Home
Survey and analysis serviceIn order to establish Geothermal Heat Pump system suitable for Japanese, Mitsubishi Materials Techno has been actively working on technology development since 2000.
At the beginning of technical development of Geothermal Heat Pump system, we started the joint research with Department of Earth Science and Technology, Faculty of Engineering and Resource Science, Akita University in order to develop the basic technology for evaluating the most important heat exchange rates in 2000~2002. This joint research was backed up by Akita industry-university joint research auxiliary program.
In the course of basic technology development, we installed ground heat exchangers and built an observation system in Akita University. Then, we established a basic simulation model related to geothermal exchange, such as the developments of monitoring technology and analysis technology.
After that we extended the test field. We repeated applied tests based on the basic technology in Rokugo-machi (now Misato-machi) in Akita, Hirosaki-shi in Aomori, and Nishimeya-mura in Aomori, and then we proved the validity of a thermal response testing technology utilizing a geothermal exchange well and a simulation technology of a geothermal exchange well. As a result, we could successfully reach to practical use of this technology.
| The results of main research and development | |
|---|---|
| 1. | Establishing methods of a thermal response test and analyzing methods for estimating physical properties of underground heat source. |
| 2. | Construction of an analytical simulation model in a vertical heat exchangers with U- tubes |
| 3. | Establishment of manual of the optimum design for a geothermal heat pump system by analysis of simulation model (in progress) |
| 4. | Development of filler materials of ground heat exchanger with high conductivity of ground heat (bentonite-added silica sand aggregate mortar) |
| 5. | Assessment of an influence to heat exchange rates by the difference of filling materials of a ground heat exchanger (including unfilled materials), and establishing its selection technique (in progress) |
| 6. | Consideration of an optimum designing condition by constructing model of geothermal heat pump snow-melting system |
| 7. | Practical application of a hybrid system of general electric power auxiliary heat source and geothermal heat pump system (monitoring is continuing) |
| 8. | Development of geothermal heat pump unit for snow-melting (small type for sidewalk) |
