US Navy, Ground Source Heat Pumps for Bachelor Enlisted Quarters 1001 & 1044

  • Location

    Naval Base Kitsap, Bremerton, WA
  • Project Dates

    October 2012 – November 2014
  • Delivery Method

    Design-Build
  • Market

    Federal
  • Awards

    ACEC Washington, Silver for Future Value to the Engineering Profession, 2016
    SAME Seattle Post, Gold for Projects of Excellence, 2015
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  • Solution

    Smart design harnesses geothermal energy for building heating and cooling

  • Project Overview

    The US Navy’s commitment to innovative building technologies and energy savings resulted in the installation of the first ground source heat pump(GSHP) systems at Naval Base Kitsap (NBK). GSHPs provide highly efficient building heating and cooling derived from the renewable resource of heat exchange with the earth. The buildings served by these heat pumps are Bachelor Enlisted Quarters (BEQs), providing housing for sailors.

  • Solution

    The Ground Source Heat Pumps provide a 26.9% reduction in energy consumption based on the Trane Trace and Ground Loop Design energy models. The project provided a number of challenges for the design and construction team including:

    • Fine-tuning digital controls integrating the GSHP systems with the existing steam system and coordinating heating and cooling based on 80+ control points in each building; and
    • Numerous existing conditions requiring creative solutions to limit budget and schedule impacts./

    Both facilities are ~20% below the industry median EUI of 77 for dorm type buildings in the Pacific Northwest. BEQ 1001 has a post-project EUI of 61.2 - a 36.4% energy consumption improvement. BEQ 1044 achieved an energy consumption improvement of 15% with a post-project EUI of 64.2. Additional renovations, including energy and water-saving features, in BEQ 1001 brought the living quarters up to new Naval Bachelor Housing standards.