Commercial Power Humidifiers and Duct Heaters

Electric Duct Heaters

Mon, 9 Oct 2006 20:50:35 -0400

A recent addition to HVAC marketplace - Neptronic commercial duct heaters offer exceptional opportunity for efficient heating of commercial, residential and institutional ventilating ductworks.

Neptronic electric heaters have sensational features that make them the best in the industry. Our "Patent" HEC universal controller can operate without external inputs to provide maximum heat for variable air velocity and temperature conditions. Sensors are located close to the heating elements. The patent pending controller considers only convection heat and differential temperature to precisely measure air velocity and continuously update the proportional control signal to the heater. The result is an extremely precise control of heater output in different environments including VAV applications.

Neptronic manufactures heaters up to 1000 kW with up to 40 kW per sq.ft. to suit any application. Our heaters are approved for zero clearance to combustible materials and are safety tested and listed by “Underwriters Laboratories” (UL) and the “Canadian Standards Agency (CSA), and meet the requirements of the "National Electric Code".

A variety of features are available to design the perfect and ideal heater which will satisfy your needs at "Competitive Pricing".

• Open Coil (grade A and C), Standard Tubular and Finned Tubular elements.
• Slip-In, Flanged and Round Collar mounting.
• ON/OFF and Proportional (Modulating) Control. • ON/OFF and Proportional (Modulating) Control.
• Input signals: 0-10 or 2-10 VDC, 4-20mA, 0-135 Ohms, Pulsed AC/DC.
• Nema 1, 12, 4 and 4X Enclosures.

Here's a brief observation of the newly designed Electric Duct Heaters types:

OPEN COIL HEATING ELEMENTS:

The open coil elements are the most popular in the industry, suitable for most standard HVAC ducted systems. The biggest advantage of these elements is the excellent heat dissipation capacity with heating capacities ranging from 0.5 to 1000 kW.

Features of the Open coil elements

• Minimal pressure drop
• Fast response time
• Up to 40 kW per sq.ft.
• Quick delivery

The grade C open coil elements type is made up of nickel, chrome and iron. Neptronic offers, for applications in humid environments, NiCr 80 (grade A) elements which do not contain any iron.

STANDARD AND FINNED TUBULAR HEATING ELEMENTS:

The Standard and Finned tubular type offers an excellent mechanical resistance, suited for demanding environments. These elements are less sensitive to humid and dusty environments but offer a slower response time.

Features of the standard and finned tubular elements

• Up to 13 kW per sq.ft. (Standard) and Up to 15 Kw per sq.ft. (Finned).
• Heating elements not in direct contact with air.
• Element of U or W shape.

Tubular elements are made of Incoloy 800 (Nickel alloy) tube with a diameter of 3/8” (9.5mm) which contains a heating coil in magnesium oxide powder. Finned tubular elements have aluminum fins installed on the tube to allow a higher heat dissipation capacity.

FRESH AND FORCED AIR HEATERS:

NEP - Therm heaters are designed to complement heating systems of homes and offices by preheating fresh air or returned air with any existing central forced-air heating system.

This electric duct heater is equipped with a modulating controller that allows operating in extremely low air flow with peak performance.

Applications and features:

• Heat recovery ventilation system.
• Central forced-air heating system.
• Air make-up combined with a small fan.
• Zone heater…. and more.
• 6" or 8" collar; 1 kW to 5 kW at 120, 208 or 240 VAC.
• 5 different kits of thermostat configuration available.

For additional information please visit http://www.canadablower.com.

Oleg Tchetchel, Ph.D
NISCO
nisco@nisco.net
http://canadablower.com
http://www.canadianblower.com/hvac/index.html

Neptronic Residential Power Steam Humidifiers

Mon, 9 Oct 2006 20:44:48 -0400

The recommended indoor relative humidity (percentage of moisture in the air) level is 35%. Many homes can have a relative humidity level as low as 7% in the winter.

Pneumococcus, staphylococcus, and streptococcus bacteria die up to 20 times
faster at relative humidity between 45% and 55%, than above 70% or below 20%.

One of the most common health issues that plague our society is dehydration. Most of the tissue in the body is composed of water. If it loses the water, the tissue dries up, its elasticity goes, and with it function declines. Besides dry skin, the symptoms of dehydration include chronic joint and muscle pain, raspy throat, sore eyes, and difficulty concentrating. Humidification can protect your investments.

Controlling the amount of moisture in the air is necessary for your family's health. Dry air in your home can make your throat feel dry, and cause or aggravate respiratory ailments. During extremely cold weather, your home loses humidity to the outdoors and may drop to as low as 5% relative humidity. Cold air inside a home heated to 73 degrees can have a relative humidity approaching 6%. By comparison, typical humidity in the Sahara Desert is about 25%. Generally, one does not want to have a home humidity any lower than 30%. Optimal comfort is considered to be achieved at 40-55% humidity. Health Institutions recommend that your home's relative humidity should be kept between 30% and 55% during the winter. Lower levels aggravate skin allergies and respiratory infections, and higher levels increase the spread mold, bacteria and viruses. Dust mites spread when the humidity is above 50%.

Inadequate humidification during cold weather is one of the major causes of respiratory infections. The heating season causes many people to experience repeated attacks of winter colds. Winter is blamed for these problems, but the actual cause is dryness, which effects the membranes of the nose, throat and bronchial tubes. Relative humidity also has a significant effect on controlling the occurrence of airborne infections.

A newly released unique compact steam humidifier Neptronic SKR Series will improve health and comfort while protecting valuable objects and eliminating static electricity in the home.

This element type electric power steam humidifier has the following features:

• Capacities from 4.5–12lb/hour (2-5.5kg/hour) of steam.
• On/off operation, modulation optional.
• Permanent cleanable stainless steel evaporation chamber.
• Self-cleaning elements.
• Siphon drain requires no drain valve or external tap.
• Simple control wiring using pre-assembled cables with telephone jacks.
• Easy to install, operate and maintain

The SKR humidifier is easy to install and provides a simple and reliable operation with the user friendly control package. Steam is produced in a permanent stainless steel chamber which is easily removed and re-installed for rapid servicing. No plastic cylinders to replace, making it more economical to operate and environmentally friendly than the electrode humidifier.
• No expensive plastic cylinders to buy
• Environmentally friendly - no plastic cylinders to throw away
• No more blocked drain solenoid valves
• Drain water tempered to below 14

Features and components found in the patented SK-300 Series “commercial humidifiers” have been incorporated in the Neptronic SKR to provide the most dependable residential power steam humidifier system on the market.

The steam can be supplied into the duct with a dispersion tube or directly into the room with a fan distribution unit (SDU).

For additional information please visit http://www.nisco.net/home.html.

Oleg Tchetchel, Ph.D
NISCO
nisco@nisco.net
http://nisco.net
http://nisco.net/hvac.html

Neptronic SK300 Industrial Humidifiers

Mon, 9 Oct 2006 20:42:07 -0400

The importance of the right humidity level in every residential and commercial building can not be over-estimated. Humidity becomes the most important factor for everyone's comfort while inside a closed heated space, especially during winter time.

If the air in the house does not contain enough moisture, people may feel cold and uncomfortable - even at 75 F. Dry, thirsty air evaporates moisture from skin, a cooling process that makes one feel chilly. But, with humidity raised to recommended levels, the thermostat can be dialed down to 68 F and still maintain comfortable feeling.

A newly released Neptronic Series SK-300 element type electric power humidifier offers unmatched precise humidity control in any size building, and for the most sophisticated ventilating ductwork design. Its computerized modulating output steam capacity control minimizes electric power consumption, while maintains the desired humidity level within 2% relative humidity range

The self contained SK300 steam humidifiers produce mineral free, odorless, sterile steam without the replacement cost associated with electrode cylinders manufactured by competitors.

SK300 Electric Humidifier has the following features:

• Capacities from 6-180lb/hr (2.7-82kg/hr) of steam • On/Off or fully
modulating with solid state relays
• BACnet interface capability
• AFEC system, mass measuring water sensor.
• Permanent stainless steel chamber with self cleaning heating elements
• Simplicity of operation and service
• Corrosion and scratch resistant aluminium housing with powder paint finish
• Wall mounted installation

The evaporation chamber of the SK300 consists of a permanent stainless steel chamber with self cleaning heating elements. The components of the humidifiers are readily accessible for easy and quick servicing. Reliability of the SK300 is one of the features that set it apart from competing humidifiers. The content of the supply water is not an issue. Using the AFEC patented technology, the water sensor will measure the mass of the water (instead of the conductivity) insuring a proper water level at all time.

The steam can be distributed into a duct by a steam distributor or with a fan distribution unit for direct space applications. This technique is described in details at http://www.nisco.net/neptronic.html.

For additional information please visit http://www.nisco.net/hvac.html.

Oleg Tchetchel, Ph.D
NISCO
nisco@nisco.net
http://www.nisco.net
http://www.nisco.net/humidifier.html

Electric Humidifiers with Steam Distribution Unit

Mon, 9 Oct 2006 20:35:37 -0400

The amount of humidity required in a home is dependent on a certain extent on the way it is constructed. A well insulated house with vapor barriers in walls, ceilings and slabs and properly fitting storm doors and windows may require only couple of gallons of additional moisture per day to maintain the proper relative humidity. A house of same size but loosely constructed may need five times as much moisture in the same period.

If you home winds up with too much humidity, it can increase the growth rate and spread of a wide variety of molds. It will also greatly accelerate the rotting process of many woods and other structural materials.

Humidity not only affects your home itself, but also a wide variety of contents. Low humidity is the main cause of static electricity in a home.
Dry skin and dry carpets are great for creating the friction required to > send sparks from you fingertips into anything you touch. With all the highly sensitive electronics equipment (from stereos and tv's to computers) in homes today, static electricity can be a major threat. It doesn't take much of a spark to harm that expensive piece of electronics.

A newly developed Neptronic SDU steam-distribution unit for stand-alone electric steam humidifiers offers unprecedented precise humidity control in any size room or building where ventilating ductwork is not present. The steam is discharged with a quiet fan blower (available in 3 sizes) directly into the area.

In addition, in order to prevent the accumulation of condensation in air ducts, NEP has designed 2 basic configurations of steam distribution to provide the client with the most economical solution for any particular application.

Distribution manifold systems are to be used to prevent condensation in air ducts (available in 3 types of manifolds) .

1. “MULTI-STEAM”; where absorption distances are very short.
2. “S.A.M.”; where absorption distances are short.
3. “S.A.M.E2”; where duct dimensions are restricted.

For additional information please visit http://www.canadianblower.com.

Oleg Tchetchel, PhD
NISCO
nisco@nisco.net
http://canadianblower.com
http://www.canadablower.com/index.html

Commercial Gas Humidifiers

Mon, 9 Oct 2006 16:23:49 -0400

The importance of the right humidity level in every residential and commercial building can not be over-estimated. Humidity becomes the most important factor for everyone's comfort while inside a closed heated space, especially during winter time.

The recommended indoor relative humidity (percentage of moisture in the air) level is 35%. Many homes can have a relative humidity level as low as 7% in the winter.

Pneumococcus, staphylococcus, and streptococcus bacteria die up to 20 times faster at relative humidity between 45% and 55%, than above 70% or below 20%.

One of the most common health issues that plague our society is dehydration. Most of the tissue in the body is composed of water. If it loses the water, the tissue dries up, its elasticity goes, and with it function declines. Besides dry skin, the symptoms of dehydration include chronic joint and muscle pain, raspy throat, sore eyes, and difficulty concentrating.
Humidification can protect your investments.

How to choose a humidifier ?

CAPACITY - The unit should be capable of maintaining the correct level of relative humidity, considering the size, construction and other characteristics of you home.

CONTROL - The newest type of humidifier is computer-equipped and completely automatic, eliminating the need for frequent humidistat adjustments. It generates up to 50%more moisture than other humidifiers.

STURDY CONSTRUCTION - A properly constructed humidifier uses materials that rust proof where necessary; corrosion proof where required.

MAINTENANCE - An installed, central humidifier requires no manual filling. Many units are equipped with drains to flush out minerals. They normally require attention only once or twice a year, depending on degree of water hardness.

SAFETY - Be sure to select a humidifier that introduces humidity as a steam. These units do not emit any bacteria or white dust into the airstream.

A newly designed Neptronic Series SKG-3000 Gas Steam Humidifier offers unmatched precise humidity control in any size building, and for the most sophisticated ventilating ductwork design. Its computerized modulating output steam capacity control minimizes energy consumption, while maintains the desired humidity level within 2% relative humidity range.

The SKG 3000 series of gas fired humidifiers (Natural or Propane gas) offers state of the art gas components and trouble free operation. The wide modulation range, high capacities and ease of servicing makes it the most dependable and best humidifier on the market.

Features of the SKG 3000 Commercial Gas Humidifier:

• Capacities from 110-810lb/hour (50-369kg/hour) of steam.
• Fully modulating; ranging from 10lb/hour (4.5kg/hour) to maximum.
• One of the highest combustion efficiencies of 83% HHV.
• Uses either "Domestic", "RO" or "DI" water.
• Automatic (patent) scale removal process for its heat exchanger.
• Temperature of the drain water is tempered below 60ºC (140ºF).
• Ease of servicing; cleans and re-installs in 5 minutes.
• BACnet remote communication protocol.

The SKG 3000 uses the most advanced, commercially available gas technology ensuring consistent and efficient combustion. The same technology self-adjusts for altitude compensation and vent configuration (does not require an auxiliary power-venting blower). The attractive and innovative design of the SKG 3000 requires as little as one third of the operational footprint of its competitors of equivalent capacity. The SKG 3000 uses also a patented water level control system that allows energy conservation management of expensive boiling water and steam.

Reliability of the SKG 3000 humidifier is one of the features that set it apart from competing humidifiers. Great care has been taken to select materials which have proven themselves for their exceptional performance in very harsh conditions. Such materials are of 316 stainless steel construction, Teflon sleeved level control probe, silicon tubing (or equivalent) and powder coated steel cabinet.

Principle of Operation of SKG-3000 Gas Humidifier is the following. On a call for humidity, the combustion air blower creates a negative pressure across the valve orifice located at the air inlet. The gas valve opens and the gas/air mixture is forced through the burner port and is ignited. Heat from the product of combustion is transferred to the water, by means of the heat exchanger, to produce steam and the products of combustion are vented out of the flue. The burner then begins to modulate based on demand.

For additional information please visit http://nisco.net/neptronic.html.

Oleg Tchetchel, Ph.D
NISCO
nisco@nisco.net
http://nisco.net/index.html
http://nisco.net/humidifier.html