Appendix D

Description of Three Existing Projects 360 Court Street, Brooklyn Description This building was originally a church in the gothic style built in 1890. The 1980 conversion to residential use was accomplished by adding a floor in the nave and apse. A total of 34 apartments were fitted into the original volume. The lower floor (basement) of the Church is above grade on the south side, and this space was converted to professional and mechanical space. The first floor of the nave was converted to...

Accepted by WEDI

The GeoExchange space conditioning system provides Heating Air or Heating Water Cooling Air or Chilling Water Heating Domestic or Process Water A typical installation will provide 100 of the dominant heating or cooling load and approximately 50 - 65 of the domestic water heating. In all cases the successful installation will include a complete integration of all of the three major components of the GeoExchange installation. Earth Coupling Portion Heat Pumps Building Distribution Table 8c-2 -...

Table c Factors Other than Operation in Cost Analysis

Maintenance Cost Factors are discussed in section 9 and show savings in the 30 to 50 range. These savings have been measured and quantified and are not simulated estimates. Full System Cost Factors often are difficult to compare. Note the Geother-mal heat pump ratings both the old ARI and the recently adopted ISO efficiency rating all included the full system level operational costs. Coefficient of Performance (COP) represents these factors. COP being the ratio of the purchased energy to the...

A The Hydrogeology of New York City

The geology of the New York City counties is complex and varied. Geologic formations range from Precambrian bedrock the age of which can be measured in billions of years to glacial deposits that are less than twelve thousand years old to land filled areas that were created in the recent past. The stratigraphy of geologic units tends to be ordered with the younger formations resting on top of older formations. The oldest formations, the crystalline bedrock, such as granites and gneisses, form...

Fresh Air Intake Rooftop Unit

Hvac Rooftop Unit Economizer

Section 8.0 Choosing a Geothermal Heat Pump System The type of geothermal heat pump system that is suitable for a given building must be chosen carefully. The normal process is a collaborative effort involving the owner, the architect and the consulting engineer. Each different geothermal heat pump configuration will affect the architecture and the ability to define climate control zoning. At present the commercially available heat pump types and the major physical implications for the building...

Closed Loop Geothermal Heat Exchangers

Water Drilling Machine Diagram

Close loop earth coupling is used in areas where the installation is simple or there are issues with the permitted use of ground water aquifers reserved by governing bodies , lack of water or with the water quality. This type of geothermal heat exchanger consists of closed loops of plastic piping. As closed loop piping and the required grouting material add another layer of heat transfer resistance, the closed loop system is designed for lower winter entering water temperatures and higher...

Most Likely Geo Exchange Earth Coupling Methods by AREA

A third, or closed loop, earth coupling method has been used in areas where there are regulatory or practical reasons that find the above two methods unpractical. At present there are no regulations affecting the closed loop earth coupling. Some close loop designs included pathogenic poisons as antifreezes and the design engineer and owner should carefully evaluate the chemical composition of closed loop antifreeze compounds before giving their approval for their use. This section summarizes...

Typical Requirement for Uic Permit Applications

Permit applications for a Class V Bore hole include A. Review within mile of the site B. Topographic map within 1 mile radius of the site C. Well data reasonably available from public records D. E. Geologic maps of the immediate area - available from USGS amp this document F. Operating data for the heat pumps G. H. I. Simulation of Heat pump operation including estimated injection J. K. Description of Boring construction procedures and details L. Description of proposed monitoring program N....

Conclusion

Geothermal Slinky Loop Design

The hydrogeology of the City of New York is complex and varied presenting an interesting challenge for the design and implementation of geothermal systems. Since the location of the intended system is critical in determining the nature of the geology and, consequently, the type of well that will be used for the system, the designer must consult the mapping that is in this chapter or additional mapping listed at the end of the chapter. It is important that a hydrogeologist is consulted at the...

Open System with Supply and Diffusion Wells

The open type of geothermal heat exchanger consists of one or more supply wells which supply water to the heat pump loop, and return or diffusion wells into which the same water is re-injected into the aquifer from which it was drawn. These wells are relatively shallow several hundred feet in depth , and are generally cased to the depth where the water is available for pumping, or in the case of a diffusion well, can be accepted by the geologic formation. Aquifers that can furnish water at high...

Standing Column Wells SCW

Standing column wells consist of a borehole that is cased until competent bedrock is reached. The New York State Department of Mineral Resources DMR requires that the well casing be driven 75 feet into competent bedrock. Upon indication of solid and unfrac-tured rock the DMR has agreed upon a reduction of that depth to as low as 35 feet. The remaining depth of the well is then self-supporting through bedrock. A central pipe is dropped to form a core through which the water is pumped up, and an...