JP3291521B1 - Gas turbine cogeneration air conditioner - Google Patents

Abstract

An object of the present invention is to provide a gas turbine / cogeneration air conditioner having high safety and high thermal efficiency. In order to solve the above-described problems, the present invention extends an exhaust pipe (7) of a gas turbine engine (3) upward, and directly above the exhaust pipe (7) uses thermal energy of exhaust gas.
To cover the exhaust pipe 7 extending upward by the air conditioning unit 9. The air conditioner 9 has a dehumidifying rotor 12 and desorbs moisture adsorbed on the dehumidifying rotor 12 by thermal energy of exhaust gas. In addition, the desorption zone 17 of the dehumidifying rotor 12 is located below, and the length of the exhaust pipe 7 of the gas turbine engine 3 is shortened to shorten the high temperature portion, thereby further improving safety.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas turbine for air conditioning using, for example, exhaust heat of a micro gas turbine.
The present invention relates to a cogeneration air conditioner.

[0002]

2. Description of the Related Art In recent years, power generation has been decentralized, and power generation apparatuses using small gas turbines have been used for this purpose. Since small gas turbines have poor thermal efficiency, a cogeneration system is used to eliminate the poor thermal efficiency.

[0003] Among these cogeneration systems, gas turbine / cogeneration air conditioners have attracted attention as extremely realistic systems because of the long use period of the exhaust heat of the gas turbine and the high energy saving effect as a whole.

A general gas turbine / cogeneration air conditioner generates hot water from exhaust heat of a gas turbine generator, passes the hot water through a heat exchanger to generate hot air, and removes moisture adsorbed by a solid moisture adsorbent. Or by passing hot water through a heat exchanger to remove moisture from a moisture absorbing solution such as a lithium chloride solution.

[0005] However, since the air conditioner which once converts waste heat energy into hot water has poor thermal efficiency during conversion and poor overall energy efficiency, the exhaust gas from the gas turbine is directly introduced into the air conditioner to adsorb solid moisture. The applicant himself has developed a gas turbine / cogeneration air conditioner that can desorb moisture adsorbed on the agent.

[0006] Such a gas turbine / cogeneration air conditioner is characterized by high thermal efficiency, simple structure and easy maintenance.

[0007]

However, the temperature of the exhaust gas of a general small gas turbine is about 250 to 290 ° C. When such high-temperature exhaust gas is sent to an air conditioner through a pipeline, pipes are placed at a high place from the top of the small gas turbine to the top of the air conditioner so that people do not touch the pipeline in consideration of safety. Laying a road

[0008] However, even if the air conditioner is installed in a high place, the air conditioner is generally installed adjacent to the building. May accidentally touch hot pipes.

When a standing tree is in the vicinity, there is a danger of fire if the fallen leaves come into contact with the hot pipeline or the paper waste is blown away by the wind. Furthermore, in rainy weather, a high-temperature pipe is cooled by rain, and the temperature of the pipe is reduced to the temperature of exhaust gas, so that the efficiency of the air conditioner is reduced.

An object of the present invention is to provide a safe and efficient gas turbine / cogeneration air conditioner.

[0011]

According to the present invention, in order to solve the above-mentioned problems, an exhaust pipe of a gas turbine engine is extended upward, and an air conditioner using heat energy of exhaust gas is provided immediately above the exhaust pipe. To cover the exhaust pipe extending upward, and the air conditioner is thermally driven by the thermal energy of the exhaust gas.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention has a casing accommodating a gas turbine engine, and has an air conditioner for adsorbing moisture of air by a moisture adsorber and supplying dry air, An air-conditioning unit was placed just above the casing so as to cover the casing, and the exhaust pipe of the gas turbine engine was extended upward through the top surface of the casing, and was adsorbed by the moisture adsorbent by exhaust gas sent from the exhaust pipe. It is designed to desorb moisture, and the exhaust pipe of a gas turbine engine, which becomes hot, is covered with an air-conditioning unit, making it difficult for objects and people to touch the exhaust pipe, and because the exhaust gas energy is consumed immediately, it is safe. It has the effect that the property is secured.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a gas turbine / cogeneration air conditioner according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of a gas turbine / cogeneration air conditioner of the present invention, and FIG. 2 is a sectional view of the same.

1 is a micro gas turbine generator,
A micro gas turbine engine 3 having a generator integrated in a casing 2 is provided. And casing 2
A power supply controller 5 for system cooperation with a backup battery 4 at the time of a power outage and power supplied from a power line of a power company is provided therein.

Reference numeral 6 denotes a fan, which sends outside air into the casing 2 in order to cool the above components provided inside the casing 2. Reference numeral 7 denotes an exhaust gas pipe which sends exhaust gas from the micro gas turbine engine 3. 8
Is an air supply pipe, which is sent into the casing 2 by the fan 6 and cools the inside of the casing 2, after which the outside air exits after cooling. The outer periphery of the air supply pipe 8 is covered with a heat insulating material.

Reference numeral 9 denotes a dehumidifying air conditioner, which is provided immediately above the micro gas turbine generator 1.
It is installed to cover. Reference numerals 10 and 11 are feet for supporting the dehumidifying air conditioner 9. Reference numeral 12 denotes a dehumidifying rotor, which forms a honeycomb (honeycomb) body from inorganic fiber paper such as ceramic paper and carries a moisture adsorbent such as silica gel on the honeycomb body.

The dehumidifying rotor 12 is rotatably supported by a shaft, and is driven by a motor (not shown) for 20 minutes per minute.
It is spinning at about the speed of rotation. Dehumidifying rotor 12
Sealing materials 13 and 14 are provided on both sides of the outer peripheral edge to maintain airtightness.

That is, the dehumidifying rotor 12 is provided with the sealing material 13,
It is divided into an adsorption zone 16 and a desorption zone 17 by 14 and a partition plate 15. The desorption zone 17 is provided below the adsorption zone 16.

Reference numeral 18 denotes an orthogonal sensible heat exchanger, which has two fluid passages orthogonal to each other, and performs sensible heat exchange between the two fluid passages. Reference numeral 19 denotes a water spray for spraying water to one flow path of the orthogonal sensible heat exchanger 18.

Reference numeral 20 denotes a mixing chamber, in which the exhaust gas pipe 7 and the air supply pipe 8 communicate with each other, and mixes the exhaust gas of the micro gas turbine engine 3 with the outside air after cooling. 2
Reference numeral 1 denotes a processing blower for sending outside air to an adsorption zone 16 of a dehumidifying rotor 12. The air sent to the adsorption zone 16 is sent to the supply destination through the other flow path of the orthogonal sensible heat exchanger 18.

Reference numeral 22 denotes a desorption blower which discharges air in the mixing chamber 20, that is, the desorption zone 17 to the atmosphere through the dehumidifying rotor 12. Reference numeral 23 denotes a return air blower which converts air from a supply destination into an orthogonal sensible heat exchanger 1.
8 is discharged to the atmosphere through one flow path.

The gas turbine / cogeneration air conditioner of the present invention is constructed as described above, and its operation will be described below. First, the micro gas turbine engine 3 is started to start power generation. At this time, the power controller 5 operates to adjust the amount of generated power so that the power supplied from the power company is equal to or more than a predetermined value.

At this time, the fan 6 operates so as to cool the heat generated by the micro gas turbine engine 3 and the power controller 5 and supplies outside air into the casing 1. Then, the temperature of the outside air rises by about 30 ° C. by cooling, and is sent out from the air supply pipe 8.

At the same time as the start of the micro gas turbine engine 3, the processing blower 21, the desorption blower 22, and the return air blower 2
3 also starts. The dehumidifying rotor 12 is also rotated, and water is sprayed from the water spray 19.

The outside air is sent to the adsorption zone 16 of the dehumidifying rotor 12 by the processing blower 21 and passes through the dehumidifying rotor 12 to become dry air, and the temperature rises due to the heat of adsorption. The heated dry air is cooled through the other flow path of the orthogonal sensible heat exchanger 18 and is sent to a supply destination such as a room as comfortable air.

The air from the room is sucked into the dehumidifying air conditioner 9 by the return air blower 23, cooled by the water spray 19, and enters one flow path of the orthogonal sensible heat exchanger 18. The water sprayed by the water spray 19 is also vaporized in one flow path of the orthogonal sensible heat exchanger 18 and cools the air passing through the other flow path.

The humid air that has exited one of the flow paths of the orthogonal sensible heat exchanger 18 passes around the air supply pipe 8 and returns to the return air blower 23.
Released into the atmosphere by At this time, since the periphery of the air supply pipe 8 is covered with a heat insulating material, the air in the air supply pipe 8 is not cooled when passing through the periphery of the air supply pipe 8.

Since the dehumidifying air conditioner 9 is installed right above the micro gas turbine generator 1 so as to cover the micro gas turbine generator 1, it is possible to prevent the air pipe 8 from being wet and cooled by rainwater in rainy weather. The exhaust heat of the micro gas turbine engine 3 is used as desorption energy of the dehumidifying rotor 12 without waste.

Although the temperature of the air supply pipe 8 becomes high, if the space between the dehumidifying air conditioner 9 and the micro gas turbine generator 1 is reduced, the air supply pipe 8 cannot be easily accessed by humans and the hand may touch the air supply pipe 8 carelessly. There is no worry about burns.

Although the exhaust gas from the exhaust gas pipe 7 has a temperature close to 300 ° C., the outlet of the exhaust gas pipe 7 is completely surrounded by the mixing chamber 20, the periphery of the exhaust gas pipe 7 is surrounded by the air supply pipe 8, Since the exposed portion of 8 is also small, the safety is high.

[0031]

According to the gas turbine / cogeneration air conditioner of the present invention, an air conditioner is disposed immediately above the casing of the gas turbine engine, and the exhaust pipe of the gas turbine engine extends upward through the top surface of the casing of the gas turbine. The exhaust gas sent from the exhaust pipe is used to desorb the moisture adsorbed by the moisture adsorber by the exhaust gas sent from the exhaust pipe. High safety because of high temperature.

Further, since the exhaust pipe of the gas turbine engine is covered by the air conditioning unit, the exhaust pipe is not wet by rain during rainy weather, and the temperature of the exhaust gas is not lowered, so that the effect of desorbing moisture is not reduced.

Further, in the gas turbine / cogeneration air conditioner of the present invention, since the desorption zone is provided below, the length of the exhaust pipe is shortened and safety is enhanced. Efficient.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a gas turbine / cogeneration air conditioner of the present invention.

FIG. 2 is a sectional view showing Embodiment 1 of the gas turbine / cogeneration air conditioner of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Micro gas turbine generator 2 Casing 3 Micro gas turbine engine 4 Battery 5 Power controller 6 Fan 7 Exhaust gas pipe 8 Air supply pipe 9 Dehumidifying air conditioner 10, 11 Feet 12 Dehumidifying rotor 13, 14 Seal material 15 Partition plate 16 Adsorption zone 17 Desorption Zone 18 Orthogonal sensible heat exchanger 19 Water spray 20 Mixing chamber 21 Processing blower 22 Desorption blower 23 Return air blower

Claims (4)

(57) [Claims] An air conditioner for adsorbing moisture of air by a moisture adsorber and supplying dry air; and an air conditioner disposed just above the casing to cover the casing. A gas turbine / cogeneration system wherein an exhaust pipe of the gas turbine engine extends upward through a top surface of the casing, and the moisture adsorbed by the moisture adsorbent is desorbed by exhaust gas sent from the exhaust pipe. Air conditioner. 2. The gas turbine / cogeneration air conditioner according to claim 1, further comprising a heat exchanger for cooling the dry air. 3. The gas turbine / cogeneration air conditioner according to claim 1, wherein the moisture adsorber is rotor-shaped, and is divided into an adsorption zone and a desorption zone, and the desorption zone is provided below the adsorption zone. 4. A gas turbine / cogeneration air conditioner according to claim 1, further comprising an air supply pipe surrounding an exhaust pipe of the gas turbine engine, wherein the air supply pipe allows air cooled inside a casing containing the gas turbine engine to pass therethrough. .