5-1 Conservation of mass 5-2 flow work and the energy of a flowing fluid 5-3 energy analysis of steady flow systems 5-4 some steady-flow engineering devices

In the chapter we shall introduce the study of circuits characterized by a single energy-storage element--a capacitor or a inductor. It will be shown that the equations describing such a circuit may be put in a form involving an unknown variable and its first derivative. Such an equation is referred to as a first-order differential equation, thus we shall refer to circuits which contain only a single energy-storage element as first-order circuits

The set of variables is a hybrid set that may include both currents and voltages. They are the inductor currents and the capacitor voltages. Each of these quantities may be used directly to express the energy stored in the inductor or capacitor at any instant of time. They collectively describe the energy state of the system. They are called the state variables

–场和电荷系统的 能量守恒定律 –电磁场能量密度 和能流密度 –电磁能量的传输

The surplus amino acids in animals can be completely oxidized or converted to other storable fuels Amino acids in excess (from diet, protein turnover) can neither be stored, nor excreted, but oxidized to release energy or converted to fatty acids or glucose. Animals also utilize amino acid for energy generation during starvation or in diabetes mellitus

1. Unit 1 Life and logic Text A Love and logic: The story of a fallacy 2. Unit 2 Secrets to beauty Text A The confusing pursuit of beauty 3. Unit 3 Being entrepreneurial Text A Fred Smith and FedEx: The vision that changed the world 4. Unit 4 Nature: To worship or to conquer Text A Achieving sustainable environmentalism 5. Unit 5 Why culture counts Text A Speaking Chinese in America 6. Unit 6 Gender equality Text A The weight men carry 7. Unit 7 Energy and food crises Text A The coming energy crisis

Characteristics of Digestive System Taking in energy sources Digestion energy tissue absorptionwaste Numerous organs

HEAT EXCHANGER NETWORK SYNTHESIS 1: TARGETING OBJECTIVES: 1 Determine the minimum energy inputs required for a process 2Determine the minimum number of heat exchangers required to transfer this energy 3Develop a methodology for determining where these heat exchangers should be placed in the process

1、流体机械能量分析 流体机械能量分析 Energy transfer Energy transfer 2、容积损失 Leakage loss Leakage loss 3、机械损失 Mechanical loss Mechanical loss 4、水力损失 Hydraulic loss Hydraulic loss 5、效率 Efficiency Efficiency

5.2 Translation between Work and Heat 5.3 Entropy and Entropy Change 5.4 Ideal Work，Lost Work and Thermal Efficiency 5.5 Available energy and unavailable energy