This paper proceeds from distributed energy system,the advantage,use occasion and main way of small scale combined heat and power technology has been introduced.

Environmental protection questions existed in the development of combined heat and power and its countermeasures;

It analyzes the unreasonable way of using steam in iron and steel enterprises at present,namely the quality loss situation of temperature and pressure reduction,and proposes the improvable measures of combined heat and power.

The combined heat and power is a kind of effective energy conservation measure.

Survey of security pre-appraisement for a new project of cogeneration;

Steam supply reliability analysis of Dayabay petrochemical zone gas turbine cogeneration project;

Performance test of a Stirling cogeneration system;

Design and application of exhaust gas for co-generation in Yangzhou Petrochemical Plant;

Optimization design for small and medium size co-generation turbine;

Research and discussion on development of small-scale distributed co-generation;