水利水电工程专业英语.doc

Specialized English
for
Graduates of 2011
Contents
1 HYDROPOWER PLANT 1
Hydropower 1
Advantages of Hydropower 1
Disadvantage of a Hydroplant 2
Multi-Purpose Uses 2
Irrigation 2
Flood control 2
Navigation 2
Recreation 2
Fish Breeding 3
ponents of a Hydroelectric Plant 3
Dam or Barrage 3
Water-Conduit System 3
Power House 3
Tail Race 3
Electrical Power Transmission 4
Classification of Hydroelectric Plants 4
Base-Load and Peak-Load Plants 4
Plants can also be classified as follows: 4
Classification on the Basis of Available Heads 7
2 HYDRAULIC TURBINES 10
Introduction 10
Sub-systems of a Water Turbine 10
Classification of Water Turbines 10
Pelton Turbine 12
Injector 12
Runner 12
Number of Nozzles 13
Distributor 14
Casing 15
Jet Brake 16
Tail Water Depressor System 16
Francis Turbine 17
ponents 18
Scroll Case 18
Stay Vanes Ring 18
Guide Vanes Mechanism 19
Runner 19
Draft Tube 21
Head Cover 22
Bottom Ring 22
Shaft 22
Turbine Pit Liner 23
Dewatering of Turbine 23
Propeller and Kaplan Turbine 23
Introduction 23
Improvement in Efficiency 24
ponents of the Runner 24
Location of Servomotor 25
Scroll Case 26
Automatic Air Valves 26
Shaft of the Hydrounit 26
Over-speed Protective Devices 27
Deriaz Turbine 27
Introduction 27
Servomotor 29
3 HVAC 30
Background 30
Heating 31
Ventilation 33
Mechanical or forced ventilation 33
Natural ventilation 34
Airborne Illnesses 34
Air conditioning 34
Energy efficiency 36
Heating energy 36
Geothermal Heat Pump 37
Ventilation Energy recovery 37
Air conditioning energy 37
Air Filtration and Cleaning 37
Cle