econd shaft extension for shaft extension at both B4VV-28-C Bevel-helical gear unit B4

Flender/Flender Gear Units/Bevel-helical gear unit B4

ter vapor in the atmosphere and is function of itsdensity ( ), mass of water per unit volume (gm /H, and temperature (), according to the ideal gas law: (kPa)/H1.6/H1/H1D( /H() ( By using Eq. (, the vapor pressure values in Eq. ( can be converted to vapor pressure density and ux of water vapor expressed as /H1s/H1. The water vapor pressure of plant tissue depends on the temperature and the amount of solutes within the tissue. Since we are concerned with water movement out of fruits 4 DeEll et al. and vegetables, the difference in water vapor pressure between the interior of the produce and its surrounding atmosphere provides an estimate of product moisture loss. Plants and their organs have compromising structure in terms of diffusion. Al- though water moves relatively freely within the intercellular channels in many products(little resistance), similar unrestricted exchange between the plant and its environment would result in rapid death due to water loss. Different sites along the pathway of diffusion provide varying levels of resistance to the movement of water molecules. Resistance towater and gas exchange is derived mainly from the cuticular layer (, which is theinterface between the plant and the atmosphere. Resistance from the fruit or vegetablesurface thus includes that of the stomata, lenticels, cuticle, and epicuticular wax, trichomes,and hairs, and the periderm. Since the xylem vessels of harvested fruits and vegetables are probably occluded and their operation greatly impeded (, water within harvested commodity has to move through different routes via the continuum of the cell walls (. The transpiration coefcient (also referred to as conductance or permeance), which is an indication of the ease with which fruit or vegetable surface gives off moisture, is expressed as the mass of moisture transpired per unit mass of commodity, per unitenvironmental water vapor pressure decit per unit time (5,. In some cases, the tran- spiration co