NEnergy storage

Question 1

2 reasons we have energy storage

Answer 1

-Energy production rates can be kept constant
-Allows surplus energy from intermittent energy resources to be stored until it is required , shortages

Question 2

3 Causes of fluctuation in energy supply

Answer 2

-weather
-season
-time of day

Question 2

3 new energy storage technologies

Answer 2

-peak shaving HEP
-Rechargeable batteries , factors affecting viability include recharging speed and energy density
-compressed gas , surplus energy can be used to drive a pump that compresses air , this also produces a lot of heat which can be stored in molten salt

Question 3

2 types of storage systems

Answer 3

-Molten salt , thermal store , good as it can store higher temperatures and needs less pressure so cheaper
-High thermal mass buildings such as those made with concrete , warm up and cool down comparatively slowly which will reduce costs of heating and air conditioning