CN206709194U - A kind of energy-conserving heating device using solar energy - Google Patents

Abstract

The utility model discloses an energy-saving heat supply device utilizing solar energy, which comprises a vertical water tank. Three sets of heat exchange coils are arranged in the vertical water tank from bottom to top, and a water inlet and an outlet are also arranged on the vertical water tank. Water port; wherein the first heat exchange coil at the bottom is connected with the solar photothermal cycle assembly through the main heat source circulation inlet and the main heat source circulation outlet arranged on the surface of the vertical water tank; the second heat exchange coil in the middle is connected through the The auxiliary heat source circulation inlet and the auxiliary heat source circulation outlet on the surface of the vertical water tank are connected with the external auxiliary heat source; connected to the circulator. In winter, make full use of the heat energy obtained by solar heat collection for heating, and solve more than 60% of the energy consumption demand for heating and hot water through the solar heat collection area of less than 10% of the building area.

Description

An energy-saving heating device utilizing solar energy

technical field

The utility model relates to an energy-saving heating device using solar energy, which belongs to the fields of solar energy utilization and building energy conservation.

Background technique

At present, indoor heating is in the form of gas, coal or oil-fired water heaters, direct electric heating or air-conditioning heating, but no matter which one needs to consume a large amount of fossil energy, it will increase the burden of environmental pollution. On the other hand, my country is the country with the largest amount of solar energy utilization in the world, but the application of solar thermal energy generally stays at the level of providing domestic hot water. Because, until now, the way of using solar thermal energy for heating in my country, the reliability and efficiency of heating are not ideal, so it is not accepted by the majority of users. And usually the quantitative ratio between the solar energy available to the building and the heating design needs also leads to the potentially expensive budget of the solar system.

After research and calculation, it is found that with the improvement of energy-saving standards for building maintenance structures, the heating demand of our new buildings has actually decreased a lot. If the system is optimized scientifically, a proper solar thermal collection system can meet most of the heating demand of 65% energy-saving residential buildings in hot summer and cold winter regions.

Utility model content

The technical problem to be solved by the utility model is to provide an energy-saving heating device utilizing solar energy, which can fully utilize the heat energy obtained by solar heat collection for heating in winter, and solve the problem of more than 60% of the building area through the solar heat collection area of less than 10% Energy requirements for heating and hot water.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

An energy-saving heating device utilizing solar energy, comprising a vertical water tank, in which three sets of heat exchange coils are arranged from bottom to top, and a water inlet and a water outlet are also arranged on the vertical water tank;

Wherein the first heat exchange coil at the bottom is connected to the solar photothermal cycle assembly through the main heat source circulation inlet and the main heat source circulation outlet arranged on the surface of the vertical water tank;

The second heat exchange coil in the middle is connected to the external auxiliary heat source through the auxiliary heat source circulation inlet and the auxiliary heat source circulation outlet arranged on the surface of the vertical water tank;

The third heat exchange coil at the top is connected with the heating circulation device through the heating circulation inlet and the heating circulation outlet arranged on the surface of the vertical water tank.

The aforementioned energy-saving heating device using solar energy is characterized in that: the vertical water tank is a closed box surrounded by hot water erosion-resistant materials, and the outer surface of the vertical water tank is tightly covered with gaps Efficient insulation without cold bridges.

The aforementioned energy-saving heating device using solar energy is characterized in that: the high-efficiency thermal insulation layer is made of an integral self-foaming thermal insulation material with an outer protective shell and a thermal conductivity ≤ 0.03W/MK, and the thickness of the thermal insulation layer is greater than 75 mm, the heat transfer coefficient of the composition box is ≤0.3W/M ² K, and the 24-hour heat loss of the water tank is ≤0.5KWh/100L.

The aforementioned energy-saving heating device using solar energy is characterized in that: the vertical water tank is also provided with a temperature detection probe and an anti-corrosion protective magnesium rod.

The aforementioned energy-saving heating device using solar energy is characterized in that: the bottom of the vertical water tank is provided with a sewage outlet, and the top is provided with an exhaust and pressure relief outlet.

The aforementioned energy-saving heating device using solar energy is characterized in that: the main heat source circulation outlet, the main heat source circulation inlet, the auxiliary heat source circulation outlet, the auxiliary heat source circulation inlet, the heating circulation inlet, the heating circulation outlet, the water inlet, the outlet The water outlet, sewage outlet, exhaust and pressure relief outlet, temperature detection probe, and corrosion protection magnesium rod are all connected to the vertical water tank by means of a thermal break bridge connection with the outer shell.

The aforementioned energy-saving heating device using solar energy is characterized in that: the fluid pump power of the solar photothermal cycle component is consistent with the thermal power self-circulation direction of the heat exchange fluid after absorbing solar energy, and has a positive differential pressure switch. After obtaining solar heat, it starts automatically, and a check valve is set in the loop direction to prevent backflow from causing heat loss from the water tank.

The aforementioned energy-saving heating device using solar energy is characterized in that: the external auxiliary heat source and the fluid pump power of the heating cycle device are both the thermal power of the heat exchange fluid after heat exchange in the vertical water tank The self-circulation direction is the same.

The aforementioned energy-saving heating device using solar energy is characterized in that: the external auxiliary heat source is one of gas/fuel oil water heater, heat pump or electric heater.

The beneficial effects of the utility model are:

1. Using the system operation mode based on the principle of fluid thermodynamics, the solar cycle heat exchange is located at the lowest part of the water tank, so that the heat exchange is the most sufficient, which improves the thermal efficiency of the solar heat collection system and ensures the priority use of solar energy. All heat exchanges are in line with the cross direction Process, high heat exchange efficiency, and low energy consumption of cycle power;

2. Vertical temperature stratification and efficient water tank insulation and interface broken bridge design make the heat loss of the water tank low and the heat utilization rate high;

3. The minimum temperature of domestic hot water, the minimum outlet water temperature of the heating cycle and the maximum return water temperature of the heating cycle are controlled by the mechanism to make the control and feedback of the system simple and reliable, control with the lowest energy consumption demand, and make full use of the heat energy of the upper part of the water tank , give priority to the use of solar energy;

4. The vertical water tank occupies a small area and is allowed to be set up on the balcony, which is convenient for ordinary residential use;

5. Through the supporting low-temperature energy-saving heating system, such as ceiling/wall radiation or low-temperature radiators, in hot summer and cold winter regions with an energy saving standard of 65%, the indoor control in winter is not lower than 18°C, and there is heat recovery fresh air/ventilation In the residential buildings with equipment, the solar collector modules with a building area of less than 10% of the building area that do not affect the full window sunlight in winter can be used to solve more than 60% of the energy consumption demand for heating and hot water; Area promotion can save a lot of fossil energy and reduce environmental burden while improving indoor comfort in the southern region.

Description of drawings

Fig. 1 is a structural schematic diagram of an energy-saving heating device utilizing solar energy of the present invention.

detailed description

The utility model will be further described below in conjunction with specific embodiments.

As shown in Figure 1, an energy-saving heating device using solar energy includes a vertical water tank 1, and three sets of heat exchange coils are arranged in the vertical water tank 1 from bottom to top, and the vertical water tank 1 is also provided with Water inlet 9 and water outlet 10;

The first heat exchange coil 13 at the bottom is connected to the solar photothermal cycle assembly 20 through the main heat source circulation inlet 4 and the main heat source circulation outlet 3 arranged on the surface of the vertical water tank 1; the middle second heat exchange coil 14 is connected to the external auxiliary heat source 30 through the auxiliary heat source circulation inlet 6 and the auxiliary heat source circulation outlet 5 arranged on the surface of the vertical water tank 1;

The third heat exchange coil 15 on the top is connected with the heating circulation device 40 through the heating circulation inlet 7 and the heating circulation outlet 8 arranged on the surface of the vertical water tank 1 .

In this embodiment, the vertical water tank 1 is a water tank with sufficient height and volume, which is enclosed by hot water resistant materials such as stainless steel or enamel steel plates to form a closed box, allowing vertical layered temperature differences in the internal water temperature. The volume of the water tank is determined by the heat load demand and the corresponding requirements of the size of the solar thermal panel. Usually, the indoor use area per square meter is not less than 4 liters; the height of the water tank is determined by the height space required by each heat exchange/heating coil.

The vertical water tank 1 is a closed box surrounded by materials resistant to hot water erosion, and the outer surface of the vertical water tank 1 is tightly covered with a high-efficiency thermal insulation layer 2 without gaps and cold bridges. The high-efficiency thermal insulation layer 2. It is made of an integral self-foaming insulation material with an outer protective shell and a thermal conductivity of ≤0.03W/MK, and the thickness of the insulation layer is greater than 75mm, and the heat transfer coefficient of the composed box is ≤0.3W/M ² K. Loss ≤ 0.5KWh/100L.

In addition, the solar photothermal cycle assembly 20, the external auxiliary heat source 30, and the heating cycle device 40 are arranged in partitions in the water tank space from bottom to top, and each involved cold and heat cycle is the upper part for the entry and exit of the cycle with high temperature, and the lower part for the temperature Lower in and out. Wherein, the external auxiliary heat source 30 is one of a gas/fuel oil water heater, a heat pump or an electric heater. Of course, the external auxiliary heat source 30 can also be replaced by an electric heat source if necessary, and is heated by night-time off-peak electricity.

The vertical water tank 1 is also provided with a temperature detection probe 16 and an anti-corrosion protection magnesium rod 17, wherein the anti-corrosion protection magnesium rod 17 is arranged in the middle of the water tank, and the temperature detection probe 16 is arranged near the water outlet 10. The bottom of the vertical water tank 1 is provided with a sewage outlet 11 , and the top is provided with an exhaust and pressure relief outlet 12 .

The main heat source circulation outlet 3, the main heat source circulation inlet 4, the auxiliary heat source circulation outlet 5, the auxiliary heat source circulation inlet 6, the heating circulation inlet 7, the heating circulation outlet 8, the water inlet 9, the water outlet 10, the sewage outlet 11, the exhaust The pressure relief port 12, the temperature detection probe 16, and the corrosion protection magnesium rod 17 are all connected to the vertical water tank 1 by means of a thermal break bridge with the outer casing to reduce heat loss. The external interface and external pipes of the vertical water tank 1 all adopt insulation measures to reduce heat loss, and because cold water is replenished from the bottom, it is not easy to lose heat energy through cold water pipes.

The system operation mode in this embodiment is divided into two modes: no heating mode and heating mode mode. At least three control temperatures are set for system operation, which are the lowest temperature of domestic hot water T1, the lowest outlet water temperature T2 of the heating cycle, and the highest return water of the heating cycle. For temperature T3, water temperature probes are installed on the outer pipes of the heating circulation inlet 7 and the heating circulation outlet 8 . When the heating mode is not turned on, the external auxiliary heat source 30 is only enabled when the temperature measured by the internal temperature detection probe 16 of the water tank near the water outlet 10 is lower than the set domestic hot water minimum temperature T1, otherwise it indicates that the hot water obtained by solar energy The temperature meets the requirements, and the external auxiliary heat source 30 does not work. When the heating mode is turned on, when the temperature measured at the outlet 8 of the heating cycle is lower than the recommended minimum heating cycle outlet water temperature T2 for the working temperature of the heating method (such as floor heating, ceiling radiation, wall radiation, low-temperature radiator), or at When the temperature measured by the temperature detection probe 16 near the water outlet 10 is lower than the minimum temperature T1 of the domestic hot water, the external auxiliary heat source 30 is activated; When the temperature measured at inlet 7 is higher than the maximum heating cycle return water temperature T3 recommended by the working temperature of the heating mode, the external auxiliary heat source is disabled. If necessary, the system also supports more complex energy-saving control and operation modes, which will not be repeated here.

The fluid pump power of the solar photothermal cycle component 20 is consistent with the self-circulation direction of the thermal power after the heat exchange fluid absorbs solar energy. It has a positive differential pressure switch, which starts automatically after obtaining solar heat, and sets a check in the loop direction. The valve prevents backflow from causing heat transfer from the water tank to the outside. The fluid pumping power of the external auxiliary heat source 30 and the heating circulation device 40 is consistent with the thermodynamic self-circulation direction of the heat exchange fluid after heat exchange in the vertical water tank 1 .

To sum up, the utility model provides an energy-saving heating device using solar energy, which fully utilizes the heat energy obtained by solar heat collection for heating in winter, and solves more than 60% of the problem by using solar heat collection area of less than 10% of the building area. Energy requirements for heating and hot water.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims (9)

1. An energy-saving heating device using solar energy, characterized in that it includes a vertical water tank (1), and three sets of heat exchange coils are arranged in the vertical water tank (1) from bottom to top, and the vertical water tank ( 1) It is also provided with a water inlet (9) and a water outlet (10); The first heat exchange coil (13) at the bottom communicates with the solar photothermal cycle assembly (20) through the main heat source circulation inlet (4) and the main heat source circulation outlet (3) arranged on the surface of the vertical water tank (1). connect; The middle second heat exchange coil (14) is connected to the external auxiliary heat source (30) through the auxiliary heat source circulation inlet (6) and the auxiliary heat source circulation outlet (5) arranged on the surface of the vertical water tank (1); The third heat exchange coil (15) at the top is connected with the heating circulation device (40) through the heating circulation inlet (7) and the heating circulation outlet (8) arranged on the surface of the vertical water tank (1). 2. An energy-saving heating device using solar energy according to claim 1, characterized in that: the vertical water tank (1) is a closed box surrounded by hot water erosion-resistant materials, and the The outer surface of the vertical water tank (1) is tightly covered with an efficient thermal insulation layer (2) without gaps or cold bridges. 3. An energy-saving heating device using solar energy according to claim 2, characterized in that: the high-efficiency insulation layer (2) is an integrated self-foaming insulation with an outer protective shell, and the thermal conductivity is ≤0.03W/MK It is made of materials, and the thickness of the insulation layer is greater than 75 mm, the heat transfer coefficient of the composed box is ≤0.3W/M ² K, and the heat loss of the water tank in 24 hours is ≤0.5KWh/100L. 4. An energy-saving heating device using solar energy according to claim 1, characterized in that: the vertical water tank (1) is also provided with a temperature detection probe (16) and an anti-corrosion protective magnesium rod (17) . 5. An energy-saving heating device using solar energy according to claim 4, characterized in that: the bottom of the vertical water tank (1) is provided with a sewage outlet (11), and the top is provided with an exhaust and pressure relief port ( 12). 6. An energy-saving heating device using solar energy according to claim 5, characterized in that: the main heat source circulation outlet (3), the main heat source circulation inlet (4), the auxiliary heat source circulation outlet (5), the auxiliary Heat source circulation inlet (6), heating circulation inlet (7), heating circulation outlet (8), water inlet (9), water outlet (10), sewage outlet (11), exhaust pressure relief outlet (12), temperature detection The probe (16) and the anti-corrosion protective magnesium rod (17) are all connected to the vertical water tank (1) in the way of connecting with the heat break bridge of the outer casing. 7. An energy-saving heating device using solar energy according to claim 1, characterized in that: the fluid pump power of the solar photothermal cycle component (20) and the thermal power self-circulation direction of the heat exchange fluid after absorbing solar energy Consistent, with a positive differential pressure switch, it starts automatically after obtaining solar heat, and a check valve is set in the loop direction to prevent backflow from causing heat transfer from the water tank to the outside. 8. The energy-saving heat supply device using solar energy according to claim 1, characterized in that: the fluid pump power of the external auxiliary heat source (30) and the heating circulation device (40) are both within the same distance as the heat exchange fluid The thermodynamic self-circulation direction after heat exchange in the vertical water tank (1) is consistent. 9. The energy-saving heating device using solar energy according to claim 1, characterized in that: the external auxiliary heat source (30) is one of a gas/fuel oil water heater, a heat pump or an electric heater.