RU132165U1 - RADIATOR-MINI-BOILER - Google Patents

Abstract

A mini-boiler electric radiator comprising a housing filled with a liquid coolant, having an electric water heater with a temperature controller, characterized in that the housing is made of a rectangular shape from sheet metal, the dimensions of the housing are selected so as to fit a maximum amount of heat carrier of 25 l / heated area in order to increase its heat capacity; an electric water heater with a temperature regulator is connected to an electrical outlet with an integrated daily timer, while the case of the electric radiator-mini-boiler is equipped with a shielding shutter made of heat-insulating material to regulate the optimal heat flow by covering and opening the active surface of the heat sink of the radiator at the time of maximum heating and during gradual cooling it when the electric water heater is turned off.

Description

The utility model relates to heat engineering, in particular to systems for heating premises for various purposes.

Known electric radiator, made in the form of a housing filled with a coolant, with a heating element installed in its lower part, isolated from the total volume of the coolant and installed in a separate detachable housing of small volume, hermetically connected to the radiator by the inlet and outlet pipes (see Certificate for a utility model of the Russian Federation No. 11308, IPC F24D 13/04, publication September 16, 1999).

Known oil-filled electric radiator containing serially connected plate sections, a control unit and a heating element located in the lower part of the electric radiator. The control unit contains a switch, a temperature controller, a fuse and electrical wires (see RF Patent No. 2336479, IPC F28F 3/12, publication October 20, 2008).

The closest analogue of the claimed utility model is an electric radiator, consisting of a box-shaped case made of U-shaped halves connected to a “lock”, on one of which a guide wall is fixed. The electric heating element is installed along the entire length of the housing, which is filled with coolant (see Patent for the invention of the Russian Federation No. 2143644, IPC F24D 13/04, H05B 3/60, publication December 27, 1999), taken as a prototype.

The main disadvantages of analogues and prototype is the small volume of coolant in the housing and, accordingly, low heat storage capacity and energy efficiency.

The task to which the claimed utility model is directed is to expand the possibilities of using electric energy for heating purposes in areas with existing two- and three-rate tariffs for payments for electricity consumption.

The technical result achieved during the implementation of the claimed utility model consists in expanding the operational capabilities, the use of electric heating devices, increasing the efficiency and effectiveness of using these types of devices.

The specified technical result is achieved by the fact that in an electric radiator-mini boiler, containing a housing filled with a liquid coolant having an electric heater with a temperature regulator, according to a utility model, the housing is made of a rectangular shape from sheet metal, the dimensions of the housing are selected so as to fit the maximum amount of heat carrier from calculation of 25 liters per 1 square meter of heated area, in order to increase its heat capacity; an electric water heater with a temperature regulator is connected to an electric outlet with a daily timer, while the case of the electric radiator-minicot is equipped with a shielding shutter made of heat-insulating material to control the optimal heat flux by covering and opening the active surface of the heat transfer of the radiator at the time of maximum heating and during its gradual cooling when disconnected water heater.

The utility model is illustrated by the drawing: in Fig.1 - electric radiator-mini-boiler, general view.

The mini-boiler electric radiator includes a housing 1 in the form of a rectangular sealed container with a height of 0.73 m, a thickness of 0.2 m, a length determined at the rate of 25 liters of liquid per 1 sq. m. of a heated area made of sheet steel or aluminum, filled with water or non-freezing liquid, an electric water heater with a temperature regulator 2, consisting of two heating elements of the Ariston type with a power of 1.2 and 1.5 kW, connected to an electric outlet with an integrated daily timer 3 using an electric cord with connector 4.

To increase the efficiency of convective heat transfer of the radiator, there are air channels on the rear surface of the housing 1 made of vertically mounted metal profiles 5. To regulate the heat flow from the radiator to the heated room, the housing 1 is equipped with a shielding curtain 6 made of heat-insulating material suspended by means of movable rings 7 to curtain 8. For stable installation of the radiator on the horizontal surface of the floor of the room at the bottom of the housing 1 there are legs 9.

If necessary, in order to increase the heat transfer of the mini-boiler electric radiator, a fan is installed on case 1 (not shown in the drawing).

The action of the mini-boiler electric radiator is as follows.

A prerequisite for using a mini-boiler electric radiator is the use of two or three-part tariffs for calculating electricity consumption. On an electric water heater with a temperature regulator 2, the range for regulating the temperature of the liquid in the housing 1 is set, and on the daily timer 3, the operating time of the electric radiator-mini boiler is set based on the fact that during the night (lower) tariff for electricity, that is, from 23 hours to 7 in the morning, it should operate in maximum power mode to ensure heating heat load and at the same time accumulate heat energy with the available liquid supply in case 1, and automatically turn off the time 3 rum electric heater with temperature controller 2 after a predetermined time.

After the specified time, that is, after 7-00 o’clock in the morning, with the daily timer 3, when the electric water heater with thermostat 2 is turned off, the heat transfer of the radiator is carried out for some time in the economical mode of heat transfer accumulated (accumulated) during the night, with the available liquid supply in building 1, without spending electrical energy, the cost of which in this period of time is set at the daily (higher) rate.

If the temperature of the liquid inside the housing 1 drops to the minimum set value, the electric water heater with thermostat 2 is turned on again and heating of the water to the maximum set value begins.

At the same time, energy is consumed at the daily rate. The optimal heat flow from the radiator to the heated room is regulated by moving the shielding curtain along the housing 1, opening more or less the heat transfer surface of the radiator, preventing premature cooling of the liquid in it.

In an electric radiator-mini-boiler equipped with an electric fan, the heat transfer is additionally regulated by turning on and off the electric fan.

With a three-part electricity billing rate, using the daily timer 3, it is possible to set the time for switching the radiator to economy mode, additionally, when switching from a lower tariff in the half-peak period to a higher tariff in the peak period.

Example. In a building with an area of 11 square meters located in a residential building in the Amur Region, an electric radiator-mini-boiler with a water volume of 280 liters in the building is installed. The water temperature range specified by the thermostat is T _max = 84 degrees; T _min = 44 degrees.

The heat flux (heat transfer) entering the room from the radiator when the water cools from T _max to T _min will be equal to (corresponds to the economical mode of operation of the radiator with the heater turned off during the validity of the daily tariff for the use of electricity).

Q = 280 L * 1 kcal / kg. hail. * (84 hail-44 hail) = 11200 kcal or 13 kWh,

where 280 l is the volume of water in the radiator body;

1 kcal / kg. hail - beats. heat capacity of water;

84 degrees; 44 degrees - respectively the maximum and minimum water temperature.

Estimated (hourly) heat load for heating a room with an area of 11 sq. M. for the city of Blagoveshchensk, Amur Region

Qot = 11 * 3 * 0.5 * (20 + 34) = 891 kcal, hour or 1.03 kW,

where 11 sq.m. - area of the room; 3 m - estimated room height;

0.5 kcal / m3 hail. C is the specific heating characteristic of the building (see Adjustment and operation of water heating networks: a reference book. - M: Stroyizdat, 1988. - P.23);

34 degrees - calculated for heating the outdoor temperature

(see Adjustment and operation of water heating networks: reference book. - M.: Stroyizdat, 1988.- P.7);

20 degrees - the estimated temperature of the internal air.

Hence, the cooling time of water from T = 84 degrees to T = 44 degrees, that is, the time of the radiator in economy mode, will be:

Τ = 13 kWh: 1.03 kW. = 13 hours.

Which corresponds to the data obtained experimentally, shown in table 1.

In monetary terms, with a daily rate of 2.48 rubles / kW for a two-part electricity tariff for the Amur Region, the savings compared to an electric radiator of the same capacity, but without an accumulating water supply and a continuously operating electric heater, will be:

S _day = 13 kWh * 2.48 rubles / kW = 32.24 rubles. per day

or

S _year = 32.24 rubles. * 212 days * 0.6 = 4100.93 rubles. year,

where 212 _days is the number of days in the heating season for the city of Blagoveshchensk, Amur Region.

0.6 - seasonality coefficient, averaging the consumption of the maximum heating load in a year.

Table 1. Experimental data date of Time Meter reading Temperature in the room water 02.02 8-30 7846 21 51 10-00 7849 22 54 the second heater is turned on 11-00 7851.5 23 58 12-00 7854.2 24 62 13-00 7857 24 68 disconnected from the network 17-00 7858 22 59 21-00 7858 21 52 22-00 7858 twenty fifty 23-00 7858 19 49 23-26 7858 19 49 timer on 02/03 0-20 7860 21 52 7-40 7880 21 80 timer off 10-00 7880 22 72 11-00 7880 23 70 18-40 7880 22 52 20-00 7880 21.5 49 21-00 7880 21.5 48 22-00 7880 21 47 23-15 7880 21 44 timer on 02.02 8-28 7901 21 84 10-10 7901 22 70

The maximum consumption of electric energy for heating (accumulating) heat by the heat carrier in the case and to compensate for the constant constant heat loss of the room occurs during the night period during the night (cheap) tariff, and the moment of disconnection from the electric network occurs automatically by the built-in daily timer during the termination of the night tariff and the transition to the daily (expensive) tariff, while in order to compensate for the current heat loss of the room, the accumulated heat carrier returns the heat, time, without the consumption of electrical energy.

The use of the proposed mini-boiler electric radiator can reduce the cost of electric energy in areas with existing two- and three-rate tariffs for payments for electricity consumption, because of this, operational capabilities are expanded, the cost-effectiveness and efficiency of the use of mini-boiler electric radiators is increased.

The proposed utility model can find application in autonomous heating of apartments, houses or industrial premises.

Claims (1)

A mini-boiler electric radiator comprising a housing filled with a liquid heat carrier, having an electric water heater with a temperature controller, characterized in that the housing is made of a rectangular shape made of sheet metal, the dimensions of the housing are selected so as to fit a maximum amount of heat carrier of 25 l / m ^{2 of} heated area in order to increase its heat capacity; an electric water heater with a temperature regulator is connected to an electrical outlet with an integrated daily timer, while the case of the electric radiator-mini-boiler is equipped with a shielding shutter made of heat-insulating material to regulate the optimal heat flow by covering and opening the active surface of the heat sink of the radiator at the time of maximum heating and during gradual cooling it when the electric water heater is turned off.

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