Light Wood Pellet Mill ZLSP200B

This residential wood pellet mill have eletric motor of 3-phases on 7.5KW and wood pellets capacity for about 8-120 KG/h. Main advantages of small pellet mill are light weight and low price. This wood pellet machine comes from trustable Manufacturer of Wood Pellet Machine from China.

Best price for this machine is 940$.

You can buy it on PelletMill.

Heat and Its Control

Perhaps no single factor is more important to man’s evolution than his learning how to generate and control heat. The ancient Greeks realized this and developed an elaborate myth about Prometheus, the fire-bearing Titan god who stole Fire from the gods for the benefit of mankind. For the Romans, the Vestal Virgins were keepers of the sacred fire.

Man, of course, understood the workings of fire long before scientists were able to measure and explain the phenomenon, because that understanding was essential for survival. He needed fire to cook his food and to keep his body warm in winter. How man gained more and more control over heat and utilized it to forge his tools and weapons is fascinating in itself, but what concerns us here is  the nature of heat,  its effects, and  the factors involved in the combustion of wood and the transfer of the resulting heat to the surrounding atmosphere or living space of man.

How Hot Is Heat?

The term “heat” is used in a number of slightly different ways. First, there is the sensation of heat. Our central nervous system is extraordinarily sensitive to heat or the lack of it, at least within a limited range. This range of heat we call “temperature,” which is the objective measurement of the degree of hotness, or just exactly how hot something is. Our perception of the degree of heat in a room can often be influenced by the health of our body at the time or by our experience of heat immediately preceding our entrance into the room. For example, we often feel “chilled” when we are sick with a cold although the room temperature may be as high as 80 degrees Fahrenheit. Likewise, an outdoor storm cellar with a consistent temperature of 55 degrees F will seem quite warm to us when we step into it out of a subzero climate. Our perception of heat, then, is a psychological phenomenon that is relative to other experiences. Temperature is not. It is an absolute measurement of hotness.

Retained Heat

We also speak of heat in terms of quantity. A bathtub full of hot water (Fig. 1) contains a much larger quantity of heat than does a shallow washbasin similarly filled. Or, expressed differently, it takes a lot more heat to raise the temperature of the water in a 60-gallon water tank one degree than it does the water in a 20-gallon tank. (It costs a bit more money, too!)

There is more heat in a bathtub full of hot water than in a basin similarly filled.

Materials like iron and steel will retain more heat over a longer period of time than will an equal quantity of copper or tin. In fact, it is just this ability to “store” large quantities of heat that makes iron and steel ideal materials for stovemaking. They do not store heat permanently, however. They merely absorb large quantities of heat and then release (radiate) it more slowly than do most other materials.

Radiant Heat

This radiation, or “radiant heat,” is what warms our skin when we lie in the sun or reddens our face when we sit near a big potbelly stove. Radiation (of the type we are talking about now) is converted into heat when it strikes an absorbing substance, such as our skin. The transfer of heat energy by radiation and absorption is a most important aspect in our consideration of wood-burning stoves.

The sensation of heat is, therefore, the goal to be reached. Measuring heat is a means of determining how efficiently we can attain that goal. Containing heat in large quantities and allowing it to radiate and diffuse is the means to the end.

Combustion

With an understanding of these basic characteristics of heat, we now turn to the phenomenon of combustion and observe what happens when we ignite a log of wood. It is important to understand combustion because the many types of woodstoves are made to take advantage of the various processes which occur in an actively burning fire.

Vaporization of Water in the Wood

The first stage in the combustion of wood is the vaporization of moisture (water). Moisture content usually represents the ratio of the weight of contained water to the weight of dry wood. “Dry wood” is considered absolutely dry when all water that is not chemically bonded to other elements in the wood is removed. This can be done by drying wood in an oven at the boiling point of water (100 degrees С or 212 degrees F). A freshly felled cypress tree in a swamp in South Carolina may contain 200 pounds of water for each 100 pounds of dry wood. It is thus described as having 200 percent water. More frequently the water content of sap-wood in freshly felled timber amounts to about 100 percent, with the heartwood containing much less. Wood allowed to dry (“season”) in the open air will generally dry until the moisture content equals that of the atmosphere. Brought indoors, the wood may dry further until it reaches 6 or 7 percent water. Even well-seasoned wood will contain as much as 20 percent water.1

As the wood becomes hotter, it loses more and more of its moisture and begins to give off a complex mixture of gases and tar-forming vapors called volatiles, which immediately burst into flame. The ignition temperature of these gases can be anywhere between 800 and 1200 degrees F, but is usually around 1100 degrees F. It has been estimated by scientists that about 40 to 60 percent of the heat-value of wood comes from the burning of these gases.

Charcoal Stage

While the gases continue to flame, the wood goes through complex chemical changes until, as the flames subside, the wood turns into charcoal. These red-hot coals burn with hardly any flame because the volatiles have been mostly burned up. Charcoal, however, needs large quantities of air in order to keep burning, and the coals are so hot that the mass of air is nearly always heated enough to help burn the carbon monoxide gas produced by the coals. This gas turns into carbon dioxide, the same gas we exhale from our lungs and drink in carbonated beverages.

The charcoal stage of the burning cycle lasts longer in hardwoods like oak and hickory than when relatively soft woods such as white pine and spruce are burned. Soft woods, that is, woods of lesser density, will produce longer flames and burn more fiercely in the beginning stages of the fire. It has been discovered, however, that the flaming stage, even in hardwood Fires, can be prolonged by igniting the fire with a more intense heat-source and by allowing the fire access to much more oxygen. The charcoal stage will then be correspondingly briefer.

Designers and users of wood-burning stoves must be aware of these processes if they are to obtain maximum heat from the fuelwood. For example, it is known that in an open fireplace, most of the gases given off in the first stage of combustion are cooled by too much oxygen; therefore, they do not ignite completely and are lost up the chimney (Fig. 4). In the older-model box stoves, the flame-path to the flue is so direct that much of the gas passes up the flue before it can mix with enough oxygen to burn more vigorously. These gases must be heated enough to ignite and to be maintained in flame both by the surrounding flames and an adequate source of secondary (preferably preheated) air.

Grandeg Eco 25 Pellet Boiler (GD-Eco-25)

Main features of Grandeg Eco Pellet Boiler: You can serve the boiler at a convenient time for you. You can adjust the desired temperature of heating. You can buy pellets from any vendor at any time. Filled with granules of the bunker short of the boiler in the automatic mode for up to a week and sometimes more. Remember that the flow of granules for direct heat loss depends on the heated building. It should be understood that the boiler uses fuel to produce heat only going to compensate for heat loss building, as well as for hot water.

Best price: $4000

Grandeg Eco 25 Pellet Boiler Specification

 Heat generation capacity  kW   25
 Operating temperature  C°   80
 Efficiency factor of the heating system  %   80 – 90 (depending on how clean the boiler is)
 Operating pressure of the heating system  bar   1,5
 Diametr of connection pipes  Dn   25
 Size of the flue pipe for the boiler  ø mm   125
 Weight of the boiler (net)  kg   250
 Voltage of the electricity connection  В   220
 Average theoretical consumption of pellets per day  kg/m2/h 0.006 x m2 x 24h

In Pack:

  • Boiler Eco-25
  • Vertical burner GD-BRN-V-25
  • Bunker for pellets GD-BRN-V-BS

Grandeg Eco 25 Pellet Boiler Accessories (NOT INCLUDED IN STANDARD PACKAGE)

  • GD – EcoB – hopper for granule size S, M, L
  • GD – EcoRec – site recycling
  • GD – BRN – TCH – Touch Screen
  • GD – BRN – LMD Lambda sensor
  • GD – Eco3C – three-way valve
Grandeg Dealers Contacts:
tel.: +371 67185963
fax: +371 67185958
mobile: +371 26554265

 

Harman XXV

After building stoves for over 30 years, Harman knows what his customers are looking for. The beauty of cast iron. The convenience of pellets. The Harman XXv has several safety features that automatically monitor changes in the stove’s temperature and draft. Harman XXv cannot overheat. This stove also has the power of 50,000 BtUs. And the Harman XXv pellet stove was designed for Harmans 25th Anniversary and is created with everything you expect in a Harman. the XXv will burn any grade of pellet at maximum efficiency and stillkeep your home at your desired temperature.

Best price: $2999

Harman XXV Pellet Stove Specification

  • Cast iron with oak leaf details
  • Quietest Harman pellet stove ever
  • 65-pound hopper capacity
  • Up to 45,000 Btu/Hour
  • tinted glass hopper lid
  • Rear vent with top vent option
  • large ash pan access through specially designed ash door
  • 176 sq. in. of glas
  • Heating Capacity up to 2,300 sq. ft

 

Harman Accentra

The main feature of Harman Accentra Pellet stove is remarkably precise temperature control system and stylish design. This stove can burn up to a ton fo pellets without cleaning. But stove cleaning is not so hard, it takes less then half an hour. Also you will probably enjoy Automatic Ignition, room sensor and really quiet operation.

Best price: $2344

Harman Accentra Specification

Fuel    Bio-Mass Pellets
BTU Range    0 to 40,000
Heating Capacity    1,400 square feet
Hopper Capacity    50 lbs
Blower Size    150 cfm
Outside Air Size    2.375 inches
Fuse Rating    5 amp
Weight    370 lbs
Depth    23.2 inches
Height    31.5 inches
Width    24.6 inches
Feed Rate    .75 lbs per hour (minimum)
4.75 lbs per hour (maximum)
Venting Size    3 Inch Pellet Vent Pipe
Testing    Safety testing by Omni Testing Laboratory
ASTM-E1509 ULC-C1482 Oregon-814-23-900
per 40CFR-60.530 sup. Part AAA
per EPA method 28A and 5G

Harman Accentra Clearances and Dimensions

Rear    2.25 inches
Side    12 inches
Front    6 inches

Harman Accentra 3d View

HarmanAccentraPelletStove

 

New plant for wood pellets production in Europe

Latgran, the largest Latvian wood pellets producer, inaugurated in Kraslava new plant to produce wood pellets. In the establishment of production has been invested 14.6 million euros. Creation of production began last fall, but in test mode the factory began to work in the summer of 2011.

Krāslava plant will be the third production in Latvia granules Latgran. It can produce about 150 000 tons of pellets  per year.  Pellets produced Kraslava be exported to Scandinavia, the Netherlands and Belgium. “Markets do not change, only now able to supply products to a greater extent,” – said board member Latgran Martins Zvejnieks.

Last year Latgran produced 239 000 tons of pellets this year is planned to produce 275 000 tonnes, and in 2012 – 380 000 tons. In 2010, turnover amounted to 22.2 million Latgran lats profit – 5 mln EUR

Pellets for Pellet Stoves

What are wood pellets? Wood pellets – a standardized cylindrical pressed product of the dry, desolate wood, such as flour milling operation of cutting machine, sawdust, shavings, chips, sanding dust, the remnants of forest wood, etc. Wood pellets are made without chemical fixers under high pressure. Pellets for Pellet Stoves can also be made from other organic products: hay, straw, peat, and so on.

In this article we will try to find wood pellets pros and cons. Hope it will help you to make right choice.

Comparative Analysis of Different Fuel Types

 

Type of fuel The heat of combustion MJ / kg % of sulfur Calorific kVt-hour/kg % of ash Carbon dioxide kg / GJ
Coal 15 – 20 1 – 3 4,65 10 – 40

60

Wood chips, sawdust 10 – 12

0

2,7

2

0

Pellets 17,5 0,1 4,5 0,5

0

 Wood Pellets Specification

  • Diameter 7mm
  • Length from 2 to 5 diameters
  • Humidity 12%
  • Bulk weight 0, 630 tons / m ²
  • Specific gravity of 1.2 t / m ²

Why Pellets for Pellet Stoves are Better then Everything Also?

Getting the finished product from the timber is associated with the losses, which are known as waste. Waste at the stage of the forest can reach several tens of percent (stumps, branches, needles, etc.) A typical sawmill converts 60% of wood planks, while 12% goes to the sawdust, 6% – in the end trim, and 22% in slab and trimming. Wood pellets have enormous advantages over conventional fuels – pellets does not contain the latent substances inclined to spontaneous ignition at rise in temperature. Considering these indicators, in the USA and European countries people really often using pellets  for heating of houses and cottages.

Blaze King Fireplace Insert

Blaze King Industries offers 2 kinds of wood fireplace inserts. Both of those inserts have great design and quality, but still have few differences. What are those differences?

Blaze King the Princess Fireplace Insert – PI1010A

Best price: $2000

This fireplace insert have a huge firebox with thermo-reactive fire brick.  This feature will help to radiate heat directly into full room. Wide viewing glass door allows the fire to be visible from the all places in the room. Warning –  customers reported there could be problems with glass door cleaning. Also there could be problems with removing the ashes out of the firebox.

The Princess Fireplace Insert Main Features

  • Up to 87,850 Btu’s (see reverse side for details)
  • Incredible 82.5% Efficiency
  • Long Burn Times Up To 20 Hours
  • Optional Gold Plated Doors
  • 1400 Degree Ceramic Glass
  • Standard Variable Speed Fan
  • Limited-5 Year Warranty PLUS 6 years on Catalytic Combustor

Blaze King the Princess Fireplace Insert Specifications

  • Overall Width 25”/635mm
  • Overall Height 23”/584mm
  • Overall Depth 25.5”/648mm
  • Weight 325#/80kg
  • Flue Diameter 6”/152mm
  • Minimum Heat Output 6,200 Btu/hr
  • Average High Heat Output 40,000 Btu/hr
  • Emissions (Weighted Average EPA) 2.0 gr/hr
  • Wood Length 16”
  • Low Burn Time 20+ Hours
  • Width 25”/635mm
  • Height 23”/585mm
  • Depth 13”/330mm
  • Minimum Floor Protection 20” x 30”/ 508mm x 762mm
  • Minimum Protection Front 16” (USA) 18” (Canada)
  • Overall Shroud Dimensions 28/4” h x 43 1/4” w 730mm x 1100mm
  • Optional Oversize Shroud 32 1/2” h x 47” w825mm x 1193m
  • Average EPA Test Fuel (Low Burn) 10,633 Btu’s/hr
  • Average EPA Test Fuel (High Burn) 35,767 Btu’s/hr
  • Average Real World Btu’s (Low Burn) 6,200 Btu’s/hr
  • Average Real World Btu’s (High Burn) 40,000 Btu’s/h

 Blaze King the Briarwood II Fireplace Insert

This fireplace insert offers non catalytic burning, that helps for clean and nice looking burning . Blaze King produces both alcove and mobile home installations of Briarwood II Fireplace Insert.

Best price: $1747

 

 

 

 Blaze King the Briarwood II Fireplace Insert Specification

Width  28 3/4”/730mm
Height (top of flue collar) 31”/788mm
Depth  13 1/4”/336.55mm
Shipping Weight
Shroud Dimensions  43”/1092mm x 283/8”/721mm
Mobile Home Approved  No
Combustion Chamber Cu. Ft.  2.1
Flue Size  6”
BTU’s Per Hour  10,600-40,000
Minimum Floor Protection  N A
In Canada  *18” Front/8” Rear
In USA  *16” Front/8” Rear
Door Opening  22” x 11”/559mm x 279mm
Heating Capacity (average) 1,200+ sq. ft. 1,200+ sq. ft.
Wood Length  22”/559mm (left to right loading)
12”/305mm (front to rear loading)
Rear Wall Clearance Minimum
(See Stove Label For Clearances)
EPA Emissions  3.5 gr/hr.
Low Burn Time  6-8 hour

 

Blaze King Wood Stoves

Blaze King Industries was founded at 1977. From the beginning, the company have focused on one simple idea: design super efficient, eco-friendly hearth products, and build them to last. Their growing selection of wood stoves, and inserts are a tribute to good old-fashioned values like quality and safety. Lets take a look on their wood stoves models.

Blaze King THE PRINCESS Wood Stove

Princess Wood stove comes in 3 design variants – Catalytic Models Ultra, Parlor and Classic. Main features of Princess wood stove are :

  • Dual Jet Fan Air System
  • Automatic Thermostat
  • Up to 90,000 Btu’s (see opposite panel for details)
  • Incredible 82.5% Efficiency
  • Optional Gold Plated Doors
  • 1400 Degree Ceramic Glass
  • Optional Variable Speed Dual Fans
  • Temperature Sensor Turns Fans off/on
  • Mobile Home Approved (All Models)
  • Limited-5 Year Warranty PLUS 6 years on Catalytic Combustor

Blaze King Princess Wood Stove Specification

  • Minimum Heat Output 6,400 Btu’s/hr
  • Average High Heat Output 40,000 Btu’s/hr
  • Overall Efficiency 82.5%
  • Emissions 2.42gr/hr
  • Wood Length 16”/20”
  • Low Burn Time 20 Hours
  • Width 27” / 685.8mm
  • Height 34 3/4” / 882.65mm
  • Depth 29” / 736.6mm
  • Weight 430# / 195kg
  • Flue Diameter 6” / 152.4mm