EP 2780555 A1 20140924 - THERMAL ENERGY STORAGE SYSTEM
Title (en)
THERMAL ENERGY STORAGE SYSTEM
Title (de)
WÄRMEENERGIESPEICHERSYSTEM
Title (fr)
SYSTÈME DE STOCKAGE D'ÉNERGIE THERMIQUE
Publication
Application
Priority
- US 201161559318 P 20111114
- US 2012065120 W 20121114
Abstract (en)
[origin: US2013118170A1] A variety of energy storage and retrieval systems are described. Generally "hot" and "cold thermal reservoirs are provided. The "hot" reservoir holds both liquid and saturated vapor phase working fluid. The "cold" reservoir holds working fluid at a lower temperature than the hot reservoir. A heat engine/heat pump unit: (a) extracts energy from vapor passing from the hot reservoir to the cold reservoir via expansion of the vapor in a manner that generates mechanical energy to facilitate retrieval of energy; and (b) compresses vapor passing from the cold reservoir to the hot reservoir to facilitate the storage of energy. In some embodiments, the heat engine/heat pump takes the form of a reversible positive displacement heat engine that can act as both an expander and a compressor. To facilitate the storage and retrieval of electrical energy, an electric motor/generator unit may be mechanically coupled to the heat engine/heat pump unit.
IPC 8 full level
F01K 3/02 (2006.01); F01B 17/04 (2006.01); F01K 3/00 (2006.01); F01K 3/12 (2006.01); F01K 7/02 (2006.01); F01K 7/36 (2006.01)
CPC (source: EP US)
F01K 3/006 (2013.01 - EP US); F01K 3/12 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
US 2013118170 A1 20130516; EP 2780555 A1 20140924; EP 2780555 A4 20150722; JP 2015503048 A 20150129; WO 2013074699 A1 20130523
DOCDB simple family (application)
US 201213677241 A 20121114; EP 12849192 A 20121114; JP 2014541424 A 20121114; US 2012065120 W 20121114