be used to reduce the heat rejection temperature of the CSP power cycle.

How does a heat pump battery work?

The battery is based on the CHEST (compressed heat energy storage) process and uses a patented doubleribbed tube heat exchanger to move heat between the heat pump and the heat engine.

What is the exergetic round-trip efficiency of a solar heat pump?

The exergetic round-trip efficiency the maximum work that can be extracted from the solar heat input is given by: FIGURE 5. Schematic diagram of the heat pump charging phase that creates a hot storage to replace the recompressor in an sCO2 cycle. A cold storage is also generated.

What is a sshp heat pump & chiller-heater system?

Like any heat pump or chiller-heater system, it benefits greatly from an optimized hot-water supply temperature in the range of 95°F to 110°F, although higher temperatures may be achievable. The basis of the SSHP system is that the chiller-heater can source energy from water in the thermal energy storage tanks to enable building heating.

How does a hot fluid transfer energy to a cold storage media?

The hot fluid transfers its energy to a thermal storage media such as a packed bed of rocks or molten salt (23) before being expanded (and cooled) to its original pressure (34), before finally exchanging heat with the cold storage media (41). The charging process thus creates a cold store and a hot store.