CommerCial | GeoTHermal TeCHNoloGY - FHP Manufacturing

Commercial | GEOTHERMAL TECHNOLOGY
Reinventing Energy Efficiency
www.fhp-mfg.com

FHP’s Geothermal And Water Source Systems
Our Heat Pump systems are the most energy and cost efficient systems on the market and therefore the greenest
technology and the smartest investment for commercial heating and cooling applications.
Geothermal Systems
As the cost of energy increases geothermal installations become the system of choice.
The earth has a tremendous capacity of storing thermal energy which can be utilized to heat or cool a building.
Although the initial cost of a geothermal application may be higher, if one considers the life cycle savings in energy
and the reduced maintenance cost then geothermal is the smartest decision for your project.
Geothermal systems are especially recommended in areas that have significant heating and cooling loads.
In areas that are either cooling or heating dominant our hybrid systems could be the perfect solution for your
needs. Using a cooling tower in conjunction with a ground loop in areas that have a cooling dominant load
reduces the cost of the loop field with only a small impact on the efficiency of the system. Conversely in areas
that are heating dominant the addition of a boiler to a geothermal loop reduces the loop field cost with a minimal
effect on the efficiency of the system.
Water Source Cooling Tower/Boiler Systems
A tower/boiler system offers as excellent alternative to a geothermal system where space is limited or initial costs
are a determinant factor.
The tower/boiler system consists of a cooling tower that will reject heat absorbed by the loop when the system
is predominantly in the cooling mode. The boilers function is to add heat to the loop when there is a net heating
demand. In many instances the heat generated by the units in cooling balance the heat loss in the loop for the units
in the heating mode. In this situation neither the tower nor boiler will operate as the system is self balancing.
Environmental stewardship is a core philosophy for FHP
Manufacturing from design to production to the reduction
in our customers’ energy bills. At FHP, we are working on a
better future every day.
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Advantages Of FHP’s Technology
Low Installation Costs
FHP water source heat pumps systems provide the most flexible and lowest installation costs of virtually any
HVAC system. In a typical installation the water loop remains above the dew point of the ambient air meaning no
insulation is required on piping, a major cost of any installation. To accomplish the same degree of flexibility as a
heat pump system a four pipe system is required. This represents another significant cost saving potential since
heat pumps installations only require a two pipe system for either heating or cooling.
Flexibility and Comfort
FHP units come in a wide variety of models, sizes and configurations. This provides the design engineer true
flexibility when designing the system. Should the occupancy of an area change the unit may be changed out for
the appropriate size without major modifications to the layout.
Energy Efficient
FHP units operate individually with high efficiency making the complete system extremely efficient. What makes
this system unique is the ability to transfer heat around the building in winter through the common water loop.
In today’s modern buildings, interior zones generally require cooling even in the winter because of the lighting,
occupancy and electronic loading. When cooling these areas heat is transferred to the water loop and utilized by
the units on the perimeter that may require heating. This is the only system with this capability and the net result
is a truly economical operating system. Individual units serve specific zones so that there is no need to operate
large units if there is only a small area calling for heating or cooling.
Redundancy
The building is not dependent on one or two large chillers. With multiple units serving individual zones should
one unit fail, only this area is affected. FHP units are designed for convenient, easy and fast service and do not
require specialized training to maintain or repair. Downtime should be minimal. Routine maintenance is limited
to filter replacement and an annual checkup making maintenance cost for water source heat pumps one of the
lowest of any system.
Space Savings
FHP horizontal units are designed to be as compact as possible. In a commercial application units are typically
located above a false ceiling meaning that large equipment rooms that would normally house large chillers or air
handlers are not required. This frees up space that can now be used for tenant occupancy generating additional
revenue throughout the life of the building.
Each FHP unit will have its own duct system to serve the specific zone. Large central plant ducting is not required
allowing for the possibility of reduced floor to floor height with a corresponding reduction in the mass and cost
of the building.
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Operation Modes Of A Heat Pump
Cooling Mode
Supply Water
From Thermal Source
Return Air
Thermal Expansion Valve
Water-To-Refrigerant
Heat Exchanger
Compressor
Blower
Hot Gas
Reversing
Valve
Air-To-Refrigerant
Heat Exchanger Coil
Return Water
To Thermal Source
Suction Line
In the COOLING mode, the refrigerant, a hot
gas, is pumped from the compressor to the
water-to-refrigerant heat exchanger via the
reversing valve.
Water, generally with an anti freeze, flowing
through the water-to-refrigerant heat exchanger
removes heat and the hot gas condenses into a
liquid. This liquid then flows through a metering
device to the air-to-refrigerant heat exchanger
coil. In evaporating into a gas, the liquid absorbs
heat and cools and dehumidifies the air that
passes over the coil surface. The cooling cycle is
completed when the refrigerant flows as a low
pressure gas through the reversing valve and
back to the suction side of the compressor.
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Operation Modes Of A Heat Pump
Heating Mode
Supply Water
From Thermal Source
Return Air
Thermal Expansion Valve
Water-To-Refrigerant
Heat Exchanger
Compressor
Blower
Hot Gas
Reversing
Valve
Air-To-Refrigerant
Heat Exchanger Coil
Return Water
To Thermal Source
Suction Line
During the HEATING mode, the refrigerant, a hot
gas, is pumped from the compressor to the air-torefrigerant
heat exchanger coil via the reversing
valve. In the air-to-refrigerant heat exchanger
coil, the heat is removed by the air that passes
over the coil surface, and the hot gas condenses
into a liquid. The air is circuited to the space and
provides heating for the building. The refrigerant
liquid then flows through a metering system to
the water-to-refrigerant heat exchanger. While it
evaporates into a gas, the liquid absorbs heat and
cools the water. The heating cycle is completed
when the refrigerant flows as a low pressure
gas through the reversing valve and back to the
suction side of the compressor.
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Earth Coupling Options
Geothermal systems use the earth as a heat source and heat sink. In order to transfer heat to or from the house
heat exchangers (ground loops) are installed in the ground. These consist of high density polyethylene plastic
pipes. The loops are then connected to the heat pump and fluid circulated between them transferring the heat
between the heat pump and the earth.
Vertical Ground
Loop System
Horizontal Ground
Loop System
Pond/Lake
Loop System
Well Water
System
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Vertical Ground Loop System
This type is used mainly in commercial buildings or where space is limited.
Vertical holes 100 to 400 feet deep are drilled in the ground, and a single loop of pipe with a U-tube at the
bottom is installed. The borehole is then sealed with grout to ensure good contact with the soil. The vertical
ground loops are then connected to a horizontal underground header pipe that carries fluid to the unit. The
Earth’s temperature is more stable farther below the surface which is an advantage for the system. Vertical
ground loop fields may be located under buildings or parking lots. The life expectancy is in excess of 50 years.
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Horizontal Ground Loop System
This type is cost effective on smaller projects or where there is sufficient space for the loop. Trenches, three
to six feet deep are dug in which a series of parallel plastic pipes are laid. These loops are manifolded and
connected to the heat pump. The fluid is then circulated absorbing or rejecting heat to the earth depending
on the mode of operation. A typical horizontal loop will be 400 to 600 feet long for each ton of heating and
cooling but will vary according to the soil type and the layout of the piping.
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Pond/Lake Loop System
This type of design is economical when a project is located near a body of water. Fluid circulates through
polyethylene piping in a closed system, just as it does through ground loops but in this case underwater.
The pipes may be coiled in a slinky to fit more surfaces into a given amount of space. The lake needs to be a
minimum size and depth depending on the load. Lake loops have no adverse impact on the aquatic system.
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Well Water System
This type of installation is only possible if there is sufficient ground water available in a well, a lake or river in the
area. The water must be of good quality. Local codes may limit the use of this system in certain areas.
The system is open which means that water is pumped directly into the geothermal unit and then discharged
either into a return well or a body of water. The water quality is unaffected other than a change in the temperature.
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How To Benefit From Geothermal Heat Pumps
Heating In The Winter
Groundwater or a fluid circulating inside a sealed piping loop absorbs heat from the earth. In the heat pump,
refrigerant is compressed to raise source heat to a higher temperature and heat the air or hot water for
distribution throughout your building.
Cooling In The Summer
The system reverses and expels heat from your building to the cooler earth via the loop system or ground water.
This heat exchange process is not only natural, but is a truly ingenious way to create a comfortable climate in
your building.
Hot Water Year-Round
Plentiful hot water provides added capacity for cafeterias, locker rooms, restrooms, etc. In the summer hot water
is virtually free—produced by the waste heat extracted from interior air during the cooling cycle.
Safety
Geothermal heat pumps have no flame, no flue, no odor and no danger of fumes.
Warranty Protection
Ground loop pipes have warranties of 50+ years.
These systems are dependable, reliable and have a long service life.
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www.fhp-mfg.com
601 N.W. 65th Court, Ft. Lauderdale, FL 33309
Phone: 954-776-5471 | Fax: 954-776-5529
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