Gidrostrelka need for a hydrodynamic balancing of the heating system
Content
- 1 Why gidrostrelka in the heating system?
- 2 gidrostrelki heating apparatus
- 3 Additional features gidrostrelok
- 4 The principle of operation gidrostrelki in a private home heating system
- 5 Methods for calculating the gidrostrelki in a private home heating system
- 6 Combination heating manifold gidrostrelkoy
Why gidrostrelka in the heating system?
Explain why gidrostrelka need for heating is very simple. Processes unbalance heat familiar to owners of private houses. Modern boiler has a smaller loop volume than the circulation flow rate of the consumer. gidrostrelki heating work separates the hydraulic circuit from the secondary circuit of the heat source, improve the reliability and quality of the system.
The answer to the question: "Why do we need gidrostrelka in the heating system", is a list of the advantages of heating with hydraulic termorazdelitelem:
- separator - a prerequisite hardware manufacturer to ensure maintenance on the boiler capacity of 50 kW or more, or a heat source with a cast iron heat exchanger;
- unit provides maximum flow with laminar flow of coolant, hydraulic supports and temperature balance of the heating system;
- gidrostrelki parallel connection of the heating circuit and consumers creates minimal pressure loss, performance, and thermal energy;
- knee-supply arrangement ensures the return pipes of the secondary circuit temperature gradient;
The multi-loop heating systems use gidrostrelki necessary for balanced operation
The principle of operation of heating gidrostrelki to stabilize the hydrodynamic processes in the system. Timely removal of solids from the coolant will increase the life of pumps, valves, meters, sensors, heaters. Separating the flows (heat source circuit and the independent circuit consumer) gidrostrelka ensures maximum utilization of the combustion heat.
gidrostrelki heating apparatus
Gidrorazdelitel - vertical hollow vessel of large diameter pipes (square profile) with elliptic caps at the ends. Dimensions of the separator due to power (kW) of the boiler depend on the number and size of loops.
Heavy metal housing mounted on support legs, not to create a line voltage on the pipeline. The compact device is attached to the wall, placed on the brackets.
stainless steel Gidrostrelka
Gidrostrelki pipe and the heating conduit is connected by means of flanges or threads.
Automatic venting valve is arranged in the upper point of the shell. The precipitate is removed through a valve or a special valve that is embedded below.
Material for the manufacture gidrostrelki - mild or stainless steel, copper, polypropylene. Housing treated anticorrosive composition coated insulation.
Important! Models of the polymer used in the system, which heats boiler capacity of between 13 and 35 kW. Hydraulic separator of polypropylene is not used for thermal generators that operate on solid fuel.Making gidrostrelki own hands from propylene requires experience and skills to work with a professional plumbing and electric hand tools.
Hydraulic arrow «Meibes»
Additional features gidrostrelok
Advanced models combine the functions of a separator, a temperature controller and a separator. Thermostat valve provides a temperature gradient of the secondary circuits. Isolation of dissolved oxygen from the coolant reduces the risk of erosion of the inner surfaces of equipment. Removal of suspended particles flow prolongs the life of the impeller and bearing circulators.
The photo shows a model gidrostrelki for heating in the context of:
gidrostrelki apparatus - sectional view
Horizontal, perforated partitions divide the internal volume in half. supply-return line flows in contact zone "zero" and the slide in different directions without creating additional resistance.
From above, in the high temperature zone, vertical porous plate disposed deaeration. Collection of sludge and magnetic separator (magnesium anode) arranged in the lower housing.
Constructive gidrostrelki options: a manometer, a temperature sensor, the thermostat valve and the line for powering the system at startup. Sophisticated equipment needed adjustment, regular inspections and maintenance.
The operating principle of the collector with gidrostrelkoy 3 heating circuit
The principle of operation gidrostrelki in a private home heating system
coolant flow splitter extends at a speed of 0.1-0.2 m / s. Boiler pump propels the hot water to 0.7-0.9 m / s. The recommended speed limit gives an idea of what is needed for heating gidrostrelka.
Changing the amount and direction of movement dampens water flow rate with minimum loss of thermal energy in the system. Laminar flow motion leads to the fact that the flow resistance inside the housing is practically absent. The buffer zone separates the boiler, and the consumer circuit. Each of the pump heating circuit operates autonomously, without disrupting the hydraulic balance.
The volumetric flow of the primary circuit is greater than the flow rate of coolant dependent chain - the boiler operates under optimal conditions
Precondition: productivity, which has a primary circulation pump (boiler) contour 10% more than the total maximum pressure pump in the secondary circuit.
Methods for calculating the gidrostrelki in a private home heating system
How to calculate gidrostrelku private home heating system by yourself? It is possible to calculate the required size of the formulas, or pick up a diameter «3D» rule.
- The formula determines the diameter (D) of the maximum capacity of the hydraulic separator (calculations according to certificate data for boiler):
- The formula determines the diameter of the heat generator gidrostrelki power. Temperature difference ΔT supply / return temperature - 10 ° C:
- The diameter of the nozzle included in gidrostrelku or manifold:
| designation | Decoding the symbol | unit of measurement |
| D | The diameter of the housing gidrostrelki | mm |
| d | The diameter of the pipe | mm |
| P | Maximum power, which has a boiler (boiler passport data) | kW |
| G | Maximum flow (bandwidth consumption) per hour through gidrorazdelitel | m3/час |
| π | Constant value (3.14) | |
| ω | The maximum vertical velocity coolant through the separator (0.2) | m / s |
| ΔT | Difference supply temperature - the return (passport data boiler) | ° C |
| C | The heat capacity of water (relative unit) | W / (kg ° C) |
| V | The rate of the coolant through the secondary circuit | m / s |
| Q | Maximum flow rate in the consumer circuit | m3/ h |
Important! Formulas which produce gidrostrelki calculation for heating, obtained empirically. The diameter of the inlet pipe in gidrorazdelitel corresponds to the diameter of the boiler output.
- Determination gidrostrelki practical method parameters:
The approximate size of small diameter spacers selected input (exhaust) ports. The distance between the insets at least 10 nozzle diameters. The height of the housing is significantly greater than the diameter.
Elbow gidrostrelki circuit for heating installations used in the selection of large size. According to "rule 3d» body diameter is three nozzle diameters. The distance 3d determines design proportions.
Determination gidrostrelki parameters "rule 3d»
- Distribution of frames along the column height of the separator:
If the system does not provide a distribution manifold, the number of frames in a separator increases. A conduit connecting the first (boiler) circuit with gidrostrelkoy, distributed over the height. The method allows to adjust the temperature gradient in the dynamics. conditions necessary for the fulfillment of quality selection of coolant secondary circuit.
Scheme tie circuit heating system in the boiler piping
Combination heating manifold gidrostrelkoy
Small houses heats the boiler, in which the pump is integrated. Secondary circuit is connected to the boiler via gidrostrelku. Independent circuits residential buildings with a large area (150 m2) Is connected through a comb, gidrorazdelitel be cumbersome.
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Manifold mount after gidrostrelki. The apparatus consists of two independent parts which are combined webs. According to the number of secondary circuits crashed pairwise disposed tubes.
Manifold facilitates the maintenance and repair of equipment. Shut-off and regulating valves home heating system is in one place. collector enlarged diameter ensures uniform flow between the individual circuits.
Application gidrostrelki will protect the boiler from the thermal shock
Separator coplanar and form a hydraulic manifold valve module. Compact unit suitable for cramped conditions for small boilers.
Installation issues are provided for binding with an asterisk:
- low-pressure circuit is connected underfloor bottom;
- High-pressure radiators circuit - top view;
- exchanger - the side opposite the gidrostrelki.
The figure shows gidrostrelka the collector. manufacturing scheme involves the installation of the balancing valve between the manifolds feed / return flow:
Scheme gidrostrelki the collector
Control valves for maximum flow and pressure at the far from gidrostrelki circuits. Balancing reduces processes improper throttling the flow, allows for the design flow of coolant.
Important!Independent heating system relates to systems operating with high temperature pressurized medium (gidrostrelka heating private houses including).
Make gidrostrelku heating own hands can specialist with sufficient amount of knowledge in heat technology, experience and skills (elektrogazosvarka, plumbing, operation manual power tools). Numerous internet sites offer step by step for the production of heating gidrostrelki instructions, video clips can also help in this process.
The dimensions of the heating manifold gidrostrelkoy
Theoretical knowledge will help create blueprints gidrostrelki heating, make the personal order equipment in specialized organizations to monitor the work of the contractor. Trust the responsible manufacturing of heating units nonprofessionals dangerous to life and health. It should be remembered that spoiled the fault of the owner of the equipment warranty and non-refundable.
