The Heat Engine Lab DOWNLOAD TO GET A+

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In this experiment, the heat engine consists of an aluminum canister connected by tubing to a piston. The work is done by the air inside the system which expands when it is immersed in hot water. Th... e expanding air pushes on a piston and does work by lifting a weight. The heat engine cycle is completed by immersing the can in cold water, which returns the air pressure and volume to the starting values. A The theoretical maximum efficiency of a heat engine depends only on the temperature of the hot reservoir TH and the temperature of the cold reservoir TC . The maximum efficiency is given by e max=(1−T TC H)× 100 (1) The actual efficiency is defined as e= WQH × 100 (2) where W is the work done by the heat engine on its environment and QH is the heat extracted from the hot reservoir. We will use Equations 3-5 below to analyze our heat engine. According to the First Law of Thermodynamics, ΔU=Q−W (3) where ΔU is the change in internal energy of the gas, Q is the heat added to the gas ( Q is negative when heat is removed), and W is the work done by the gas ( W is negative when work is done on the gas). 7/8/2015 1:53 PM The Heat Engine Lab 20 1P H Y S I C S L A B O R A T O R Y M A N U A L You may recall that the equation relating the heat to the temperature change for a substance of heat capacity C is [Show More]

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