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Calorimetry system

  • US 4,809,190 A
  • Filed: 04/08/1987
  • Issued: 02/28/1989
  • Est. Priority Date: 04/08/1987
  • Status: Expired due to Term
First Claim
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1. A calorimetry system for measuring the heating value of a fuel comprising combustion means into which said fuel and oxidizing gas are fed for converting said fuel into combustion gas, means for mixing said combustion gas with a mixing gas to provide a combined gas, means for measuring the temperature of said mixing gas, and said combined gas at the inlet and outlet of said mixing means, respectively, said oxidizing and said mixing gas being parts of a total gas means for measuring the mass feed rate of said fuel fed into said combustion means, means for measuring the mass flow rate of said total gas, computer means for computing the heat flow Qc of said combustion gas in accordance with the equation ##EQU3## where m1 is the mass feed rate of the fuel, m2 is the mass feed rate of the total gas, T1 is the temperature of said mixing gas at said inlet, and T2 is the temperature of said combined gas at said outlet, and Cpf is the specific heat of said combined gas represented by a polynomial whose coefficients are the weighted sum of coefficients of similar polynomials that represent the specific heat of constituents of the combined gas over the temperature range T2 -T1, and said computer means also having means for computing the heating value of said fuel as the ratio of Qc to m1.

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