The Transfer of Heat
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Chapter 5 – Lesson 2 Extra Credit The Transfer of Heat 
An automobile engine would not be able to run for very long if it did not have a cooling system. Read the passage and examine the diagram to answer the questions. Radiating Heat Internal combustion engines transform thermal energy to mechanical energy. Unfortunately, not all of the thermal energy produced by the burning of the mixture of fuel and air can be used to move the pistons. Some of the heat produced just heats the engine, and that can create problems. If an engine gets too hot, the oil that lubricates the moving parts will burn. Also, engines have some parts that will be destroyed if they get too hot. A solution is to build a cooling system to carry heat away from the engine. The simplified diagram below shows a cooling system for an automobile engine. Arrows indicate the direction of movement of cooling fluid. Internally, the radiator is a series of flattened pipes that the cooling fluid moves through. The flattened pipes provide a very large surface area over which outside air flows. 
1. Where is the cooling fluid hotter, in tube A or in tube B? Explain why. 2. Heat moves from material having more thermal energy to material having less thermal energy. Into what material does heat from the hot cooling fluid go? 3. What is the function of the radiator? 4. The pump moves fluid from the radiator into the engine. What might happen to the engine if the pump stopped working? Directory: faculty faculty -> Dsci 3870: Management Science faculty -> Handling Indivisibilities faculty -> Course overview faculty -> Curriculum vitae wei chen professor faculty -> Digital image warping faculty -> Samples of Elements Exam Question III contains All Prior Exam Qs III except faculty -> 【Education&Working Experience】 faculty -> References Abe, M., A. Kitoh and T. Yasunari, 2003: An evolution of the Asian summer monsoon associated with mountain uplift —Simulation with the mri atmosphere-ocean coupled gcm. J. Meteor. Soc. Japan, 81 faculty -> Ralph R. Ferraro Chief, Satellite Climate Studies Branch, noaa/nesdis faculty -> Unit IV text: Types of Oil, Types of Prices Grammar: that/those of, with revision Download 24.42 Kb. Share with your friends:
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