Device and method for storing heat

US10168105B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Jürgen Wortmann · Weichs, DE
• Claus Schäfer · Hochdorf-Assenheim, DE
• Michael Lutz · Speyer, DE
• Fabian Seeler · Dossenheim, DE
• Martin Gärtner · Worms, DE
• Felix Major · Mannheim, DE
• Kerstin Schierle-Arndt · Zwingenberg, DE
• Otto Machhammer · Mannheim, DE
• Günther Huber · Munich, DE
• Stephan Maurer · Neustadt, DE

Key dates

• Filing date: May 4, 2011
• Grant date: Jan 1, 2019
• Expiry date: May 23, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/14
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a device for storing heat, comprising a heat storage medium which absorbs heat in order to store heat and releases heat in order to use the stored heat, and a container for holding the heat storage medium, the container being closed by a gastight cover, and the device comprising volume compensation means in order to compensate for a volume increase of the heat storage medium (3) due to a temperature rise and a volume decrease due to a temperature reduction. The invention furthermore relates to a method for storing heat, in which heat is transferred to a heat storage medium in order to store heat or heat is discharged from the heat storage medium to the heat carrier in order to use the heat, the heat storage medium being held in a container which is closed by a gastight cover, wherein a volume expansion of the heat storage medium (3) is compensated for by a volume increase of the container (1) or by heat storage medium (3) flowing out of the container (1) into a buffer container (21; 63, 65), and a volume decrease of the heat storage medium (3) is compensated for by a volume decrease of the container (1) or by heat storage medium (3) flowing out of the buffe…