| 1. |
|
|
| 2. |
|
|
| 3. |
|
|
| 4. |
|
|
| 5. |
- Edstedt, Urban, et al.
(författare)
-
Borrhålslager : förutsättningar, erfarenheter, möjligheter
- 1994
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Heat storage in boreholes in rock, soil or clay is a relatively simple method for seasonal thermal energy storage. This publication gives a description of the technique of borehole heat storage in Sweden - methods, applications, experiences, and projecting aids, e.g. computer models.
|
|
| 6. |
|
|
| 7. |
- Gehlin, Signhild, et al.
(författare)
-
Thermal response tests of boreholes : results from in situ measurements
- 1998
-
Konferensbidrag (refereegranskat)abstract
- During the last year thermal response tests of boreholes in rock were carried out with a mobile test equipment (TED) in several duct stores for heating and/or cooling. Most of the tests were made for the Swedish telephone company TELIA that is constructing a great number of direct cooling systems for their telephone switching stations. The size of these duct systems in the different plants tested, varies from 4 to 60 boreholes, drilled in hard rock - mostly granite and gneiss. This paper summarises results and experience from the measurements.
|
|
| 8. |
|
|
| 9. |
- Jilar, Torbjörn, et al.
(författare)
-
Further R & D needs for Swedish solar heating technology 1990–1993 : An expert group plan sponsored by the Swedish Council for Building Research
- 1991
-
Ingår i: Energy Conservation in Buildings: The Achievement of 50% Energy Saving: An Environmental Challenge?. - Oxford : Pergamon Press. - 0080372155
-
Konferensbidrag (refereegranskat)abstract
- In the 1970's when the Swedish development seriously started, experimental plants were built with the primary aim of testing various technologies. The economical aspects were of secondary interest which, in many cases, resulted in high costs and even in poor quality. In the second plant generation during the 1980's, R & D was concentrated upon lowering costs and enhancing performances for the most promising system concepts. Systems are included here for DHW, and for combined DHW and space heating designed for solar heat coverages between 30% and 80% of the annual heat requirement.In the named plan, the state of the art and the R&D needs are described with the focus upon residential heating . Included are systems for multi -family houses, incorporatin groof-integrated solar collectors and short-term heat storage. More developed construction and urban planning methods for roof integration is stressed here, as well as systems flexible for size expansion, e.g. throug connection to an external seasonal heat storage.Also included are district heating systems for solar heat supply of upto a couple of hundred flats . Ground or roof based collectors and seasonal heat storage in water-filled pits or ducts in deep ground are considered here . Emphasis is placed on more efficient high temperature flatplate collectors, more simple piping systems and further development of heat insulation and water-sealing methods for pit storage as well as high temperature practical tests for duct storage.
|
|
| 10. |
|
|
