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1、我吓了一跳，蝎子是多么丑恶和恐怖的东西，为什么把它放在这样一个美丽的世界里呢？但是我也感到愉快，证实我的猜测没有错：表里边有一个活的生物Energy ChemicalBing Wang Qinghai University我吓了一跳，蝎子是多么丑恶和恐怖的东西，为什么把它放在这样一个美丽的世界里呢？但是我也感到愉快，证实我的猜测没有错：表里边有一个活的生物1.What should we do about the energy crisis?我吓了一跳，蝎子是多么丑恶和恐怖的东西，为什么把它放在这样一个美丽的世界里呢？但是我也感到愉快，证实我的猜测没有错：表里边有一个活的生物Energy sa
2、vingRenewable EnergyEnergy Storageenergy efficiencyWhich one is the most important?我吓了一跳，蝎子是多么丑恶和恐怖的东西，为什么把它放在这样一个美丽的世界里呢？但是我也感到愉快，证实我的猜测没有错：表里边有一个活的生物Chemical Energy StorageMagnetic Energy Storage. Thermal Energy Storage. Mechanical Energy StorageEnergy Storage System (ESS) can be classified as我吓了一
3、跳，蝎子是多么丑恶和恐怖的东西，为什么把它放在这样一个美丽的世界里呢？但是我也感到愉快，证实我的猜测没有错：表里边有一个活的生物01Mechanical Energy Storage我吓了一跳，蝎子是多么丑恶和恐怖的东西，为什么把它放在这样一个美丽的世界里呢？但是我也感到愉快，证实我的猜测没有错：表里边有一个活的生物 Principle: Energy is stored in the form of Mechanical Energy. Light weight fiber composite materials are used to increase efficiency. Energy
4、 density =0.05MJ/Kg, =0.8Fly Wheels我吓了一跳，蝎子是多么丑恶和恐怖的东西，为什么把它放在这样一个美丽的世界里呢？但是我也感到愉快，证实我的猜测没有错：表里边有一个活的生物Compressed Air Energy StorageOperation: Uses off-peak electricity to compress air and store it in airtight underground caverns. When the air is released from storage, it expands through a combustio
5、n turbine to create electricity.Energy density = 0.22 MJ/Kg, =0.5Advantages and disadvantages:Fast start-up.Draw back - Geological structure reliance 我吓了一跳，蝎子是多么丑恶和恐怖的东西，为什么把它放在这样一个美丽的世界里呢？但是我也感到愉快，证实我的猜测没有错：表里边有一个活的生物Pumped Hydroelectric Energy StorageOperation: It consists of two large reservoirs
6、located at different elevations. During peak demand, water is released from the upper reservoir. If Production exceeds Demand, water is pumped up and stored in the upper reservoir. Pump used is a Combined Motor and Dynamo.Advantages and disadvantages:Most effective with largest capacity of electrici
7、ty (over 2000MW).Energy density = 0.001MJ/Kg, =0.8 Geographical dependence. The capital cost is massive. Soil erosion, land inundation, Silting of dams. 我吓了一跳，蝎子是多么丑恶和恐怖的东西，为什么把它放在这样一个美丽的世界里呢？但是我也感到愉快，证实我的猜测没有错：表里边有一个活的生物02Magnetic Energy Storage我吓了一跳，蝎子是多么丑恶和恐怖的东西，为什么把它放在这样一个美丽的世界里呢？但是我也感到愉快，证实我的猜测
8、没有错：表里边有一个活的生物Principle: At low-temperatures, electric currents encounter almost no resistance. Stores energy in the magnetic field.Environmental friendly and Highly efficient.ReactorSuper CapacitorsPrinciple: The distance between the two charged layers is very small, resulting in a very large capac
9、itanceLong service life, quick charge and discharge我吓了一跳，蝎子是多么丑恶和恐怖的东西，为什么把它放在这样一个美丽的世界里呢？但是我也感到愉快，证实我的猜测没有错：表里边有一个活的生物03Electrochemical Energy Storage我吓了一跳，蝎子是多么丑恶和恐怖的东西，为什么把它放在这样一个美丽的世界里呢？但是我也感到愉快，证实我的猜测没有错：表里边有一个活的生物Lead acid Batterylithium batteryPrinciple: They use a chemical reaction to do wor
10、k on charge and produce a voltage between their output terminals.Energy density is 0.6 MJ/Kg.我吓了一跳，蝎子是多么丑恶和恐怖的东西，为什么把它放在这样一个美丽的世界里呢？但是我也感到愉快，证实我的猜测没有错：表里边有一个活的生物Comparison of different battery energy storage systems我吓了一跳，蝎子是多么丑恶和恐怖的东西，为什么把它放在这样一个美丽的世界里呢？但是我也感到愉快，证实我的猜测没有错：表里边有一个活的生物04 Thermal Energy
11、 Storage我吓了一跳，蝎子是多么丑恶和恐怖的东西，为什么把它放在这样一个美丽的世界里呢？但是我也感到愉快，证实我的猜测没有错：表里边有一个活的生物. A salt hydrate acts as a cool heat sink for the air conditioner working fluid. The stored heat is rejected from the salt hydrate during night to heat the surrounding air.Energy density = 0.25MJ/Kg, =0.8E.g.: Sodium Sulfate
12、 Decahydrate我吓了一跳，蝎子是多么丑恶和恐怖的东西，为什么把它放在这样一个美丽的世界里呢？但是我也感到愉快，证实我的猜测没有错：表里边有一个活的生物 Advantages: No green house gases Not much political dependence More operating time.Disadvantages: Storage of Hydrogen due to highly inflammable nature of H2. High capital cost due to Platinum catalyst used in the proces
13、s.Fuel Cells我吓了一跳，蝎子是多么丑恶和恐怖的东西，为什么把它放在这样一个美丽的世界里呢？但是我也感到愉快，证实我的猜测没有错：表里边有一个活的生物Which is better?1.Comparing one method of energy storage with another is pointless. The reason - None of them are optimal for all purposes2.Flywheels have a narrow range and are not an answer for large scale operations.3
14、.Different storage methods differ in capacity and maximum usable storage time. 4.For large scale storage Underground thermal, pumped hydro and compressed air energy storage systems are preferable. 5.Superconductors can store energy with negligible losses.6.Fuel cells are a viable alternative to petrol engines due to their high efficiency.我吓了一跳，蝎子是多么丑恶和恐怖的东西，为什么把它放在这样一个美丽的世界里呢？但是我也感到愉快，证实我的猜测没有错：表里边有一个活的生物THANK YOU!