Integrated Biomass Energy System (IBES) - Biomass boiler, steam - - PowerPoint PPT Presentation

Integrated Biomass Energy System (IBES)

• Biomass boiler, steam engine and generator integrated into a single unit
• Measures 1.5m*1.5m*1.7m (W*D*H) and weights only 400kg
• Simple, reliable and compact
• Fueled from renewable sources
• Producing 10.6kW of electrical power
• Additional 25kW of heat (hot water)
• Burns virtually any type of biomass
• Automatic fuel feed
• 1kg of biomass = 1kWh of energy (rule of thumb)

Typical use of IBES

Power distribution Generator and Power Regulator

Generation of 10kW can support up to 40 households with a continuous consumption of 250W. This is enough to power 7*7W LED lights, a smartphone charger, a radio, a ceiling fan and a fridge or TV

Biomass Silo and feed Furnace: Steam and Hot Water Steam Engine

#1 #n #3 #40 #2

Fue Fuel

• Woody biomass, incl. sawdust: Up to 4

inches long with up to 35% humidity.

• Corn / grain Less than 35% humidity
• Agricultural field residue: Up to 4

inches long and up to 35% humidity. Hot water outlet Additional energy, in the form of hot water, is available to power f.ex. a household radiator, absorption chiller, desalination unit etc. Mic icrocomputer con

• ntrol

The microcomputer continuously monitors the heat demand and adjusts the output

• f the furnace accordingly, taking into

consideration a wide set of parameters to maintain efficient and safe operations at all times. Ash System / Biochar The furnace is equipped with an automatic ash extraction system conveying ashes from the combustion process out of the furnace into an external container. Fuel Feed System The microcomputer controlled and auger based fuel feed system is designed to handle rough wood chips up to four inches long. The fuel feed system also is part of the safety system as the auger creates a physical separation between the combustion side and the storage side. Oxygen Trim Based on O2 readings the microcomputer increases or decreases the amount of fuel fed to the burner at the current output level. Cell Phone Text Message Notifications The system is equipped with a Cell Phone module which will send a text message to a preconfigured number notifying the responsible operator that attention is required. The Cyclone Engine is a Rankine Cycle heat regenerative external combustion engine, otherwise known as a “Schoell Cycle” (from Cyclone’s founder Harry Schoell) engine. It creates mechanical energy by heating and cooling water in a closed-loop, piston-based engine system. Generator The generator is of a vary compact design, also referred to as a “pancake” generator. It

• utput 10.6kW by means of 120/240/380V

IBES Tech Specs

REFO biomass boiler

• Designed by 3R Design in Denmark
• Compact (1.5m*1.5m*1.7m) and <400kg
• Proven reliability (25 years in the market)
• Microcomputer control-system with very user friendly

display

• Burns all sorts of biomasses
• Cutting rotary valve can handle chunks up to 10cm long
• Designed to need minimal maintenance
• High efficiency (>93%)
• Extended autonomy by means of hopper and automated

fuel feed

Rotary valve Boiler

Fuel type & source Lower Heating Value/Net Calorific Value MJ/kg kWh/kg Agricultural Residues

Corn stalks/stover 18.10 5.03 Sugarcane bagasse and wheat straw 17.90 4.97 Hulls, shells, prunings 20.50 5.69 Rapeseed cake 22.00 6.11 Sorghum stalks etc 14.00 3.89 Coffee husks 14.50 4.03

Herbaceous Crops

Miscanthus and Switchgrass 18.10 5.03 Other grasses 17.30 4.81 Bamboo 19.80 5.50

Woody Crops

Black locust 18.46 5.13 Eucalyptus and Hybrid poplar 17.96 4.99 Willow 18.40 5.11

Manure

Chicken 15.00 4.17 Cow 10.00 2.78

Forest Residues

Hardwood and Softwood wood 20.70 5.75

Urban Residues

Municipal Solid Waste (MSW) 18.60 5.17 Newspaper 20.70 5.75 Corrugated paper 17.00 4.72 Waxed cartons 25.30 7.03

Heat Content Ranges for various biomass fuels (dry weight)

Cyclone steam engine

• Developed by Cyclone Power technologies in the USA
• Very compact design: 80cm diameter, weights 100kg
• Electrical output of 10,6kW
• Closed loop system. No need to refill water
• All moving parts lubricated by water; no need for oil
• Very silent, equivalent to the cooling fan on a car

Heat exchanger (Transfer energy from boiler to engine) Steam engine

Generator

• Very compact design. Also referred to as “Pancake” generator
• Measures 50cm*50cm*50cm and weights under 50kg
• 120/240V 1 Phase; 380V 3 Phase output

Why biomass?

– Burning biomass, such as crop waste and wood pellets emits the same amount

• f CO2 as is absorbed while the plants were growing. Therefore, biomass is classed

as carbon-neutral renewable energy. – Household waste consist of over 60% organic, combustible mass – Biomass has the potential to meet all power needs globally – Use garbage to generate electricity instead of depositing in landfills. – Can create jobs and activities