![](http://www.alamy.com/thumbs/6/FA1E6C02-885A-4573-92FE-D8B6846BA1CC/2KF7GHP.jpg)
Wooden pellets and thermostatic valve on the wooden background.
Size: 6720px × 4480px
Photo credit: © Jiri Hera / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: alternative, bio, biofuel, biological, biomass, brown, burn, closeup, compressed, control, cylinder, eco, ecologic, ecological, ecology, economy, energy, environment, environmental, fire, firewood, fuel, granule, heap, heat, heater, heating, nature, particle, pellet, pile, pine, power, radiator, renewable, temperature, thermal, thermostat, thermotatic, valve, warm, winter, wood, wooden