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On the basis of the typical common energy-saving technologies in the energy intensive enterprises researched and assessed, the comprehensive benefits of six typical high energy-saving technologies were selected and researched. In this paper, with Analytic Hierarchy Process (AHP), by setting energy efficiency indexes, economic indexes, life cycle indexes, comprehensive benefit evaluation system was formed, thus the comprehensive benefit evaluation model was established. The comprehensive benefit evaluation of six energy-saving technologies in the typical energy intensive enterprises was evaluated by evaluation index and model. The results showed that: the evaluation and assessment model constructed in this paper can scientifically evaluate the overall efficiency of energy-saving technologies in energy intensive enterprises, providing a reference for the preferred energy-saving technologies. At present, with energy-saving boom, energy-saving technologies promoted after another, but the lack of a complete & comprehensive evaluation system and assessment model to evaluate the practical energy saving effect and potential impact of energy-saving technologies (1-2) , leading there are some obstacles to select energy-saving technologies for the energy services company, and affected the actual project effect in the implementation of energy-saving process. To solve the above problems, high-energy common energy-saving technologies were Preliminarily select for energy conservation needs of users, considered the energy efficiency, economic and environmental benefits of energy-saving technologies, studied the comprehensive evaluation system, and built the comprehensive evaluation model with mathematical modeling theory and comprehensive evaluation theory of energy-saving technology (3-4) , The quantitative assessment methods and models were Provided for the integrated assessment of energy-saving technologies, so as to promote the rational use of energy-efficient technologies. Based on the thorough combing the state's key energy-saving technologies promotion directory, the Ministry of Science and Technology Support Program 11 energy saving advanced technology industry directory, as well as domestic and international professional bodies and other sources of energy-saving technology, the high-energy saving technologies for typical users was selected: frequency control system to optimize energy-saving technology, rare earth permanent magnet disc coreless motor technology, low temperature and low voltage aluminum cell structure optimization (5) , the new energy-saving technologies aluminum reduction cell cathode structure, Controlled auto-regulating distribution transformer capacity, dynamic harmonic suppression and reactive power compensation comprehensive energy-saving technologies.

Comprehensive Benefit Evaluation of Energy-saving Technologies for Typical Energy Intensive Enterprise