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HomeMy WebLinkAboutOffer, 105 kWe 420 kWth 1 OFFER CONCERNING DELIVERY OF A WOOD CHIPS FUELLED UPDRAFT GASIFIER BASED STIRLING-ENGINE CHP PLANT 1. General This document contains an offer for the delivery of a wood chips fuelled, updraft gasifier based Stirling-engine CHP plant with a 600 kW updraft gasifier and three (3) 35 kWe Stirling engines. The offer contains a description of the proposed plant configuration, a description of the scope of supply, time schedule, price, and payment- and delivery conditions. 2. Description of Plant The proposed plant has a combustion system which consists of a 600 kW updraft gasifier which is fed by up to 600 kW wood chips with a moisture content from 25 - 55%. The gasifier delivers gas at a temperature of around 70°C to three (3) combustion chambers which are each situated above a 35 kWe Stirling engine. The gas is ignited in the combustion chambers, heating the Stirling engines by the flue gases, whereby electricity is generated. The hot flue gases are directed through air pre-heaters which heat up the combustion intake air in order to increase the combustion temperature in the combustion chambers. The remaining energy in the flue gases is used to heat the cooling water up to 85°C via an economizer. The plant is fully automated and is controlled by a plc with data collection. Main data Electrical output: 105 kWe Heat production: 420 kW Fuel input: 600 kW Fuel consumption: approx. 210 kg/hour (at 45% humidity) 3. Scope of Supply SD’s scope includes: • Detailed design of the plant, including 2D and 3D layout drawings, PI-diagrams, etc. • Installation guidelines • One (1) 600 kW updraft gasifier • Three (3) 35 kWe Stirling engines with heaters and engine control systems • Three (3) combustion chambers with integrated air pre-heaters • Burners • Economizer unit • Wood chips conveyor from wood chips pit to top of updraft gasifier • All necessary valves, dampers, and blowers • Ash screw conveyor and 200 litre container for ash • Electrical panels 2 • Control and instrumentation • Flanges for connection points to district heating (water) system • Participation of Stirling DK supervisor in test and commissioning • Training of local personnel to handle daily operations. The following is not included in SD’s scope of supply: • Civil works • Wood chips storage and feeding system (ending with wood chips pit) • Chimney • Mechanical erection • Piping and insulation • Electrical installation • Fuel for testing of plant • Connection from plant main electrical panel to grid • Delivery of components to Site 4. Price SD offers the above mentioned plant for a price of 665,000 EUR, excluding VAT: 5. Time Schedule Based on a contract signature before 1st June 2009, the time schedule is as follows: Delivery of updraft gasifier: September 2009 Delivery of combustion chambers: September 2009 Delivery of other plant components: October 2009 Delivery of Stirling engines: December 2009 6. Guarantees A two year guarantee on all components delivered by SD is provided up to a maximum of 10,000 hours of operation. The guarantee is only valid if the plant has been operated in accordance with the specified operating parameters, including water temperatures, quality of wood chips, etc. For standard components, such as valves and pumps, the normal guarantee of the OEM-supplier is valid. The guarantee does not include possible damages which might occur as a consequence of the plant not being operated according to the operation manual or, if in any other way, the plant has been mishandled. SD covers all expenses in connection with guarantee repairs, including the transport of the parts to the plant and the installation of the new parts. The guarantee does not cover the possible loss of production revenue. 3 7. Service Engines Piston rod seals and bearings should be exchanged every 4,000 hours of operation. In addition to these regular 4,000 hour services, there is one major service after 50,000 hours of operation. Costs for engine services are: • 5,000 EUR/engine Furthermore, a few times a year, the heater surfaces need to be cleaned. The normal cleaning interval is 4,000 hours but it can vary quite a lot depending on the quality of the wood chips and misc. operating factors. It is a very simple process to clean the heaters and that the engine does not need to be disassembled for this purpose. Combustion System Service of the combustion system is not included. Screw conveyors, burners, dampers, valves, etc., will experience wear and tear like a traditional wood chips based heat plant. 8. Payment Terms Down-payment: 25% Delivery of updraft gasifier: 15% Delivery of combustion chamber no 1: 10% Delivery of combustion chamber no 2: 10% Delivery of combustion chamber no 3: 10% Delivery of Stirling engine no 1: 10% Delivery of Stirling engine no 2: 10% Delivery of Stirling engine no 3: 10% 9. Delivery Conditions Ex. Works, Lyngby, Denmark 10. Validity of Offer This offer is valid until 1st June 2009.