METODE ANALISIS ENERGY PERHITUNGAN METODE DIRECT AND INDIRECT (HEAT RATE/TARA KALOR) BAHAN BAKAR BATU BARA DAN PENGARUHNYA PADA PERFORMANCE SISTEM UAP

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This analysis usually applied for bolier system using coal as fuel, Coal as fuel need spesific requirements, Low or high heating value were calculating to know how influens its for performance unit. The Purposes calculating Heat rate of fuel with direct methode its to known input and output because the real this methode just need output (steam) and heat inside (fuel regulating) for evaluate efisiensi of steam, calculating methode was directly calculate coal consumptions with calorie value and divide a both with load output generator.indirect methode or heat loss methode was standar of basics test performance steam Generating, standar system for calculating use British Standard, BS 845:1987 dan USA Standard ASME PTC-4-1 Power Test Code Steam Generating Units. From realtionship of fluenced load grapich with Heat Rate the result of regresi (r) = 0,92 and (r) = 0,97 that shown close relationship and corelated coefisien was negatif (-) that shown for (Direct Methode) and (Indirect Methode).Keywords : Heat rate, direct Methode, Indirect methode