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Project Spotlight: Pennswood Village - Geothermal Wellfield

Client: Pennswood Village, Newtown, PA
Geothermal Contractor: Morrison, Inc.; Duncannon, PA

One of many ongoing capital improvement projects at Pennswood Village in Newtown, PA is the installation of a 150 well / 450 ton capacity geothermal wellfield.

Designed by AEI's geothermal team, this geothermal system is one of AEI's most recent hybrid geothermal systems. The existing facility was served by two closed circuit coolers. Included in AEI's design was to re-use the existing 300 ton closed circuit cooler to meet this continuing care retirement communities' cooling dominated load.

This hybrid system also includes full bypass connections to the wellfield and closed circuit cooler. Pennswood Village will have the flexibility to operate this system in a variety of configurations based on interior building conditions and the outdoor air temperatures.

As this project enters the final stages of construction, Pennswood Village is in the early stages to begin the replacement of over 200 water source heat pumps throughout the main building with new high efficiency extended range water source heat pumps designed for use in geothermal systems.

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Sustainable Design Services

How We Can Strengthen Your Team

A commitment to sustainable design is an investment for the future that has tangible results for today. That is the conviction of Alderson Engineering and a philosophy we encourage our clients to embrace. Through a commitment to integrated design with all members of the design team, the benefits are far reaching, not only for the client, but for community.

Decades of sustainable design practices such as geothermal engineering, and our always expanding cutting edge software energy modeling allow AEI to be confident that we are giving our clients the most advanced engineering services.

We back these techniques with experience and a history of success. We are members of the Geothermal Heat Pump Consortium, have Certified Geo-Exchange Designers on staff, and members of the firm are also LEED® Accredited Professionals. Our sustainable designs have included geothermal heat pump systems, water and air heat recovery systems, photo-voltaics, hybrid natural/mechanical ventilation, radiant heating and cooling, thermal storage, energy efficient lighting control systems, grey water systems, cogeneration plants and alternate fuel chillers. We are trained to perform full building energy modeling utilizing HAP 4.3, GLHEPRO, Ground Loop Design, GCHPCALC, LitePro, and SKM Power Tools.

We have effectively supported our clients in the process of procuring rebates and incentives for energy efficient equipment and systems locally and nationally.

• Economic Benefits - A sustainable building provides several financial rewards for its owner(s). The most well known benefit is reduced utility cost. Additional benefits are increased employee productivity, less sick building days, and increased property value.

• Community Benefits - The community in which a LEED® certified building resides will benefit from the construction principles as designated by the USGBC. Reducing overall energy, water, and sewage use will limit strain on the existing utility infrastructure. Reduced new construction projects of power plants, transmission lines, and water and sewer systems keep living costs down for everyone in the community. The fostering of alternative means of transportation will alleviate traffic congestion and improve air quality.

• World Wide Benefits - The wide spread advantages of a LEED® certified building do not end in the community. Global effects are mexperienced through reduced emissions of greenhouse gases and mozone depleting refrigerants such as CO2 and CFCs. Reusing materials and using materials with recycled content preserves limited resources.

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