Method for heating a road by means of geothermally fed heating installation as well as a road-heating installation for carrying out the method
US4693301A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1986 |
| Grant date | Sep 15, 1987 |
| Priority date | — |
| Expiry date | Sep 12, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/10
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A road heating installation which is supplied by heat stored in the ground and which includes heat pipes placed heat-conductingly with the road surface, is provided with sensors for detecting the climate factors relevant for the road condition and is equipped with a control apparatus that controls the heating installation as a function of the climate. In order to remove the heat energy stored in the ground only in case of need and to avoid the unnecessary exhaustion thereof, the invention provides that the heat transfer capacity of the heat pipe is controllable by a reversible blocking of the condensation zones of the heat pipes and the blocking is brought about in case of a dry-cold by the supply of an inert gas into the condensation zones of the heat pipes which is quantity-regulatable directly from the outside.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.