Engineering & Materials Science
Liquid nitrogen
100%
Energy storage
98%
Thermal energy
89%
Phase change materials
86%
Heat storage
76%
Temperature
71%
Cooling
71%
Cryogenic energy storage
70%
Computational fluid dynamics
57%
Air conditioning
54%
Foundry sand
52%
Brayton cycle
48%
Power generation
48%
Waste heat
47%
Hot Temperature
43%
Waste heat utilization
41%
Renewable energy resources
40%
Air
35%
Cooling systems
35%
Heating
31%
Cryogenic equipment
30%
Cryogenics
29%
Composite materials
28%
Electricity
28%
Latent heat
28%
Energy utilization
28%
Air engines
26%
Sodium nitrate
25%
Sorption
24%
Paraffins
20%
Thermodynamics
20%
Heat sinks
19%
Temperature control
17%
Ray tracing
17%
Engines
17%
Nitrogen
16%
Charging time
16%
Liquids
16%
Silica gel
14%
Demonstrations
14%
Energy efficiency
14%
Optical losses
14%
Packed beds
14%
Quartz
13%
Fossil fuels
13%
Melting point
12%
Working fluids
12%
Stirling engines
12%
Global warming
11%
Recycling
11%
Earth & Environmental Sciences
energy storage
98%
air conditioning
43%
liquid
33%
air
24%
energy
24%
heat storage
24%
exergy
23%
valorization
21%
wind power
21%
material
20%
alternative energy
19%
power generation
18%
electricity
17%
cooling
16%
energy consumption
16%
experimental study
14%
heating
12%
salt
12%
circular economy
11%
temperature
11%
sand
11%
byproduct
11%
nitrogen
10%
heat transfer
10%
heat capacity
10%
environmental hazard
10%
fluid
10%
demand
10%
melting
9%
thermal conductivity
9%
renewable energy source
9%
waste heat
9%
heat source
9%
surplus
8%
rate
8%
supply and demand
7%
energy supply
7%
fertilizer
7%
energy demand
7%
industrial waste
7%
battery
7%
dam
6%
heavy metal
6%
thermodynamics
6%
geometry
6%
price
5%
irradiance
5%
analysis
5%
industry
5%
cavity
5%
Physics & Astronomy
heat storage
52%
energy storage
40%
phase change materials
29%
waste heat
25%
foundries
23%
liquid air
23%
turbulent flames
22%
latent heat
22%
premixed flames
21%
burners
20%
sorption
20%
sands
19%
beds
17%
grade
15%
recovery
14%
slits
13%
composite materials
12%
augmentation
11%
equivalence
10%
natural gas
9%
air
8%
outlets
8%
flux density
8%
costs
7%
generators
6%
clays
5%
flame stability
5%
turbulence
5%
energy
5%