RU2006757C1 - Sun-electric hot-water supply unit - Google Patents

Abstract

FIELD: domestic water heating. SUBSTANCE: flow regulator is adjustable throttle 8 arranged in any pipeline beyond storage tank 2. Hot water drain pipe 6 is connected to straight pipeline between header 1 and storage tank 2; flexible end of pipeline 3 secure on float 7 abuts its lower surface. Flow regulator can be placed on straight pipeline 3 between hot water drain pipe 6 and storage tank 2. EFFECT: improved design. 2 cl, 1 dwg

Description

 The invention relates to solar technology and may find application in creating installations for heating water in a domestic environment.

 The simplest designs of solar plants are known, in which water is circulated due to the thermosiphon effect, containing two main nodes: a solar collector and a storage tank connected by pipelines [1 and 2].

These installations have the following disadvantages:
limited energy intensity, determined by the height of the layer h or the distance from the level aa to the hot water drain tap [1];
the use of a large number of pipelines [2];
plant inoperability at high intensity of solar radiation [1].

 Known solar installation [3], containing a solar collector, storage tank, direct and return pipelines, a pipe for draining hot water, a float and a flow regulator. The storage tank is located above the collector and communicated with it through a direct pipe supplying water from the collector to the tank, and a return pipe supplying water from the tank to the collector. A float is placed in the tank, to which the end of the flexible section of the straight pipe is attached, on which a flow regulator is installed, made in the form of a tip with a calibrated hole. A second flexible conduit in communication with the hot water outlet is adjacent to the bottom surface of the float.

In this installation, in comparison with analogues
increased energy intensity, since it is technically feasible to heat the entire amount of water in the tank with its further selection;
reduced number of pipelines;
the operation of the installation is ensured at any intensity of solar radiation;
the thickness of the layer of water undergoing primary heating is reduced.

However, the installation has the following disadvantages:
it takes a long time to get hot water, because this requires heating the water layer in the storage tank with a thickness of h;
significant difficulty in regulating the water temperature, as well as setting the unit to the required operating mode (for example, the highest heat removal from the collector). In this case, regulation can be carried out by replacing one tip with a calibrated hole with another, fixed at the same end of the direct pipeline;
rather complicated design;
increased heat loss due to the presence of three inlet pipelines in the storage tank.

 The aim of the invention is to improve the operational characteristics of the installation by simplifying maintenance, reducing the time for receiving hot water, reducing heat loss while simplifying the design.

 This goal is achieved by the fact that in a solar installation containing a solar collector, storage tank, direct and return pipelines, a float, a hot water drain pipe and a flow regulator, the latter is made in the form of an adjustable choke and installed in any of the pipelines outside the tank, a hot drain pipe water is connected to a direct pipeline between the collector and the tank, and the flexible end of the direct pipe, mounted on the float, is adjacent to the bottom surface of the float. An adjustable throttle can be placed on a straight pipe between the hot water drain pipe and the tank.

 The presence of signs that distinguish the claimed technical solution from the prototype, indicates that it meets the criterion of "novelty."

 From the sources of patent and technical literature, no technical solutions have been identified that are characterized by the claimed distinctive features, therefore, the proposed technical solution meets the criterion of "significant differences".

 The drawing shows a solar installation diagram.

 The solar installation contains a solar collector 1, a storage tank 2 located above it, a direct pipeline 3, a flexible section 4 of which is located in the storage tank 2, and a return pipe 5 that feeds the ox from the storage tank 2 to the collector 1. A pipe 6 for draining hot water connected to the direct pipe 3 in the area between the solar collector 1 and the storage tank 2. The last one has a float 7, the end of the flexible section 4 of the straight pipe 3 is adjacent to the bottom surface of the float 7. The end of the flexible section is at the point where it is attached to oplavku 7 may be arranged tangentially to the surface of the float, perpendicularly to this surface or at an angle as shown in the drawing. A screen can be applied that facilitates a smoother spreading of hot water under the surface of the float 7. One of the pipelines (for example, in the return pipe 5) includes a flow regulator made in the form of a throttle 8 with a variable flow area. As such a throttle, a conventional valve can be used. The flow regulator can be included in the pipeline 3 in the area between the pipe 6 and the storage tank 2. The cold water is supplied through the pipe 9.

 The surface of the storage tank 2, pipelines 3 and 5, the pipe 6 for the selection of hot water, the reverse surface of the solar collector 1, can be insulated.

 Solar installation works as follows.

 As the storage tank 2 is filled with water through the pipe 9, the float 7 pops up and lifts the end of the flexible section 4 of the direct pipeline 3 attached to its lower surface. At the same time, the water fills all the pipelines and the solar collector 1.

 Under the influence of sunlight, the water heated in the collector 1 rises through the pipeline 3 and flows under the lower surface of the float 7, and cold water from the bottom of the storage tank 2 through the return pipe 5 enters the solar collector 1. To ensure the highest temperature coming from the collector 1, hot water adjustment of the regulator. To do this, change its cross-section until the required water temperature is provided at the outlet of the collector 1. This adjustment compensates for the influence of the installation dimensions of the installation, as well as its current technical condition. Since the hot water entering the storage tank 2 flows directly below the surface of the float 7, the incoming hot water is minimally mixed with the cold water contained in the storage tank 2 and, therefore, the minimum time is required before the hot water production unit starts operation. This does not prevent the heating of all water in the storage tank 2, since the height of the hot water layer gradually increases and water is taken from the storage tank 2, which has a maximum temperature.

 Reducing the time of receipt of hot water is the placement of the pipe 6 drain hot water in the area between the solar collector 1 and the storage tank 2 (in the immediate vicinity of the collector). Obviously, this placement of the pipe 6 provides the selection of the first portions of hot water. With the branch pipe 6 open, hot water flows to the drain both from the solar collector 1 and from the top layer in the storage tank 2 through the pipe 3. Placing a flow regulator in the area between the hot water drain pipe 6 and the storage tank 2 compared to the placement of the controller in another place of pipelines 5 or 3, it provides different proportions of hot water supplied to the drain from the solar collector 1 and the storage tank 2.

The proposed installation in comparison with the prototype is characterized by the following technical and economic advantages:
reduction of time before the start of operation of the installation: obtaining the first portions of hot water due to the proposed placement of the pipe for the selection of hot water;
increase in water temperature in the selected layer due to the fact that the end of the direct pipeline is adjacent to the bottom surface of the float;
ensuring the regulation of water temperature due to the implementation of the flow controller in the form of an adjustable throttle and its placement outside the tank;
simplification of the design and reduction of heat loss by reducing the number of pipelines in the storage tank.

 Economic advantages are a consequence of the technical and are to reduce the complexity of manufacturing due to the simplification of the design. (56) 1. USSR Copyright Certificate N 830084, cl. F 24 J 2/42, 1980.

 2. USSR author's certificate N 1499078, cl. F 24 J 2/42, 1989.

 3. Copyright certificate of the USSR N 1054632, cl. F 24 J 2/42, 1983.

Claims (2)

 1. HOT WATER SUPPLY HELIOSTATION, containing a solar collector, an accumulator tank located above it, a direct pipeline supplying water from the collector to the tank, a return pipe that discharges water from the tank to the collector, a float located in the tank, a hot water discharge pipe and a flow regulator moreover, at least a portion of the direct pipeline is flexible and its end is attached to the float, characterized in that the flow regulator is made in the form of an adjustable throttle and is installed in any of the pipelines outside the tank, a pipe with willow hot water is connected directly to the conduit between the manifold and the tank, and the end of a straight pipe mounted on the float is adjacent the lower surface of the float.  2. Solar installation according to claim 1, characterized in that the adjustable throttle is placed on a straight pipe between the hot water drain pipe and the tank.