KR20130009268A - Power generation system of organic rankine cycle using exhaust heat of fuel cell - Google Patents

Abstract

PURPOSE: An organic rankine cycle power generation system using a fuel cell is provided to prevent safety accidents and damage to members for power operations, and to reduce power consumption by recovering electricity. CONSTITUTION: An organic rankine cycle power generation system(100) using a fuel cell comprises a fuel cell unit(102), an evaporator(104), a turbine(106), an electricity generating unit(108), a first electricity converter(122), a power supply unit(124), a power regeneration unit(120), a condenser(110), an engine chiller(112), a storage tank(114), and a pump(118). The first electricity converter is connected to the power supply unit, and converts electricity from the electricity generating unit into the power at a constant level. The power supply unit is connected to the first electricity converter, and supplied with the converted power at the constant level. The power regeneration unit is placed at the rear end of the turbine, and stores liquid from the evaporator in the fuel cell unit by pre-heating the liquid. The engine chiller provides a catalyst to the condenser, and continuously cools condensed liquid by recovering the catalyst from the condenser. [Reference numerals] (102) Fuel cell unit; (104) Evaporator; (106) Turbine; (108) Electricity generating unit; (110) Condenser; (112) Engine chiller; (114) Storage tank; (118) Pump; (120) Power regeneration unit; (122) First electricity converter; (124) Power supply unit; (AA) Coolant

Description

Power generation system of organic rankine cycle using exhaust heat of fuel cell

The present invention relates to an organic Rankine cycle power generation system using a fuel cell.

In general, ORC (Organic Rankine Cycle) power generation system is a Rankin Cycle using an organic medium as a working fluid to recover the heat source in a relatively low temperature range (60 ~ 200 ℃) to produce electricity. It is a system.

In recent years, there has been a continuing research on improved organic Rankine cycle power generation systems that can reduce heat source waste by reducing heat sources, curb rising power generation costs, and prevent worker accidents and damage to power generation operating materials. have.

In addition, research on an improved organic Rankine cycle power generation system that can be used in a short time when low temperature and cold heat is required, and can shorten the preparation time for charging an external device while reducing power waste has been conducted.

In addition, research on an improved organic Rankine cycle power generation system that can reduce power waste and efficiently supply power to internally provided loads for each building, and reduce power waste by recovering the available power from the power supply station, is ongoing. Has been done.

An object of the present invention is to provide an organic Rankine cycle power generation system using a fuel cell that can reduce heat source waste by recycling the heat source generated in the fuel cell and the heat source generated in the power reproduction unit.

Another object of the present invention is to provide an organic Rankine cycle power generation system using a fuel cell that can recover power from a power supply station and can reduce its own power waste.

Still another object of the present invention is to provide an organic Rankine cycle power generation system using a fuel cell which can prevent a worker's safety accident and damage to power generation operating materials due to leakage of a working fluid.

It is still another object of the present invention to provide an organic Rankine cycle power generation system using a fuel cell that can be used in a short time when low temperature and cold heat are required.

Still another object of the present invention is to provide an organic Rankine cycle power generation system using a fuel cell, which can reduce power waste and shorten a preparation time for charging an external device.

Still another object of the present invention is to provide an organic Rankine cycle power generation system using a fuel cell which can efficiently supply electric power to a load provided inside each building while reducing power waste.

In order to achieve the above object, the present invention provides a fuel cell unit for preheating a working fluid corresponding to an organic medium using a heat source generated from a fuel cell, and a liquid preheated to a temperature range of a reference level among the working fluids supplied through the fuel cell unit. Evaporator to receive the gas vaporized into gas, the gas supplied through the evaporator is circulated again in the direction of the preheater, the turbine receives the gas is converted into mechanical energy to drive, the power production unit to generate power by driving the turbine, electric power A first power converter connected to the production unit to convert the power generated by the power generation unit into a constant level of power, a power supply station connected to the first power converter and receiving power converted to a constant level through the first power converter , Placed at the rear end of the turbine, preheated to the temperature range of the reference level in the working fluid in the evaporator Power regeneration unit that receives the unreceived liquid and preheats the liquid to the fuel cell unit, a condenser that condenses the gas supplied through the power regeneration unit from the turbine into a liquid state, provides a refrigerant to the condenser and recovers the refrigerant from the condenser. An engine cooler for continuously cooling the superheated liquid condensed by the pump, a storage tank for storing the condensed cooling liquid supplied through the condenser, and a pump for pumping the condensed cooling liquid stored in the storage tank to the evaporator.

The evaporator may also be provided to detect whether the liquid preheated to the temperature range of the reference level leaks, and to shut down the system when the liquid preheated to the temperature range of the reference level leaks.

The evaporator may also include a water level sensor for the evaporator that measures the level of the liquid preheated to the temperature range of the reference level to detect whether the liquid preheated to the temperature range of the reference level is leaked.

In addition, the storage tank may be provided to detect whether the condensed cooling liquid is leaking and may include shutting down the system when the condensed cooling liquid is leaked.

The storage tank may also include a water level sensor for the storage tank that measures the level of the condensed cooling liquid to detect if the condensed cooling liquid leaks.

In addition, when the liquid preheated through the evaporator is leaked in connection with the evaporator leaks or the cooling liquid condensed through the storage tank leaks, it may further include an identification unit for identifying the current situation.

The apparatus may further include a maintenance center to identify the current situation by performing wireless communication with the identification unit and cope with the current situation.

The identification unit may include at least one of a digital display means, an LED display means, and an alarm means.

The apparatus may further include a cold heat production unit configured to produce cold heat by using a pressure of the superheated gas supplied through the turbine and a refrigeration cycle process.

In addition, the cold heat production unit is connected to the turbine to increase the pressure of the superheated gas to facilitate the condensation of the superheated gas supplied through the turbine and the condensation conditions and expansion of the superheated gas supplied at a constant pressure level through the compressor It may include a refrigeration cycle providing unit for producing cold heat by sequentially repeating the refrigeration cycle process until the conditions and evaporation conditions.

The apparatus may further include a power collector connected to the power generator to collect power generated through the power generator, and a second power converter connected to the power collector to convert the power collected through the power collector into a predetermined level of power. The apparatus may further include an external device connected to the second power converter and selectively charged with power converted to a predetermined level through the second power converter.

The apparatus may further include a third power converter connected to the power generation unit and converting the power produced by the power generation unit into a constant level of power. The third power converter may be connected to the third power converter and converted to a constant level through the third power converter. It may further include a load provided inside each building to receive power.

According to the organic Rankine cycle power generation system using the fuel cell of the present invention made as described above, the following effects can be obtained.

First, by recycling the heat source generated from the fuel cell and the heat source generated from the power reproduction unit, it is possible to reduce the waste of the heat source to improve the efficiency of the system.

Second, there is another effect that can suppress the increase in power generation operating costs due to the loss of the working fluid.

Third, there is another effect that can suppress the increase in power generation operating costs due to the loss of the working fluid.

Fourth, there is another effect that can prevent the operator's safety accidents and damage to the power generation operating materials due to the leakage of the working fluid.

Fifth, there is another effect that can reduce the time to prepare for charging external devices while reducing power waste.

Sixth, there is another effect that can efficiently supply power to the load provided inside each building while reducing power waste.

Seventh, the power can be recovered from the power supply station has another effect of reducing its own power waste.

1 is a block diagram showing an organic Rankine cycle power generation system using a fuel cell according to a first embodiment of the present invention.
Figure 2 is a block diagram showing an organic Rankine cycle power generation system using a fuel cell according to a second embodiment of the present invention.
Figure 3 is a block diagram showing an organic Rankine cycle power generation system using a fuel cell according to a third embodiment of the present invention.
Figure 4 is a block diagram showing an organic Rankine cycle power generation system using a fuel cell according to a fourth embodiment of the present invention.
5 is a block diagram illustrating an organic Rankine cycle power generation system using a fuel cell according to a fifth embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

≪ Embodiment 1 >

1 is a block diagram showing an organic Rankine cycle power generation system using a fuel cell according to a first embodiment of the present invention.

1, an organic Rankine cycle power generation system 100 using a fuel cell according to a first embodiment of the present invention includes a fuel cell unit 102, an evaporator 104, a turbine 106, and a power generation unit 108. , A first power converter 122, a power supply 124, a power regenerator 120, a condenser 110, an engine cooler 112, a storage tank 114, and a pump 118.

The fuel cell unit 102 preheats the working fluid corresponding to the organic medium by using a heat source generated from the fuel cell. That is, the heat source of the fuel cell may be recycled to preheat the working fluid corresponding to the organic medium.

The evaporator 104 receives a liquid preheated to a temperature range of a reference level among working fluids supplied through the fuel cell unit 102 and vaporizes it into a gas.

Here, the evaporator 104 may be provided to detect whether the liquid preheated to the temperature range of the reference level leaks, and to shut down the system when the liquid preheated to the temperature range of the reference level leaks.

At this time, the evaporator 104 may be provided including a water level sensor (not shown) for the evaporator to measure the level of the liquid preheated to the temperature range of the reference level to detect whether the liquid preheated to the temperature range of the reference level. have.

That is, the water level sensor (not shown) for the evaporator detects when the liquid preheated to the temperature range of the reference level leaks out when the liquid level preheated to the temperature range of the reference level decreases to be lower than the level of the reference level. It can be provided to bring the system down.

The turbine 106 is provided to circulate the gas supplied through the evaporator 104 in the direction of the fuel cell unit 102, to receive the gas, and to convert the gas into mechanical energy.

The electric power generating unit 108 is provided to produce electric power by driving the turbine 106, and the condenser 110 condenses the gas supplied from the turbine 106 via the electric power reproducing unit 120, which will be described later, into a liquid state. Is provided.

The first power converter 111 is provided to be connected to the power generator 108 to convert the power produced by the power generator 108 into a constant level of power.

The power supply 113 is connected to the first power converter 111 and is provided to receive power converted to a constant level through the first power converter 111.

The power reproduction unit 120 is disposed at the rear end of the turbine 106 to receive the liquid that is not preheated in the temperature range of the reference level in the working fluid in the evaporator to preheat the liquid and provide it to the fuel cell unit 102. Here, the liquid that is not preheated to the temperature range of the reference level is preheated by using heat generated by the power reproduction unit 120 disposed at the rear end of the turbine 106. In this way, by reusing the heat source of the power reproduction unit 120, it is possible to improve the efficiency of the heat source.

The engine cooler 112 provides a coolant to the condenser 110 and recovers the coolant from the condenser 110 to continuously cool the superheated liquid condensed by the condenser 110.

The storage tank 114 is provided to store the condensed cooling liquid supplied through the condenser 110.

Here, the storage tank 114 may be provided to detect whether the condensed cooling liquid leaks and to shut down the system when the condensed cooling liquid leaks.

At this time, the storage tank 114 may be provided with a water level sensor (not shown) for the storage tank for measuring the level of the condensed cooling liquid to detect whether the condensed cooling liquid leaks.

That is, the water level sensor (not shown) for the storage tank may be provided to detect when the condensed cooling liquid leaks out, to detect when the level of the condensed cooling liquid is reduced to be lower than the level of the reference level, and to shut down the system. There is a number.

The pump 118 pumps the condensed cooling liquid stored in the storage tank 114 to the evaporator 104.

The organic Rankine cycle power generation system 100 using the fuel cell according to the first embodiment of the present invention may improve the efficiency of the heat source by recycling the heat source generated in the fuel cell and the heat source generated in the power reproduction unit 120. Can be.

≪ Embodiment 2 >

2 is a block diagram illustrating an organic Rankine cycle power generation system using a fuel cell according to a second embodiment of the present invention.

2, the organic Rankine cycle power generation system 200 using a fuel cell according to a second embodiment of the present invention includes a fuel cell unit 202, an evaporator 204, an identification unit 205a and 205b, and maintenance. Center 207a, 207b, Turbine 206, Power Generation Unit 208, First Power Converter 222, Power Supply Station 224, Power Regeneration Unit 220, Condenser 210, Engine Cooler 212 Storage tank 214, pump 218.

The fuel cell unit 202 preheats the working fluid corresponding to the organic medium by using a heat source generated from the fuel cell. That is, the heat source of the fuel cell may be recycled to preheat the working fluid corresponding to the organic medium.

The evaporator 204 is supplied with the liquid preheated to the temperature range of the reference level of the working fluid supplied through the fuel cell unit 202 and vaporized into a gas.

Here, the evaporator 204 may be provided to detect whether the liquid preheated to the temperature range of the reference level leaks, and may be provided to shut down the system when the liquid preheated to the temperature range of the reference level leaks.

At this time, the evaporator 204 may be provided with a water level sensor (not shown) for the evaporator to measure the level of the liquid preheated to the temperature range of the reference level to detect whether the liquid preheated to the temperature range of the reference level. have.

That is, the water level sensor (not shown) for the evaporator detects when the liquid preheated to the temperature range of the reference level leaks out when the liquid level preheated to the temperature range of the reference level decreases to be lower than the level of the reference level. It can be provided to bring the system down.

The identification unit 205a is provided in connection with the evaporator 204 to identify the current situation when the liquid preheated through the evaporator 204 leaks.

In this case, the identification unit 205a may be provided including at least one of a digital display means (not shown), an LED display means (not shown), and an alarm means (not shown).

In other words, digital display means (not shown) may be provided to digitally display the preheated liquid amount.

Further, the LED display means (not shown) is provided to emit light with a green light emitting diode (not shown) when the level of the preheated liquid is at the level of the reference level, or when the level of the preheated liquid decreases and becomes lower than the level of the reference level. It may be provided to emit light with a red light emitting diode (not shown).

In addition, an alarm means (not shown) may be provided to sound an alarm when the level of the preheated liquid decreases and falls below the level of the reference level.

At this time, the alarm means (not shown) may be provided to be synchronized with the LED display means (not shown) to emit an alarm sound with the emission of the red light emitting diode (not shown) of the LED display means (not shown).

In addition, the maintenance center 207a may be provided to identify the current situation by performing wireless communication with the identification unit 205a to cope with the current situation.

In this case, the maintenance center 207a may be provided including a monitoring device (not shown) corresponding to the identification unit 205a to synchronize with the identification unit 205a to identify the current situation.

The turbine 206 is provided to circulate gas supplied through the evaporator 204 back in the direction of the evaporator 204 to receive gas and convert the gas into mechanical energy for driving.

The power generation unit 208 is provided to produce power by driving the turbine 206, the condenser 210 to condense the gas supplied from the turbine 206 via the power reproduction unit 220, which will be described later in a liquid state. Is provided.

The first power converter 222 is provided to be connected to the power generator 208 to convert the power produced by the power generator 208 into a constant level of power.

The power supply 224 is connected to the first power converter 222 and is provided to receive power converted to a constant level through the first power converter 222.

The power regeneration unit 220 is disposed at the rear end of the turbine 206 to receive the liquid that is not preheated in the temperature range of the reference level in the working fluid in the evaporator 204 to preheat the liquid and provide it to the fuel cell unit 202. . Here, the liquid that is not preheated to the temperature range of the reference level is preheated using heat generated by the power reproduction unit 220 disposed at the rear end of the turbine 206. As such, by reusing the heat source of the power reproduction unit 220, the efficiency of the heat source can be improved.

The engine cooler 212 is provided to provide refrigerant to the condenser 210 and to recover the refrigerant from the condenser 210 to continuously cool the superheated liquid condensed by the condenser 210.

The storage tank 214 is provided to store the condensed cooling liquid supplied through the condenser 210.

Here, storage tank 214 may be provided to detect whether the condensed cooling liquid is leaking so as to shut down the system when the condensed cooling liquid is leaking.

At this time, the storage tank 214 may include a water level sensor (not shown) for the storage tank for measuring the level of the condensed cooling liquid to detect whether the condensed cooling liquid leaks.

That is, the water level sensor (not shown) for the storage tank may be provided to detect when the condensed cooling liquid leaks out, to detect when the level of the condensed cooling liquid is reduced to be lower than the level of the reference level, and to shut down the system. There is a number.

The identification unit 205b is connected to the storage tank 214 and provided to identify the current situation when the cooling liquid condensed through the storage tank 214 leaks.

In this case, the identification unit 205b may be provided including at least one of digital display means (not shown), LED display means (not shown), and alarm means (not shown).

That is, digital display means (not shown) may be provided to digitally display the amount of condensed cooling liquid.

In addition, the LED display means (not shown) is provided so as to emit light to the green light emitting diode (not shown) when the level of the condensed cooling liquid is at the level of the reference level, or the level of the condensed cooling liquid is reduced so that it is lower than the level of the reference level. It may be provided to emit light with a red light emitting diode (not shown) when lowered.

In addition, an alarm means (not shown) may be provided to sound an alarm when the level of the condensed cooling liquid decreases below the level of the reference level.

At this time, the alarm means (not shown) may be provided to be synchronized with the LED display means (not shown) to emit an alarm sound with the emission of the red light emitting diode (not shown) of the LED display means (not shown).

In addition, the maintenance center 207b may be provided to perform a wireless communication with the identification unit 205b to identify the current situation and cope with the current situation.

At this time, the maintenance center 207b may be provided including a monitoring device (not shown) corresponding to the identification unit 205b to synchronize with the identification unit 205b to identify the current situation.

The pump 218 pumps the condensed cooling liquid stored in the storage tank 214 to the evaporator 204.

The organic Rankine cycle power generation system 200 using the fuel cell according to the second embodiment of the present invention may improve the efficiency of the heat source by recycling the heat source generated in the fuel cell and the heat source generated in the power reproduction unit 120. Can be.

In addition, wireless communication with the identification portions 205a and 205b identifies the preheated liquid leaking from the evaporator 204 and the condensed cooling liquid leaking from the storage tank 214 to facilitate handling of the situation. It is possible to effectively prevent worker accidents and damage to power generation materials due to leakage.

≪ Third Embodiment >

3 is a block diagram illustrating an organic Rankine cycle power generation system using a fuel cell according to a third exemplary embodiment of the present invention.

Referring to FIG. 3, the organic Rankine cycle power generation system 300 using the fuel cell according to the third embodiment of the present invention includes a fuel cell unit 302, an evaporator 304, a turbine 306, and a power generation unit 308. , First power converter 322, power supply 324, power regeneration unit 320, condenser 310, engine cooler 312, cold heat production unit 309, storage tank 314 and pump 318 It includes.

The fuel cell unit 302 preheats the working fluid corresponding to the organic medium by using a heat source generated from the fuel cell. That is, the heat source of the fuel cell may be recycled to preheat the working fluid corresponding to the organic medium.

The evaporator 304 receives a liquid preheated to a temperature range of a reference level among working fluids supplied through the fuel cell unit 302 and vaporizes it into a gas.

Here, the evaporator 304 may be provided to detect whether the liquid preheated to the temperature range of the reference level leaks, and may be provided to shut down the system when the liquid preheated to the temperature range of the reference level leaks.

At this time, the evaporator 304 may be provided including a water level sensor (not shown) for the evaporator to measure the level of the liquid preheated to the temperature range of the reference level to detect whether the liquid preheated to the temperature range of the reference level. have.

That is, the water level sensor (not shown) for the evaporator detects when the liquid preheated to the temperature range of the reference level leaks out when the liquid level preheated to the temperature range of the reference level decreases to be lower than the level of the reference level. It can be provided to bring the system down.

The turbine 306 is provided to circulate the gas supplied through the evaporator 304 in the direction of the fuel cell unit 302 to receive the gas and convert the gas into mechanical energy to drive the gas.

The power generation unit 308 is provided to generate power by driving the turbine 306, the condenser 310 condenses the gas supplied from the turbine 306 via the power reproduction unit 320, which will be described later, into a liquid state. Is provided.

The first power converter 322 is provided to be connected to the power generator 308 to convert the power produced by the power generator 308 into a constant level of power.

The power supply 324 is connected to the first power converter 322 and is provided to receive power converted to a constant level through the first power converter 322.

The power reproduction unit 320 is disposed at the rear end of the turbine 306 to receive the liquid that is not preheated in the temperature range of the reference level in the working fluid in the evaporator to preheat the liquid and provide the fuel cell unit 302. Here, the liquid that is not preheated to the temperature range of the reference level is preheated using heat generated by the power reproduction unit 320 disposed at the rear end of the turbine 306. As such, by reusing the heat source of the power reproduction unit 320, the efficiency of the heat source can be improved.

An engine cooler 312 is provided to provide refrigerant to the condenser 310 and to recover the refrigerant from the condenser 310 to continuously cool the superheated liquid condensed by the condenser 310.

The cold heat production unit 309 is connected to the turbine 306 and provided to produce cold heat using the pressure of the superheated gas supplied through the turbine 306 and the refrigeration cycle process.

In this case, the cold heat production unit 309 may include a compressor 309a and a refrigeration cycle providing unit 309b.

The compressor 309a may be connected to the turbine 306 to increase the pressure of the superheated gas to facilitate condensation of the superheated gas supplied through the turbine 306.

The refrigeration cycle providing unit 309b sequentially generates the refrigeration cycle by repeatedly repeating the refrigeration cycle process until the superheated gas supplied at a constant pressure level through the compressor 309a becomes a condensation condition, an expansion condition, and an evaporation condition. It can be provided to.

The storage tank 314 is provided to store the condensed cooling liquid supplied through the condenser 310.

Here, storage tank 314 may be provided to detect whether the condensed cooling liquid is leaking so as to shut down the system when the condensed cooling liquid leaks.

At this time, the storage tank 314 may include a water level sensor (not shown) for the storage tank for measuring the level of the condensed cooling liquid to detect whether the condensed cooling liquid leaks.

That is, the water level sensor (not shown) for the storage tank may be provided to detect when the condensed cooling liquid leaks out, to detect when the level of the condensed cooling liquid is reduced to be lower than the level of the reference level, and to shut down the system. There is a number.

The pump 318 pumps to supply the condensed cooling liquid stored in the storage tank 314 to the evaporator 304.

The organic Rankine cycle power generation system 300 using the fuel cell according to the third exemplary embodiment of the present invention improves the efficiency of the heat source by recycling the heat source generated from the fuel cell and the heat source generated from the power reproduction unit 120. Can be.

In addition, since the cold heat is produced through the cold heat production unit 309, it can be used in a short time when low temperature cold heat is required.

<Fourth Embodiment>

4 is a block diagram illustrating an organic Rankine cycle power generation system using a fuel cell according to a fourth embodiment of the present invention.

4, the organic Rankine cycle power generation system 400 using a fuel cell according to a fourth embodiment of the present invention includes a fuel cell unit 402, an evaporator 404, a turbine 406, and a power generation unit 408. , First power converter 422, power supply 424, power regenerator 420, condenser 410, engine cooler 412, storage tank 414, pump 418, power collector 411 ), A second power converter 413, and an external device 415.

The fuel cell unit 402 preheats the working fluid corresponding to the organic medium by using a heat source generated from the fuel cell. That is, the heat source of the fuel cell may be recycled to preheat the working fluid corresponding to the organic medium.

The evaporator 404 is supplied with the liquid preheated to the temperature range of the reference level of the working fluid supplied through the fuel cell unit 402 and vaporized into a gas.

Here, the evaporator 404 may be provided to detect whether the liquid preheated to the temperature range of the reference level leaks, and to shut down the system when the liquid preheated to the temperature range of the reference level leaks.

At this time, the evaporator 404 may be provided including a water level sensor (not shown) for the evaporator for measuring the level of the liquid preheated to the temperature range of the reference level to detect whether the liquid preheated to the temperature range of the reference level. have.

That is, the water level sensor (not shown) for the evaporator detects when the liquid preheated to the temperature range of the reference level leaks out when the liquid level preheated to the temperature range of the reference level decreases to be lower than the level of the reference level. It can be provided to bring the system down.

The turbine 406 circulates the gas supplied through the evaporator 404 again in the direction of the fuel cell unit 402, and receives the gas to convert the gas into mechanical energy to drive the gas.

The power generation unit 408 is provided to generate electric power by driving the turbine 406, and the condenser 410 condenses the gas supplied from the turbine 406 via the power reproduction unit 420, which will be described later, into a liquid state. Is provided.

The first power converter 422 is provided to be connected with the power generator 408 to convert the power produced by the power generator 408 into a constant level of power.

The power supply 424 is connected to the first power converter 422 and provided to receive the converted power to a constant level through the first power converter 422.

The power reproduction unit 420 is disposed at the rear end of the turbine 406 to receive the liquid that is not preheated in the temperature range of the reference level in the working fluid in the evaporator 404 to preheat the liquid and provide the fuel cell unit 402. . Here, the liquid that is not preheated to the temperature range of the reference level is preheated using heat generated by the power reproduction unit 420 disposed at the rear end of the turbine 406. As such, by reusing the heat source of the power reproduction unit 420, the efficiency of the heat source can be improved.

Engine cooler 412 is provided to provide refrigerant to condenser 410 and to recover refrigerant from condenser 410 to continuously cool the superheated liquid condensed by condenser 410. Storage tank 414 is condenser It is provided to store the condensed cooling liquid supplied through 410.

Here, storage tank 414 may be provided to detect whether the condensed cooling liquid is leaking so as to shut down the system when the condensed cooling liquid leaks.

At this time, the storage tank 414 may include a water level sensor (not shown) for the storage tank that measures the level of the condensed cooling liquid to detect whether the condensed cooling liquid leaks.

That is, the water level sensor (not shown) for the storage tank may be provided to detect when the condensed cooling liquid leaks out, to detect when the level of the condensed cooling liquid is reduced to be lower than the level of the reference level, and to shut down the system. There is a number.

The pump 418 pumps to supply the condensed cooling liquid stored in the storage tank 414 to the evaporator 404.

The power collector 411 is provided to be connected to the power generator 408 to collect power produced by the power generator 408.

The second power converter 413 is connected to the power collector 411 and provided to convert the power collected by the power collector 411 into a predetermined level of power.

The external device 415 is connected to the second power converter 413 and is provided to selectively charge the power converted to a predetermined level through the second power converter 413.

The organic Rankine cycle power generation system 400 using the fuel cell according to the fourth embodiment of the present invention improves the efficiency of the heat source by recycling the heat source generated from the fuel cell and the heat source generated from the power reproduction unit 420. Can be.

In addition, since the power converted to a constant level supplied through the power collector 411 and the second power converter 413 may be selectively charged with the external device 415, the external device 415 may be reduced while reducing power waste. The preparation time for charging of the battery can be shortened.

<Fifth Embodiment>

5 is a block diagram illustrating an organic Rankine cycle power generation system using a fuel cell according to a fifth embodiment of the present invention.

5, an organic Rankine cycle power generation system 500 using a fuel cell according to a fifth embodiment of the present invention includes a fuel cell unit 502, an evaporator 504, a turbine 506, and a power generation unit 508. , First power converter 522, power supply 524, power regenerator 520, condenser 510, engine cooler 512, storage tank 514, pump 518, third power converter ( 517, a load 519.

The fuel cell unit 502 preheats the working fluid corresponding to the organic medium by using a heat source generated in the fuel cell. That is, the heat source of the fuel cell may be recycled to preheat the working fluid corresponding to the organic medium.

The evaporator 504 receives a liquid preheated to a temperature range of a reference level among the working fluids supplied through the fuel cell unit 502 and vaporizes the gas.

Here, the evaporator 504 may be provided to detect whether the liquid preheated to the temperature range of the reference level leaks, and may be provided to shut down the system when the liquid preheated to the temperature range of the reference level leaks.

At this time, the evaporator 504 may be provided including a water level sensor (not shown) for the evaporator to measure the level of the liquid preheated to the temperature range of the reference level to detect whether the liquid preheated to the temperature range of the reference level. have.

That is, the water level sensor (not shown) for the evaporator detects when the liquid preheated to the temperature range of the reference level leaks out when the liquid level preheated to the temperature range of the reference level decreases to be lower than the level of the reference level. It can be provided to bring the system down.

The turbine 506 is provided to circulate the gas supplied through the evaporator 504 back in the direction of the fuel cell unit 502, to receive the gas, and convert the gas into mechanical energy.

The power generation unit 508 is provided to generate power by driving the turbine 506, and the condenser 510 condenses the gas supplied from the turbine 506 via the power reproduction unit 510, which will be described later, into a liquid state. Is provided.

The first power converter 522 is connected to the power generator 508 and provided to convert the power produced by the power generator 508 into a predetermined level of power.

The power supply 524 is connected to the first power converter 522 and is provided to receive power converted to a constant level through the first power converter 522.

The power reproduction unit 520 is disposed at the rear end of the turbine 506 to receive the liquid which is not preheated in the temperature range of the reference level in the working fluid in the evaporator 504 to preheat the liquid and provide the fuel cell unit 502. . Here, the liquid that is not preheated to the temperature range of the reference level is preheated using heat generated by the power reproduction unit 520 disposed at the rear end of the turbine 506. As such, by reusing the heat source of the power reproduction unit 520, the efficiency of the heat source can be improved.

The engine cooler 512 is provided to provide refrigerant to the condenser 510 and to recover the refrigerant from the condenser 510 to continuously cool the superheated liquid condensed by the condenser 510.

The storage tank 514 is provided to store the condensed cooling liquid supplied through the condenser 510.

Here, storage tank 514 may be provided to detect whether the condensed cooling liquid is leaking so as to shut down the system when the condensed cooling liquid leaks.

At this time, the storage tank 514 may be provided including a water level sensor (not shown) for the storage tank for measuring the level of the condensed cooling liquid to detect whether the condensed cooling liquid leaks.

That is, the water level sensor (not shown) for the storage tank may be provided to detect when the condensed cooling liquid leaks out, to detect when the level of the condensed cooling liquid is reduced to be lower than the level of the reference level, and to shut down the system. There is a number.

The pump 518 pumps the condensed cooling liquid stored in the storage tank 514 to the evaporator 504.

The third power converter 517 is connected with the power generator 508 and provided to convert the power produced by the power generator 508 into a constant level of power.

The loads 519: 519a and 519b are provided internally by buildings (not shown) to be connected to the third power converter 517 and to receive power converted to a predetermined level through the third power converter 517. do.

The organic Rankine cycle power generation system 500 using the fuel cell according to the fifth embodiment of the present invention may improve the efficiency of the heat source by recycling the heat source generated from the fuel cell and the heat source generated from the power reproduction unit 520. Can be.

In addition, since the power converted to a predetermined level supplied through the third power converter 517 may be provided to the load 519 provided inside each building, the load 519 provided inside each building may be reduced while reducing power waste. Power can be supplied efficiently.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

Claims (12)

A fuel cell unit which preheats a working fluid corresponding to an organic medium by using heat generated from the fuel cell;
An evaporator that receives a liquid preheated to a temperature range of a reference level among the working fluids supplied through the fuel cell unit and vaporizes it into a gas;
A turbine which receives the gas and converts it into mechanical energy while circulating the gas supplied through the evaporator in the direction of the preheater;
A power generation unit for producing electric power by driving the turbine;
A first power converter connected to the power generation unit to convert power generated by the power generation unit into a predetermined level of power;
A power supply connected to the first power converter and receiving power converted to a predetermined level through the first power converter;
A power reproduction unit disposed at a rear end of the turbine to receive the liquid, which is not preheated in a temperature range of a reference level in the working fluid, in the evaporator to preheat the liquid to provide the fuel cell unit;
A condenser for condensing the gas supplied from the turbine via the power reproduction unit into a liquid state;
An engine cooler providing coolant to the condenser and recovering the coolant from the condenser to continuously cool the superheated liquid condensed by the condenser;
A storage tank for storing the condensed cooling liquid supplied through the condenser; And
A pump for pumping the condensed cooling liquid stored in the storage tank to the evaporator;
Organic Rankine cycle power generation system using a fuel cell comprising a.
The method according to claim 1,
Wherein the evaporator comprises:
An organic Rankine cycle using a fuel cell provided to detect whether a liquid preheated to a temperature range of the reference level leaks and to shut down the system when a liquid preheated to the temperature range of the reference level leaks Power generation system.
The method of claim 2,
Wherein the evaporator comprises:
An organic Rankine cycle power generation system using a fuel cell comprising a water level sensor for an evaporator that measures the level of the liquid preheated to the temperature range of the reference level to detect whether the liquid preheated to the temperature range of the reference level.
The method according to claim 1,
The storage tank,
And wherein said condensed cooling liquid leaks to shut down the system when said condensed cooling liquid leaks.
5. The method of claim 4,
The storage tank,
An organic Rankine cycle power generation system using a fuel cell comprising a water level sensor for a storage tank for measuring the level of the condensed cooling liquid to detect whether the condensed cooling liquid leaks.
The method according to claim 1,
A fuel cell further includes an identification unit connected to the evaporator to identify the current situation when the preheated liquid leaks through the evaporator, or when the condensed cooling liquid leaks through the storage tank. Organic Rankine Cycle Power Generation System.
The method of claim 6,
And a maintenance center to wirelessly communicate with the identification unit to identify the current situation and to cope with the current situation.
8. The method according to claim 6 or 7,
The identification unit is an organic Rankine cycle power generation system using a fuel cell comprising at least one of a digital display means, LED display means, alarm means.
The method of claim 1,
An organic Rankine cycle power generation system using a fuel cell further comprising a cold heat production unit connected to the turbine to produce cold heat by using the pressure of the superheated gas supplied through the turbine and a refrigeration cycle process.
The method of claim 9,
The cold heat production unit,
A compressor connected to the turbine to increase the pressure of the superheated gas to facilitate condensation of the superheated gas supplied through the turbine; And
A fuel cell including a refrigeration cycle providing unit for producing cold heat by repeatedly performing a refrigeration cycle process sequentially until the superheated gas supplied through the compressor at a constant pressure level becomes a condensation condition, an expansion condition, and an evaporation condition. Organic Rankine Cycle Power Generation System.
The method according to claim 1,
A power collector connected to the power generator to collect power generated through the power generator;
A second power converter connected to the power collector to convert the power collected through the power collector into a predetermined level of power;
An organic Rankine cycle power generation system using a fuel cell, the fuel cell further comprising an external device connected to the second power converter and selectively charged with power supplied at a predetermined level through the second power converter.
The method according to claim 1,
A third power converter connected to the power generation unit and converting the power produced by the power generation unit to a predetermined level of power;
An organic Rankine cycle power generation system using a fuel cell connected to the third power converter, and further comprising a load provided therein for each building to receive power converted to a predetermined level through the third power converter.

Images