地暖：低温热水地面供暖是以温度不高于60℃的热水为热媒，在加热管内流动，加热地板，通过地面以(主要)和对流(次要)的传热方式向室内供热的供暖方式。
Floor heating: low temperature hot water, surface radiant heating, with hot water at a temperature of not more than 60 degrees, is used as a heat medium to circulate in the heating pipe, heating the floor, and heating the indoor surface by means of radiation (main) and convection (secondary) heat transfer mode.
地暖使用范围：
      住宅：独立住宅、公寓大厦、办公楼等。
      公共建筑：学校、图书馆银行、会馆、餐厅等。
      体育娱乐设施：足球场、体育馆、网球馆、游泳馆。
      产业设施：工厂车间、厂房、浴池、设施保暖等。
      其他：温室、植物园、交通设施、机场等。
The scope of use of ground heating:
House: independent house, apartment building, office building, etc.
Public buildings: schools, libraries, hospitals, banks, guilds, restaurants and so on.
Sports and entertainment facilities: football field, gymnasium, tennis hall, swimming pool.
Industrial facilities: factory workshop, factory building, bathing pool, heat preservation and so on.
Other: greenhouses, botanical gardens, transportation facilities, airports and so on.
地暖的组成部分：
      热源设备：加热水的设备燃气壁挂炉
      分集水器：分配及收集水的设备
      动力设备：让水
      控制部分：控制水温及水的流量，包括温控开关、温控探头、电热执行器、水流开关……
      主管道：将热源设备产生的热水分集水器并收集分集水器的冷水进入热源设备中重新加热，属于从热源设备到集水器之间的管道部分
      地暖管：加热采暖区域的地面，使环境温度升高，预埋到各个采暖区域地面下的地暖管道。
      目前中国暖通行业，地暖，水管等，大部分采用PVC,PE,PPR等材料，其缺点是：
      一、传热慢；
      二、易老化，强度差；
      三、水温过60度时，已过塑料管子的正常使用范围，此时的塑料管子会受到破坏，且生产塑化剂，长期使用对人产生影响。上世纪60,70年代发达国家如：美国、日本、欧洲不允许使用塑料管子，取而代之的是不锈钢管。
The components of the ground heating:
Heat source equipment: equipment for heating water and gas wall hanging furnace
Separate water apparatus: equipment for distribution and collection of water
Power equipment: intelligent water pump, water circulation
Control part: control the flow of water temperature and water, including various temperature control switch, temperature control probe, electrothermal actuator, flow switch...
Main pipe: the hot water produced by the heat source device is introduced into the distributor, and the cold water collected from the distributor is reheated into the heat source device, which belongs to the pipeline part from the heat source device to the collector.
The ground heating pipe: heating the floor of the heating area to raise the temperature of the environment and prebury the ground heating pipe under the ground of each heating area.
At present, China HVAC industry, ground heating, water pipe and so on, most of the use of PVC, PE, PPR and other materials, its shortcomings:
First, the heat transfer is slow.
Two. It is easy to aging and poor in strength.
Three, when the water temperature is over 60 degrees, it has exceeded the normal scope of use of plastic pipes. At this time, plastic pipes will be damaged, and plasticizer will be produced, which will have a bad effect on people for a long time. In the 60,70 years of the last century, the developed countries, such as the United States, Japan and Europe, did not allow the use of plastic pipes and replaced them with stainless steel pipes.
不锈钢管波纹复合管的特点：
      一、传热快；
      二、抗压力，延伸力好；
      三、使用的解决管道热胀冷缩带来的不好现象；
      四、清洁卫生。
The characteristics of stainless steel tube corrugated composite pipe:
First, the heat transfer is fast.
Two, anti pressure, good extension;
Three. It has long service life and a good solution to the bad phenomenon of heat expansion and contraction of the pipe.
Four, environmental pollution free, clean and sanitary.
地暖成套装置的加热介质为：天然气、液化天然气、液化煤气。
The heating medium of the complete set of ground heating equipment is natural gas, liquefied natural gas and liquefied gas.