PRODUCTS

CONDENSER COILS

Green Energy Technologies offers condenser coils designed for use with all refrigerants including HFC’s and HCFC’s. Built to rigorous specifications for use outside, we place an emphasis on our brazed connections to combat thermal expansion as well as the harsh environment of the outdoors. We offer various circuiting to meet all specifications including multiple circuits and face split condenser coils.



Material Specifications

Rows
  • Condenser Coils – 1 to 20 rows
FPI- Fins Per Inch
  • 1/2" OD tube coils - 6 to 20 fins per inch
  • 3/8" OD tube coils - 6 to 20 fins per inch
  • 5/8" OD tube coils - 6 to 20 fins per inch
FL - Fin Length

Maximum fin length is 500 inches. Center supports are required. A center support is sheet metal with tube holes used to support the middle of the fin pack.

Testing

All coil assemblies are leak tested under water@ 450 PSIG Nitrogen. All Coil assemblies are Nitrogen charged for shipping.

DX Evaporated Coils

DX evaporator coils are designed to be used in air-side applications for cooling, heating, and dehumidifying. With a wide array of distributors and TXV's, we are able to provide proper reduction of pressure and temperature to optimize coil performance. Our DX Evaporator coils offer various circuiting capabilities as well as face split and intertwined designs. Green Energy Technologies the capability to design, duplicate, and produce custom DX evaporator coils as well as OEM replacement evaporator coils.

Rows
  • DX Evaporator Coils - 1 to 20 rows
FPI - Fins Per Inch
  • 1/2" OD tube coils - 6 to 16 fins per inch
  • 3/8" OD tube coils - 10 to 20 fins per inch
  • 5/8" OD tube coils - 6 to 14 fins per inch
FL - Fin Length

Maximum fin length is 500 inches. Center supports are required for big sized coils. A center support is sheet metal with tube holes used to support the middle of the fin pack.

Testing

All coil assemblies are leak tested under water @ 450 PSIG Nitrogen. All Coil assemblies are Nitrogen charged for shipping.

CHILLED WATER COILS

Chilled water coils (CHW) are tube-fin heat exchangers consisting of 4-12 rows of tubes usually that pass through sheets of formed fins, bonded through tube expansion. As warm air passes across the coil and contacts the cold surface, heat transfers from the water flowing through the tubes to the air entering the coil. CHW Coils have many different applications. GET has the capabilities to provide you with the exact CHW coil to meet your rigorous specifications.

Our coil software program allows us to work with our customers specific needs. We are able to customize the materials of construction, set entering air conditions, adjust CFM and flow rates to meet customer specification. This allows the perfect fit and operation of every CHW manufactured.


Materials of Construction and Sizing:

Tube Size – Chilled Water Coils as a standard are 3/8”, 1/2″ or 5/8″ tubing.

Fin Material – Standard Chilled Water Coils have options of Al or Cu Fins.

Casing Material – Most Water Coils as a Standard are galvanized metal casing with options for stainless steel casing.

Header sizes – The headers for a Water Coil can range from 0.5″ to 6″

Fin Height – The Fin Height is the Length of the aluminum/copper fin parallel with the header

Fin Length – The Fin Length is the Length of the fin horizontal to the header

Casing Height – Most CHW Coils have casing on the top and bottom of the coil the casing height includes the fin height and both the top and bottom flanges of the casing.

Casing Length – The casing length includes the tubes sheets on both the front and back of the coil and what are support the tubes running through the coil. Like the casing height the fin-pack and the both flanges on the casing are included in the casing length.

Testing

All coil assemblies are leak tested under water @ 450 PSIG Nitrogen. All Coil assemblies are Nitrogen charged for shipping.

Copper Coils

Keep Condenser Coils clean to maintain maximum performance for operation at highest efficiency, during periods of high cooling demand or when dirty conditions prevail. Prior to cleaning, disconnect and lockout electrical power. Cover motors to prevent moisture from penetrating into the windings, potentially causing motor failure. Remove large debris from the coils and straighten fins before cleaning. Clean refrigerant coils with cold water and detergent or with one of the commercially-available chemical coil cleaners. Rinse coils thoroughly after cleaning.

Do not clean the coil with hot water or steam. The use of hot water or steam (in non-steam coils) as a refrigerant coil-cleaning agent will cause high pressure inside the coil tubing and subsequent damage to the coil.

Do not use acidic chemical coil cleaners. Do not use alkaline chemical coil cleaners that, after mixing, have a ph value greater than 8.5. Failure to follow these guidelines or the manufacturer’s instructions for use of cleaning chemicals could result in damage to the unit.

Exercise extreme caution with any caustic or toxic chemical coil-cleaning compounds to prevent personal injury or equipment damage.

“Don’t Waste Energy & Money with Dirty Coils”

A coil fouled with dirt and grime cannot supply proper heat transfer and results in greater energy consumption. Equipment operating with dirty coils can use up to 37% more energy than those with clean coils. Additionally, a dirty system’s cooling capacity can be reduced by as much as 30%. Dirty coils increase operating pressure and temperatures that breakdown the compressor’s lubricant and can result in equipment failure. A failed compressor means no cooling and costly repair.

Manufacturing custom direct replacement OEM coils is a specialty that few coil manufacturers can achieve. Our replacement coil manufacturing process uses superior construction materials and address operational issues that the coil we are replacing may have experienced in the field. We are able to build coils based on tube size, circuiting and fins per inch that match the exact capacity and fit of existing OEM coils.

With an extensive database of OEM coil drawings for commercial and light commercial rooftop units and air-cooled chillers will ensure that you have access to the coil products you need in a timely fashion. Offering direct replacement OEM condenser coils and DX evaporator coils with superior build quality and exact fit.

heating Coils

steam Coils

The highest form of thermal energy recovery in air handling systems is the rotary heat exchanger. There is no other system of energy recovery that can deliver high efficiencies with high air volumes in limited room spaces.

The functional principle

The rotor which is constructed like a honeycomb rotates non-stop between the stream of hot exhaust air and the cold intake air. The rotor is warmed up in the stream of exhaust air and transfers the heat to the stream of incoming cold air up to 80% of the heat and humidity contained in the exhaust air can be recovered in this way by using energy recovery wheels.

Housing types

With many different housing types it is possible to offer you a large bandwidth of transfer mediums encompassing many characteristics such as different geometries for sensible latent energy recovery, applications in aggressive or corrosive atmospheres matching your requirements and operating conditions for every place and every application, the right rotary!. The housing of our rotary’s are optionally galvanized steel, aluminium, aluminium-zinc or stainless steel including mounted motor systems and options for inspection either frontal or from the side. All dimensions of the housing are adaptable in steps of 1 mm (0.04 in). If desired we can produce special housings with an integrated bypass.

Rotor types

  • Condensation rotor for sensible energy respectively heat recovery : latent only in condensation state P/PT
  • Enthalpy rotor for sensible and latent energy recovery through hydro scopes surf ace of the transfer medium.
  • Epoxy rotor for sensible energy respectively heat recovery; latent only in condensation state.
  • Sorption rotor for sensible and latent energy respectively heat recovery over the whole year through a highly hydroscopic coating.

Material thickness

  • 0.12mm: Special rotors for paint booths for example.
  • 0 .10mm: For frequent high pressure cleaning and higher risks to the life expectancy.
  • 0 .08mm: standard: For A /C systems with moderate exhaust air pollution, suitable for high pressure cleaning.
  • 0 .07mm: For A/C systems with moderate exhaust air pollution.

Wave height

  • 16: Higher efficiency through smaller tighter windings but a higher pressure loss.
  • 19: Standard: A/C systems with moderate exhaust air pollution.
  • 25: Special version for high levels of air pollution

Driving motor

The rotor drive is made possible through an a/c motor with a V - drive belt. The motor is mounted on a sprung rocker panel to ensure belt tens ion. For optimum regulation of the rotor, we recommend a Rotor controller.

New direction in motor technology.

Energy saving DC motors in compact form for our rotary heat exchangers. Direct motor activation without extra regulator. Our new innovations open possibilities to optimize the serial production of air conditioning systems.

The cleaning chamber or Purge Sector

The cleaning chamber or purge section works as follows: A small part of the supply air stream is redirected into the exhaust stream thus ensuring the cleaning process. Equally, any migration of exhaust air into the supply stream is inhibited. The mode of operation can only be warranted when the correct pressure conditions are available. Most rotors are supplied without the cleaning section as the marginal contamination is acceptable.

Cleaning devices

For the regenerative heat exchangers there are several automatic cleaning devices with electric or pneumatic drive system and regulator type AS2. They can be selected according to the degree of pollution received by the rotor.

AIR TO AIR PLATE HEAT EXCHANGERS

Plate Heat exchangers are utilized for both the cold and warmth recovery in the A/C industry and the processing technology. These are long to the group of recuperative heat exchangers. By means of the heat exchanger, two air currents of differing characteristics (i.e. warm return current and a cold supply current) are forced to pass by each other in opposite directions or parallel to each other through thin, specially structured plates without any contact between one air current and the other. The energy transfer is caused by the numerous plates present in the heat exchanger. A mixing of the two air streams will not occur. Consequently, the transfer of humidity, pollution, bacteria and doors is avoided.

Function principle

The air is forced to crossover through the heat exchanger. The energy is transferred by the plates. As these heat exchangers are often used in environments where recalculated air is not allowed, it is imperative that there exists a high level of air tightness.

Advantages

A very high level of air tightness is obtained by the double folding process of the face side edges which is equal to 5x material thickness. Through precise workmanship there are no under-ventilated zones or niches where condensations can accumulate. Extremely high strength and pressure related stability. Light, seawater resistant Aluminium Quality. Desired package lengths available.

HEAT PIPES

Green Energy Technologies is dedicated to providing custom designed and manufactured heat pipe solutions that meet our customers exact needs and specifications. Our experienced personnel are prepared to help you with a standard heat pipe application, or quickly develop a custom heat pipe design which will meet your requirements and needs and be cost effective.

WHAT IS A HEAT PIPE?

A heat pipe is a heat-transfer device that combines the principles of both thermal conductivity and phase transition to efficiently manage the transfer of heat between two solid interfaces.

At the hot interface of a heat pipe a liquid in contact with a thermally conductive solid surface turns into a vapor by absorbing heat from that surface. The vapor then travels a long the heat pipe to the cold interface and condenses back into a liquid - releasing the latent heat. The liquid then returns to the hot interface through either capillary action, centrifugal force, or gravity, and the cycle repeats. Due to the very high heat transfer coefficients for boiling and condensation, heat pipes are highly efficient thermal conductors.

A heat pipe is a very efficient heat conductor. A typical heat pipe consists of a vessel in which its inner walls are lined with a wick structure. The vessel is first vacuumed, then charged with a working fluid, and hermetically sealed. When the heat pipe is heated at one end, the working fluid evaporates from liquid to vapor (phase change). The vapor travels through the hollow core to the other end of the heat pipe at near sonic speed, where heat energy is being removed. Here, the vapor condenses back to liquid and releases heat at the same time. The liquid then travels back to the origina l end via the wick by capillary action or gravity. The energy required to change phase from liquid to gas is called the latent heat of evaporation. The working fluid in a heat pipe can transport a very large amount of heat and makes heat pipes l00's to 1000's times better than a solid copper rod.

APPLICATION OF HEAT PIPES

In heating, ventilation and a ir-conditioning systems, HVAC, heat pipes are positioned within the supply and exhaust air streams of an air handling system, in order to recover the heat energy.

The device consists of a coil of multi-row finned heat pipe tubes located within both the supply and exhaust air streams. Within the exhaust air side of the heat pipe, the refrigerant evaporates, taking its heat from the extract air. The refrigerant vapor moves towards the cooler end of the tube, within the supply air side of the device, where it condenses and gives up its heat. The condensed refrigerant returns by a combination of gravity and capillary action in the wick. Thus heat is transferred from the exhaust air stream through the tube wall to the refrigerant, and then from the refrigerant through the tube wall to the supply air stream.

Because of the characteristics of the device, better efficiencies are obtained when the unit is positioned upright w ith the supply air side mounted over the exhaust air side, which allows the liquid refrigerant to flow quickly back to the evaporator aided by the force of gravity. Generally, gross heat transfer efficiencies of up to 75% are achieved.

What is a Wrap Around Heat Pipe?

The wrap around heat pipe is a heat pipe wrapped around a cooling coil. It consists of two sections, the pre-cool section placed before the cooling coil and the reheat section placed after the reheat coil. The wrap around heat pipe eliminates the need for reheat and increases the dehumidifying capacity of an air conditioner by as much as 91% . The technology uses about 50% less energy than electric reheat systems and about 25% less energy than other types of reheat.



Benefits of Using Wrap Around Heat Pipes

  1. Increase Moisture Removal of A/C Units -The first section of the heat pipe module precools the entering air. This causes the approach temperature of the air to the cooling coil to be lower. The result is that as the air leaves the cooling coil, it is colder with a lower dew point and with less moisture in it.
  2. Dryer Supply Ducts - After leaving the cooling coil, the air is reheated by the second heat pipe section. This lowers the relative humidity of the supply air. In a typical system, the relative humidity is lowered from nearly 100% leaving the cooling coil to approximately 70% leaving the second heat pipe section. This is in keeping with ASHRAE Standard which warns that if duct relative humidity exceeds 70%, fungal contamination can occur.
  3. Humidity Control - Buildings frequently encounter serious humidity problems that need to be addressed. Buildings used for specific purposes like hospitals, certain food processing plants, and some manufacturing plants require humidity to be kept at a low level. Wrap around heat pipes are usually the most efficient method of humidity control in these situations. By helping the A/C system remove more moisture from the air, the required humidity levels can be easily achieved.
  4. Energy Savings Through Passive Reheat - Since heat pipes provide reheat by utilizing the heat from the entering air, there is no requirement for active reheat and there is no net heat added to the space. Using heat pipes to replace active reheat results in substantial savings. Energy savings are done when electric reheat is replaced with dehumidifier heat pipes.
  5. Equipment Savings through Downsizing -To cope with high humidity loads, the most frequently used technique is to oversize the A/C unit and then reheat the over-cooled air. This results in high operating cost as well as initial equipment cost. If dehumidifier heat pipes are used, over­ sizing and active reheating can be avoided. With a chilled water system, wrap around heat pipes allow the designer not only to reduce the size of the cooling coil but also reduce the chilled water requirement, thus a smaller chiller unit can be used instead.

Energy Recovery Heat Pipes Features

  1. Passive Operation - No energy input is required to operate the Heat Pipes. There are no moving parts. When two air streams pass through the Heat Pipes, one air stream on the supply side and the other on exhaust side, the temperature difference between the two a ir streams heats and cools refrigerant. The phase change of the refrigerant, from a liquid to a vapor and back again, transfers energy from one side to the other. It's simple.
  2. Long Life - There is nothing in the Heat Pipes to wear out! The Heat Pipes are passive. They have no moving parts. To guard against corrosion, the Heat Pipes can be ordered with a protective coating. The Heat Pipes are fabricated with a multitude of charged circuits. Under normal operations, there is no reason for these ever to leak. If one of the many circuits did leak there would be little impact on performance as other circuits would still function.
  3. Isolated Air Streams - Dividing partitions to separate the two air streams can be easily added to Heat Recovery Heat Pipes. The copper tubes carrying the Heat Pipe working fluid are expanded into the mating holes in the dividing plates assuring an excellent seal to prevent cross contamination. This divider makes heat pipes a good choice in laboratory type applications, where cross contamination is a concern.
  4. Minimum Maintenance - Since the Heat Pipes have no moving parts, the only maintenance recommended is periodic cleaning. A coil cleaner may be applied for this purpose just as for any cooling coil.
  5. Flexible Size - Heat Recovery Heat Pipes from can take up less space than other heat recovery schemes. They can a lso be manufactured in custom sizes to fit nearly any application. Heat pipes can also be compact in depth. A six-row heat recovery heat pipe can be fabricated with a thickness of as little as 8 inches.

UV LAMPS

Where to use GET UV

  • (PTAC) Packaged Terminal Air Conditioners
  • Fan Coil Units
  • Unit Ventilators
  • Ice Machines

GET UV eliminates mold on AC coils

Mold can be a serious problem for allergy sufferers—and a drain on HVAC efficiency. GET UV systems for commercial and industrial HVAC, deliver the highest level of performance and safety in UV air disinfection. Their design reflects GET UV in-depth knowledge of ultraviolet light—and how it is optimized for HVAC coil disinfection.

GET UV —unprecedented installation flexibility

The GET UV is a complete, flexible and easy-to-install design. Utilizing magnetic lamp holders installation is fast and dependable. Units ship with a light shield that simply snaps into place and can be rotated to block the harmful UVC rays from escaping the air handler. Unit is hard wired and connect the detachable lamp lead after routing to needs.



COATINGS

Coil corrosion is an expensive problem in the HVAC industry, leading to coil replacement or entire system replacement. Corrosion results in failure, and is responsible for about 40% of equipment failures.

This is the more common experience with outdoor heat exchange coils and is usually attributed to galvanic corrosion. This occurs whenever there are dissimilar metals in the presence of water containing an electrolyte.

Dissolved salts of chloride are the most common electrolytes. Although, any soluble salt can lead to galvanic corrosion, such as those containing fluoride, bromide, iodide, sulfate, nitrate, borate, etc.

When galvanic corrosion occurs, the more sacrificial metal (aluminum in our coils) will preferentially corrode, and by doing so, protect the more noble metal (copper in our coils).

Treat your Coils for HVAC Units with an effective ANTI­ CORROSION Coating.

E-KOTE COATING

E-KOTE is a permanent self-etching epoxy coating for the protection of heat exchanger units in HVAC Industry. The coating protects copper/aluminium coils and all ferrous and non ferrous metals. Product can be applied by dipping or spraying during manufacture or can be reapplied on site.

E-KOTE has added benefit of premium corrosion protection, permanent water repellency, increased airflow and condensation. This coating can increase the efficiency of heat exchanger with corrosion protection and by reducing the potential of fouling. Cost saving through reduced electricity consumption is an added advantage.

The surface applied with E-KOTE will remain clean and dry, preventing bacteria growth & reducing cleaning requirements. This product is especially meant for heat exchanger units in air condition industry.

E-KOTE FEATURES:

  • Substantial benefit of premium corrosion protection.
  • Permanent water repellency on surface.
  • Improved energy efficiency through increased air flow and condensation.
  • Clean and dry surface reducing cleaning requirements.
  • Excellent anti fouling properties preventing contamination of bacteria.

E-KOTE USES:

  • High Standard Corrosion Protection of Heat Exchanger Units.
  • Protective Coating with Corrosion & Microbial Protection.
  • Water repellant Corrosion Protection of Aluminum, Ferrous & Non Ferrous metals.
  • Coating that gives improved energy efficiency through increased air flow.
  • Coating that gives improved condensation & anti fouling properties.

APPLICATION DATA:

Application Film Thickness: 8-10 Microns
OpenTime : 5–10 Minutes.

PACKAGING:
20 ltr. Pail and 1000 ltr. IBC Tank.

SHELF LIFE:
One year from date of manufacture if stored in sealed packs below 25 degrees C.

CLEANING:
Tools may be cleaned with water immediately after use. Once dry, by mechanicals means only.

TECHNICAL SERVICES:
Technical assistance and information is available by calling Green Energy Technologies.

HEALTH AND SAFETY:

No adverse health effects expected if the product is handled in accordance with normal safety precautions. If using in confined areas, a positive pressure air respirator should be used. Wear rubber hand gloves, safety shoes and safety goggles while using and handling the product. Avoid contact with skin and eyes. In case of accidental contact with eyes, wash with plenty of water and seek medical treatment immediately.

Available Colors

HERESITE COATING

Green Energy Technologies provides Heresite coating from USA for your HVAC coil protection.

Heresite is a phenolic coating, generally dark brown in color. It is extremely flexible coating. Heresite is resistant to many chemicals. It is the one of the most widely-used coatings worldwide, is very safe, and is dip-coated. Because of this ease of application, coating is uniform on the coil.

COMMITTED TO ENERGY RECOVERY