JP2003293859A - Energy supply system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To economically use an individual energy supply system. <P>SOLUTION: In the system, energy is supplied to an energy consuming facility A from an individual energy supplying device B installed in the energy consuming facility A. It is provided with a change-over means a1 for alternately changing individual power inputted from the individual energy supplying device B and existing power supplied from an electric power supplier to output them as power for electric lamps of the energy consuming facility A, and a change- over control means a2 for controlling the change-over means a1 so that the individual power is outputted as the power for the electric lamps only in a time zone wherein a fee of the existing power is high. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an energy supply system.

[0002]

2. Description of the Related Art As is well known, there is a cogeneration system as an individual energy supply device installed in a relatively small-scale energy consumption facility such as a store. This cogeneration system supplies electric power to an energy consuming facility by driving a generator with an engine, and also supplies waste heat of the engine to the energy consuming facility as a heat source for cooling and heating of the energy consuming facility.

By the way, the cogeneration system is extremely efficient as an energy generation source, but when it is actually applied to an energy consuming facility, various problems as described below have been pointed out. (1) In the situation where the electric power and thermal energy generated by the cogeneration system are not being effectively utilized,
Realization of highly economical operation method of cogeneration system is desired. (2) Since the cogeneration system is powered by the engine, it is desired to improve the environmental resistance of the engine exhaust gas. In particular, there is a demand for reduction of NOx (nitrogen oxide). (3) Surplus electricity generated in the cogeneration system is sold to existing power suppliers, but in this case, it is necessary to install additional electric equipment-related equipment in relation to the equipment of the power supplier. is there.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an energy supply system using an individual energy supply device which is excellent in economic efficiency and environmental resistance.

[0005]

In order to achieve the above object, the present invention relates to a first aspect of an energy supply system.
As a means of, a system that supplies energy to the energy consumption facility from the individual energy supply device installed in the energy consumption facility, wherein individual power input from the individual energy supply device and existing power supplied from the power supplier Switching means for selectively switching and outputting as electric power for lights of energy consuming facilities, and switching control for controlling the switching means so as to output individual electric power as electric power for electric lights only during a time period when the charge of the existing electric power is expensive. Means and means are adopted.

As the second means relating to the energy supply system, in the above-mentioned first means, the individual energy supply device is provided with an individual electric power abnormality detecting means for detecting an abnormality of the individual electric power, and the individual electric power is used as electric power for a lamp. When the individual power abnormality detecting means detects an abnormality in the individual power while the electricity is being supplied to the consumption facility, the switching control means outputs an abnormality control signal for instructing switching to the existing power.

As a third means relating to the energy supply system, in the first or second means, the individual energy supply device is provided with an existing electric power abnormality detecting means for detecting an abnormality of the existing electric power, and the existing electric power is used for a lamp. When the existing electric power abnormality detecting means detects an abnormality in the existing electric power while the electric power is being supplied to the energy consuming facility, the switching control means outputs an abnormal control signal for instructing switching to the individual electric power. adopt.

As a fourth means relating to the energy supply system, in any one of the first to third means, the individual energy supply device employs a structure in which individual power is generated by the power of the engine.

As a fifth means relating to the energy supply system, in the above-mentioned fourth means, when the energy consuming facility has an absorption refrigerator, the individual energy supply device uses the absorption refrigerator as a heat source for the engine. It adopts a configuration that supplies cooling water.

As a sixth means relating to the energy supply system, in the fifth means, when the energy consuming facility has an air conditioning facility, cold / hot water discharged from the absorption refrigerator is supplied to the air conditioning facility as a heat source. Adopt a configuration.

As a seventh means relating to the energy supply system, in any one of the fourth to sixth means, when the energy consuming facility has a hot water supply facility, the individual energy supply device uses the engine as a heat source for the hot water supply facility. The cooling water is supplied to.

As the eighth means relating to the energy supply system, in any one of the fourth to seventh means, the engine employs a construction in which kerosene or natural gas liquefied fuel is used as fuel to generate power.

As a ninth means relating to the energy supply system, in any one of the fourth to eighth means, water for spraying water in the engine in order to reduce nitrogen oxides contained in the exhaust gas of the engine. A structure including a spraying means is adopted.

As the tenth means relating to the energy supply system, in any one of the above fourth to ninth means,
A configuration is adopted in which intake air pressurizing means for pressurizing intake air is provided in order to reduce smoke contained in the exhaust gas of the engine.

As an eleventh means relating to the energy supply system, the construction of any one of the fourth to tenth means is further provided with a boiler for supplying hot water as a heat source to the absorption refrigerator.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an energy supply system according to the present invention will be described below with reference to the drawings. In addition, this embodiment applies this invention to the store which is one in an energy consumption facility.

FIG. 1 is a system configuration diagram according to this embodiment. In this figure, reference symbol A is a store (energy consumption facility), and B is a cogeneration system (individual energy supply device). The cogeneration system B supplies individual electric power (electrical energy) and hot water (that is, thermal energy) as energy required by the store A. On the other hand, the store A consumes electric power for the electric light for illuminating the inside of the store, and also consumes heat energy for operating the refrigeration facility for storing the products and the air conditioning facility for air conditioning the store. To do.

In the store A, high-speed switch a1 (switching means), power source switching device a2 (switching control means, existing power abnormality detecting means), and air conditioning are provided as equipment for operating the above lights, refrigeration equipment and air conditioning equipment. The indoor unit a3 is provided. Of these components, high-speed switch a1
The power supply switching device a2 is an accessory device of the present energy supply system added to the existing store equipment.

The high-speed switch a1 is a switch for high-speed switching operation in which the momentary power failure time at the time of switching is set to 20 msec or less, and under the control of the power source switching device a2, the individual power supplied from the cogeneration system B The existing electric power of the existing electric light line connected to the electric power supplier is selectively switched and supplied to each lighting equipment as electric power for the electric light. Based on the switching control signal input from the cogeneration system B, the power supply switching device a2 outputs the individual electric power as electric power for the electric light only during a time period when the existing electric power is expensive, that is, a daytime time period. To control.

The power supply switching device a2 also has a function as an existing power abnormality detecting means, and outputs an emergency operation signal to the cogeneration system B when detecting the interruption of the existing power supply due to a power failure. When this emergency operation signal is input, the cogeneration system B starts operation urgently and quickly supplies individual power to the store A. The air conditioning indoor unit a3 is an existing facility for air conditioning the inside of the store A.

Next, the detailed configuration of the cogeneration system B will be described with reference to FIG. As shown in this figure, this cogeneration system B
Engine 1, generator 2, radiator 3, kerosene tank 4,
Pump 5, refrigerator bypass valve 6, radiator bypass valve 7, hot water boiler 8, pump 9, turbocharger 10.
(Intake air pressurizing means), compressor 11 (intake air pressurizing means), heat exchanger 12, EGR cooler 13, control valve 14,
Pump 15, filter 16, water tank 17, voltage sensor 18 (electric power abnormality detecting means), control device 19, absorption refrigerator 20, pump 21, cold / hot water bypass valve 22, cooling tower 23, pump 24, cooling water bypass valve. It is composed of 25 etc.

The engine 1 rotationally drives the generator 2 using kerosene supplied from the kerosene tank 4 as fuel, and its cooling water (hot water) is supplied to the absorption refrigerator 20 of the store A by the pump 5. It Kerosene is low in pollution because it has a low sulfur content compared to heavy oil and light oil, and is economical because it has a low unit price per unit calorie when compared to city gas and the like. For example, the unit price per unit heat of kerosene is 4 yen / 1000kcal, but city gas is 5 yen / 1.
It is 000 kcal. Although the sulfur oxide contained in the fuel has a lubricating action, since the engine 1 uses kerosene having a low sulfur content, in order to supplement the lubricity and prevent the wear of the moving part, Many improvements have been made to surface treatment and materials.

The generator 2 is a relatively inexpensive single-phase three-wire type motor generator that outputs a single-phase alternating current of 100 V or 200 V, and outputs the single-phase alternating current to the high-speed switch a1 and the voltage sensor 18 as individual power. To do. Radiator 3 is
The absorption refrigerator 20 of the store A is provided to cool the cooling water of the engine 1 to a predetermined temperature when heat energy is not required, and is inserted in series with the engine 1 in the cooling water circulation path. There is. The kerosene tank 4 stores a predetermined amount of kerosene, and supplies kerosene to the engine 1 and the hot water boiler 8.

The pump 5, under the control of the controller 19, is the engine 1, the radiator 3 and the absorption refrigerator 20.
The cooling water is circulated in the upper circulation path consisting of, and is provided on the cooling water outlet side of the engine 1 in the circulation path. The refrigerator bypass valve 6 is a three-way valve and is provided at the inlet of the absorption refrigerator 20. The refrigerator bypass valve 6 switches between the supply of the cooling water to the absorption refrigerator 20 and the supply of the cooling water to the bypass path under the control of the control device 19. The radiator bypass valve 7 is also a three-way valve and is provided at the cooling water inlet of the radiator 3.
The radiator bypass valve 7 switches between supplying cooling water to the radiator 3 and supplying cooling water to the bypass path.

The hot water boiler 8 is provided to supplement the thermal energy of the cooling water, and heats a part of the cooling water and sends it to the circulation path. The pump 9 is for sending the cooling water heated by such a hot water boiler 8 to the circulation path, and is provided on the cooling water outlet side of the hot water boiler 8. The hot water boiler 8 generates hot water similar to the cooling water in place of the engine 1 when the engine 1 is not operated, that is, when the cogeneration system B does not supply individual power to the store A.

The turbocharger 10 rotates the compressor 11 using the exhaust gas of the engine. The compressor 11 is for pressurizing the intake air of the engine 1, compresses the outside air (air) and supplies the compressed air to the engine 1. The heat exchanger 12 is a turbocharger 1.
The exhaust gas discharged from 0 is cooled and released into the atmosphere. The EGR cooler 13 cools the exhaust gas of the engine at a predetermined rate. The exhaust gas cooled by the EGR cooler 13 is mixed with the intake air output from the compressor 11 and supplied to the engine 1.

The control valve 14 is for controlling the amount of water sprayed into the mixed gas composed of the intake air and the exhaust gas under the control of the control device 19. The pump 15
The filter 16 is for supplying water to the control valve 14, the filter 16 is for removing foreign matters from the water discharged from the water tank 17, and the water tank 17 is for collecting a certain amount of water from the clean water. It is for accumulating in. These control valve 14, pump 15, filter 16 and water tank 17
Constitute the water spraying means in the present embodiment.

The voltage sensor 18 monitors the voltage of individual electric power and notifies the control device 19 of an abnormality of the generator 2 or an abnormality of voltage due to overload. Control device 19
Has an internal timer function and generates various control signals based on the time to totally control the operation of the present energy supply system and the present cogeneration system B. In addition, the control device 19 includes a power source switching device a.
When the emergency operation signal is received from 2, the engine 1 is urgently started and the supply of individual electric power to the store A is promptly started.

The absorption refrigerating machine 20 realizes a refrigerating function by heat exchange using hot water supplied from the engine 1 and the hot water boiler 8 as a heat source. This absorption refrigerator 2
The cold / hot water generated by the heat exchange of 0 is supplied to the air conditioning indoor unit a3 in the store A by the pump 21 and is used as a cold heat source of the air conditioning equipment. The hot and cold water bypass valve 22 is
When the air conditioning equipment does not operate, cold and hot water is bypassed. The cooling tower 23 is for radiating the excess heat energy in the heat exchange of the absorption refrigerator 20 to the outside air. The cooling water obtained by the heat exchange is pump 24
Is supplied to the cooling tower 23. Further, a cooling water bypass valve 25 is provided at the outlet of the cooling water supplied to the cooling tower 23 in the absorption chiller 20, and the cooling tower 23 is heated by the hot water at the time of switching from the heating operation to the cooling operation.
It is provided to prevent the plastic filler inside from melting.

Next, the operation of the present energy supply system configured as described above will be described in detail.

First, the supply of individual electric power to the store A will be described. The control device 19 normally controls the operation of the energy supply system based on the time measured by the internal timer function. That is, in the control device 19, a high-priced time period and a low-priced time period for the existing power are stored in advance, and the operation of the energy supply system is started when the existing power fee is in the low time period. , The operation of this energy supply system will be stopped when the existing electricity charges become expensive. That is, under the control of the control device 19, the energy supply system operates only in the daytime and is in the stopped state at night.

More specifically, the control device 19
When the operation start time (daytime) is reached, the engine 1 is started and individual power is supplied from the generator 2 to the high speed switch. Then, the control device 19 outputs a switching control signal to the power supply switching device a2 when the voltage of the individual electric power monitored by the voltage sensor 18 reaches a specified value, so that the individual electric power can be selectively output as electric power for a lamp. Switch a1
To control. As a result, the electric power for the electric light, which has been supplied to the lighting equipment in the store A so far, is switched from the existing electric power to the individual electric power.

On the other hand, the control device 19 outputs a switching control signal to the power source switching device a2 at the operation stop time (nighttime), so that the existing power is selectively output as power for the lamp. Control a1. Then, the control device 19 further stops the engine 1 to stop the output of the individual electric power from the generator 2. As a result,
The electric power for the electric light, which has been supplied to the lighting equipment in the store A so far, is switched from the individual electric power to the existing electric power.

As described above, in the state where the high-speed switch a1 selects the individual electric power and supplies it to the store A as the electric power for the light, the control device 19 detects that the voltage of the individual electric power monitored by the voltage sensor 18 is abnormal. If it is determined that the power source switching device a
Output to 2. For example, when the voltage abnormality of the individual power continues for 3 seconds, the control device 19 determines that a serious failure has occurred in the generator 2 and instructs the power supply switching device a2 to supply the existing power to the store A. As a result, the existing electric power is supplied to the store A as electric power for the light. Then, such an abnormality is notified to the manager of the store A by notifying means (not shown).

On the contrary, since the power supply switching device a2 constantly monitors the state of the existing electric power, if the existing electric power is cut off due to a power failure or the like and the electric power for the lamp cannot be supplied to the store A, the existing electric power is cut off. To the control device 19. As a result, the control device 19 causes the engine 1 to be urgently started to supply the individual electric power to the store promptly. For example,
If the existing power is cut off for 1 second, the power switching device a2
Notifies the control device 19 of the interruption of the existing power, and the control device 19 supplies the individual power to the store A within 40 seconds after receiving the notification.

Here, the engine 1 burns kerosene supplied from the kerosene tank 4 to generate power for rotationally driving the generator 2. The exhaust gas generated by this combustion is supplied to the turbocharger 10. The compressor 11 is driven. Then, by driving the compressor 11, the intake air of the engine 1 is pressurized. Due to the pressurization of the intake air, a larger amount of air used for combustion of kerosene is sucked into the engine 1, and the kerosene in the engine 1 is effectively mixed with air due to the stirring action of the pressurized air. Therefore, the generation of smoke is suppressed.

On the other hand, a part of the exhaust gas of the engine 1 is EG
After being cooled by the R cooler 13, it is mixed with the intake air and returned into the engine 1. Exhaust gas temperature is 300
Approximately 200 ° C, and some of this exhaust gas is EGR
By being cooled by the cooler 13 and being returned to the engine 1, the maximum combustion temperature in the engine 1 is lowered,
Generation of nitrogen oxides (NOx) is reduced. Here, the EGR rate, which is the ratio of the exhaust gas flow rate to the intake air flow rate, is optimally about 20%, and if it is set higher than this, combustion oxygen will decrease and smoke will easily occur. The combustion temperature is not reduced and nitrogen oxides (NOx) are not reduced.

Furthermore, the amount of nitrogen oxides (NOx) generated is reduced by adopting the above-mentioned water spraying means. That is, when the engine 1 is in operation, the flow rate of water droplets having a particle size of about 30 to 100 μm is set by the control valve 14 and mixed into the intake air from the spray nozzle. The cooling action of the water drops lowers the maximum combustion temperature in the engine 1 and further reduces the generation of nitrogen oxides (NOx).
By spraying water droplets, the carbon-hydrogen bond during combustion is released and the molecular weight is lowered, so that the combustibility is improved.

FIG. 3 is a measurement result showing the emission amount of nitrogen oxides (NOx) in this energy supply system. As shown in this measurement value, by ejecting water droplets into the intake air, the emission amount of nitrogen oxides (NOx) in a state containing 13% of oxygen (O ₂ ) is reduced to 100 ppm while maintaining power generation efficiency. be able to. In addition, the spray nozzle has a spiral groove formed inside in order to improve mixing with intake air, and a swirling flow of the water drop is generated by the action of the spiral groove so that the spread angle of the water drop is increased. Has been devised.

Normally, when the engine 1 is started, the pump 5 operates and the cooling water is inserted through the cooling pipe in the engine 1. The cooling water is heated by the waste heat of the engine and becomes hot water. It is supplied to the absorption refrigerator 20 as a heat source. In the normal state, the refrigerator bypass valve 6 is set so as to supply hot water to the absorption refrigerator 20 without bypassing the absorption refrigerator 20, and the radiator bypass valve 7 absorbs water by bypassing the radiator 3. Return cooling water from the refrigerator 20 is directly returned to the engine 1. That is, the cooling water heated by the engine 1 circulates between the engine 1 and the absorption chiller 20 via the pump 5.

The absorption refrigerator 20 generates cold / warm water by performing a concentration cycle of the lithium bromide solution using cooling water (warm water) as a heat source. This cold and warm water is pump 2
It is supplied to the air conditioning indoor unit a3 by 1 and used for air conditioning in the store A.

When the air-conditioning load on the air-conditioning indoor unit a3 disappears because the store A does not use air-conditioning equipment, the heat load becomes extremely light, so the radiator bypass valve 7 operates and the absorption refrigerator 20 is operated. The hot water returned from is cooled by the radiator 3 and then returns to the engine 1. The control device 19 opens the radiator bypass valve 7 immediately when the temperature of the return hot water reaches 90 ° C. or higher, for example. As a result, the return warm water is supplied to the radiator 3 and returns to the engine 1 in a cooled state. The temperature of the return hot water is 85
When the temperature falls below ° C, the control device 19 closes the radiator bypass valve 7 and returns the return hot water directly to the engine 1.

When the hot water request signal is input from the air conditioning indoor unit a3, the controller 19 opens the refrigerator bypass valve 6 to supply hot water to the absorption chiller 20, and the hot water request signal is not input. In the state, the refrigerator bypass valve 6 is closed and the hot water supply to the absorption refrigerator 20 is stopped. The hot water request signal indicates that the absorption refrigerator 20 is in operation during cooling.
The temperature of the cold / hot water supplied from the air conditioning indoor unit a3 to 10.
When the temperature reaches 5 ° C, it is input to the control device 19, when the temperature of the cold / hot water becomes 6.5 ° C, it is not input, and when the temperature of the cold / hot water reaches 55 ° C, it is input to the control device 19, and the cold / hot water is input. When the temperature reaches 65 ° C, no input is made.

On the other hand, the load of the air conditioning indoor unit a3 increases during a cooling load such as the afternoon of summer, that is, the time when the heat load of the air conditioning indoor unit a3 becomes extremely heavy. 20 and air conditioning indoor unit a3
It may not be possible to drive and stably. In such a case, the control device 19 cannot supply the amount of heat required by the absorption chiller 20 and the air conditioning indoor unit a3 by only the cooling water of the engine 1 by monitoring the temperature of the cold / hot water, for example. When judged, the hot water boiler 8 is started and the pump 9 is operated to supply the hot water generated by the hot water boiler 8 to the absorption refrigerator 20.

That is, in this case, in addition to the engine 1, the hot water boiler 8 also acts as a heat source, and the absorption refrigerator 2
The amount of heat required by 0 is supplied to the absorption refrigerator 20. The control device 19 is, for example, 60 when the temperature of the cold / hot water at the outlet of the air conditioning indoor unit a3 is 50 ° C. or lower during heating.
When it continues for a second, and when the state of 11 ° C. or higher continues for 180 seconds during cooling, the hot water boiler 8 is started and the pump 9 is operated. In addition, for example, when the temperature of the hot / cold water at the outlet of the air conditioning indoor unit a3 remains at 57 ° C or higher for 180 seconds during heating, the controller 19 keeps the temperature at 6.5 ° C or lower for 60 seconds. When the second continues, the hot water boiler 8 and the pump 9 are stopped.

According to the present embodiment, the cogeneration system B is operated only during the time period when the charge of the existing electric power is high, and the individual electric power is supplied to the store A as electric power for the light.
For example, the fee system for existing electricity is about 30 yen / kWh during the day.
On the other hand, it is about 6 yen / kWh at night. Therefore, since the cogeneration system B is operated only during the daytime when the value of the individual electric power is relatively large with respect to the cost required to operate the cogeneration system B, the economic efficiency of the cogeneration system B is improved. improves.

In addition, when supplying individual power to the store A as electric power for lighting, in the present energy supply system, only the high speed switch a1 is used to switch between the existing power and the individual power, and the system with the existing power line is used. Since the interconnection is not performed, it does not require expensive electric power equipment such as an inverter or a transformer, and the cost is low.

The present invention is not limited to the above embodiment, and the following modified examples are possible. (1) In the above embodiment, the energy supply system using the cogeneration system as the individual energy supply device has been described, but the individual energy supply device is not limited to the cogeneration system and various types driven by an engine. It may be a form of generator.

(2) The above embodiment relates to the case where cold / hot water (heat energy) as exhaust heat is supplied to the air conditioning equipment of the store A. However, hot water (heat energy) is supplied to the hot water supply facility provided in the store A. ) Is supplied, the system configuration has a store A'and a cogeneration system B'as shown in FIG. That is, the heat energy of hot water is supplied to the hot water supply facility a4 through the heat exchanger 26 shown in FIG. In the functional configuration of the cogeneration system B ′ shown in FIG. 5, the difference from the above embodiment is that a heat exchanger 26 is provided instead of the absorption refrigerator 20. The cogeneration system B ′ supplies hot water output from the heat exchanger 26 to the store A ′ as a heat source.

The hot water supply facility a4 in the store A'stores the hot water heated by the heat exchanger 26 in the hot water supply tank a5, and the hot water in the hot water supply tank a5 is pumped out by the pump a8 and supplied to the store A '. It is circulated with the heat exchanger 26. The amount of hot water in the hot water supply tank a5 is measured by the level meter a6, and when there is no specified amount of hot water, the solenoid valve a7 is activated to additionally supply clean water into the hot water supply tank a5. In this case as well, individual power is supplied to the power for lighting of the store A ′ exactly as in the above embodiment.

[0051]

As described above, according to the present invention,
A system for supplying energy to an energy consumption facility from an individual energy supply device installed in an energy consumption facility, wherein individual power input from the individual energy supply device and existing power supplied from a power supplier are selected. And switching control means for controlling the switching means so as to output the individual power as the electric power for the electric light only during a time period when the charge of the existing electric power is expensive, Therefore, the individual energy supply device can be used economically.

For example, the charge system for the existing electric power is 6 yen / kWh at night, which is relatively easy, but is set at 30 yen / kWh at a high price during the daytime. In this way, the individual energy supply device is operated only during the time when the charge is high to supply individual electric power to the energy consumption facility, that is, the value of the individual electric power is relative to the cost required to operate the individual energy supply device. By operating the individual energy supply device only during a very large time period, the economical efficiency of the individual energy supply device is improved.

[Brief description of drawings]

FIG. 1 is a system configuration diagram according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a functional configuration of a cogeneration system (individual energy supply device) according to an embodiment of the present invention.

FIG. 3 is a table showing nitrogen oxide discharge performance of a cogeneration system according to an embodiment of the present invention.

FIG. 4 is a system configuration diagram according to a modification of the embodiment of the present invention.

FIG. 5 is a block diagram showing a functional configuration of a cogeneration system (individual energy supply device) according to a modified example of the embodiment of the present invention.

[Explanation of symbols]

A: Store (energy consumption facility) a1 ... High-speed switch (switching means) a2 ... Power supply switching device (switching control means, existing power abnormality detection means) a3 ... Air conditioner indoor unit a4 ... Hot water supply equipment a5 ... Hot water supply Tank a6 ...... Level meter a7 ...... Solenoid valve a8 ...... Pump B ...... Cogeneration system (individual energy supply device) 1 ...... Engine 2 ...... Generator 3 ...... Radiator 4 ...... Kerosene tank 5 ...... Pump 6 ...... Refrigerator bypass valve 7 ...... Radiator bypass valve 8 ...... Hot water boiler 9 ...... Pump 10 ...... Turbocharger (intake air pressurizing means) 11 ...... Compressor (intake air pressurizing means) 12 ...... Heat exchanger 13 ...... EGR cooler 14 ... Control valve (water spraying means) 15 ... Pump (water spraying means) 16 ... Filter (water spraying means) 17 ... Water tank (water spraying means) 18 ... Voltage sensor Individual power abnormality detection means) 19 ...... controller 20 ...... absorption chiller 21 ...... pump 22 ...... hot and cold water bypass valve 23 ...... cooling tower 24 ...... pump 25 ...... cooling water bypass valve 26 ...... heat exchanger

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F02B 43/00 F02B 43/00 A 47/02 47/02 F02M 25/022 F24F 5/00 101A F24F 5 / 00 101 F24H 1/00 631C F24H 1/00 631 F25B 27/02 K F25B 27/02 H02P 9/04 P H02P 9/04 F02M 25/02 F J (72) Inventor Hidefumi Takada 3-chome, Toyosu, Koto-ku, Tokyo 2-15 Ishikawajima Harima Heavy Industries Ltd. Tokyo Engineering Center F-term (reference) 3G005 EA16 FA05 FA35 GB24 GB26 HA05 HA12 3L054 BF04 5H590 AA02 CA07 CA21 EA03 EA07

Claims (11)

[Claims] 1. A system for supplying energy to the energy consumption facility (A) from an individual energy supply device (B) installed in the energy consumption facility (A), the system being supplied from the individual energy supply device (B). Switching means (a1) for selectively switching between the individual electric power to be supplied and the existing electric power supplied from the electric power supplier and outputting the electric power as electric power for the electric power of the energy consuming facility (A), and a time when the existing electric power is expensive An energy supply system comprising: a switching control means (a2) for controlling the switching means (a1) so that only the band outputs individual power as electric power for a lamp. 2. The individual energy supply device (B) includes individual power abnormality detecting means (18) for detecting abnormality of individual power.
When the individual electric power abnormality detecting means (18) detects an abnormality in the individual electric power while the individual electric power is being supplied to the energy consuming facility (A) as electric power for a light, the switching control means (a2) is provided. The energy supply system according to claim 1, wherein an abnormality control signal for instructing switching to the existing power is output. 3. The individual energy supply device (B) has an existing power abnormality detecting means (a2) for detecting an abnormality of existing power.
When the existing electric power abnormality detection means detects an abnormality in the existing electric power while the existing electric power is being supplied to the energy consuming facility as electric power for a light, the switching control means is instructed to switch to the individual electric power. The energy supply system according to claim 1 or 2, which outputs a control signal. 4. The energy supply system according to claim 1, wherein the individual energy supply device (B) generates individual electric power by the power of the engine (1). 5. When the energy consuming facility (A) has an absorption refrigerator (a3), the individual energy supply device (B) cools the engine (1) as a heat source for the absorption refrigerator (a3). The energy supply system according to claim 4, wherein water is supplied. 6. When the energy consuming facility (A) has an air conditioning facility (a4), cold / hot water discharged from the absorption refrigerator (a3) is supplied to the air conditioning facility (a4) as a heat source. The energy supply system according to claim 5. 7. An individual energy supply device (B) when the energy consuming facility (A) has hot water supply equipment (a9)
Supplies the cooling water of the engine (1) as a heat source to the hot water supply equipment (a9).
The energy supply system according to any one of to 6. 8. The energy supply system according to claim 4, wherein the engine (1) generates power by using kerosene or natural gas liquefied fuel as fuel. 9. A water spray means (14-17) for spraying water in the engine (1) in order to reduce nitrogen oxides contained in the exhaust gas of the engine (1). The energy supply system according to any one of Items 4 to 8. 10. An intake pressurizing means (10, 11) for pressurizing intake air in order to reduce smoke contained in the exhaust gas of the engine (1).
~ The energy supply system according to any one of 9 to 10. 11. The energy supply system according to claim 4, further comprising a boiler (8) for supplying hot water as a heat source to the absorption refrigerator (a3).