Ground cherry seeds need to be planted at a depth of 1-cm below the surface and will only germinate if their surrounding soil is at a temperature of 24-30°C. Farmer Joe wants to know whether adding straw mulch (mulch = 0.05 W/m K, Lmulch = 10 cm) on top of his soil will increase the odds of germination. The topsoil in Deleware is sandy loam (2soil = 0.5 W/m-K), with a thickness of 1 m. Immediately beneath the topsoil is the subsoil, which is at a constant temperature of Tsubsoil = 10°C. You can assume that the air in Deleware is fairly calm, with a heat transfer coefficient of h = 10 W/m².K. deleware (a) Sketch the system (with and without mulch), labeling all temperatures, dimensions, and proportionality constants. You may assume that the subsoil, topsoil, mulch, and air are at steady state. You should have two sketches.
Ground cherry seeds need to be planted at a depth of 1-cm below the surface and will only germinate if their surrounding soil is at a temperature of 24-30°C. Farmer Joe wants to know whether adding straw mulch (mulch = 0.05 W/m K, Lmulch = 10 cm) on top of his soil will increase the odds of germination. The topsoil in Deleware is sandy loam (2soil = 0.5 W/m-K), with a thickness of 1 m. Immediately beneath the topsoil is the subsoil, which is at a constant temperature of Tsubsoil = 10°C. You can assume that the air in Deleware is fairly calm, with a heat transfer coefficient of h = 10 W/m².K. deleware (a) Sketch the system (with and without mulch), labeling all temperatures, dimensions, and proportionality constants. You may assume that the subsoil, topsoil, mulch, and air are at steady state. You should have two sketches.
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter7: Forced Convection Inside Tubes And Ducts
Section: Chapter Questions
Problem 7.53P
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