|The Ground Hog: Air Source / Ground Source Geothermal Heat Pump
The heat pump that addresses all your fears
about ground source and air source heat pumps
Yes it's finally here. The Groundhog is our new geothermal heat pump combines air source and ground technology to produce
a superior geothermal/air source combination heat pump system.
What are the advantages of an air source/ground source geothermal heat pump system?
efficiency. Air source heat pumps are often more efficient in less extreme weather. The endless supply of free flowing outdoor air can provide a great source of convection for
longer run times without the thermal depletion of the earth field that can occur with geothermal units. Ground source systems are often more efficient in extreme weather
conditions. The constant and more stable ground temperatures can provide an efficient source of convection as long as the earth field is not over worked. The ability to
utilize both sources gives the Groundhog a unique advantage to achieve comfort and efficiency.
- Lower installation cost = Lower geothermal heat pump cost. The
Groundhog’s multisource technology requires less drilling to obtain the same BTUH as conventional geothermal systems.
- Faster installation time. Less drilling is
less time consuming, and better still, the Groundhog can function without being attached to the earth field which is ideal when a nonfunctioning system needs to be replaced
quickly. The earth field can be installed at a later date, and the homeowner can start enjoying the comfort as quickly as with a typical air source system installation.
- Less threat of a total system failure. In the rare event of a ground loop failure, the Groundhog can still produce adequate heating and cooling.
efficient dehumidification. The Groundhog system uses a multi-speed compressor, as well as a variable speed fan motor to remove more unwanted humidity in the cooling mode.
- Better balanced heat control. The Groundhog air handler is equipped with MaximizerTM technology which measures the temperature rise at the indoor coil.
This allows the system to determine the correct compressor and heat stage mode for the best balance of comfort and efficiency.
Groundhog water heating options
Atlas offers an optional desuperheater which is a secondary heat exchanger that transfers heat
from the Groundhog into your domestic hot water tank. The device provides supplemental hot water whenever the Groundhog is heating or cooling your home. The hot water
circulator pump moves the cold water from the bottom of your hot water tank through a water pipe to the desuperheater itself. The water is then heated and sent back into to
your hot water tank.
Heating water with a Groundhog can save up to 30 percent less in a heating dominated climate, and up to 75 percent less in a cooling dominated
climate compared to a typical electric, oil, or propane fired hot water heater. At the present cost of natural gas the savings is about 10 percent less.
In the summer
heating your domestic water is almost free. This is because the heat that is being removed from your home is transferred into your hot water tank. Since most of this heat is
being sent back into the earth anyway, putting it into your hot water tank instead is free. The only cost for the summer water heating is the small cost of running the
circulator pump that moves the water. Another added bonus is that heating the water helps cool the refrigerant. This allows the compressor to use less electricity which
usually off sets the cost of running the circulator pump.
INDUSTRY COMPARATIVE ANALYSIS OF GROUND HOG TRIPLE SOLAR SOURCE
HEAT PUMP TECHNOLOGY VERSUS GROUND SOURCE GEOTHERMAL & AIR SOURCE HEAT PUMP
- The Ground Hog solar heat pump uses all three natural, and free
solar energy resources available in its proprietary operation cycle. These
solar energy resources consist in use of intense solar energy beamed directly
to a refrigerant charged solar collector panel, free flowing outside ambient
air temperature elements, and stabile, constant earth stored temperature.
- By combining all three of these solar resources into one
proprietary system product, the Ground Hog triple solar source heat pump
technology accomplishes maximum efficiency performance using less electricity
to operate the compressor, and supplemental auxiliary heat. This engineering
innovation is accomplished through constant modulation of the closed circuit
refrigerant management cycle. In this process, solar generated heat energy is
used to immediately increase the refrigerant pressure, and temperature sent
directly to the condenser thereby radically reducing the compressors energy
consumption, and operating load.
- The air, and ground source geothermal heat pump technologies
rely solely on use of one solar energy resource in their operating cycle, and
function with temperature sensing thermostat control without regard to
increased performance benefits gained using refrigerant modulation principles.
This poses fundamental limitations in operating efficiency, and creates questionable
investment cost appreciation for the end user consumer whose primary goal is to
achieve stellar operation efficiency performance, coupled with minimal
investment cost. Furthermore, both technologies are restricted, governed by
prevailing earth or air temperatures in delivery of their operating
performance, and must be engineered to achieve maximum efficiency performance.
It is commonly known throughout the HVAC industry that reliance on either of
these solar resources alone cannot assure peak, and complete operating
performance without using excessive amounts of supplemental auxiliary heat, or
in the case of geothermal energy systems, incur substantial earth drilling,
excavation, or engineering design investment costs to assure maximum operating performance.
- The Ground Hog triple solar source heat pump provides a more
cost efficient solution in addressing these industry wide deficiencies, and
uses an expanded solar energy approach to achieve superior performance. To
begin, It operates using one high efficiency rated two stage, variable speed or
multi stage outdoor air source compressor unit connected to one solar panel of
4 X 8 or 4 X 6 foot design weighing less than 200 pounds, and one single closed
earth loop consisting of 25 % total length of the outdoor condenser coil
(customarily 50 feet in length) installed in the earth either vertically or
horizontally. The three solar source components are to create our proprietary modulating
refrigerant management circuit. The kwh power
equivalent yield generated by the sole solar panel is rated up to 10.6 kwh or
90,000 BTU output performance as compared to a traditional HVAC systems. This
then accounts for a major increase of BTU gain in the overall system
performance capability. The earth loop connection increases, and boosts the
systems operating performance by constant use of geothermal earth heat
extraction or heat rejection principles. Using the earth as our heat sink also
enables the Ground Hog solar system to provide pre-heated water generated during operation run
cycles through its desuperheater component additive.
The integrated, proprietary air source outdoor compressor unit operates
constantly regardless of outdoor ambient air temperature swing. This function
enables full collection, and use of all available free flowing solar air heat
elements while managing the critical refrigerant cycle flow distribution
between the solar collector panel, and the geothermal earth loop.
- The Ground Hog solar heat pump system includes a proprietary
variable speed air handler with proportionately sized kwh
heat element capacity, and its patented delta control. However, as a contractor
courtesy, industry alternative variable speed or high efficiency air handler
products can be substituted, and installed with our solar heat pump. In this
case, the standard manufacturer supplied supplemental heat kit operating
efficiency can also be enhanced by installing our patented Heat Pump
Maximizer delta control (www.heatpumpmaximizer.com ).
This patented, time control technology incorporates a temperature comparing
relay to determine the exact amount of heat produced by the outdoor unit,
measured against the delta T air temperature differential between indoor room
air entering, and leaving the air handler evaporator coil. This unique, precise means of temperature
differential calculation, and regulation eliminates excessive outdoor unit run
time, reduces auxiliary heat short cycling resulting in more operating cost
efficiency, and a warmer home.
- The Ground Hog solar hybrid heat pump is equipped with
isolation valves to isolate connections to the earth loop or solar panel, and
is delivered pre-charged with refrigerant. This has been done to position our
system as a true hybrid triple source solar heat pump available for immediate
sale as a rescue, restore to service product for the replacement or retrofit
markets. This engineering implementation also provides the selling contractor
flexible installation scheduling of the solar collector or earth loop
components, and facilitates future service maintenance ease.
- The Ground Hog solar heat pump system is an Energy Star
accredited technology that has an important cost recovery advantage beyond
operating efficiency, and overall cost containment in comparison with air
source or geothermal ground source heat pump technologies. This advantage is
significant in monetary financial reward consideration as legislated, and
approved under current federal tax code. The current approved solar energy
federal tax credit is equal to 30 % of the project equipment expenditure with
no maximum credit limitation for eligible solar property used to heat, cool or
provide hot water for use in a building structure. The 30 % tax credit expires
on 12/31/2019. Thereafter it reduces down to 26 % through 12/31/2020, 22 %
through 12/31/2021, and 10 % through January 1st 2022 and forward. There may be
other local state or municipality financial leverage or eligible incentives
available in your area. Please reference the www.dsireusa.org published web
site data base regarding these solar technology inspired opportunities.