(19)
(11)EP 3 623 723 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
17.06.2020 Bulletin 2020/25

(43)Date of publication A2:
18.03.2020 Bulletin 2020/12

(21)Application number: 19196678.7

(22)Date of filing:  11.09.2019
(51)International Patent Classification (IPC): 
F24T 10/15(2018.01)
B26D 3/16(2006.01)
B23D 21/14(2006.01)
B26D 5/02(2006.01)
F03G 7/04(2006.01)
F24T 10/00(2018.01)
E21B 29/00(2006.01)
B26D 1/30(2006.01)
F24T 10/40(2018.01)
F03G 7/00(2006.01)
(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30)Priority: 14.09.2018 US 201816131156

(71)Applicant: Geosource Energy Inc.
Calendonia N3W 2G9 (CA)

(72)Inventor:
  • Reitsma, Stanley
    Caledonia, N3W 2G9 (CA)

(74)Representative: Patentanwälte Bauer Vorberg Kayser 
Partnerschaft mbB Goltsteinstraße 87
50968 Köln
50968 Köln (DE)

  


(54)METHOD AND APPARATUS FOR INSTALLING GEOTHERMAL HEAT EXCHANGER


(57) A borehole is bored to a borehole target depth in a site and a geothermal heat exchanger is inserted into and then secured in the borehole at the desired depth. Once the heat exchanger has been secured in the borehole, the heat exchanger has a closed distal end and an open proximal end and has at least one fluid path between the closed distal end and the open proximal end, with installation fluid disposed in the fluid path(s). After securing the heat exchanger in the borehole and before excavation of a portion of the site immediately surrounding the borehole, the heat exchanger is temporarily sealed by installing, through the open proximal end, at least one respective internal seal in each fluid path. For each fluid path, the internal seal(s) will be disposed below a respective notional subgrade depth and excavation of the site immediately surrounding the borehole can proceed.














































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Search report