对家用燃气热水器的热平衡及热效率进行分析。
The thermal balance and thermal efficiency of domestic gas water heater are analyzed.
介绍冷凝式家用燃气热水器的实验研究结果，并结合实例对换热面积进行了优化分析。
The experimental research results of condensation type domestic water heater are stated and the optimization of heat exchange surface area is analyzed through examples.
价格，不同品牌、不同型号的燃气热水器价格差距非常之大，常用家用燃气热水器价格800-3000元不等。
Five, the price, different brands, different types of gas water heater price gap is very large, commonly used household gas water heater prices ranging from 800-3000 yuan.
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