Brayton cycle heat pump energy storage

What is inverse Brayton thermodynamic cycle?

It is considered as an inverse Brayton thermodynamic cycle. The working fluid absorbs heat from a cold storage at temperature , and using a network from the external energy source (wind, PV, or whichever) through a compressor, it is compressed by increasing its pressure and temperature. In this way, it can transfer heat to a hot storage at .

Can Brayton cycle heat pumps be integrated in hybrid PV-CSP power plants?

This paper presents a technical assessment of Brayton cycle heat pumps to be integrated in hybrid PV-CSP power plants. As a first step, a theoretical analysis was carried out to find the most suitable working fluid. The analysis included the fluids Air, Argon (Ar), Nitrogen (N2) and Carbon dioxide (CO2).

How efficient is a PHES system based on a Joule/Brayton cycle?

A PHES system based on a Joule/Brayton cycle is designed, considering commercially available and state-of-the-art components. Employing the developed models and an exergoeconomic analysis, the transient operation of the PHES system is simulated and evaluated. The analyzed PHES system reaches a round-trip efficiency of 42.9%.

What is pumped heat energy storage (PHES)?

A location-independent alternative is the relatively new technology known as pumped heat electricity storage (PHES) system which stores electrical energy via the detour of thermal energy in thermal energy storage (TES) subsystems.

What is pumped thermal energy storage (PTEs)?

Substantial efforts are being devoted to the so-called Pumped Thermal Energy Storage (PTES) systems [ 2 ]. They are aimed at storing energy during the hours with an excess of, for instance, wind or photovoltaic production. When electric energy is subsequently required, heat is transformed again in electricity through some thermodynamic cycle.

What are the working fluids in Brayton-like thermodynamic cycles?

The working fluids in Brayton-like thermodynamic cycles are gases stable at high temperatures, chemically inert, cheap, and environmentally friendly [ 9 ]. These requirements limit the options to Ar and N (or air).