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Use of Geothermal Energy for Deicing Approach Pavement Slabs and Bridge Decks: Phase II Extension
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2024-12-01
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[PDF-1.34 MB]
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Alternative Title:Pilot-Geothermal Bridge Deicing System Operation Manual [Project title from cover]
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Abstract:The objective of the control system is to run the deicing system efficiently and effectively under different winter weather conditions. The system can be operated for bridge deicing in heat pump or bypass mode. The heat pump mode involves all four heat pumps and the GLHE during bridge deicing, while the bypass mode only relies on GLHE to heat the bridge. The original control design was one Tekmar 670 as the control module to automatically control all heat pump and water pump units. However, the implementation of Tekmar 670 was delayed. Instead, an alternative control using four Tekmar 519 was implemented for snow-melting operations in the winter of 2023. In this alternative control, each heat pump was controlled by one Tekmar 519 directly. The drawback of this alternative is that the system is operated manually. This operational manual outlines the control system for the pilot bridge deicing system using Tekmar 519, including the control module, control algorithm, and operation procedure.
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