There is no life with­out air. Every­one knows this truth, but for some rea­son they for­get that the air in any house begins with the cre­ation of an effec­tive ven­ti­la­tion sys­tem in it. And they remem­ber this, alas, when they start to sweat, suf­fo­cate and sim­ply feel uncom­fort­able due to the lack of prop­er air exchange.

Ventilation must provide the correct composition of the air

Ven­ti­la­tion must pro­vide the cor­rect com­po­si­tion of the air

Each house has its own ven­ti­la­tion

Ven­ti­la­tion of the house should be tak­en care of even at the stage of its con­struc­tion or recon­struc­tion. In an age where the weath­er out­side is becom­ing more and more unpre­dictable every year, nat­ur­al ven­ti­la­tion is no longer a guar­an­tee that you will get enough fresh air.

And most impor­tant­ly — that the air that you will still receive through it will turn out to be “to your taste”. For exam­ple, that there will not be a lot of dust in it, that its tem­per­a­ture will become com­fort­able for you, that it will not end up too dry or, con­verse­ly, wet.

It is espe­cial­ly impor­tant to cre­ate an effec­tive ven­ti­la­tion sys­tem for rooms where a large num­ber of peo­ple gath­er at the same time, where most of the time there is high humid­i­ty or dry air, where unpleas­ant odors “hang” in the air.

At the same time, the air qual­i­ty in the house will pri­mar­i­ly depend on two process­es:

  • cre­ation of the “cor­rect” design of the ven­ti­la­tion sys­tem,

  • ven­ti­la­tion instal­la­tion.

And it is dif­fi­cult to say which of these process­es is more impor­tant. Design errors lead to the fact that it is often nec­es­sary to rebuild an already cre­at­ed ven­ti­la­tion sys­tem. Most often, these errors are detect­ed already in the first months of the sys­tem oper­a­tion.

Instal­la­tion errors are often less notice­able, but no less fatal in their con­se­quences — a poor-qual­i­ty ven­ti­la­tion sys­tem is not only more expen­sive in terms of oper­a­tion, but also increas­es the health risks of those who are forced to use it. And in some cas­es, it can even lead to death.

Types of ven­ti­la­tion sys­tems

There are three main types of ven­ti­la­tion:

  • sup­ply,

  • exhaust,

  • sup­ply and exhaust.

Sup­ply ven­ti­la­tion pro­vides fresh air to the room from the envi­ron­ment. Exhaust — removal of used air from the room. Sup­ply and exhaust ven­ti­la­tion per­forms both of these process­es simul­ta­ne­ous­ly.

Compact air handling unit with electric preheater 2VV Venus

Com­pact air han­dling unit with elec­tric pre­heater 2VV Venus

The choice of the type of ven­ti­la­tion sys­tem for a par­tic­u­lar object should be made only by spe­cial­ists, because only pro­fes­sion­als can cor­rect­ly cal­cu­late the para­me­ters of the future sys­tem and offer the best solu­tion.

A sim­ple exam­ple is that even the most com­mon ven­ti­la­tion sys­tem needs peri­od­ic main­te­nance. With­out such main­te­nance, ven­ti­la­tion equip­ment even­tu­al­ly becomes unre­pairable. But for main­te­nance, spe­cial open­ings and spaces must be pro­vid­ed so that a spe­cial­ist can gain access to the nodes of the sys­tem.

That is, the choice of the type and para­me­ters of the sys­tem should be made com­pre­hen­sive­ly, tak­ing into account the capa­bil­i­ties of the premis­es where the sys­tem is installed.

Anoth­er exam­ple, at the ven­ti­la­tion design stage, it is nec­es­sary to pro­vide that the pow­er of the air han­dling unit is suf­fi­cient to ensure suf­fi­cient air exchange inside the house. And at the same time, if you have cho­sen a sup­ply and exhaust sys­tem, the air han­dling unit must work in bal­ance with the exhaust sys­tem, and also so that the ven­ti­la­tion does not con­sume too much elec­tric­i­ty and does not make too much noise, because. it caus­es dis­com­fort.

As you can see, there are plen­ty of nuances here.

The com­po­si­tion of the ven­ti­la­tion sys­tem

It should be remem­bered that the ven­ti­la­tion sys­tem is a tech­ni­cal­ly com­plex struc­ture, con­sist­ing of many ele­ments, each of which has its own pur­pose. To imag­ine this com­plex­i­ty, let’s look at what a typ­i­cal sup­ply ven­ti­la­tion sys­tem con­sists of. Here is its approx­i­mate com­po­si­tion:

  • air intake grille at the air inlet from the street,

  • air valve, to stop the air sup­ply from the street,

  • air fil­ter sys­tem,

  • cold air heater,

  • fan,

  • fan sound­proof­ing,

  • a net­work of ducts direct­ing indoor air,

  • air dif­fusers at the out­let of the ducts,

  • ven­ti­la­tion con­trol sys­tem.

In addi­tion to the above basic ele­ments, today more and more often, in par­al­lel with the heater, a heat exchang­er is installed. It is a device with which par­tial heat­ing of cold air is car­ried out due to the heat of the used air mass­es removed from the premis­es. In this case, the incom­ing and out­go­ing air flows do not mix.

The heat exchang­er reduces the cost of heat­ing cold air and is an ener­gy effi­cient solu­tion.

Source: Top­Cli­mat

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