1The use of sensors in the monitoring of wastewaterTANG Li-na, LIU Li-fen, YANG Feng-lin16-212The applaication of energy-efficiency distribution matrix in the defective condition of feed parameter in heat-engine plantZHANG Shu-fang, DONG Qi, WANG Li-jie21-243A study on economical running of heat exchanger based on intelligent control technologyZOU Ji-bin25-27,314Hydraulic calculation and analysis of steam heating network28-315Thermal dynamic analysis of the second type heat pump in spaceheating with wasteheat32-356Research of ground-sourse heat pump system based on fuzzy controlBIAN Wei-feng, GONG Yan-feng36-387Energy-conservation applying in the designing power plantGUO Feng, LIU Yang39-40,448Thermal efficiency analysis of small units of co-generation of heat and powerWANG Dong, YANG Dong-Mei, LI Yan-Yi41-449Causation analysis and preventive measures of frequent slagging problem of boiler 4 at Zhanjiang Power PlantHuang Wen-feng45-4710The development of mine enery-saving fan control systemXIAO Ai-wu, WU Liang-hui52-5411Application analysis of a double-lift absorption refrigeration system driven by solar energy55-57