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Abstract

The purpose of the project has been to improve the efficiency of straw furnaces by cooling down the flue gas below dew point and thus make the upper calorific value of straw a realistic target for energy utilization. The heat exchanger to be used is a gas scrubber. The course of the project has been: a) Basic experiments with gas scrubbers as heat exchangers for very hot air. b) Design, construction and test of a prototype flue gas scrubber for a commercial straw furnace. The scrubber improved the efficiency from 70% to 90% of the lower calorific value of the straw supplied. No major problems were found. c) Design, construction and test of a special straw conbustor i.e. a cyclone furnace with the flue gas scrubber as sole heat exchanger. This system is cheap and has, compared to other furnaces a high efficiency (approximately 79%). Apart from being an efficient heat exchanger the scrubber reduces the particle emission by 80-90%.

Additional information

Authors: NIELSEN H K JORDBRUGSTEKNISK INSTITUT, INSTITUTE OF AGRICULTURAL ENGINEERING, ROYAL VETERINARY AND AGRICULTURAL UNIVERSITY, TASTRUP (DENMARK), JORDBRUGSTEKNISK INSTITUT, INSTITUTE OF AGRICULTURAL ENGINEERING, ROYAL VETERINARY AND AGRICULTURAL UNIVERSITY, TASTRUP (DENMARK)
Bibliographic Reference: EUR 9823 EN (1985) MF, 61 P., BFR 150, BLOW-UP COPY BFR 305, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
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