Kob Pyrtec Brochure - Energy Systems Research Unit

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All rigths reserved for technical changes 02/05Werbeagentur NagelGrate Firing
The bestprice for heat.Wood as a fuel is the most significant renewableenergy world-wide. With sustainable forestmanagement on the one hand and optimisation ofyour systems on the other, you secure your energyfuture.Heat requirementHeat output / Load typesHeat output, consumerskWAnnual curve1000 200055008400a.b.c.Typical case of loading in central Europeh/aThe wood-powered boilercan be designed for themaximum load (monovalent)or for the main orbase load (bivalent). Thesmaller the boiler output,the longer the operatingtime and also, however,the higher the stress onthe boiler.Heat output, generator100%Peak loadLoad typesa. Maximum loadb. Main load50c. Base loadLow-load proportion0a b ch/a1000 200055008400Area: Proportion of wood power, kWh/a (from 0 to c, b ,a)a) Heating for a single building;heating period: approx. 5,400 hb) Heating and hot water for a single building;year-round operationc) Heating & hot water via district heating network,year-round operation or heat production adds upto heat consumption plus network lossesTotal area: thermal energy to be produced■ Effective heat in kWh/a■ Network losses in kWh/aLoad System type Coverage of heat Hours of full Coverage by woodtype output [% of kW] operation [h/a] power [% of kWh/a]a) 1 stand alone 100 approx. 1750 100b) 2 base load 75 approx. 2500 approx. 97c) 2 base load 50 approx. 3600 approx. 70Other termsLow loadBoiler output below 30% of rated loadHeat availability System‘s delivery of heat during heating period [%]Boiler availability Operating time of the boiler during heating period [%]Track timeOperating hours between maintenance breaks [h]Redundancy Boiler output installed for reliability (boiler failure)Boiler systemsaacbca1 a2 c1) Monovalent- One wood-powered boiler (a) formaximum load- Heat availability: approx. 98-99%2) Bivalent- Wood-powered boiler (a) for base load- Oil or gas boiler for (b) peak load,low load and for redundancy- Heat availability: 99.5 to 99.9%3) Double-boiler system- Maximum load with two woodpoweredboilers (a1, a2)- Heat availability: approx. 99.6%- a1 & a2 alternately, peak load andbase load for split-up, 2 x 50%Advantages of heat accumulators (c)■ Boosts heat availability■ Coverage of brief peak requirements■ Optimises the connection of additional boilers■ Acceptance of excess heat when the heat is stopped■ Hydraulic separation: boiler system / consumersAdvantages of double-boiler system■ 100% sustainable wood energy■ Excellent controllability■ Maximum heat availability■ Gentle boiler operationEconomic efficiency / Heat costs, E/kWhThe aim of optimising systems is to minimise the expected heat costs (E perkWh).47% 10%26% 17%Example: Package boiler of approx.1,000 kW for large single building ormini-network with forest woodchipsConclusionThe heart of the biomass system, thefurnace, is only party to 10% of theheat costs. However, the furnacetogether with its degree of efficiency(fuel consumption), and the regularoperating costs decides the economicefficiency of the overall system!Breakdown of heat costs as a %/kWh■ Service of capital for furnace 10%■ Service of capital for remaining investment 26%Service of capital for total investment (10 yrs.) 36%■ Fuel – wood 47%■ Operation with full maintenance 17%Regular operation 64%Thus our recommendationOptimise your heat costs with aneffective boiler. The extra investmentthis requires will quickly pay for itself.With the PYRTEC furnace system youensure the economic efficiency of yourbiomass heating system and thusprofits for yourself!
Page 1: Competent.The headquarters of KÖB
Page 5 and 6: Made-to-measure energy.For all wood
Page 7 and 8: Controlled & optimised.PyrocontrolC

Kob Pyrtec Brochure - Energy Systems Research Unit

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