Coal testing equipment laboratory equipment coal coal testing equipment

Hebi City, Cheng professional instrumentation laboratory equipment research and production of coal calorific value conversion formula Qgr.daf (MJ / kg) = 31.45 + 1.09Hdaf Vdaf less than 24% anthracite and bituminous coal: Hdaf = Vdaf / (0.1462Vdaf + 1.1124) bituminous coal : Hdaf = 2.888 + 0.392 (√Vdaf) -0.0023Ad lignite: Lignite: Hdaf = 0.835Vdaf + 1.206 Where: Hdaf = Had × {100 / (100-Mad-Aad)} dry ash-based hydrogen content% Vdaf = Vad × {100 / (100-Mad-Aad)} dry ash free basis volatile yield% Aad = (m1 / m) × 100 where: m1 ---- quality residue, g; m- air-dried coal sample quality, g; Vad = (m1 / m) × 100 air-dried coal volatile base Yield% Mad = (m1 / m) × 100 air-drying water-based coal yield% where: m1 ---- coal After losing quality sample drying, g; m- air-dried coal sample mass, g; Ad = Aad × 100 / (100-Mad) dry basis yield% ash content of coal samples; Website: www.mzjcyq.com Phone: 0392 -2683065