1 / 7

Cooling Update ( 27 March 2014)

Cooling Update ( 27 March 2014). Rob van Weelderen, Cryogenic Group, Technology Department, CERN. Overview. Fluka Heat Loads + Explicit Design Margins 1.9 K Heat load limits for IT with – d ouble HX in Q1 to Q3 + intermediate pumping

ling
Download Presentation

Cooling Update ( 27 March 2014)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Cooling Update(27 March 2014) Rob van Weelderen, Cryogenic Group, Technology Department, CERN

  2. Overview Fluka Heat Loads + Explicit Design Margins 1.9 K Heat load limits for IT with – double HX in Q1 to Q3 + intermediate pumping 1.9 K Heat load limits for D1 – CP with –single HX and with/without intermediate pumping Beamscreen cooling

  3. Placing of cryo-equipment considered (variant 4) Additional low pressure pumping ? actively cooled: 2 x HX actively cooled: 1 x HX ? • Phase-separator & • Piping entries/exits • Phase-separator & • Piping entries/exits • QRL-jumper • SM & • QRL-jumper • Phase-separator • Piping entries/exits Q1,Q2a,Q2b,Q3: actively cooled for about 41 m, double-HXs needed CP,D1 : actively cooled for about 16 m, single-HXs desired

  4. D1 & IT: Fluka heat loads However these values have to be augmented due to additional loads  Courtesy L. S. ESPOSITO

  5. D1 & IT: Fluka + additional heat loads Q1-Q2A ~ 247 W, Q2B-Q1B ~ 322 W, D1+CP ~ 202 W, Beam screens ~ 633 W Image currents 0.5 W/m on BS (tbc) What will be our design choice? Propose + 20 % margin: ~ 925 W at 1.9 K, ~ 759 W at BS

  6. Minimal need (569 W) Practical T-regulation limit, (800 W) Hard limit, HX overflowing (1000 W)

  7. D1 + CP (~14.9 m long) needed 202 W without contingency - Limited by vapour velocity (green is ok) - No good regulation possible/HX-area (red, forbidden) Using a full length double HX: 250 W at 2x49 mm ID, 2x58 mm Yoke-holes Using a full length single HX : 125 W at 1x49 mm ID, 1x58 mm Yoke-hole Not enough! - Intermediate pumping between CP and D1 and with single HX, limited by HX-area

More Related