By Steve Kavanaugh, Kevin Rafferty
"Best practices for designing nonresidential geothermal structures (ground-source warmth pump, closed-loop floor, groundwater, and surface-water structures) for HVAC layout engineers, design-build contractors, GSHP subcontractors, and energy/construction managers; contains supplemental Microsoft Excel macro-enabled spreadsheets for various GSHP calculations"--
summary: "Best practices for designing nonresidential geothermal platforms (ground-source warmth pump, closed-loop floor, groundwater, and surface-water platforms) for HVAC layout engineers, design-build contractors, GSHP subcontractors, and energy/construction managers; comprises supplemental Microsoft Excel macro-enabled spreadsheets for a number of GSHP calculations"
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Extra resources for Geothermal heating and cooling : design of ground-source heat pump systems
S. Kavanaugh. 2012. Long-term commercial GSHP performance, part 1: Project overview and loop circuit types. ASHRAE Journal 54(6). , M. Green, and K. Mescher. 2012. Long-term commercial GSHP performance, part 4: Installation costs. ASHRAE Journal 54(10). Rafferty, K. 1995. A capital cost comparison of commercial ground-source heat pump systems. ASHRAE Transactions 101(2). Remund, C. 2011. Ground Source Heat Pump Residential and Light Commercial Design and Installation Guide. Stillwater, OK: International Ground Source Heat Pump Association.
Correct EER and COP using the corrected net capacity divided by the corrected input power (heat pump, fan, and pump). This procedure requires a large amount of effort. xlsm, which is based on the eight-step manual heat pump performance calculation procedure, has been used to develop a time-saving (but less accurate) alternative. ) In the spreadsheet, multipliers are applied to the rated TC, EER, HC, and COP values to correct performance to conditions and constraints likely to occur in actual applications.
The net system cooling capacity is 557 tons (1960 kW). 36 hp/1000 cfm (ASHRAE 2010). 6 kW. 18. 0) chillers provide water to sixteen air-handling units (AHUs) ranging in capacity from 4000 to 40,000 cfm (1900 to 19,000 L/s). The AHUs are equipped with variable-speed fans and deliver air to a network of 230 fanpowered VAV terminals ranging in capacity from 800 to 1600 cfm (380 to 760 L/s). The system also includes eight 34,000 cfm (16 000 L/s) return air fans. Three sets of pumps provide flow to the ground loop, chilled water to the building, and flow through the chillers.