SUN ENERGY DEVICE FOR HOT WATER PRODUCTION

Abstract: Under a transparent square (10), a pick-up body in form of copper plates (2, 3, 4), in slanting position, is employed with upward increasing thickness and step conformation of its radiant surface, ending with a linear storage tank (5) having a constant section and a slight upward pent, supporting an output tank (12) on duct terminals. The network water enters the accumulation tank (5), passes upwards through it getting warm into the delivery upper tank (12), and while the use water gets out from a higher duct (11) at the other end, the remaining one gets back through the other duct (13) to the beginning of the accumulation tank (5), rises up since the circulation in the heat exchanger is carried out by the temperature difference and, therefore, by the weight difference in the different parts of the water.

Description: Sun energy device for hot water production. The invention refers to a device apt to produce hot water for different employs consisting of an accumulator of solar ener¬ gy and of a heat exchanger with a flux of na uraal recycle wa- ter combined in only one body and kept in -an insulated conta± ner. A device is known which employs capturing plates in which -an antifreezing liquid passes through a coil with forced circula_ tion. The said liquid then passes through a tank with an insi_ de pre-chamber in which the sanitary water is passing. The li_ quid gets warm by means of the sun irradiation and heats the sanitary water of the pre-chamber, while passing through the said tank, by means of the thermal interexchange. The system, however, has many inconveniences because it requires a device with consistent weight -and size, as well as energy consumption on account of the production of a forced circulation, it under goes the risk of pump breakages or that the feeding current • , '-goes out, .and moreover it requires hight installagion costs in connection with the presence of panels, tanks, masonry work for laying to work, electrical equipment and pump connection. , panel is fitted on the roof, whereas the accumulation tank is ei ther above or below it. -Should the second tank break, furtheπro- re, the anti-freezing liquid gets into cantact with the s-anitary water and defiles it. The said large size devices, moreover, disfigure the aestetics of the roof -and, since forming a natural barrier against the wind, they may fall down causing consistent damage beside being able to draw currents of energy beyond con- trol, such as thunderbolts, owing to their considerable metal mass.There are to be taken into account, moreover, that a slow¬ ness in getting warm can be noted in these devices, what can cau se heavy inconveniences to the user. This because they employ fluid containing anti-freezing substances running in a coil. The fluid density and the presence of a system of elbow ways act in connection with the flux slowing. The invention device proposes a new conception solution which srt- ploys integrated accumulation and water warming sections in only one structure. The said structure c-an be carried out with a mi¬ nimum encumbrance enclosed as a cαπpact mass in a non-conducting container. Consequently, a general simplification of the device is obtained without parts underlying to particular wear. This allows to produce hot water with lower production costs by redu- cing the setting up costs, since no masonry and supporting works are required, with a reduction of the thermal scattering. The invention device does note require maintenance employ of electri cal energy, hydraulic pump or other circulation'accessories and anti-freezing liquid either. In particular, the invention enables the execution of devices with shape and sizes that can be integrat ed with the roof structure, thus avoiding to disfigure the struc¬ ture, to endanger through falls because of the wind and to deter¬ mine metal masses capable of drawing thurderbolts or other. Substantially, the invention employs a catching copper body con- sisting of a plate with thickness increasing upwards determinat ed by the step conformation of irradiating surface which above ends with a linear accumulation tank with a constant section and a slight upwards pent. The said tank supports an output tank on the two conduit bodies mounted on the terminals. The network water enters frαn an axial conduit of- the lower termin¬ al into the accumulation tank, goes through it upwards getting warm and by means of its upper terminal conduit passes into the output tank. The employ water gets out through -an upper conduit of the other end, while the residual one gets again through the other end conduit at the beginning of the accumulation tank and mounts up in it with natural cycle continuity. The said natural circulation in the heat exchanger is assured by the difference of temperature and, therefore, of weight of the water in diffe- rent parts of the exchanger. Since the accumulation tank is pent upwards, the permanence of air bubbles in the heat exchanger is avoided. When going up, the water pushes the network water to¬ wards the output conduit. The step conformation of the catching body enables to increase the accumulation possibility by increas ing the irradiable surface and the water heating speed. This is possible because the absorption degree of the sun radiations is increased on the initial threshold with lower thickness and the accumulation heat is transmitted more quickly to the subsequent section and so on in prosecution to the accumulation tank on which the 1-arger thickness part of the plate lies which ensures a high power in the continuance of the heating effect. The sin¬ gle body unit of the heat accumulator and exchanger is foreseen in only one rigid copper structure in a slating position form the initial threshold upwards .and fitted in an insulated contai ner with the irradiable part below a transparent catching panel. An execution form is illustrated in an indicative way in the drawings of Tables 1 and 2; with reference to these ones, fig. 1 is the length section of the device. Fig. 2 is the front view of -)ϋ only the single body copper unit which acts as an accumulator-he at exchanger. Fig. 3 is the perspective view of the same operat¬ ing assanbly as per the previous figure from the side of input and output water cond'uits. Fig. 4 is the perspective view of the device. ) S The version foresees the plate 1 in copper with threshold 2 with subsequent steps 3 and 4, this last one on tank 5 with section 6 which completes the plate like part. This part lies on insulating base 7 which operates as thermic insulation and leaning base. The ).) containment form -employs case 8 with perimetrical upper borders 9 as seals of the transparent pl-ane 10. Fran the accumulation tank 5, the mounting duct 11 brings hot water to the delivery tank 12. The duct 13 brings back the water frc the delivery tank 12 to tank 5 for the recirculation continuity. The network water enters ' • 5 frcm duct 14 and gets out to be used through duct 15. The contai. ner is completed with the cap cover 16 and parts 17 for fixing on the supporting parts. The heat exchanger of the device can be emptied only by closing :;) the feeding duct and by opening the delivery one when the device is not employed. Thus the anti-freezing liquid -employ is avoid¬ ed. The device is particularly used for getting warm water for hygie .:> nic-sanitary installagions and for heating, as well as for the productive and laboratory activities in general. The execution particulars, sizes and materials of the container, the duct disposition as well as the one of the plate steps and :.) anything else in this connection may be foreseen in different ways.

Claims: Claims. 1) Sun energy device for univers-ality of employ hot water, which employs a catching copper body consisting of a plate (1) with thickness increasing upwards determined by the step conformation 5 tank (5) with a constant section (6) and a slight upwards pent. The said tank supports an output tank (12) on the two conduits bodies mounted on the terminals. The network water enters frcm an axial conduit of the lower terminal into the accumulation tank, goes through it upwards getting warm and by means of its upper ter !0 minal conduit passes into the output tank. The employ water gets out through an upper conduit of the other end, while the residual one gets again through the other end conduit at the beginning of the the accumulation tank and mounts up in it with natural cycle continuity. This said natural circulation in the heat exchanger 15 is assured by the difference of temperature and, therefore, of weight of the water in the different parts of the exchanger. 2) Sun energy device for universality of employ hot water, as to claim 1 , characterised by the fact that since the accumulation J tank is pent upwards, the permanence of air bubbles in the heat exchanger is avoided. When goint up, the water pushes the network water towards the output conduit. 3) Sun energy device for universality of employ hot water, as to . claim 1 , characterised by the fact that the step -conformation of the catching body enables to increase the accumulation possibili ty by increasing the irradiable surface and the water heating speed. This is possible because the absorption degree of the sun ra diations is increased on the initial threshold with lower thick- J ness and the accumulation heat is transmitted more quickly to the subsequent section -and so on in prosecution to the accumulation tank on which the larger thickness of the plate lies which ensures a high power in the continuance of the heating effect. 4) Sun energy device for univers.ality of employ hot water, as to claim 1 , characterised by the fact that the single body unit of the heat accumulator and exchanger is foreseen in only one rigid copper strutture in a slanting position from the initial thre- hold upwards and fitted in an insulated container with the irra¬ diable part below a transparent catching panel. 5) Sun energy device for universality of employ hot water, as to claim 1 , characterized by the fact that the heat exchanger of the device can be emptied only by closing the feeding duct and by opening the delivery one when the device is not aαployed. Thus the anti-freezing liquid employ is avoided.

Inventors: RONCI ROBERTO, WEBER GERHARD, RONCI, ROBERTO, WEBER, GERHARD
Applicants: RONCI ROBERTO, WEBER GERHARD, RONCI, ROBERTO, WEBER, GERHARD
Application year: 1986
Main classification: F24J2
IPC codes: F24J2