The modern benefits of civilization allow you to equip a house as you wish, equipping the house with all the necessary items for a comfortable stay, including supply networks. Is it possible to imagine a modern house without a ventilation system and air conditioning? Today it seems unrealistic, but after all, before people were not aware of such benefits.
Arrangement of ventilation ducts is not just words. Such work has to be approached with no less responsibility than to design a house. The arrangement of the building as a whole, from laying the foundation to putting it into operation, is a responsible and important process.
The further functioning of the ventilation system depends on how correctly designed the ventilation system is. Every detail is important here. Indeed, even if a small mistake is made, the system may fail and, for example, drive hot into the room instead of cold air. The ventilation system consists of many elements that are interconnected by special parts and shaped products.
Features of designing ventilation in the house
The main factor affecting the performance of a ventilation system is the correct design. The calculation of the area of ducts and fittings is necessary for the smooth operation of the entire system. Computing is time-consuming and costly. Although today this process is easy to carry out using special formulas or entire computer programs.
Features of the calculation by the formula
The calculation of the area of ducts and fittings according to the formula is as follows:
Sc = L * 2.778 / V, where:
- Sc is the cross-sectional area;
- L is the flow rate of the circulated stream;
- V is the flow velocity at a specific location (m / s);
- 2,778 - fixed value (coefficient).
After calculating the area of ducts and fittings, you can get a number measured in cm 2 .
Regular ventilation area
To calculate the indicator use:
- S = p * D 2/400 - for round products;
- S = A * B / 100 - for rectangular products.
Here S is the area, D is the diameter of the duct / pipe, A, B are the dimensions of the ventilation ducts.
Pressure loss during air circulation
Designing a ventilation system has its own subtleties. Carrying out such work, it is important not to forget about the possible loss of pressure in the network during continuous air circulation. A special formula has been prepared for this, showing the degree of the pressure level necessary for the normal functioning of the network:
P = R * L + Ei * V2 * Y / 2, where:
- P is the pressure level in the system;
- R is the indicator of pressure changes in the network;
- L is the length of the duct;
- Ei is the summed loss coefficient;
- V is the air velocity inside the network;
- Y is the density of the air flow through the pipe.
Shaped products
To determine the necessary parameters of both shaped products and ventilation components, it is necessary to have the mathematical skill to be able to use formulas to determine the area of air ducts and other indicators required during the design of the ventilation system. To simplify the design process, engineers have been working for more than one year to improve special programs - calculators that can automatically calculate. A person only needs to enter the requested values manually to calculate the area of ducts and fittings, and the program will do the rest.
Only a specialist engineer can calculate the values for fittings fasteners independently. Although even professionals in their field rarely do without special tables with coefficients, symbols and permissible norms for the circulation of air flows. One cannot do without a formula for calculating the area of ducts and fittings.
An ordinary person without knowledge in certain areas of engineering cannot afford to perform the computational stages of complexity. Therefore, when designing not only ventilation, but also any other communication system, take on the independent execution of only work that is feasible for you, and entrust the rest to professionals if you need a house with well-functioning communication systems and an optimal microclimate in the room, regardless of the weather outside.