CONCENTRIC TUBE HEAT EXCHANGER TEST SETUP AT CRYOLAB

CONCENTRIC TUBE HEAT EXCHANGER TEST SETUP AT CRYOLAB CO 2 FORCMS T RACKER WEEK MEETING. Theodoros Katopodis PH-CMX

CTHX PIPE TESTSCO 2 FORCMS T RACKER WEEK MEETING CTHX theoretical considerations. B. Cryolab’s restrictions and interior design. Designing approach by using Catia. i. 3 D models. ii. 2 D models B. CTHX construction procedure. i. Welding/Bending/Insulation at Gasgroup. ii. Transportation at Cryolab. iii. Insulation. CTHX insulation. D. CTHX installation. E. Future tasks. Theodoros Katopodis PH-CMX A. 5/13/2013 A. 2

CTHX PIPE TESTSCO 2 FORCMS T RACKER WEEK MEETING CTHX theoretical considerations. Heat is a form of energy that flows due to difference in temperature between two points that are located within a medium or in two different media. The transfer of heat occurs via one or any combination of the three modes of heat transfer - conduction, convection and radiation. Similarly, the rate of heat transfer can be described by the following equations: Theodoros Katopodis PH-CMX The concentric tube heat exchanger consists of two tubes that are concentrically arranged. One of the fluid (either hot or cold fluid) flows through the tube and the other through the annulus. 5/13/2013 v. The new CTHX is made of stainless steel in a two layers of insulation, trying to improve the system performance, reaching stable conditions : Tsupply=-40°C and Treturn=-20°C. v The CTHX will be tested at Cryolab (connected from the one side (cooling plant) directly to the other (four Loops mockup of Joao’s tests). 3 A simplified representation of heat transfer between two fluids through the walls of a CTHX.

CTHX PIPE TESTSCO 2 FORCMS T RACKER WEEK MEETING Cryolab’s restrictions and interior design. No space at all!! 5/13/2013 Theodoros Katopodis PH-CMX 4 Cryolab building 158 view before the removal of the scaffolding.

CTHX PIPE TESTSCO 2 FORCMS T RACKER WEEK MEETING Cryolab’s restrictions and interior design. 5/13/2013 Theodoros Katopodis PH-CMX 5 The most candidate place where we could install the concentric tube pipes.

CTHX PIPE TESTSCO 2 FORCMS T RACKER WEEK MEETING 5/13/2013 Theodoros Katopodis PH-CMX Cooling Box (CMS 4 Layer mockup) Vertical Path 4 m Cryolab’s restrictions and interior design. 5 m ath P tal on z ori H Cooling Plant 6 Cryolab building 158 view after the removal of the scaffolding.

CTHX PIPE TESTSCO 2 FORCMS T RACKER WEEK MEETING 3 D models The plan is to represent in a 3 D simple drawing model the room space of Cryolab more or less precisely. 5/13/2013 Theodoros Katopodis PH-CMX 3 D_The CTHX. 3 D_Cryolab room place. 7 3 D_Assembly connection between Cooling plant and CTHX. 3 D_The CTHX view.

CTHX PIPE TESTSCO 2 FORCMS T RACKER WEEK MEETING 2 D models 5/13/2013 Theodoros Katopodis PH-CMX 2 D_Views of the CTHX. 2 D_ISO view of the CTHX. o Concentric Stainless Steel Tube i. Inside Tube ID=4 mm and OD=6 mm. ii. Outside Tube ID=10 mm and OD=12 mm. o Armaflex Insulation i. First Layer ID=12 mm and OD=35 mm. ii. Second layer ID=35 mm and OD=100 mm. 2 D_Assembly connection between Cooling plant and CTHX. 8

CTHX PIPE TESTSCO 2 FORCMS T RACKER WEEK MEETING CTHX construction procedure. q Tubes arrived at CERN in bunches of 6 m. i. ID= 4 mm and OD= 6 mm (3 x 6 m). ii. ID= 10 mm and OD= 12 mm (3 x 6 m). Construction process ü Welding process (by using the orbital welding-a specialized area of welding whereby the arc is rotated mechanically through 360° around a static work piece, an object such as a pipe, in a continuous process). ü Small tube is placed inside the big. ü Cross unions tees were installed to the marked points (where it is supposed to be located the PPT). ü Subsequently the two tubes bended together ( by using the hand tube bender to different 6 points following a bend radius of 38 °). ü Before the transportation the CTHX was insulated (by using the thin insulation of ID=12 mm and OD=35 mm). ü Afterwards the 18 m CTHX transported at Cryolab, in order to be adjusted on the correct position. ü Holes opened on the wall (for the vertical path). ü Supporting brackets fixed on the wall, holding stable the CTHX to the horizontal path. ü Insulate the CTHX with the second layer of Armaflex ID=35 mm and thickness of 32 mm. ü Pressure transmitters installed. 5/13/2013 q Theodoros Katopodis PH-CMX 9

CTHX PIPE TESTSCO 2 FORCMS T RACKER WEEK MEETING CTHX transportation from Gasgroup workshop to Cryolab 5/13/2013 Theodoros Katopodis PH-CMX During the construction at Gasgroup. Installing at Cryolab. Insulating with the first layer. 10

CTHX PIPE TESTSCO 2 FORCMS T RACKER WEEK MEETING CTHX insulation. 5/13/2013 Theodoros Katopodis PH-CMX Awaiting for the glue to dry out. During the insulation procedure. q. Insulating with the second thick layer. q. Drilling holes, fixing supports and placing the CTHX. 11

CTHX PIPE TESTSCO 2 FORCMS T RACKER WEEK MEETING CTHX installation. PTT_01 Wall mounting brackets x 3, holding the CTHX on the horizontal path. Theodoros Katopodis PH-CMX PTT_02 5/13/2013 Collier support Armafix ø 42/45 K avec collier support. CTHX connection cooling plant. CTHX connection to four loops mockup. 12

CTHX PIPE TESTSCO 2 FORCMS T RACKER WEEK MEETING CTHX installation. 5/13/2013 Theodoros Katopodis PH-CMX 13 Horizontal path view.

CTHX PIPE TESTSCO 2 FORCMS T RACKER WEEK MEETING CTHX installation. 5/13/2013 Theodoros Katopodis PH-CMX Cooling plant to CTXH connection. Still needs to be insulated. CTHX view 14 CTXH to cooling box connection. Still needs to be insulated. .

CTHX PIPE TESTSCO 2 FORCMS T RACKER WEEK MEETING Future tasks. B. Fix the PTT_02. C. All the connections should be well done tightened. D. A possible pressure test. E. Calculations about the CTHX performance. F. Comparison to future measurements. Theodoros Katopodis PH-CMX Insulate the CTHX assembly connections (cooling plant, box). 5/13/2013 A. Acknowledgements Many thanks to Joao and Abdel. 15

CTHX PIPE TESTSCO 2 FORCMS T RACKER WEEK MEETING 12/20/2012 Theodoros Katopodis PH-CMX 16