Question

calorific value of wood is 18000 kj/kg .how much wood is required to produce 240000 kj of heat energy.​

Answer 1

Answer:

13.33 kg (approx.)

Explanation:

Calorific value = 18000 kj/kg

Heat produced = 240000 kj

Therefore,

Mass of fuel = 240000 /18000 kg

= 13.33 kg (approx.)

Answer 2

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Given :-

• Calorific value of wood = 900 KJ/Kg
• Heat energy = 1800 KJ

To Find :-

• Total wood required

Solution :-

• Here, Calorific value is given and heat energy to be produced is given and we have to find wood required.

Point to be noted :

• Here to find wood it has used much. Therefore it cannot be in number. So, we will find its weight.

Calculation :

$\star{\boxed{\boxed{ \sf \: \red {wood \: required \: = \frac{heat \: energy}{Calorific \: value}} }}} \star$

$\sf \: wood \: required \: = \dfrac{1800}{900}$

$\huge \pmb{ \sf\: wood \: required \: = 2 \:}$