Heating and ground heating for the return of water temperature

地暖是将温度不高于60℃的热水或发热电缆，暗埋在地热地板下的盘管系统内，再加热整个地面，通过地面均匀地向室内辐射散热的一种采暖方式。暖气的供回水温度一般是95/70℃，而地暖的供回水温度不高于60/50℃。如果整个小区是暖气采暖，只有单层用户想改装地暖，为确保加热盘管使用寿命，通常做法是在供回水进户处增设板式换热器或混水降温装置。这一装置的安装，能把采暖系统高温水置换成低温水，安装时切记不可直接将地暖管与采暖供回水管道相接。如直接相连，地暖管承载水温过热会致使管材损坏，影响地暖系统的寿命。

The ground heating is a heating mode that is buried in the coil system under the geothermal floor, reheating the whole ground and radiating heat evenly through the ground, which is not more than 60 degrees of hot water or heating cable. The temperature of heating and supplying water is generally 95/70 degrees, while the temperature of floor heating and supplying water is not higher than 60/50 C. If the whole area is heating heating, only one single user wants to refit the heating, in order to ensure the service life of the heating coil, the usual practice is to add the plate heat exchanger or the mixed water cooling device to the house for the return water. The installation of the device can replace the high temperature water of the heating system into low temperature water. When installing, it is not necessary to directly connect the ground heating pipe to the heating water supply and return pipe. If connected directly, the overheating of the ground heating pipe will cause damage to the pipe and affect the life of the floor heating system.

阻力平衡问题

Resistance balance problem

地暖的阻力比暖气大，约为暖气的十倍之多。在改装地暖时如果盲目在原暖气系统上增设加热盘管，可能导致暖气系统压力不足，热水难以循环，整个地暖系统难以正常运行散热。因此在改装时，建议增设混水恒温装置，通过循环泵强制循环。注意：如果增设混水装置时，由于难以估算原暖气系统阻力，选择的循环泵过大时，有可能会影响其他用户正常采暖。专家建议在循环泵增设一个旁通，如果阻力过大不能满足地暖系统时，可开启循环泵。

The resistance of floor heating is about ten times larger than that of heating. If the heating coil is added blindly in the original heating system, it may lead to the insufficient pressure of the heating system, the hot water is difficult to circulate, and the whole heating system is difficult to run normally. So in the modification, adding water thermostat recommendations through the circulation pump forced circulation. Attention: if the water mixing device is added, it is possible to affect the normal heating of other users because it is difficult to estimate the resistance of the original heating system, and when the selected circulating pump is too large. Experts recommend adding a bypass to the circulating pump. If the resistance is too large to meet the floor heating system, the circulating pump can be turned on.

地暖管盘不宜过长

The heat pipe plate should not be too long

地暖管盘越长，产生的阻力越大，运行时耗电越多。这就要求各个环路的长度不要相差太大，以免水力失调，造成有的环路热，有的环路不热。一般各个环路长度差不要超过10%，各管路以不超过120米为宜。

The longer the ground heating tube is, the greater the resistance is, and the more power it consumes. This requires that the length of each loop should not be too large, so as to avoid the maladjustment of the hydraulic system, resulting in the heat of some loops, and some of the loops are not hot. Generally, the length difference of each loop should not exceed 10%, and the pipeline should be no more than 120 meters.