Photosynthesis converts less than 0.5% of incoming solar radiation into new phytomass. The best annual fuelwood productivity of traditional fast-growing species (poplars, eucalyptus, pines) are no more than 10 t/ha. With the energy density of the dry wood averaging 18 GJ/t. (ha = 104 m²). Now, think about a large eighteenth-century city, which is located near a very large forest, would have required at least 20-30 W/m² of its built-up area for heating, cooking, and artisanal manufacturers. This city was totally dependent on the phytomass fuels. With the annual harvest of 20 t/ha: What is the approximate power density of the harvested phytomass fuel? (t = ton; ha = hectare) 600 (W)/(m²) 1.2 (W)/(m²) 1200 (W)/(m²) 1800 (W)/(m²) 0.6 (W)/(m²)

Photosynthesis converts less than 0.5% of incoming solar radiation into new phytomass. The best annual fuelwood productivity of traditional fast-growing species (poplars, eucalyptus, pines) are no more than 10 t/ha. With the energy density of the dry wood averaging 18 GJ/t. (ha = 104 m²). Now, think about a large eighteenth-century city, which is located near a very large forest, would have required at least 20-30 W/m² of its built-up area for heating, cooking, and artisanal manufacturers. This city was totally dependent on the phytomass fuels. With the annual harvest of 20 t/ha: What is the approximate power density of the harvested phytomass fuel? (t = ton; ha = hectare) 600 (W)/(m²) 1.2 (W)/(m²) 1200 (W)/(m²) 1800 (W)/(m²) 0.6 (W)/(m²)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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