PHYTECH 134
(Heat and energy)
, CALORIMETER
• A calorimeter is an insulated container that enabled the careful
measurement of heat. The calorimeter is designed to minimize the
heat flow to or from the surroundings.
• The heat value of a fuel is the amount of heat released during its
combustion. Also referred to as energy or calorific value, heat
value is a measure of a fuel's energy density, and is expressed in
energy (joules) per specified amount ex. Kj/kg
,BOMB CALORIMETER
• A typical constant volume calorimeter, called a bomb calorimeter,
consists of a hollow aluminum cylinder of known mass containing
of known quantity of water; the cylinder is inside a larger
aluminum cylinder with insulated walls. An evacuated space
separates the two cylinders. An insulated lids fits over the opening
of the cylinders; often there are two small holes in the lid, one for
a thermometer to be inserted into the contents of the inner
cylinder and one for a stirring device to help the contents reach
equilibrium faster
,
(Heat and energy)
, CALORIMETER
• A calorimeter is an insulated container that enabled the careful
measurement of heat. The calorimeter is designed to minimize the
heat flow to or from the surroundings.
• The heat value of a fuel is the amount of heat released during its
combustion. Also referred to as energy or calorific value, heat
value is a measure of a fuel's energy density, and is expressed in
energy (joules) per specified amount ex. Kj/kg
,BOMB CALORIMETER
• A typical constant volume calorimeter, called a bomb calorimeter,
consists of a hollow aluminum cylinder of known mass containing
of known quantity of water; the cylinder is inside a larger
aluminum cylinder with insulated walls. An evacuated space
separates the two cylinders. An insulated lids fits over the opening
of the cylinders; often there are two small holes in the lid, one for
a thermometer to be inserted into the contents of the inner
cylinder and one for a stirring device to help the contents reach
equilibrium faster
,
