JP2009022123A - Power generation method using heat collection by heat pump - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the following problem associated with conventional power generation devices that use fuel to produce high temperature and high pressure and convert it into electrical energy: when electrical energy is produced, thermal energy is not recovered and a large amount of heat must be discharged to the outside; and also when electrical energy is used, heat is produced and air is warmed by an amount equivalent to the amount of heat produced by using fuel as a whole. <P>SOLUTION: Thermal energy, which is difficult to use at low temperature, is collected to a heat pump so that the thermal energy can be converted into electrical energy and is turned into high-temperature energy to evaporate liquid. Utilizing a theory that gas is liquefied when exposed to low temperature, a flow of gas and a pressure difference are artificially produced. A power generation device is placed in the flow of gas and the pressure difference. The generator 5 is rotated by the flow of air and the pressure difference to convert them into electrical energy. An amount of thermal energy equivalent to an amount reduced as the result of conversion into electrical energy is made up by a heat exchanger 7 for heating. Thermal energy is thereby continuously taken out as electrical energy and provided to the outside. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a power generation method that converts thermal energy existing in nature into kinetic energy and then converts it into electrical energy.

Conventional power generation devices combust fuels such as fossil fuels, evaporate water with the thermal energy generated during combustion, generate high pressure, rotate the generator using the pressure, or connect to an internal combustion engine This is a power generation method in which electric energy is obtained by rotating a generator. Patent documents that convert thermal energy into electrical energy include the following.
Japanese Patent Application 4-124851 JP 02-001989 Japanese Patent Application No. 7-344276

  This has the following drawbacks. It was always difficult to handle fossil fuels and other fuels at high temperatures and high pressures. Moreover, although there is an ocean temperature difference power generation called OTEC, since the temperature difference is small, the efficiency is very bad.

  In order to solve the above drawbacks, the present invention devised to actively convert heat energy into kinetic energy, and collects the heat energy existing everywhere using a heat pump to create a high temperature part and a low temperature part. One end of the sealed container is changed to gas by applying heat to the liquid at the high temperature part 8 and the other end is changed to gas at the low temperature part 9 by removing heat from the gas. Is lowered to facilitate evaporation of the liquid in the high-temperature part 8 container. By collecting heat with a heat pump, a high temperature part and a low temperature part were created, and a gas flow and pressure difference were created between them. Therefore, the heat energy is first converted into kinetic energy, and the kinetic energy is converted into electric energy, so that power can be continuously generated using the gas flow and pressure difference.

Conventional power generation facilities generate electricity in large-scale buildings, but this power generation method can reduce the size of the device, and if it is installed in a car, it can be used as a fuel-free electric vehicle, and when it does not run, it can also sell power Become.
Although the heat energy that was not converted from heat energy to electric energy was thrown away to the outside in the conventional method, the method of the present plan can be recovered in the low temperature part 9 and collected and reused without waste. Can be converted to
Since the vapor condenses in the low temperature section 9 container and the pressure in the container drops, the liquid in the high temperature section 8 container evaporates at a temperature lower than the temperature at 1 atm. .
If there is a temperature of minus 273 ° C. or higher, theoretically any heat source can be used by appropriately changing the liquid, and it can be used in any place such as a remote island or in the mountains, and can be used without the need for transmission line facilities.

Evaporated with the vaporized low-temperature gas that passed through the high-temperature section 8 container and the heat pump expansion valve 12 equipped with the heat exchanger 3 for evaporating the liquid using the high heat source condensed and collected by the compressor 2 of the heat pump. A low-temperature part 9 container equipped with a cooler (condenser) 4 for returning the gas to a liquid is provided. A power generation device is provided between the high-temperature part container and the low-temperature part container to form a closed container. The air in the container is taken out and evacuated, water is added as liquid 1 to one end that becomes the high temperature part 8 in the container, and water is evaporated by the heat exchanger 3 of the compressor 2 of the heat pump. The other end which becomes the low temperature part 9 returns the water evaporated by the cooler (condenser) 4 of the heat pump to a liquid. Between the one end of the high temperature part 8 and the one end of the cooler (condenser) low temperature part 9 in the container where the gas in which the liquid in the container is evaporated is utilized using a high heat source, there is a flow of the evaporated gas and a pressure difference. appear. A power generator is installed between one end of the high temperature part 8 and one end of the low temperature part 9, and the generator 5 is rotated by the flow of the vaporized gas and the pressure difference to generate power. The water returned to the liquid by the cooler (condenser) 4 is sent to the high temperature section 8 container by the return pump 6. The low-temperature gas of the heat pump is low in temperature by the amount of heat energy converted into electric energy, and the insufficient heat energy is replenished through the heat exchanger 7 for heating and is compressed and collected toward the compressor of the heat pump. The compressed and collected heat energy is used to evaporate water again to become kinetic energy, then converted into electrical energy, and the heat energy via water becomes kinetic energy and then becomes electrical energy, one continuous A cycle is constructed.

Although there is COP as a unit representing the heat collection efficiency of the heat pump, it is currently 4 to 6. When the flow of water vapor is regarded as wind, the power generation efficiency of wind power generation is currently said to be 30%. Assuming that COP is 4, it is possible to collect 4 kW of heat with a 1 kW heat pump, and it is calculated that 30% is converted from 4 kW of heat into electric energy. 1 kW × 4 × 0.3 = 1. 2KW can be generated, and 1.2KW-1kW = 0.2KW. Therefore, 1.2 kW of electrical energy can be produced with 1 kW of electrical energy, and 0.2 kW of electrical energy is surplus, and 0.2 kW of electricity can be provided to the outside from this device. The heat energy that has not been converted into electric energy is recovered and reused by the cooler (condenser) 4, and the heat energy radiated from the compressor 2 of the heat pump is also recovered by the heating heat exchanger 7 without waste. This power generation method is considered to have no energy loss. In order to generate electricity using fuel, it is possible to supply heat energy generated from the fuel to the heat exchanger 7 for heating. The power generation efficiency in the case of using fuel is close to 100% because the heat energy that has not been converted into electric energy is recovered by the cooler (condenser) 4.

According to the above feature of the present invention, the heat exchanger 3 evaporates the liquid in the container using the high heat source condensed and collected by the compressor 2 of the heat pump in the high temperature portion 8 in the sealed container in the main body. Is installed, and the cooler 4 with the vaporized low temperature gas passing through the expansion valve of the heat pump that returns the evaporated gas to the liquid in the other low temperature part 9 is installed, and the liquid in the container is evaporated using a high heat source A power generation device is installed between the gas and the cooler 4, the inside of the container is evacuated, and the liquid is inserted into the high temperature portion 8 in the container. When heat energy is applied to the liquid through the heat exchanger 3 of the heat pump, the liquid is vaporized. Since the evaporated gas condenses when cooled, a pressure difference is generated at the boundary of the power generation device, and the generator 5 can be rotated via the fan 13. The water returned to the liquid by the cooler (condenser) 4 is sent to the heat exchanger 3 side by the liquid return pump 6 and evaporated again. The loss of heat energy converted into power generation may be supplemented by absorbing the heat energy through the heat exchanger 7 for heating to the low-temperature gas that has passed through the expansion valve of the heat pump. In order to prevent the temperature of the heat exchanger 3 from rising abnormally, a control unit 10 for controlling the heat exchanger 7 for heating is installed, and in order to prevent the temperature of the cooler 4 from dropping abnormally, the heat pump is compressed. A control unit 11 for controlling the machine 2 is installed.

There is no need to use fuel for creating high temperatures as in the past, and the surrounding heat energy is converted into electrical energy, so no pollution occurs. Since the generated electrical energy finally becomes thermal energy and there is no change in the heat balance, it is possible to repeatedly use the thermal energy as electrical energy.

FIG. 1 is a configuration diagram of a main part of a power generation device using heat collection of a heat pump according to an embodiment of the present invention, and is roughly divided into a heat pump unit, an evaporation unit, and a power generation device unit.

The evaporated water vapor is cooled by the cooler 4, condensed and returned to water, the pressure inside the sealed container is lowered, and the water in the high temperature part 8 is evaporated even when the heat exchanger 3 is 100 ° C. or less. The vaporized water vapor proceeds toward the low temperature part 9 where the cooler 4 having a low pressure is provided. This is where the heat energy has changed to kinetic energy. Water vapor hits the fan or turbine 13 attached to the power generation device to rotate the generator 5 to generate power.

It is a block diagram which shows an example for implementing this invention method. It is a block diagram at the time of using two heat pumps.

Explanation of symbols

1 liquid 2 heat pump compressor 3 heat exchanger 4 cooler (condenser)
5 Generator 6 Liquid return pump 7 Heat exchanger for heating 8 High temperature part 9 Low temperature part 10 Heat collection control unit 11 Cooling control unit 12 Expansion valve 13 Fan turbine

Claims (4)

A high-temperature container equipped with a heat exchanger for evaporating liquid using the high heat source condensed and collected by the compressor of the heat pump and the gas evaporated by the low-temperature gas evaporated through the expansion valve of the heat pump into liquid A low temperature vessel with a condenser (condenser) for return is provided, and a power generation device is provided between the high temperature vessel and the low temperature vessel to form a closed vessel. A pump that fills as much as possible and converts the energy due to the pressure difference that the vaporized gas flows from the high-temperature vessel into the low-temperature vessel into electrical energy with a power generator, and returns the liquid returned to the liquid by the condenser (condenser) to the high-temperature vessel Power generation method using heat collection of heat pump equipped with The power generation method using the heat collection of the heat pump according to claim 1, further comprising a heat exchanger for heating for supplying heat to the low temperature gas for heat pump that has passed through the low temperature portion. 3. A power generation method using heat collection of a heat pump according to claim 1, wherein heat sources collected by using two or more heat pumps are supplied as heat energy to the high temperature container. In order to prevent the temperature of the heat exchanger 3 from rising abnormally, a control unit 10 for controlling the heat exchanger 7 for heating is installed, and in order to prevent the temperature of the cooler 4 from dropping abnormally, the heat pump is compressed. 4. A power generation method using heat collection of a heat pump according to claim 1, wherein a control unit 11 for controlling the machine 2 is installed.

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