JPH06249128A - Thermoelectric supply method which contributes to conservation of environment - Google Patents

Abstract

PURPOSE:To provide an effective thermoelectric supply method which enables effective utilization of cold heat of the Kurile Current as a large scale cold heat source and is useful for power generation which contributes to the conservation of environment and area-wide air conditioning while ensuring a heat source for conditioning at low cost in summer. CONSTITUTION:A thermal power generator and a Carnot's cycle generator are installed together. While controlling the temperature of flow-out sea water which is discharged from a condenser of the thermal power generator properly, heat is stored as a heat source for area-wide air conditioning after it is used as a heating source of an evaporator of the Carnot's cycle generator. On the other hand, cold sea water in the proper layer of the Kurile Current is stored as a heat source for area-wide air conditioning after it is used as cooling heat source of a condenser of the Carnot's cycle generator. Consequently, it is possible to utilize power generation energy of two generators of different types efficiently.

Description

Detailed Description of the Invention

2. Description of the Related Art Conventionally, there has been no attempt to utilize the cold heat of Oyashio on a large scale.

The inventor's research revealed that Oyashio's cold heat is an extremely effective cold heat source and that a very large amount of cooling water for the condenser is required in the power generation system using the Carina cycle. As a result, we have attempted to solve the recent remarkable increase in cooling electric power demand and shortage of electric power in the summer by a new technological utilization method of Oyashio's cold heat.

[Means for Solving the Problems] The inventor has found that the Oyashio tide southward off Sanriku even in summer, the seawater temperature is 2 ° C. at a depth of 50 m, and 10 × 10 ⁶ m ³ / sec in the range of depth of 300 m. In case of generating power of 2,500 kw / hour in the Carina cycle power generation system that uses a mixture of ammonia and water used as a working fluid in ocean temperature difference power generation, etc. Cooling seawater is about 3,600 m ³ /
The amount of hot water required for the evaporator is about 1,200
Knowing that it is about three times as high as m ³ / hour, they found a large-scale combined heat and power supply method by utilizing the cold heat of Oyashio as the condenser cooling water for large-scale carina cycle power generation.
That is, a large sea base is constructed in an appropriate sea area south of the Oyashio offshore Sanriku shore, and the cold sea water pumped up at that base is built by a large tanker in the nearest seaside area. Storage tank (hereinafter simply referred to as cold water tank)
Transport and store. On the other hand, normal seawater (hereinafter simply referred to as "A seawater" simply) released after cooling in a condenser of a thermal power generator (hereinafter simply referred to as "first generator") that uses oil, coal, natural gas, etc. as a heat source at a power plant. Is controlled to a release temperature of 40 ° C. to 48 ° C., which is suitable as a heating heat source for an evaporator of a carina cycle generator (hereinafter simply referred to as a second generator), and a heating action is performed in the second generator. The subsequent A seawater (hereinafter simply referred to as B seawater) is stored in a separately constructed heat source storage tank (hereinafter simply referred to as heating hot water tank) as a heat source for district heating at 30 ° C to 40 ° C. On the other hand, the Oyashio cold seawater stored in the cold water tank (hereinafter simply referred to as "Ko seawater") is used to cool the condenser of the second generator, and the seawater (hereinafter simply referred to as "Otsumi water") is used for district cooling. It is stored in a storage tank (hereinafter simply referred to as a cooling water tank) for use as a cooling heat source. When that happens, two series of heat utilization systems are constructed: first generator → A seawater → second generator → B seawater → heating hot water tank; and Ko seawater → second generator → Otsukai water → cooling water tank. The energy required for the generator is efficiently used, and the effectiveness of large-scale use of cold heat in Oyashio becomes clear.

As described in detail above, according to the present invention, the cold heat of Oyashio current as a large-scale cold heat source, which could not be used at all in the related art, is extremely effectively utilized, and the power generation by the combined use of thermal power generation and carina cycle power generation is performed. Energy can be used efficiently, low-cost district cooling is achieved in the summer, and there is no concern about air pollution or pollution of the ocean, except for exhaust gas generated from the combustion device for thermal power generators. An extremely effective combined heat and power supply method that contributes to environmental protection can be obtained.

Claims (1)

[Claims] We constructed a power station with a thermal power generator and a generator using the Karina cycle in the seaside area of Oyashio, which runs south off Sanriku, and appropriately controls the temperature of seawater discharged from the condenser of the thermal power generator. After being used as the heating heat source for the evaporator of the Kalina cycle generator, it is stored as a heat source for district heating, while seawater in an appropriate cold temperature region at an appropriate depth of the Oyashio is used as a cooling heat source for the condenser of the Kalina cycle generator. After heat treatment, the combined heat and power supply method contributes to environmental conservation obtained by storing as a heat source for district cooling