Title:
採放熱管およびそれを用いた地中熱ヒートポンプ
Document Type and Number:
Japanese Patent JP7124263
Kind Code:
B2
Abstract:
To more improve heat collecting and radiating effect in a heat collecting and radiating tube of a direct expansion type geothermal heat pump causing refrigerant phase change.SOLUTION: A heat collecting and radiating tube of the present invention is a heat collecting and radiating tube for a direct expansion type geothermal heat pump which is housed in a casing pipe buried in the ground. The heat collecting and radiating tube comprises: a main pipe; and an adiabatic material covering a part of the main pipe. The main pipe comprises: first and second outflow/inflow ports for inflow or outflow of refrigerant; a first pipe from the first outflow/inflow port to the end; and a second pipe from the second outflow/inflow port to the end. The first pipe and the second pipe are connected to communicate with each other at the end, the first and second outflow/inflow ports are provided on the ground surface side of the casing pipe. The ends of the first pipe and the second pipe are located at a deepest position in the heat collecting and radiating tube when the casing pipe is buried, the first pipe is covered with the adiabatic material l at least to the end thereof.SELECTED DRAWING: Figure 1
Inventors:
Tetsuaki Takeda
Application Number:
JP2018013384A
Publication Date:
August 24, 2022
Filing Date:
January 30, 2018
Export Citation:
Assignee:
Yamanashi University
International Classes:
F25B30/06; F24T10/15; F28D7/06; F28D21/00
Domestic Patent References:
| JP2009092350A | ||||
| JP2017067419A | ||||
| JP10300266A | ||||
| JP2012083021A |
Foreign References:
| US7578140 | ||||
| US20150316296 | ||||
| US20040129408 | ||||
| US20040206103 | ||||
| US20090272137 |