A furnace is fired with fuel oil containing 86% C, 1%N, and 0.1%S with a calorific value of 46.4 MJ/kg. Air is supplied at 25°C, 740 mmHg and saturated with water. Average analysis of the stack gas shows 10.62% CO2, 1.17% CO, 6.34% 02 and 81.87% N2. The stack gas leaves at 400°C and 765 mmHg. Calculate: a. % excess air b. complete analysis of fuel oil c. m^3 air/kg oil

A food product containing 80% moisture content is being frozen. Estimate the specific heat of the product at -8 ° C when 82% of the water is frozen. The specific heat of the dry product is 2.5 kJ / (kg ° C). it is assumed that the specific heat of water at -10 ° C is the same as the specific heat of water at 0 ° C, and the specific heat of ice follows the function Cp es = 0.0062 Tbeku + 2.0649. Cp frozen product = AnswerkJ / kg ° C.

Number 1A food product containing 80% moisture content is being frozen. Estimate the specific heat of the product at -6°C when 82% of the water is frozen. The specific heat of the dry product is 2.5 kJ/(kg°C). It is assumed that the specific heat of water at -10°C is the same as the specific heat of water at 0°C, and that the specific heat of ice follows the function Cp es = 0.0062 Tbeku + 2.0649. identify :a. Cp frozen product = Answer in kJ/kg°C

Number 1A food product containing 82% moisture content is being frozen. Estimate the specific heat of the product at -8°C when 82% of the water is frozen. The specific heat of the dry product is 2,5 kJ/(kg°C). It is assumed that the specific heat of water at -10°C is the same as the specific heat of water at 0°C, and that the specific heat of ice follows the function Cp es = 0.0062 Tbeku + 2.0649. identify :a. Cp frozen product = Answer in kJ/kg°C