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Technical rule [Pre-order]

VDI 4635 Blatt 3.4

Power-to-X - Liquid hydrocarbons
Edition 2025-09

Draft technical rule

VDI 4635 Blatt 3.4

Power-to-X - Liquid hydrocarbons
Edition 2023-11

Technical rule [CURRENT]

VDI-EE 4635 Blatt 4.1

Power-to-X - Approval procedures for Power-to-X plants
Edition 2024-08

Draft technical rule

VDI 4640 Blatt 1

Thermal use of the underground - Fundamentals, approvals, environmental aspects
Edition 2021-12

Technical rule [CURRENT]

VDI 4640 Blatt 1

Thermal use of the underground - Fundamentals, approvals, environmental aspects
Edition 2010-06

Technical rule [CURRENT]

VDI 4640 Blatt 1 Berichtigung

Thermal use of the underground - Fundamentals, approvals, environmental aspects, Corrigendum concerning guideline VDI 4640 Part 1:2010-06
Edition 2011-12

Technical rule [CURRENT]

VDI 4640 Blatt 2

Thermal use of the underground - Ground source heat pump systems
Edition 2019-06

Technical rule [CURRENT]

VDI 4640 Blatt 2 Berichtigung

Thermal use of the underground - Ground source heat pump systems, Corrigendum concerning standard VDI 4640 Part 2:2019-06
Edition 2020-04

Technical rule [CURRENT]

VDI 4640 Blatt 3

Utilization of the subsurface for thermal purposes - Underground thermal energy storage
Edition 2001-06

Technical rule [CURRENT]

VDI 4640 Blatt 4

Thermal use of the underground - Direct uses
Edition 2004-09

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