geothermal design software
GEO® Hourly
Sign In

   Definitive Design software for Geothermal Systems


GEO®Hourly Advantages:
  • Unique Zone Hourly Analysis
  • Realistic Heat Pump Operation
  • Proper Size Zone Heat Pumps
  • Energy Model - Zones
  • Intelligent Triple Hourly Zone Analysis
  • Lower the First Cost
  • Easy Analysis Optimization
  • Hybrid Design Integration
  • Patents No. 9,443,043 and No.9,852,243

How Geothermal Systems Work

 ◦  In a definitive design software for geothermal systems a geothermal heat pump system transfers the buildings Btu heat needed to keep occupants comfortable by utilizing heat pump equipment connected to a ground heat exchanger.

 ◦  Following the sequence:
        • The amount of building zone heat Btu's being transferred is determined by a Btu load analysis methods for residential buildings known as a Manual J and commercial buildings following ASHRAE methods.
        • The heat pump equipment transfers the building Btu's for heating and cooling to a ground heat exchanger.
        • The ground heat exchanger being in contact with the earth receives or supplies the Btu heat between the building and the earth.

 ◦  Geothermal Heat Pump equipment (Ground Source Heat Pumps) refer to a class of HVAC equipment that utilizes water to cool and heat the refrigerant instead of air. The water (fluid) in a Geothermal Heat Pump is circulated in a closed loop heat exchanger located in the earth where the earth's temperature at 28 feet below the surface is constant all year and doesn't fluctuate to extremes like the air temperatures above the surface. A heat pump compressor inside the unit moves refrigerant inside the building coils to exchange heat from the compressor to the circulating water to and from the earth. Ground Source Heat Pumps have a much higher energy efficiency than equipment using air. GEO®Hourly designs the in-ground heat exchanger to the proper size to accommodate the design building loads for heating and cooling.

 ◦  The earth acts like a battery of Btu heat, and GEO®Hourly runs the heat pump in each zone at each operating stage just as the heat pump would operate in a real bluilding environment. This method of simulating the detailed hourly heat pump operation provides a relistic mirror of the heat transfer of Btu's into and out of the ground. The Heat Pump equipment you select has a substantial impact in the design of the in-ground heat exchanger length and the operating cost of the buildings heating and cooling system. GEO®Hourly can model sinlgle, dual, and variable capacity equipment and has a complete library of Heat Pumps with corrected performance data to match your building environment.

 ◦  In a ground heat exchanger closed loop a continuous circuit of HDPE pipe is connect together with pipe that is inserted into boreholes arranged in a grid fashion in the earth. During summer water is circulated in this pipe loop and heat is transferred from the water inside the pipe into the ground. During winter heat from the earth is transferred to the water inside the pipe to the heat pump equipment that transfers heat inside the building.

 ◦  If well water is available to pump from the ground this water can be circulated directly into the heat pump equipment, and discharged back into another well or drainage area. This type of system is very dependent on the quality of the water and the local government regulations about discharging well water. This open system has been used for years where water is near the surface and abundant.