CN201177393Y - Flat-plate solar collector with low heat loss - Google Patents

Abstract

A low-heat-loss flat-plate solar heat collector, including a side frame, sealing bead, lighting glass, heat-insulating air layer, heat-absorbing sheet, heat-transfer medium pipe, and heat-insulating layer, and a light-transmitting and heat-insulating film attached to the back of the lighting glass , the back side of the combination of the heat-absorbing sheet and the heat-transfer medium pipe is pasted with a space capsule heat-insulating film, and heat-insulating strips are added around the sides where the side frame is in contact with the heat-insulating air layer. The heat loss path of the flat-plate solar collector is effectively controlled, which can greatly reduce the heat loss and improve the heat absorption efficiency of the flat-plate solar collector. According to the test, under the same test conditions, this low-heat-loss flat-plate The heat absorption efficiency of the solar heat collector is 15% to 20% higher than that of the control.

Description

Flat-plate solar collector with low heat loss

Technical field:

The utility model relates to a flat solar water heater, in particular to a flat solar heat collector.

Background technique:

Existing flat-plate solar heat collector is shown in accompanying drawing 1, is made up of side frame 1, sealing bead 2, daylighting glass 3, heat-insulation air layer 4, heat-absorbing plate 5, heat transfer medium pipe 6, insulation layer 7, daylighting Both the glass 3 and the heat absorbing sheet 5 are clamped on the side frame 1, the insulating air layer 4 is located between the lighting glass 3 and the heat absorbing sheet 5, the insulating layer 7 is fixedly arranged on the back of the heat absorbing sheet 5, and the heat transfer medium pipe 6 Distributed in the heat-absorbing sheet 5 at equal intervals, the lighting glass 3 is pressed and sealed on the side frame 1 by the sealing bead 2 . The thermal insulation performance of the flat-plate solar collector of this structure is relatively poor, and part of the heat absorbed by the heat-absorbing sheet 5 is absorbed by the heat transfer medium in the heat transfer medium pipe 6 and transferred to the thermal insulation water tank, and the other part makes the heat in the thermal insulation air layer 4 As the temperature of the gas rises, part of the heat in the insulating air layer 4 will be lost through the metal frame 1 and the lighting glass 3, and at the same time, a part of the heat will also be lost from the back of the combination of the heat absorbing sheet 5 and the heat transfer medium pipe 6. Experiments show that the heat lost through the above-mentioned ways accounts for about 60% to 70% of the heat loss of the entire flat solar collector. It is the main way for the heat loss of the existing flat solar collector. Because the existing flat solar collector The heat loss is higher, so the flat plate solar water heater has not been popularized and applied in a large area. At present, countries around the world are paying more and more attention to the utilization of solar energy. The integrated design of solar energy and buildings has been promoted to a very high scientific research position. The integrated design and construction of solar energy, because the flat-panel solar water heater is the best solar equipment for high-rise buildings, it will enter a new round of research, promotion and application period. At present, people urgently need a flat-panel type water heater with low heat loss Solar heat collectors to meet the needs of high-rise building balcony high-efficiency flat-panel solar water heaters.

Utility model content:

In order to improve the heat absorption efficiency of the flat-plate solar collector, reducing the heat loss of the flat-plate solar collector is the key. The purpose of this utility model is to provide a flat-plate solar collector with low heat loss.

The technical scheme that the utility model takes is:

The low heat loss flat-plate solar collector includes side frame 1, sealing bead 2, lighting glass 3, heat insulating air layer 4, heat absorbing sheet 5, heat transfer medium pipe 6, heat preservation layer 7, heat transfer medium pipe 6 Distributed in the heat-absorbing sheets 5 at equal intervals, the daylighting glass 3 is pressed and sealed on the upper support plate 11 of the side frame 1 by the sealing bead 2, and the heat-absorbing sheets 5 are installed on the lower support plate 12 of the side frame 1, and the heat-insulating air layer 4 is located between the lighting glass 3 and the heat-absorbing sheet 5, and the insulation layer 7 is fixedly arranged on the back of the heat-absorbing sheet 5. Space capsule insulation film 9 is pasted on the back of the combined body with heat transfer medium pipe 6, and insulation strips 10 are all added around the sides where side frame 1 is in contact with thermal insulation gas layer 4.

Since the back side of the daylighting glass 3 is pasted with a light-transmitting heat-insulating film 8, the space capsule heat-insulating film 9 is added on the back side of the combination of the heat-absorbing sheet 5 and the heat-transfer medium pipe 6, and the side frame 1 and the heat-insulating air layer Heat insulation strips 10 are added around the four phases in contact, the heat loss path of the flat solar collector can be effectively controlled, and the heat loss can be greatly reduced, thereby improving the heat absorption efficiency of the flat solar collector. After testing, Under the same test conditions, the heat absorption efficiency of the low heat loss flat-plate solar heat collector is 15%-20% higher than that of the control.

Description of drawings:

Fig. 1 is the structural representation of existing flat solar collector;

Fig. 2 is the structural representation of the utility model;

In the figure: 1-side frame; 2-sealing bead; 3-lighting glass; 4-heat insulating air layer; 5-heat absorbing sheet; 6-heat transfer medium tube; 9-space capsule heat insulation film; 10-heat insulation strip; 11-upper support plate; 12-lower support plate.

Detailed ways:

The specific implementation is described below in conjunction with accompanying drawing:

The low heat loss flat-plate solar heat collector of the utility model, as shown in accompanying drawing 2, it is made up of side frame 1, sealing bead 2, daylighting glass 3, insulating air layer 4, heat-absorbing sheet 5, heat transfer medium pipe 6. The thermal insulation layer 7, the light-transmitting heat-insulating film 8, the space capsule heat-insulating film 9 and the heat-insulating strip 10 are composed, the heat-transfer medium pipes 6 are distributed in the heat-absorbing sheet 5 at equal intervals, and the light-transmitting heat-insulating film 8 is pasted on On the back of the lighting glass 3, the space capsule heat insulation film 9 is pasted on the back of the combination of the heat-absorbing sheet 5 and the heat transfer medium pipe 6, the lighting glass 3 is erected on the upper support plate 11 of the side frame 1, and the heat-absorbing sheet 5 is erected On the support plate 12 of the lower layer of the side frame 1, the heat-insulating air layer 4 is located between the lighting glass 3 and the heat-absorbing sheet 5, and the heat-insulating layer 7 is fixedly arranged on the back of the heat-absorbing sheet 5, and is in contact with the heat-insulating air layer 4 on the side frame 1 All set up insulation bar 10 all around.

Claims (1)

1. A flat-plate solar collector with low heat loss, including side frame (1), sealing bead (2), lighting glass (3), insulating air layer (4), heat-absorbing sheet (5), heat transfer medium The tubes (6), insulation layer (7), and heat transfer medium tubes (6) are distributed in the heat absorbing sheet (5) at equal intervals, and the lighting glass (3) is pressed and sealed on the side frame (1) by the sealing bead (2). On the upper supporting plate (11), the heat-absorbing sheet (5) is installed on the lower supporting plate (12) of the side frame (1), and the thermal insulation air layer (4) is located at the lighting glass (3) and the heat-absorbing sheet (5) Between, the thermal insulation layer (7) is fixedly arranged on the back side of the heat-absorbing sheet (5), and is characterized in that: a light-transmitting heat-insulating film (8) is pasted on the back side of the lighting glass (3), and a heat-absorbing sheet (5) The back side of the combination with the heat transfer medium pipe (6) is pasted with a space capsule heat insulation film (9), and heat insulation strips (10) are all added around the sides where the side frame (1) contacts with the heat insulating air layer (4).