When designing a heating system for a house,owners are required to know in advance how much heating will cost their living space in the process of operation. In the end, it may be that the heating system will be trivial unprofitable in case of wrong choice of equipment, illiterate drafting or weak thermal insulation of the walls. Therefore, it is important to correctly calculate the gas consumption for heating the house by 200 m2. From the received figure it is already possible to start and proceed or not to start designing and purchasing equipment.
One of the main values in the formula when calculating -this is the power of the equipment. Without it, it is impossible to determine the gas consumption for heating the house by 200 m2. Select the boiler based on the area of the house, and when calculating the flow are guided by the lowest temperature outside the window. The resulting value is divided in half, because in the street is not always below zero temperature. So the consumption will vary approximately in the same proportions.
When calculating the consumption of liquefied gas for heatinghouses of 200 m2 in the first place determine the power of the boiler. It is assumed that for every 10 square meters of heating space, 1 kW of power is needed. Proceeding from the fact that the value should be divided in half, take half - it's 50 watts per hour per square meter. At 100 meters square we need 5 kW of power; at 200 meters - 10 kW. This means that when choosing a boiler we need to look for models with a power of 12-15 kW. It is recommended to choose the equipment with a margin. If you choose a boiler with a capacity of 10 kW, then it must cope with its task, but if somewhere the heat losses in the house will be higher than expected, then the boiler will work at the limit of its capabilities and will not always be able to provide proper heating.
There is a special formula for calculating:
A = Q / q * B.
In this formula:
All the figures are known to us. Now you just need to substitute them in the formula:
A = 10 / 9.45 * 0.95 = 1.0053 cu. m / hour.
This means that the average consumption of gas for heatingAt home on 200 m2 is 1 cubic meter per hour. But this is provided that you use a boiler with an efficiency of 95%, and in your gas pipeline there is gas grade G20. Otherwise, the values in the formula need to be changed, the result will be slightly different.
Now it remains for us to multiply the figure obtained by24, and we will get a daily gas flow, provided that the equipment is in continuous operation. Then multiply the value by 30 and get a monthly gas flow. In our case, the flow will be 720 cubic meters. In principle, this is a real gas consumption for heating a house of 200 m2, you need to know the cost of one cubic meter for your region and calculate how much it will cost.
The above formula will work forof liquefied gas. The only difference is the other thermal conductivity of the gas itself. Therefore, here the parameter q is assumed to be 46 MJ per kilogram or 12.8 kW per kilogram. Let's leave the efficiency of the boiler equal to 95. Substitute the values in the formula and get:
A = 10 / 12.8 * 0.95 = 0.74 kg / hour.
Liquefied gas is always considered in kilograms. Then the value is translated into liters. For this, the value obtained should be divided by 0.54. In our case, a flow of 1.37 liters of gas per hour is obtained. Further, according to the usual pattern:
It should be noted that in a standard cylinderis only 42 liters. This balloon is enough for about a day. To understand how many cylinders we need, simply divide the amount of gas for a season by 42. Further, knowing the cost of a LPG tank, you can calculate how much heating costs the house will cost.
However, it is not necessary to buy cylinders. You can use gasholder. The gas consumption for heating the house by 200 m2 in this case will not differ. Simply uploading a large amount of gas to the gas holder at once for a whole season will be more profitable than buying a large number of cylinders.
This is known: if the house is warmed well, the fuel consumption for heating will be substantially reduced. Therefore, before starting the selection and installation of equipment and laying the main roads, it is necessary to warm the house well: walls, roof and attic, floor, replace the windows, make a tight sealing circuit on the doors.
Particular attention should be paid to the roof and windows. It is assumed that out of 100% of the lost heat, 35% goes through the roof, about 25% is lost on the windows. Therefore, use the best thermal insulation materials and good double-glazed windows, which have a low coefficient of thermal conductivity. Cheap double-glazed windows are immediately visible: their aluminum or steel "skeleton" in winter is always very cold, and directly through it much heat is lost. Even the glass itself does not pass so much heat, as does the metal profile on which these glasses hold.
Also the correct heating project playsan important role. It is estimated that a correctly designed and implemented warm floor will reduce gas consumption. Conventional batteries would require more gas to heat the air indoors to the same level. This is due to the fact that thanks to the warm floor, the heat rises from the bottom up and spreads throughout the entire area of the room. But ordinary batteries warm the outer wall, because of what their efficiency is lower.
Also the standard of floor temperature is 50 degrees,batteries - 90 degrees. Obviously, floors will be more efficient and economical. Yes, the design and laying of the floors will cost more, but the difference in price will pay off very soon.
Well, and obvious things: You can save gas by correctly tuning the heating in time. For example, if you are not at home from morning till night, then in the boiler (if it supports this function) you can set a low temperature on the thermostat and program the increase in power by a certain time. And if you do not happen at home for weeks or even months, then ideally you need to set the temperature of the coolant to 3-5 degrees. And let the house be cold. The main thing is that the pipes do not freeze.
In this respect, modern technologies have gone farforward. Many boilers can be equipped with modern automation, which will allow to control the device remotely. You can use your smartphone to ask the boiler command to change the mode while at work. To do this, special GSM modules are installed on the equipment. And there are many similar smart systems. With proper use of these, the actual consumption for heating can be reduced. Sometimes savings can reach 30, 40 and even 50%. Of course, this depends on how often you are at home and what the temperature is outside the window.
</ p>
