Abstract
To determine fuel data for reed canary grass pellets and grains and to investigate their suitability as fuel in smaller furnaces, firing tests have been carried out. The total amount of fuel used was approximately 30 tons. Reed canary grass pellets with a diameter of 8 mm were examined. The water content of the pellets harvested during autumn was rather high (approximately 10%). The material harvested during spring has a water content of approximately 5% and was considered very good quality. The calorimetric heat value for reed canary grass pellets was 18.7 MJ/kg DM (5.2 kWh/kg DM). The values were the same for autumn and spring harvest. However, the difference in water content gave a higher heat values of approximately 4% for the spring harvest (16.3 compared to 15.6 MJ/kg tot). Mixing with wood increased the heat value in relation to the proportion of wood. The ash content was somewhat higher for the material harvested during spring (5.4%) compared to autumn (4.7%). The melting point of the ash increased from 1010 degrees C to 1370 degrees C between autumn and spring harvest. Emission of carbon dioxide, CO, given as mean values during periods of three hours, showed great variations. The
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Citation Formats
Praks, O.
Investigation of a straw combustion system for chopped straw; Undersoekning av ett halmeldningssystem foer hackad halm.
Sweden: N. p.,
1993.
Web.
Praks, O.
Investigation of a straw combustion system for chopped straw; Undersoekning av ett halmeldningssystem foer hackad halm.
Sweden.
Praks, O.
1993.
"Investigation of a straw combustion system for chopped straw; Undersoekning av ett halmeldningssystem foer hackad halm."
Sweden.
@misc{etde_10122374,
title = {Investigation of a straw combustion system for chopped straw; Undersoekning av ett halmeldningssystem foer hackad halm}
author = {Praks, O}
abstractNote = {To determine fuel data for reed canary grass pellets and grains and to investigate their suitability as fuel in smaller furnaces, firing tests have been carried out. The total amount of fuel used was approximately 30 tons. Reed canary grass pellets with a diameter of 8 mm were examined. The water content of the pellets harvested during autumn was rather high (approximately 10%). The material harvested during spring has a water content of approximately 5% and was considered very good quality. The calorimetric heat value for reed canary grass pellets was 18.7 MJ/kg DM (5.2 kWh/kg DM). The values were the same for autumn and spring harvest. However, the difference in water content gave a higher heat values of approximately 4% for the spring harvest (16.3 compared to 15.6 MJ/kg tot). Mixing with wood increased the heat value in relation to the proportion of wood. The ash content was somewhat higher for the material harvested during spring (5.4%) compared to autumn (4.7%). The melting point of the ash increased from 1010 degrees C to 1370 degrees C between autumn and spring harvest. Emission of carbon dioxide, CO, given as mean values during periods of three hours, showed great variations. The autumn harvest gave the highest emission values, in some cases very high, about 8000 mg/m{sup 3}n. Also the values for the spring harvest were very high. The emissions of NO{sub x} were relatively small and had a rather even level. Firing tests with grain used winter-wheat and early spring barley. Both kinds of grain were well rinsed and dry with 11.3 and 12.4% water content respectively. The calorimetric and effective heat values were on the same level as for reed canary grass and straw. The ash content was rather low, 2.1-2.5% of DM. The sulphur content was 0.13 and 0.14% respectively. The ash temperature at the beginning of the melting showed a big difference between wheat and barley.}
place = {Sweden}
year = {1993}
month = {Dec}
}
title = {Investigation of a straw combustion system for chopped straw; Undersoekning av ett halmeldningssystem foer hackad halm}
author = {Praks, O}
abstractNote = {To determine fuel data for reed canary grass pellets and grains and to investigate their suitability as fuel in smaller furnaces, firing tests have been carried out. The total amount of fuel used was approximately 30 tons. Reed canary grass pellets with a diameter of 8 mm were examined. The water content of the pellets harvested during autumn was rather high (approximately 10%). The material harvested during spring has a water content of approximately 5% and was considered very good quality. The calorimetric heat value for reed canary grass pellets was 18.7 MJ/kg DM (5.2 kWh/kg DM). The values were the same for autumn and spring harvest. However, the difference in water content gave a higher heat values of approximately 4% for the spring harvest (16.3 compared to 15.6 MJ/kg tot). Mixing with wood increased the heat value in relation to the proportion of wood. The ash content was somewhat higher for the material harvested during spring (5.4%) compared to autumn (4.7%). The melting point of the ash increased from 1010 degrees C to 1370 degrees C between autumn and spring harvest. Emission of carbon dioxide, CO, given as mean values during periods of three hours, showed great variations. The autumn harvest gave the highest emission values, in some cases very high, about 8000 mg/m{sup 3}n. Also the values for the spring harvest were very high. The emissions of NO{sub x} were relatively small and had a rather even level. Firing tests with grain used winter-wheat and early spring barley. Both kinds of grain were well rinsed and dry with 11.3 and 12.4% water content respectively. The calorimetric and effective heat values were on the same level as for reed canary grass and straw. The ash content was rather low, 2.1-2.5% of DM. The sulphur content was 0.13 and 0.14% respectively. The ash temperature at the beginning of the melting showed a big difference between wheat and barley.}
place = {Sweden}
year = {1993}
month = {Dec}
}