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M.D. Smith, Ph.D.,P.E. Randy Perry & Fred Schroeder

Smart Bridge Quarterly Progress Report #13 Task 4.2.1 - Further Refinements to GLHE Design Task 4.6.1 - Testing of a Medium-Scale Bridge Deck Heating System June 2002 - August 2002. M.D. Smith, Ph.D.,P.E. Randy Perry & Fred Schroeder. Task 4.2.1. Flat Plate Heat Exchanger System

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M.D. Smith, Ph.D.,P.E. Randy Perry & Fred Schroeder

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  1. Smart Bridge Quarterly Progress Report #13Task 4.2.1 - Further Refinements to GLHE DesignTask 4.6.1 - Testing of a Medium-Scale Bridge Deck Heating SystemJune 2002 - August 2002 M.D. Smith, Ph.D.,P.E. Randy Perry & Fred Schroeder

  2. Task 4.2.1 • Flat Plate Heat Exchanger System • Pond pump lost prime and vault temperature dropped to 33°F • Will add controls to prevent damage in case of repeat situation. • Five-Ton Slim Jim Pond Loop Installation • For performance Testing • Run in series with existing 5-ton pond loop

  3. Slim Jim HX Installation

  4. Task 4.6.1 • Smart Bridge Software Development • Graphical Portion Designed & Implemented • “Save” Thread has been completed • “Control” Thread completed on vault system • “Control” Thread for bridge heating to be completed. (Interface with new control valve software for diverting fluid—See Smart Bridge Simulation & Control)

  5. Task 4.6.1 • Smart Bridge Simulation & Control • Simulate Multi-Heat Pump System with the single Heat Pump • Install header to connect the pond loops in series or individual options (5-ton Slim Jim & 5-ton Copper Coils) • Control heat to the bridge by mixing with a “no dead head” valve. Mix returns from pond and heat pump.

  6. Manifold Under Bridge Deck To Deck Tee 3-way control To Pond From Heat Pump

  7. Task 4.6.1 • Smart Bridge System Modifications • All isolation valves, fittings and transitions have been ordered and received to accommodate the new controls system. • Valves and connections have been assembled and remaining assembly must be done in the field. • Moisture sensors to be re-bonded to the bridge deck and sealed on edges with NP1, a concrete sealant.

  8. Plans for Next Quarter: • Complete software “control” thread for the bridge heating, which includes the control valve software. • Finalize the programming to integrate the new control scheme developed by Dr. Whiteley and group. • Complete and operate the modified system and check out the data acquisition and controls to confirm the new software package. • Prepare for the potential snow or freezing precipitation by running mock tests of the total links.

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