Boilers of indirect heating. Gas water heaters

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Boilers of indirect heating. Gas water heaters

A boil­er is a heater that allows you to pro­vide hot water to the whole fam­i­ly, and if it works using indi­rect heat­ing tech­nol­o­gy, then fam­i­ly mem­bers can even use hot water at the same time. A fea­ture of this device is that it does not have a heat­ing source, and the heat­ing itself is car­ried out using indi­rect heaters, char­ac­ter­ized by an exter­nal loca­tion. For exam­ple, a heat­ing boil­er or even a cen­tral heat­ing sys­tem can be used as a heat car­ri­er in such a boil­er.

An indi­rect heat­ing boil­er solves the prob­lem of lack of hot water while it is used by fam­i­ly mem­bers. With such a device, you can wash dish­es in the kitchen and take a show­er in the bath­room at the same time with­out any dis­com­fort, since the boil­er has its own hot water tank. An exam­ple of reli­able water heaters is Draz­ice indi­rect heat­ing boil­ers.

Var­i­ous types of water heaters are pre­sent­ed on the com­pa­ny’s web­site Dom-climata.ru.

Con­tent

  • Design fea­tures
  • Fea­tures of choice
  • Gas water heater

Design features

It is a fair­ly large cylin­dri­cal con­tain­er. Its main struc­tur­al ele­ments are:

  • frame;
  • steel tank;
  • warm­ing;
  • heat exchang­er (steel or brass tube locat­ed near the bot­tom of the boil­er);
  • ther­mome­ter;
  • an anode made of mag­ne­sium and pro­tect­ing the tank from cor­ro­sion.

Due to the pres­ence of a heater in the design of the boil­er, the dai­ly heat loss does not exceed 4 degrees. With a ther­mome­ter, you can know what the tem­per­a­ture of the water is now in the tank.
The mag­ne­sium anode attracts to itself all the elec­tro­chem­i­cal process­es that occur inside the tank. But over time, the anode will need to be replaced, as it is a con­sum­able.

Features of choice

In addi­tion to con­ven­tion­al boil­ers, there are also com­bined devices on the mar­ket that can be con­nect­ed to alter­na­tive heat­ing sources. For exam­ple, in the warm sea­son, when the heat­ing sys­tem is turned off, the boil­er can heat water from solar ener­gy or elec­tric­i­ty.

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Boil­ers of indi­rect heat­ing dif­fer among them­selves pri­mar­i­ly in the vol­ume of the tank. There are tanks, the vol­ume of which is from 5 to 400 liters. The choice of a boil­er should be made based on the num­ber of peo­ple liv­ing in the house, as well as on how much hot water is con­sumed per day.

For exam­ple, in order to sim­ply wash dish­es in the kitchen or wash your hands, a tank vol­ume of 5 to 15 liters will suf­fice. But if a boil­er is need­ed for a bath­room, then it is nec­es­sary to choose a tank with a vol­ume of up to 100 liters. For the pri­vate sec­tor, a boil­er with a 150 liter tank may be required.

Thus, for a fam­i­ly of 1–2 peo­ple, a boil­er of 50–80 liters will be enough. If 3 peo­ple live in the house, then the boil­er must be at least 80–100 liters. For a fam­i­ly of 4–5 peo­ple — 100–150 liters. If more peo­ple live in the house, then a tank of 150–300 liters will be need­ed.

Gas water heater

For mod­ern water heaters, it will not be a prob­lem to pro­vide us with hot water. Whether it is a cot­tage, office or home, a gas instan­ta­neous water heater will work reli­ably and safe­ly. Mod­ern mate­ri­als and tech­nolo­gies have made it pos­si­ble to cre­ate it com­pact and sim­ple, hav­ing nuances that you need to know about before choos­ing a house­hold appli­ance.

A flow­ing gas water heater is known to us by anoth­er name: a geyser. The word “flow” in its name speaks of the prin­ci­ple of oper­a­tion of the device, which con­sists in heat­ing cold water at the moment it flows through the device. The heat of the fire heats the heat exchang­er, which gives it to the water. Using gas as a fuel source cre­ates an easy-to-main­tain and pow­er­ful hot water pro­duc­tion facil­i­ty. The low price of gas guar­an­tees us the oppor­tu­ni­ty to get hot water at the low­est cost. The use of advances in elec­tron­ics allows you to ful­ly auto­mate the entire process of water treat­ment. The user has the most impor­tant priv­i­lege: turn on the device.

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More recent­ly, one could see how some­one, burn­ing their fin­gers, ignites a gas water heater. In mod­ern instan­ta­neous gas water heaters, gas ignites elec­tric­i­ty.

It dif­fers depend­ing on the igni­tion method. piezo­elec­tric and elec­tric. In the first case, the start-up of the water heater is car­ried out by ignit­ing the pilot burn­er using a piezo­elec­tric spark. In gas instan­ta­neous water heaters using the elec­tric method of gas igni­tion, there is no need for a burn­er.
Elec­tri­cal­ly ignit­ed water heaters save on gas, which is prefer­able if bot­tled LPG is used. As a source of ener­gy for igni­tion, automa­tion, as a rule, uses chem­i­cal ener­gy sources (bat­ter­ies).

The pow­er of a gas instan­ta­neous water heater is one of the most impor­tant char­ac­ter­is­tics of the device, mea­sured in kW. For domes­tic pur­pos­es, water-heat­ing equip­ment with a capac­i­ty of 17 to 30 kW is used. When choos­ing a gas instan­ta­neous water heater, you should pay atten­tion to the con­sumed and use­ful pow­er of the device indi­cat­ed in the tech­ni­cal data sheet. They will show the effi­cien­cy of the device and allow you to eval­u­ate its per­for­mance. A flow­ing gas water heater with a use­ful pow­er of 17 kW is capa­ble of heat­ing flow­ing water by 50 degrees Cel­sius at a rate of 4 liters per minute.

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