JP2018054229A - Small-sized heat merger power generation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized heat merger power generation system capable of providing heating water of heat medium to a heat supply destination through utilization of a heat merger power generator and a boiler.SOLUTION: This invention relates to a small-sized heat merger power generation system of which structure is made simple due to the fact that heat medium of which temperature is increased up to a predetermined temperature by waste heat of the heat merger power generator is flowed into a heat exchanger installed inside a boiler so as to cause a heat exchanging operation to be carried out by combustion heat of a burner, resulting in that energy required for combustion at the burner is decreased and a reduction in heat efficiency of the heat medium is prevented and an additional heat exchanger is not installed inside the heat merger power generator.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a compact combined heat and power generation system capable of providing heating water as a heat medium to a heating supply destination using a combined heat generator and a boiler.

  In general, combined heat & power (CHP) is a process that converts chemical energy contained in fuel into electrical energy by various prime movers such as internal combustion engines, gas turbines, fuel cells, and Stirling engines. It is a comprehensive energy system that effectively uses waste heat.

  Such a power generation method is a high-efficiency energy technology that can improve the efficiency of energy use more than twice that of the existing power generation method, and at the same time, the amount of CO emissions that contributes most to global warming. Because it is a pro-environmental technology that can dramatically reduce energy consumption, we are actively promoting its introduction in each country.

  As one of such combined heat and power generation systems, Korean Patent No. 713620 is proposed.

  FIG. 1 is a configuration diagram schematically showing a conventional combined heat generation and individual heating integrated system, which is disclosed in Korean Patent No. 10-2011-36285 (April 7, 2011).

  The conventional heat combined power generation and individual heating integrated system can use the heat recovered by the heat combined power generator for both heating and hot water by connecting the heat medium flow path of the heat combined power generator and the boiler, The purpose is to provide a compact combined heat and power generation system that can simplify the system and reduce the installation cost, and can easily control the amount of heat supplied in the heating and hot water modes. In order to recover the waste heat generated during power generation, the combined heat generator 100 having the heat exchanger 110 and the heat medium that has absorbed the heat in the heat exchanger 110 are directly connected to the heating destination and the hot water supply. A boiler 200 that selectively circulates in any one of the hot water supply heat exchangers 230 that exchange heat with water, the circulating heat medium is stored, and the stored heat medium is used as the combined heat generator. 100 heat Composed of linked heat medium storage tank 300. As fed to exchanger 110.

  However, such a conventional combined heat and power generation system uses a main heat exchanger at the same time in addition to a heat exchanger for recovering waste heat from the combined heat generator during heating. In addition, there is a problem that the overall structure is complicated.

  The present invention has been proposed in order to solve the above-mentioned problems, and while simplifying the number of heat exchangers necessary for heat exchange of the heat medium to promote structural simplification of the heat merge system, It is an object to provide a heat merge system that can increase thermal efficiency.

  In order to solve the technical problems described above, a small-sized combined heat and power generation system for heating according to the present invention includes a heat storage soda that stores heating water that is a heat medium necessary for heating at a heating supply destination, and pipe connection with the heat storage And a heat combined generator provided so that the heat medium used for heating of the heating supply destination can be heated by waste heat generated when producing electricity, one end of which is connected to the heat combined generator, The end is connected to the regenerator so that the heat medium can be circulated by a circulation motor, and the heat medium heated by the waste heat of the combined heat generator flows into the heat exchanger and is heated by the combustion heat of the burner. And a boiler provided so that the heat medium subjected to heat exchange by the heat exchanger can be re-supplied to the heat storage soda.

  The regenerator may further include a temperature sensor electrically measuring a temperature of the stored heat medium and electrically connected to a control panel for controlling the boiler, and the control panel may be a temperature sensed by the temperature sensor. It is preferable to maintain a constant temperature of the heat medium stored in the heat storage soda by operating at least one of the boiler and the combined heat generator when the temperature is equal to or lower than a set temperature.

  In addition, the boiler passes through the combined heat generator, one end is connected to the heat storage soda and the other side is connected to one side of the heat exchanger via a heating supply pipe of the boiler. A first line and a second line that is pipe-connected to the other side of the heat exchanger and is pipe-connected to the heat storage soda via a heating return pipe of the boiler, the first line and the second line It is preferable that a heat medium circulated by the circulation motor is movably provided in the interior.

  According to the present invention, a heat medium whose predetermined temperature has been raised directly by the waste heat of the combined heat generator in a direct heating manner is introduced into the heat exchanger provided in the boiler, and the combustion heat of the burner is differentiated. As a result of the heat exchange being performed, the energy required for combustion of the burner is reduced, and the heat efficiency of the heat medium is prevented from being reduced.

  Moreover, since a separate heat exchanger is not provided inside the heat combined generator, which is different from the conventional one, there is an effect that the structure can be simplified.

It is the conceptual diagram which showed the conventional heat combined power generation system. It is the conceptual diagram which showed the small heat combined power generation system by this invention. It is the conceptual diagram which showed the aspect which a heat carrier moves through the small heat combined power generation system by this invention.

  Hereinafter, a heating-only small combined heat and power generation system (hereinafter referred to as “heat combined power generation system”) according to the present invention will be described in detail with reference to the accompanying drawings.

  First, as shown in FIG. 2, the combined heat and power generation system 100 according to the present invention is mainly composed of a heat storage soda 110, a combined heat generator 120, and a boiler 130.

  More specifically, the regenerator 110 is formed in a tank type capable of storing a certain amount of heat medium, which is heating water, and an outer surface on one side is used for heating the combined heat generator 120 and the boiler 130. A pipe is connected to the return water pipe 131 and the other outer surface is pipe-connected so that the stored heat medium circulates through the heating supply destination 140 and is used for heating.

  In addition, the heating return water pipe 131 is connected to one side upper part of the regenerator 110, and the heat combined generator 120 is connected to the lower part of one side of the regenerator 110, and the heat medium after circulating through the heating supply 140 is heated. It can be easily supplied to the combined generator 120.

  Further, the heat storage soda 110 further includes a temperature sensor 111 capable of measuring the temperature of the stored heat medium, and the temperature sensor 111 is electrically connected to a control panel (not shown) of the boiler 130, The temperature of the heat medium stored through the control panel can be kept constant.

  For example, when the set temperature of the heat medium (heating water) stored in the heat storage soda 110 via the control panel is set to 60 ° C., the temperature sensor 111 sets the heat medium stored in the heat storage soda 110 below the set temperature. If the temperature decreases, the detected temperature is transmitted to the control panel, and the control panel operates the burner 137 of the boiler 130 or at least one of the combined heat generator 120 that produces electricity. The temperature of the heat medium stored in the heat storage soda 110 can be maintained constant.

  Although not shown, the control panel operates the boiler 130 or the combined heat generator 120 depending on whether or not the electricity produced through the combined heat generator 120 is satisfied, and the heat stored in the heat storage soda 110. The temperature of the medium can be raised.

  The heat combined generator 120 uses a small heat combined generator that generates waste heat when generating normal electricity, and is connected to the heating storage pipe 110 and the heating supply pipe 133 of the boiler 130. The line L1 is provided to be formed.

  At this time, the first line L1 is introduced so as to be close to the gas engine or the like of the combined heat generator 120, and the waste heat of the combined heat generator 120 heats the heat medium by direct heating of the first line L1. It is preferable to be provided.

  The boiler 130 circulates the burner 137 that heats the supplied gas, the heat exchanger 135 that heat-exchanges the heat medium via the combustion heat of the burner 137, and the heat medium that has undergone heat exchange. The boiler 130 includes a circulation pump 139, the heating supply pipe 133 of the boiler 130 is provided with a first line L1 connected to the combined heat generator 120, and the heating return water pipe 131 is connected to the heat accumulator 110. A second line L2 connected to the pipe is provided.

  The heat exchanger 135 is provided so that one side is connected to the first line L1 and the other side is connected to the second line L2, and the heat medium subjected to heat exchange is supplied by the circulation pump 139 to the heat storage soda. 110 to be stored.

  As described above, in the combined heat and power generation system according to the present invention, as shown in FIG. 3, the heat medium (heating water) stored in the regenerator 110 by the rotation of the circulation pump 139 is heated along the first line L1. The heat medium flowing into the combined generator 120 is heated in the first line L1 directly by the waste heat generated during the production of electricity. Will come to be.

  The heat medium heated by the combined heat generator 120 flows into the heat exchanger 135 inside the boiler 130 via the heating supply pipe 133 of the boiler 130, and the heat medium flowing into the heat exchanger 135 is burner. The heat exchange is performed again by the combustion heat of 137.

  At this time, since the heat medium has already been heated to a predetermined temperature and has flowed into the heat exchanger 135, the heat exchange time due to the combustion heat of the burner 137 is shortened, thereby The need for energy is reduced, and it becomes possible to obtain heating water with high energy efficiency but low energy loss.

  The heat medium subjected to heat exchange with the combustion heat through the heat exchanger 135 is stored in the heat storage soda 110 again through the second line L2 connected to the heating return water pipe 131 and stored. The heat medium circulates in the heating supply destination 140 and is used for heating, and is then stored in the heat storage soda 110.

  In the combined heat and power generation system according to the present invention having such a configuration, the boiler 130 is provided with a heat medium whose predetermined temperature is increased directly by the waste heat of the combined heat and power generator 120 in a direct heating manner. By flowing into the heat exchanger 135 and performing heat exchange by the combustion heat of the burner 137, the energy required for the combustion of the burner 137 is reduced, so that the heat efficiency of the heat medium is prevented from being reduced. Become.

  In addition, since a separate heat exchanger is not provided in the heat combined generator 120, which is different from the conventional one, there is an effect that the structure can be simplified.

  The specific embodiments of the present invention have been described in detail above. However, the spirit and scope of the present invention are not limited to such specific embodiments, and various modifications and variations can be made without departing from the scope of the present invention. Anyone with ordinary knowledge should understand.

  Accordingly, the embodiments described above are provided in order to fully inform those skilled in the art to which the present invention pertains the scope of the invention, and are therefore exemplary in all aspects. It should be understood that this is not limiting and the invention is only defined by the scope of the claims.

100 small combined heat power generation system 110 according to the present invention 110 heat storage soda 111 temperature sensor 120 combined heat generator 130 boiler 131 heating return pipe 133 heating supply pipe 135 heat exchanger 137 burner 139 circulation pump 140 heating supply destination L1 first line L2 second line

Claims (3)

A heat storage soda (110) in which heating water, which is a heat medium necessary for heating the heating supply destination (140), is stored;
Combined heat generator (110) connected to the heat storage soda (110) and provided so that the heat medium used for heating the heating supply destination (140) is heated by waste heat generated when producing electricity. 120),
One end is pipe-connected to the heat combined generator (120), the other end is pipe-connected to the heat storage soda (110), and a heat pump can be circulated by a circulation pump (139). The heat medium directly heated by the waste heat of the generator (120) flows into the heat exchanger (135) and heat exchange is performed by the combustion heat of the burner (137), and the heat exchanger (135) A boiler (130) provided so that a heat medium subjected to heat exchange can be re-supplied to the regenerator (110);
A small combined heat and power generation system for heating. The thermal storage soda (110) further includes a temperature sensor (111) electrically connected to a control panel for measuring the temperature of the stored heat medium and controlling the boiler (130),
The control panel operates at least one of the boiler (130) and the combined heat generator (120) when the temperature detected by the temperature sensor (111) is equal to or lower than a set temperature. The heating-only small combined heat and power generation system according to claim 1, wherein the temperature of the heat medium stored in the heat storage soda (110) is kept constant. The boiler (130)
It passes through the combined heat generator (120), one end is connected to the regenerator (110) and the other end is connected to the heat exchanger (135) via a heating supply pipe (133) of the boiler (130). A first line (L1) pipe-connected to one side of
A second line (L2) piped to the other side of the heat exchanger (135) and piped to the heat storage soda (110) via a heating return pipe (131) of the boiler (130); Including
The heating-only small size according to claim 1, wherein a heat medium circulated by a circulation pump (139) is movably provided in the first line (L1) and the second line (L2). Heat combined power generation system.