How to insulate the water supply in the country?
The best method of warming a water pipe is to deepen into the ground below the freezing line of the soil in the coldest winter period. When using the pipeline throughout the year, so do. Since at certain depths the soil temperature remains unchanged throughout the cold season( for different regions this level is different).The downside of this method is that in some places the ground can freeze to two meters deep. In this case it will be very difficult( inappropriate) to dig in the pipes to such a depth. Considering this aspect, we will consider several other methods, such as how to insulate water pipes.
Creating excessive pressure in the pipes
The reason that the pipe bursts is the ice that breaks it. If we ensure that the water does not freeze, we will avoid damage to the water pipe. From the school course of physics, we know that water, which is under pressure, does not change its aggregate state, that is, it does not freeze. It is necessary to connect the receiver to the water pipe, and on the day of departure we turn on the device and gradually create pressure in the pipeline. A value that approaches three atmospheres will not allow ice to form. On return in the spring, it is only necessary to release( pressurize) excessive pressure, thereby bringing the system to a normal state.
The important point is that the pipes have a safety margin and can withstand such a load. It is also necessary to make sure that the entire water supply system is under excessive pressure.
Heating the water pipe using the
cable If there is no possibility to bury the water pipes deep enough, there is a method of heating the pipe with a cable. Pipes need to be wrapped with a cable that is connected to the power supply. The cable heats up, thereby heating the pipeline, preventing the water from freezing. It is necessary to take into account the cost of cable purchase and electricity costs. It should be borne in mind that the threat of freezing is only relevant for a few months, and the costs in this case are not as great as it might seem at first glance.
When the pipeline is insulated, the materials are exposed to frost, precipitation and other unfavorable factors, so that the insulation must meet the following requirements:
- fire-fighting properties when used indoors;
- longevity;
- low thermal conductivity;
- high coefficient of heat savings;
- resistance to weathering;
- low cost;
- user-friendliness and the ability to re-install.
Kinds of water heaters
The most common are heat-insulating basalt cylinders( consists of high-density microcrystalline basalt fiber, there is an increased wear resistance of insulation in the form of aluminum foil) and expanded polystyrene( foam) shells.
Requirements for fire water supply
Fire water supply is obligatory foreseen in such objects:
- of administrative buildings with a height of 6 and more floors;
- residential buildings of 12 and more floors;
- public buildings, regardless of number of storeys and sizes;
- buildings whose cubic capacity is 5000 or more cubic meters;
- entertainment centers;
Fire water pipes are divided into: high pressure
- ;
- of low pressure;
Low pressure fire water pipelines use motor pumps or fire trucks to create the necessary pressure, the pressure should provide a jet 10 meters from the fire barrel.
High-pressure fire pipes use stationary pumps that generate high pressures and are activated only when a fire is detected, but no later than five minutes from the arrival of the signal.
The fire water pipe must be constantly maintained in good condition and checked at least once every six months.
