【摘要】 通过计算和分析，提出垂直失调不是单管顺流式供暖系统固有的特点，同时根据实际使用效果，分析了采用顺流式和跨越式相结合的供暖系统不能明显改善垂直失调的原因。更多还原

【Abstract】 This paper, through calculating and analysing, has provided that out of balance in verticality is not inherent feature in single-pipe flow with current heating system．In same time, according to practice use effect, analysed the reason that togather with flow with current and flow with crossover heating system could not improve out of balance in verticalityobviously．更多还原