建筑环境与设备工程专业英语教案.pptVIP

Technical English;General Information;Course grade formula (5 level score) Total Score = 1 (class attendance) + 1 (class performance) + 3 (final course report) Final course report is translation of couple of paragraphs from technical article in English (ASHARE HANDBOOK).;Main Teaching Material;Chapters in the ASHRAE Handbook are updated through the experience of members of ASHRAE Technical Committees and through results of ASHRAE Research reported at ASHRAE meetings and published in ASHRAE special publications and in ASHRAE Transactions.; SECTION 1.0—FUNDAMENTALS AND GENERAL 1.1 Thermodynamics and Psychrometrics 1.2 Instruments and Measurement 1.3 Heat Transfer and Fluid Flow 1.4 Control Theory and Application 1.5 Computer Applications 1.6 Terminology 1.7 Business, Management, and General Legal Education 1.8 Mechanical Systems Insulation 1.9 Electrical Systems 1.10 Cogeneration Systems 1.11 Electric Motors and Motor Control 1.12 Moisture Management in Buildings ;SECTION 3.0—MATERIALS AND PROCESSES 3.1 Refrigerants and Secondary Coolants 3.2 Refrigerant System Chemistry 3.3 Refrigerant Contaminant Control 3.4 Lubrication 3.6 Water Treatment 3.8 Refrigerant Containment;The net change of entropy of any refrigerant in any cycle is always zero. In Example 1, the change in entropy of the refrigerated space is ΔSR = ?125/250 = ?0.5 kJ/K and that of the atmosphere is ΔSo = 125/250 = 0.5 kJ/K. The net change in entropy of the isolated system is ΔStotal= ΔSR + ΔSo = 0.;The Carnot cycle in the figure below shows a process in which heat is added and rejected at constant pressure in the two-phase region of a refrigerant. Saturated liquid at state 3 expands isentropically to the low temperature and pressure of the cycle at state d. Heat is added isothermally and isobarically by evaporating the liquid-phase refrigerant from state d to state 1. The cold saturated vapor at state 1 is compressed isentropically to the high temperature in the cycle at state b. Ho