Amtrol Tank is designed to supply the bulk expansion working fluid. He may be under atmospheric and pressurized. The most common expansion tank is open (Amtrol Extrol 30, Amtrol Extrol 60) The working fluid is poured into the tank through the neck 5, fitted with a strainer. The volume of liquid in the tank is controlled by a level indicator 2. At the pump fluid flows through nozzles with filter 3 and the hose into the tank – through nozzle 1. To avoid bubbling (intensive mixing) fluids that can lead to foam the latter, on the nozzle to a set of crushing jet mesh device or a perforated cap. Air volume above the free liquid surface communicates with the environment through saputs 4, equipped with air fine filter to protect the inner tank volume of fine contained in the atmosphere.
In systems designed to operate in conditions of variable atmospheric pressure (for example, when climbing the aircraft to an altitude of 1000 m the atmospheric pressure drops to 180 mm. Hg. Art.) Use sealed containers with pressurization (about 0 2-0,3 MPa) gas (b). Expansion tank with pressurization by inert gas (Amtrol extrol model 30), the use of which does not cause oxidation of the oil. Tank pressurization gas is produced through the fitting 6. Hydraulic fluid returns from the tank through a nozzle with a perforated cap to crush the jet. Amtrol Expansion Tank fill with fluid through the filter fitted neck 7, tightly overlapping lid expansion tank.
When heating water, its volume is increasing. For example, if the total amount of radiant heating systems in 30,000 liters of water heated from +10 oC to + 99oS, will increase its volume by about 1 050 – 1 200 liters. To prevent rupture of the system, increase the volume should be placed in any capacity. Previously used for this purpose open water-pressure tanks that are installed in attics. In modern heating systems using sealed Extrol 30 expansion tanks. Compared with type water tanks, they have several advantages:
- Do not require constant pouring of water evaporating into the tank;
- Eliminates corrosion of the components of the radiant heating system;
- Eliminate the heat loss due to the lack of evaporation;
- Do not require installation of additional signal and overflow devices, no problem air exhaust;
- Can be installed in any convenient place.
Diaphragm Amtrol expansion tanks is used to create a closed heating systems of various sizes in holiday cottages, homes and other buildings with individual heating system, produced in volume from 1,200 to 5,000 liters.
The main parts – a metal shell and the Expansion tank of a synthetic rubber that separates the housing into two cavities. In a cavity under the pressure of TACO pump air into the other by heating the heating system enters the expanding water and air trapped in the first cavity is compressed.
Color tanks Amtrol – green or grey.
Operating temperature range with the Expansion tank of the butyl rubber from-10oC to +99 oC.
