[Emergy evaluation of power plant eco-industrial park].
In this paper, new emergy indices for the material circulation utilization and energy cascade utilization were presented to evaluate the emergy of power plant eco-industrial park. The common contribution of the members in power plant eco-industrial park should be accounted for emergy yield ratio (PEYR) and emergy investment ratio (PEIR), namely, PEYR = sigma(i = 1)6 (Fi + Ri + Ni)/sigma(i = 1)6 Fi and PEIR = sigma(i = 1)6 Fi/sigma(i = 1)6 (Ni + Ri). Saved renewable and nonrenewable resources and purchased resources and decreased environmental load should be accounted for environmental loading ratio (PELR) and index of sustainability (PESI), namely, PELR = sigma(i = 1)6 Fi/F' and PESI = PEYR/PELR. Case analysis on the Shuozhou power plant eco-industrial park showed that new emergy indices were practical in evaluating the power plant eco-industrial park.
Wang
Lingmei
L
Shanxi University, Taiyuan 030006, China. LMWang80008@yahoo.com.cn
Zhang
Jintun
J
D003246:Conservation of Energy Resources / Q000191:economics / Q000706:statistics & numerical data*; D017753:Ecosystem; D011211:Electric Power Supplies; D004736:Energy-Generating Resources; D005069:Evaluation Studies as Topic; D007221:Industry / Q000191:economics*; D008962:Models, Theoretical; D011210:Power Plants / Q000191:economics