ES1072227U - Solar panel evaporator direct expansion and double captation (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Direct expansion and double uptake evaporator solar panel (1), characterized by having means of capturing solar and environmental energy (2), consisting of a metal panel that incorporates a radiation absorber coating, and that contains a circuit (6) for the circulation of refrigerant fluid, which evaporates thanks to the energy captured; also having means for collecting and accumulating solar energy (3), connected in series with the above means, to promote the evaporation of the fluid in the presence of low temperatures, consisting of a panel that incorporates a circuit (7) for circulation of the refrigerant fluid, an absorber of the solar radiation, a cover (8) that generates the greenhouse effect inside the panel, and thermal insulation (9) to avoid losses with the environment. (Machine-translation by Google Translate, not legally binding)

Description

Direct expansion evaporator solar panel and double uptake

Technical sector

The present invention is related to solar energy collection and utilization systems and environmental, specifically with the evaporating solar panels of Direct expansion intended for water heating.

Background of the invention

They are well known in the current state of the technique, the water heating equipment that counts with a heat pump, whose condenser is in contact with the water to be heated, and its evaporator is constituted by a direct expansion metal panel, exposed to the sun, so that it is capable of capturing solar and environmental energy to transmit it to Water. These types of heat pump systems reduce their performance as the outside temperature decreases, and despite be in the presence of solar radiation, the losses that the panel are so high, that evaporation is hindered, and by Both water heating.

However, the inventor does not have any knowledge of a device such as that presented by said application, consisting of a direct expansion evaporator panel designed to capture solar and environmental radiation, in any weather situation and even in the face of low temperatures, of so that the efficiency of the pump system will be increased heat to which it is incorporated. This is because the panel It has two components: a fully evaporating first part discovered, capable of capturing solar and environmental energy by both faces, and a second part also evaporator that includes cover and isolation, the latter being able to capture and accumulate the incident solar radiation, and transmit it to the fluid flowing through its interior, and therefore favor evaporation when it is not possible to carry out in the uncovered part, due to the casualties temperatures

As a final result a panel has been obtained that it has the advantage of being able to increase the performance of the water heater by heat pump of which it is part, guaranteeing the evaporation of the cooling fluid thanks to the solar and environmental gain obtained, even with low temperature ambient.

Description of the invention

Specifically, the object of the invention is a direct expansion evaporator panel, consisting of two zones of differentiated collection. A first part is formed by a panel fully discovered evaporator, which contains a circuit for circulation of refrigerant fluid throughout its entire surface, and which is made of metallic material, which favors the accumulation of environmental energy. It also incorporates a coating radiation absorber that favors solar gain. Of this mode, under normal conditions of average ambient temperatures, the low pressure coolant that arrives from the equipment heat pump, would go completely to gaseous state due to the external energy absorption that takes place on both sides of the panel. However, if temperatures are too low, it is it is likely that the fluid does not complete the change of state, with consequent liquid shock problems in the compressor, performance decrease, etc., so a additional energy input to ensure that the evaporation. Therefore, the double feedback evaporator panel It has a second part located after this first, which is composed of a panel with cover, of an element solar radiation absorber, thermal insulation and a circuit for the circulation of the fluid. In this way, solar radiation incident on the cover, reaches the absorber element, transforming into thermal energy that can be used by the fluid that circulates through the panel, which is in intimate contact with the absorber element. The captured energy is accumulated inside the panel due to the greenhouse effect generated by the cover. Also, the sides and the back are insulated, avoiding thermal losses with the outside.

In this way, an evaporator panel is obtained able to guarantee the evaporation of refrigerant in a wide range of climatic situations, which facilitates the installation of water heating equipment by heat pump, highly efficient in itself, in areas where a common evaporator panel I would not work properly.

The final aesthetics of the evaporator solar panel direct expansion and double uptake, it can be as diverse as designs are to be made of it always keeping the indispensable technical requirements for its operation.

We understand therefore that the improvement with accessory elements or different forms of the object here presents are not elements that come to create this invention another new and different with enough inventive novelty.

It is not considered necessary to make the content of this description for a subject matter expert can understand its scope and the advantages derived from the invention, as well as develop and implement the object of the same.

Description of the drawings

To complete the description that is being performing and in order to help better compression of peculiarities of the direct expansion evaporator solar panel and double uptake that we propose, is accompanied by this report descriptive, as an integral part thereof, of the drawings arranged on the following pages in which, with character explanatory and not limiting in any case, what has been represented next:

Figure 1, in which a scheme of solar panel evaporator direct and double expansion uptake, where its main components are shown.

Figure 2, in which a direct and double expansion evaporator solar panel scheme integrated collection in a water heater by pump hot.

Description of a preferred embodiment

The detailed description of the embodiment preferred of the process of the present invention and of the elements that compose it, it is done in view of figures 1 and 2. Figure 1 shows the solar expansion evaporator panel direct and double collection (1), which, is constituted in this preferred embodiment by a first evaporator part (2), formed by a roll-bond type panel, composed of in turn by two electro-welded metal plates, which delimit a circuit (6) across its entire surface. This panel incorporates on the surface exposed to the sun with a radiation absorbing coating, to favor the gain solar of the same. Therefore, in this first part the exchange of the fluid with the environmental energy contained in the air located around the panel, as well as with incident solar energy about it.

The second part of the panel (3), connected to continuation of this first part, it is formed by a sensor solar thermal tube vacuum heat pipe type, which counts with a set of glass tubes (8), which capture the incident solar radiation and transform it into thermal energy, the which transmit to the fluid that circulates through its inner circuit (7), which is covered with insulating material (9). Each tube It has a double glass wall, inside which makes the vacuum, so that thermal losses are avoided by convection and outward conduction. Said glass cover generates the greenhouse effect inside the tube, so that largely prevents the dissipation of solar energy captured.

When built in this way, the solar panel direct expansion and double collection evaporator (1) constitutes a compact set thanks to the roll-bond panel (2) can be located on the back of the vacuum tube panel (3) as seen in figure 1. Thus solar radiation incident will reach both the tubes and the rear panel due to the gaps that remain between them. Therefore, this form Constructive allows saving space on decks.

Figure 2 shows the connection mode solar panel evaporator direct expansion and double capture (1) inside a water heater by heat pump (12). This equipment consists of a compressor (13) that aspirates the refrigerant gas and it drives it towards the condenser (15), where the energy exchange necessary for the gas to pass to phase liquid, thus heating the water accumulated in the tank (16), which also has its corresponding entry (17) and exit (18). Once liquid, the refrigerant reaches the valve expansion (14). The expansion that takes place in the valve makes the fluid begins to evaporate in the evaporator panel (1) where it has of capturing the heat necessary to evaporate. The fluid enters in the evaporator through the inlet connection (4) of the panel roll-bond, until reaching the exit (5), which goes attached to the inlet (10) of the vacuum tube panel. The exit (11) of the vacuum tube panel is connected to the suction of the compressor. Once the cooling fluid has completely evaporated, close the compression cycle.

Claims (3)

1. Evaporator solar panel with direct expansion and double capture (1), characterized by having means for capturing solar and environmental energy (2), consisting of a metal panel that incorporates a radiation absorbing coating, and containing a circuit (6) for the circulation of refrigerant fluid, which evaporates thanks to the energy captured; also having means for collecting and accumulating solar energy (3), connected in series with the previous means, to favor the evaporation of the fluid in the presence of low temperatures, consisting of a panel that incorporates a circuit (7) for circulation of the cooling fluid, a solar radiation absorbing element, a cover (8) that generates the greenhouse effect inside the panel, and thermal insulation (9) to avoid losses with the environment. 2. Evaporator direct expansion and double collection solar panel, same as claim 1 and characterized in that the solar and environmental energy collection means consist of a first roll-bond type metal panel (2), composed of two electro-welded plates that delimit an inner circuit (6) and whose surface has a coating absorbing solar radiation; and the solar energy collection and accumulation means consist of a second thermal solar panel of heat pipe type vacuum tubes (3), consisting of a series of tubes (8) that capture solar radiation, and transform it into thermal energy in the internal absorber that they incorporate, yielding it to the fluid that circulates through its internal circuit (7), which is covered by insulating material (9). 3. Direct expansion double evaporation solar panel, similar to claim 1 and characterized in that it is part of a heat pump water heating equipment (12), which has a water storage tank (16), a condenser (15) in contact with said water, as well as by a compressor (13), an expansion element (14) and other necessary auxiliary elements, so that the output of the expansion valve is connected to the inlet (4) of the first part of the evaporator panel, the outlet (5) of this first part to the inlet (10) of the second part, and the outlet (11) of this second part to the aspiration of the compressor.