冷凝式熱水鍋爐

鍋爐改造為常壓熱水鍋爐時，應考慮春流速、安全通入大氣管直徑，回水管直徑的計算等方面作了介紹。

Based on fundamental principles of themodynamics,through a practical example,this paper analyzes mechanism of energy transformation and usage for condensing gas-fired hot water boiler from the view of exergy equilibrium and heat equilibrium,compares the exergy losses and heat losses. The author presents essential and technical guides for energy saving of condensing gas-fried hot water boiler.