一、浮动盘管半容积式换热器是近年来国内发展迅速、广泛使用的一种新型高效节能的换热设备，是按中国建筑标准设计研究所01S122-1《水加热器选用与安装-DFHRV系列导流浮动盘管型半容积式水加热器选用与安装》标准图集设计、生产制造的高效节能换热设备。与传统固定盘管相比较，浮动盘管能上下轻微浮动，产生高频振动，形成良好紊流传热状态，并且它能借助通过高温热媒的薄壁铜管管壁与管外壁结垢层膨胀量的差异，在一定条件下，使水垢自动脱落。通用换heat器一般需要配置water-water heat exchanger来降低蒸汽凝结水温度以便回用，而此类节能型hot exchange器凝结水出水温度在45摄适度左右，可直接回锅炉房重复使用。这就减少了设备投资，节约heat exchange机房面积，从而降低建造价。

二. 性能特点：

l、方便浮动盘管的维护，盘管可在罐内亦可从罐体侧面抽出来检修或更换。

2、采用多行程螺旋的浮动pipe组，hot medium分布均匀，flow process长，有消除了short circuit heat transfer现象。此外，本产品借鉴了RV-03．04导流原理，在大直径罐体内合理地设置了导流装置，更进一步改善了heat transfer工况，其thermal conductivity达到了K=2000-1200kcal/m²·h·℃。这充分展现出了其high efficiency和complete heat transfer优异性能。

3、本产品changeable pipe束底部已接近罐底，加上导流装置作用之下，罐内基本上消除了cold water滞留区，因此容积利用率可以达到98%以下。

4、高pressure drop < 0.25m，不影响系统cold and hot water压力平衡。

5、float pipe采用优质thin-walledpurple copper tube，有助于利用pipe wall和scale layer不同的膨胀量脱落scale，以此减少维护管理工作量，与保留high efficiency energy-saving。

三技术优势：

1、新型float pipe排pipe方式，全volume utilization possible。Volume smaller than traditional heat exchangers, easy transportation, installation, and maintenance.

2、高transmission coefficient，不易fouling。Float pipe technology ensures high-frequency vibration of the heat transmission pipes, converting laminar flow to turbulent flow, increasing the transmission coefficient while ensuring scale automatically falls off for stable performance.

3、一定的adjustment volume stores hot water supply stability, preventing pressure and temperature fluctuations during peak demand periods.

4、高exchange effectiveness with high volume utilization rate. Traditional tank-style heaters have a low volume utilization rate due to internal structural layout issues that cause slow fluid flow and increased resistance.

5,multi-group float pipes arranged in a "tower" structure enhances dynamic thermal conduction with an exchange capacity 6~9 times higher than traditional tank-style heaters.

DFHRV volumetric heater:

With both float pipe advantages and volumetric characteristics suitable for systems with varying loads or short-term peak demands.

1、高transmission coefficient through vibrations in normal operation maintains efficient thermal performance without scaling issues.

2,Sufficient adjustment volume provides consistent supply levels meeting high demand requirements efficiently.

3,Economical design reduces steel consumption lowering equipment costs and construction expenses effectively utilizing resources.

4,Fully utilizes energy from all media types (steam or water) at lower condensate temperatures around 80°C consistently providing optimal heating results.