Electric convectors for heating cottages: basic selection rules

Today, the pres­ence of a small coun­try house or cot­tage is no sur­prise to any­one. Often, the dacha is used by its own­ers only in the warm sea­son. If vis­its are planned in the win­ter, then the devel­op­er is faced with the prob­lem of heat­ing their own prop­er­ty. What heat­ing scheme for a sum­mer house can be applied?

Pulling a gas pipe is expen­sive and not always advis­able. There is often no desire to make a stove or use sol­id fuel equip­ment due to dif­fi­cul­ties with kin­dling and low automa­tion of appli­ances. It remains to heat the cot­tage with elec­tric­i­ty. Cre­at­ing water heat­ing with an elec­tric boil­er is also a trou­ble­some task, and fan heaters are not always effec­tive. One of the sim­plest (and there­fore pop­u­lar) ways to heat coun­try hous­es is con­vec­tor, which will be dis­cussed in this arti­cle.

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Purpose and design

Convector deviceAn elec­tric con­vec­tor is a heat­ing device designed to heat air in small rooms. The design of this device is inge­nious­ly sim­ple and sim­ply inge­nious. The con­vec­tor con­sists of:

  • A met­al case (usu­al­ly alu­minum) in which two grilles are pro­vid­ed. One at the top of the device and one at the bot­tom.
  • Dry heat­ing ele­ment. For greater effi­cien­cy, it is made with ribs.
  • Automa­tion unit, which includes a ther­mo­stat and a room tem­per­a­ture sen­sor.

The heat­ing ele­ment heats the air inside the case. Accord­ing to the laws of physics, it ris­es up and enters the room through the grate in the upper part of the case. Its place is occu­pied by cooled air mass­es that enter the device through the low­er grille.

The movement of air masses during the operation of the convectorThis move­ment of air mass­es is called con­vec­tion (hence the name of the device). Thanks to con­vec­tion, the cir­cu­la­tion of air mass­es in the room is cre­at­ed, and there­fore its uni­form heat­ing.

Impor­tant! The sim­plest design of the con­vec­tor is described above. Some mod­els are equipped with a built-in fan to increase the speed of heat­ing the room.

Advantages and disadvantages

Despite the high cost of elec­tric­i­ty, it makes sense to cre­ate elec­tric heat­ing for a coun­try house through the use of con­vec­tors.

  • The device is ready for use imme­di­ate­ly after con­nect­ing to the house­hold pow­er sup­ply.
  • Does not require com­plex instal­la­tion work.
  • For the arrange­ment of heat­ing a coun­try house or a sum­mer res­i­dence with con­vec­tors, no per­mits and approvals are required.
  • The device does not have high iner­tia (quick­ly heats the air in the room).

In addi­tion, elec­tric con­vec­tors are easy to use and do not require main­te­nance. But the main advan­tage (in the opin­ion of most of our com­pa­tri­ots) is the rel­a­tive­ly low cost of these devices.

Why is the con­vec­tor method of elec­tric heat­ing for sum­mer cot­tages so pop­u­lar? The fact is that all oth­er heat­ing devices (includ­ing boil­ers, stoves, IR emit­ters and fan heaters) require human par­tic­i­pa­tion. Elec­tric con­vec­tors can work con­stant­ly and with­out super­vi­sion. Thanks to the ther­mo­stat, you can set the device to main­tain the min­i­mum allow­able tem­per­a­ture in the coun­try house, pre­vent­ing its pre­ma­ture destruc­tion and high ener­gy costs.

Varieties of electric convectors

On the mod­ern mar­ket of cli­mate tech­nol­o­gy, these heaters are of three types:

  • Wall.
  • Floor.
  • Uni­ver­sal.

Wall mod­els are rec­om­mend­ed to be installed under the win­dow open­ing. More­over, it is nec­es­sary to free up space in such a way that noth­ing inter­feres with con­vec­tion. Floor devices, most often, are equipped with wheels, which makes them mobile with­out ref­er­ence to the place of use. The third type of devices can be used both in floor and wall mount­ing options.

https://youtu.be/IajZHGjOjVw

Struc­tural­ly, all devices are the same, but depend­ing on the mod­el, there are some dif­fer­ences in the automa­tion unit. Most mod­ern con­vec­tors are equipped with a remote con­trol, which makes the use of this device more con­ve­nient. Some mod­els are equipped with a timer and can only work for a set time, some allow you to con­nect an exter­nal room ther­mo­stat and are equipped with a tem­per­a­ture con­trol func­tion. All this allows you to use elec­tric­i­ty more eco­nom­i­cal­ly. It is these wall-mount­ed eco­nom­i­cal elec­tric heat­ing con­vec­tors for sum­mer cot­tages that are most in demand among our com­pa­tri­ots.

What to look for when choosing a device

Today, spe­cial­ized stores offer the widest selec­tion of elec­tric con­vec­tors from more than two dozen for­eign and domes­tic man­u­fac­tur­ers. And this is not yet tak­en into account devices from the Mid­dle King­dom, whose brands quick­ly occu­py lead­ing posi­tions in the glob­al mar­ket for cli­mate tech­nol­o­gy. Apart from the brand name, what should I pay atten­tion to when buy­ing this instru­ment?

  1. Sup­ply volt­age. For heat­ing a coun­try house, it is best to choose devices pow­ered by a 230 v / 50 Hz house­hold elec­tri­cal out­let.
  2. Pow­er. The pass­port for any con­vec­tor indi­cates how much elec­tric­i­ty it con­sumes per hour. The more — the high­er the cost of pay­ing bills. How­ev­er, a pow­er­ful device will quick­ly warm up the room to the desired tem­per­a­ture.

    Advice! Experts rec­om­mend choos­ing the pow­er of the con­vec­tor accord­ing to the heat loss of the room.

  3. Func­tion­al. The more func­tions, the more oppor­tu­ni­ties this device pro­vides to the own­er.

    Advice! Today, in order to raise the cost, many man­u­fac­tur­ers equip con­vec­tors with com­plete­ly unnec­es­sary func­tions, for exam­ple, self-diag­no­sis or light indi­ca­tion at dif­fer­ent tem­per­a­tures. This func­tion­al­i­ty does not make the oper­a­tion more con­ve­nient and safe, but sig­nif­i­cant­ly increas­es its cost.

  4. Dimen­sions. Every­thing is sim­ple here: the larg­er the area of ​​​​the heat­ed sur­face (yes, it is heat­ed by the air that is inside the case), the more effi­cient the con­vec­tor is.
  5. Elec­tron­ic or mechan­i­cal con­trol. Devices with elec­tron­ic con­trol, dis­play and indi­ca­tion of modes are more con­ve­nient than mechan­i­cal ones, but have a high­er cost. You choose.

And the last thing you should pay atten­tion to when choos­ing this device is its effi­cien­cy. Most man­u­fac­tur­ers focus on the high effi­cien­cy of their mod­els. In fact, all elec­tric con­vec­tors, regard­less of mod­el and brand, have an effi­cien­cy of at least 93%.

Calculation of the number of electric convectors

Convector control panelHow to cal­cu­late how many elec­tric con­vec­tors for heat­ing a sum­mer house are need­ed to cre­ate and main­tain a com­fort­able tem­per­a­ture?

The num­ber and pow­er of the con­vec­tor can be deter­mined in sev­er­al ways:

  • Cal­cu­late the heat loss of each room. The pow­er of the device must cor­re­spond to the val­ue obtained.
  • Make cal­cu­la­tions tak­ing into account the vol­ume of the heat­ed room and the degree of insu­la­tion of the build­ing.

Let’s say right away: the first method is the most accu­rate, but rather com­pli­cat­ed. It is nec­es­sary to cal­cu­late (using spe­cial for­mu­las) the heat loss of walls, ceil­ing, floor, glaz­ing, and then add up the data obtained. This is a cal­cu­la­tion method for one room. Repeat for each sub­se­quent cal­cu­la­tion.

In the sec­ond method, you need to cal­cu­late the cubic capac­i­ty of the heat­ed room (mul­ti­ply the area by the height of the ceil­ings), after which the result­ing val­ue is mul­ti­plied by the rec­om­mend­ed pow­er, which depends on the degree of ther­mal insu­la­tion of the build­ing.

20 W — build­ing, made in com­pli­ance with the nec­es­sary stan­dards of ther­mal insu­la­tion.

30 W — brick house with insu­lat­ed floor and attic.

40 W — SIP pan­el house

50 W — not insu­lat­ed build­ing.

Advice! For ease of cal­cu­la­tion, you can use a sim­pli­fied method, where for every 10 m2 area of ​​the heat­ed room requires 1 kW of heat gen­er­a­tor pow­er.

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