Bowman Geothermal Services
Design and Analysis
Bowman Geothermal's staff of licensed geologists and engineers provide a variety of evaluation efforts that are site specific to the requirements of any given project. Analyses of geologic conditions and associated depth affect drilling strategies and have significant design implications that need to be considered in order to develop an efficient and economical design. Whether it is thermal conductivity testing or bedrock analysis, Bowman Geothermal will develop the appropriate data necessary to create a high performing and sustainable geothermal system. Other constraints such as heat load/demand and physical restrictions can directly impact how many wells are developed and how deep they may need to be drilled, and these factors are considered in our design of the system.
Geothermal Feasibility
The Staff of Bowman Geothermal is well experienced in performing geothermal Feasibility Studies for all types of projects in all geographies. These studies identify and review geothermal loop types based on the particular application and site's physical and geologic constraints. Loop types that may be considered include vertical or horizontal closed loops, open loops, standing water column wells, and pond loops. The studies that the Bowman Geothermal team performs also include economic feasibility based on a preliminary loop design and design alternatives, when appropriate.
Thermal Conductivity Testing
Bowman Geothermal uses our in house developed, proprietary testing equipment to perform in-Situ Conductivity and Borehole Performance Testing. These tests typically involve conducting a 36 hour minimum Formation Conductivity Test in conformance with ASHRAE guidelines. In addition, Bowman Geothermal's staff determines the borehole's effective thermal resistivity. The effective thermal resistivity includes the effect of ground water convection which frequently enhances the well's ability to transfer heat to the ground. This effect can significantly reduce the loop size and drilling cost.
Drilling
Whether drilling into mud or rock to install vertical geothermal systems, the depth required and the materials encountered are monitored. The Bowman Geothermal team of professionals is on site to manage all operations and ensure design intentions are met.
Loop Installation
The staff of Bowman Geothermal is certified by the IGSHPA (International Ground Source Heat Pump Association). These professionals connect developed wells in a network of pipes, valves, and manifolds to assemble the geothermal loop system. Fusion efforts are inspected and tested throughout installation, and coordinated on site with the other activities typically being performed concurrently. Ultimately, penetration into the structure and connection to the flow centers and water furnace system is provided in concert with the mechanical contractor's efforts. Insulation of piping materials and custom installation within these structures is also performed by Bowman Geothermal professionals in order to complete the overall loop installation task.
Construction Management
Bowman Geothermal is involved from start to finish. Design, drilling, loop installation, and connection to the internal pump and water furnace are supervised by the design team. Field adjustments, flushing and charging of loops, and tie-in coordination with the HVAC contractor are all part of the Bowman Geothermal team's responsibilities.
Who We Serve
Bowman Geothermal clients currently include:
- federal government
- private homeowners
- K-12 schools
- commercial centers
- big box retail
- municipalities
