A biomass torrefaction system is provided which enables a continuous torrefaction process that involves the introduction of biomass particles into a rotating reactor drum having a low oxygen environment. The particles are conveyed through the drum by a heated gas stream and simultaneously torrefied thereby. Gas exiting the drum is recirculated back to a heat source for reheating the gas prior to reentering the drum. A method of biomass torrefaction is also provided.

Biomass torrefaction system and method

The present invention relates to an AA-CAES method, wherein heat is exchanged between gas and a heat-transfer fluid in a heat exchange means (1) comprising means for direct contact between the gas and the heat-transfer fluid, preferably a contactor (4), the AA-CAES system and method further comprising heat storage means (2, 3).

System and method for storing and recovering energy using compressed gas by means of direct heat exchange between gas and a fluid

A compressed gas energy storage system may include an accumulator for containing a layer of compressed gas atop a layer of liquid. A gas conduit may have an upper end in communication with a gas compressor/expander subsystem and a lower end in communication with accumulator interior for conveying compressed gas into the compressed gas layer of the accumulator when in use. A shaft may have an interior for containing a quantity of a liquid and may be fluidly connectable to a liquid source/sink via a liquid supply conduit. A partition may cover may separate the accumulator interior from the shaft interior. An internal accumulator force may act on the inner surface of the partition and the liquid within the shaft may exert an external counter force on the outer surface of the partition, whereby a net force acting on the partition is less than the accumulator force.

Hydrostatically compensated compressed gas energy storage system

A heat exchanger with integrated thermal storage, for example, having a new tertiary side utilising phase change material in between and in thermal contact with the primary and secondary circuits, e.g. of a plate heat exchanger. The tertiary side helps reduce e.g. leak flows in district heating applications, or reduce energy losses in periods of low flow through the heat exchanger. By including thermal energy storage in a heat exchanger or reactor, response times of the systems are reduced as well as internal energy losses, and external energy storage units are reduced in number or are potentially rendered obsolete.

Storage integrated heat exchanger

Biomass torrefaction method

La presente invention concerne un systeme et un procede de stockage et de recuperation d'energie par gaz comprime (par exemple du type AACAES) dans lequel le stockage de chaleur est mis en œuvre par un echange de chaleur radial entre le gaz (G) et des particules de stockage de la chaleur (3).

Systeme et procede de stockage et de recuperation d'energie par gaz comprime avec echange de chaleur radial

The present invention relates to a device for heat exchange between a fluid and heat storage particles (6). The exchange system comprises two volumes (2, 3) for storing the particles, and an exchange zone (4) in which the fluid (F) and said heat storage particles (6) flow in counter-current.

Device and method for counter-current heat exchange between a fluid and heat storage particles

Systeme et procede de stockage et de restitution d'energie par gaz comprime. System and storage and energy return process by compressed gas. Le systeme comporte au moins un moyen de compression (12) de gaz, au moins un moyen de stockage du gaz comprime (13), au moins un moyen de detente (14) dudit gaz comprime pour generer une energie, et au moins un moyen de stockage de la chaleur (1), caracterise en ce que ledit moyen de stockage de la chaleur (1) comporte un agencement etage forme d'au moins deux lits fixes de particules de stockage de la chaleur et au moins un moyen de discontinuite du gradient thermique entre deux lits adjacents. The system comprises at least one compression means (12) of gas, at least one storage means of the compressed gas (13), at least one detent means (14) of compressed gas for generating power, and at least one the heat storage medium (1), characterized in that said heat storage means (1) comprises a stepped arrangement formed from at least two fixed beds of the heat storage particles and at least one discontinuity means the thermal gradient between two adjacent beds. Application notamment au stockage et restitution d'energie par air comprime. Application including storage and energy return by air. Figure 1 a publier. Figure 1 to publish.

System and method for storing and restoring energy by compressed gas

The present invention relates to a system and a method for exchanging heat between a fluid (F) and heat storage particles (3). The exchange system comprises an exchange zone (2) in which the fluid (F) and the heat storage particles in a fluidized bed flow as a countercurrent flow and a cross flow. The invention also relates to a compressed gas energy storage and restoration system and method using the heat exchange system.

System and method for the crossflow exchange of heat between a fluid and heat storage particles

The invention comprises at least one gas compressor, at least one compressed gas storage, at least one expander for expanding the compressed gas for generating energy, and at least one heat storage, wherein the heat storage comprises a staged arrangement at least two fixed beds of heat storage particles and at least one discontinuity in a thermal gradient located between two adjacent beds.

Nastoll Willi

Papers

Systeme et procede de stockage et de recuperation d'energie par gaz comprime avec echange de chaleur radial

Device and method for counter-current heat exchange between a fluid and heat storage particles

System and method for storing and restoring energy by compressed gas

System and method for the crossflow exchange of heat between a fluid and heat storage particles

Compressed gas energy storage and restitution system and method