Bomb Calorimeter:A type of calorimeter that measures the heat of combustion for a particular reaction. Named so because it is sealed like a "bomb" which prevents matter from entering or exiting during the reaction.
Constant-Pressure Calorimeter:This type of calorimeter is designed to operate at constant pressure, typically atmospheric pressure. It's often used when dealing with gases that expand during the reaction.
Coffee Cup Calorimeter: A simple type of constant-pressure calorimeter that uses two Styrofoam cups nested together with a lid on top to insulate the system and keep pressure constant.