KR100954234B1 - Sea water source heat pump system for heating and cooling - Google Patents

Abstract

PURPOSE: A cooling/heating device with a heat pump for a field for fisheries seedlings using seawater is provided to maintain the regular temperature of seawater provided to a fish raising water tank regardless of ocean temperature. CONSTITUTION: A cooling/heating device with a heat pump for a field for fisheries seedlings using seawater comprises a seawater intake apparatus(19), a seawater heat exchange device(1), a heat pump(2), a raising water tank for a field for fisheries seedlings(5), a water storage tank(21), a discharge pump(12), a filter(17), an effluent heat exchanger(4), and a waste seawater return pipe(A). The raising water tank receives and stores seawater which is heat-exchanged with the cooling-and-heating circulating water for a heap pump. The water storage tank stores waste seawater discharged from the raising water tank. The filter eliminates foreign materials included in the waste seawater. The effluent heat exchanger increases the temperature of the waste seawater. The waste seawater return pipe supplies the seawater to the raising water tank.

Description

Sea water source heat pump system for heating and cooling

The present invention relates to a heat pump heating and cooling device for aquatic nursery using seawater, which is in close proximity to the sea and is suitable for regional characteristics as an infinite clean energy source in nearby seas such as Jeju Island and the east-west south coast where the location is advantageous. The temperature of seawater supplied to aquaculture nursery tanks by providing a high-performance, eco-friendly and energy-saving heat pump air pump heating and cooling device that optimally meets the conditions of aquatic nursery growth with the heat pump heat source. By keeping it constant throughout the year in an artificial way to reduce fish stress caused by rapid changes in water temperature and to promote the survival and growth of fish, including fry, to shorten the period of farming and to produce superior seedlings. Incomes and national competition Using the seawater to thereby enhance relates to a heat pump air conditioning system for fish nurseries.

Since fish, including larvae, can achieve optimal growth efficiency only within the appropriate water temperature range, fish farms can be used to reduce stress and promote growth due to rapid changes in aquaculture water temperature caused by seasonal factors. Therefore, it is very important to maintain proper breeding water temperature. Therefore, fish farms, including fish farms, supply raw water, such as sea water, which minimizes temperature deviations by adjusting the water temperature to a temperature suitable for growing fish.

Since the water temperature of fish farms, such as a fishery nursery, has a great influence on the growth and survival of fish, in normal fish farms, aquaculture water, such as seawater, which is introduced to control the temperature of the farmed water, is raised by using a boiler in winter, and liquid nitrogen in summer. The water temperature is adjusted to a temperature suitable for fish farming by cooling with water, ice, etc., but the fuel cost has caused a great economic burden on the operation of the fish farm along with labor costs due to the recent rapid rise in oil cost. Nevertheless, it causes energy waste due to heat loss by simply moving the cooled or heated stored water along the heating and cooling pipe or releasing the heated seawater as it is.

Therefore, fish farms are seeking various ways to reduce the economic burden of operating fish farms by reducing energy consumption due to sea water heating, minimizing heat loss, and providing optimum farming water with precise temperature control. As an efficient fish farming system has not yet been developed, improving the energy use efficiency of fish farms, including nurseries, is also an important task for improving the income of fishermen.

       In recent years, the utilization of unused energy plays a big role not only in the economic pursuit of saving energy or using high efficiency of energy and preventing pollution, but also in fulfilling social capital that contributes to the global environment.

Heat pump heating and cooling system using unutilized energy to reduce global warming due to environmental pollution has various methods using air heat source, geothermal heat source, wastewater heat recovery, waste heat recovery, solar heat, etc. Seasonal fluctuations are less than that of river water, and the freezing temperature is about -2 ℃, so heat can be used to lower temperature than river water, and it has a temperature difference of 5 ~ 10 ℃ from the atmosphere when cooling and heating. 10 ℃ low and 5 ~ 8 ℃ higher than the air in winter), it has very good characteristics as a heat source of heat pump, and seawater temperature difference heating and cooling system is slightly different depending on seawater temperature, but it can increase system efficiency by 40 ~ 60%. In the case of Korea, considering that three sides are oceans, seawater thermal energy is an almost infinite energy source No emissions of CO ₂ generated when the fuel does not use fossil fuels without the impact of the oil supply system is environmentally friendly.

      Considering the geographic location conditions and favorable sea temperature differences, the south and east coasts of Korea have a small difference in tidal sea water, while they have sufficient conditions to be used as heat sources for heat pumps in winter. Since the seawater temperature is maintained above 10 ℃, it has good conditions to introduce the seawater heat source air-conditioning system.

     In particular, the introduction of heat pump air-conditioning system for fish farms using sea water in the fish farms in the geographic location where it is easy to secure seawater source because it is located close to the coast is easy to secure the source of seawater, compared to conventional heating and cooling systems using fossil fuels. Despite its many advantages, the development and dissemination of heat pump air conditioning systems using sea water in fish farms is vulnerable.

      Since the temperature control of fish farms and other aquaculture farms does not have a large temperature control range, the introduction of a heat pump system makes it possible to precisely control the temperature very effectively, greatly improving productivity and reducing energy costs to less than half. It is known as

       An example of using a heat pump system in aquaculture farms has been to implement a higher coefficient of performance (COP) than a direct oil boiler system by using flounder farming using cold water, but in this case, waste heat was not utilized and brine was not used. As a heat pump system used, the thermal efficiency is low and there is a problem in that the water supply of the proper temperature is not supplied to the aquaculture tank.

       However, in the heat pump system for aquaculture tanks using seawater temperature difference energy, complex technologies such as high efficiency pump design, heat pump and intake pipe construction, heat exchange method, and control technology for operating the system are important prerequisites for deciding whether the system is good or not. In particular, seawater is required to establish pretreatment techniques such as pollution prevention and corrosion prevention of heat exchanger, prevention of adhesion of marine organisms.

  The present inventors have solved the problems of the fish farming water supply system of the fish farm including the conventional fisheries nursery described above to develop the fish farming fish farming water supply system of the fish farm in an economical and environmentally friendly way, the three sides are the sea In this case, the temperature difference energy source which has almost infinite energy source and has the advantage of developing alternative energy for fish farms, utilizes the heat source property of sea water for cooling and heating purposes, and prevents environmental pollution by using heat pump as energy source conversion facility. The present invention has been completed with a cooling and heating system configuration that minimizes consumption.

As described above, the conventional fish pump heating and heating device for fish farms including a fishery nursery has various problems.

Select the location of the seawater intake in accordance with the geographic location conditions, build a robust and safe water intake system according to the water intake method, purify the poor water quality of water intake efficiently and continuously supply the seawater with the proper flow rate to the heat pump air-conditioning unit,

The efficiency of the entire air-conditioning system is improved by operating eco-friendly and energy-saving heat pump air-conditioning system using sea water temperature difference by using sea water (summer 16-25 ℃ in winter, 8-16 ℃ in winter) acquired seasonally as the heat source water. ,

 In the case of supplying aquaculture water of the water temperature such as a fishery nursery, which is heated to be suitable for fish farming at the same time as heating and cooling,

Efficient energy-saving heat pump, regardless of seasonal factors, enables efficient supply of appropriate temperature seawater (aquaculture water), which is supplied to aquaculture tanks in summer as well as winter, by simultaneously using waste heat (water) discarded at aquatic nursery. There is a technical problem to configure a heating and cooling system.

The present invention was made to solve the above problems,

The seawater intake pump of the seawater intake system is installed firmly and securely to prevent damage to the intake pipe according to the geographic location conditions such as islands and inland coastal areas. The impurities are filtered and efficiently withdrawn to prevent water pollution (pretreatment intake device),

Seawater heat exchanger is used in the sea water at a certain temperature range (season 16 ~ 25 ℃, winter 8 ~ 16 ℃) which is purified and supplied by pretreatment intake device.The circulating water for heat pump heat source is indirect heat exchange method without direct contact between heat pump and seawater. After heat exchange, sea water heat is obtained (sea water heat exchanger),

By using seawater heat as a heat source for heat pumps, the fisheries nursery facility provides seasonal cooling and heating (including hot water supply) to the fishery nursery facility (heat pump air-conditioning unit) and at the same time, suitable for fish farming. Supply the fish farming water at the water temperature which is warmed to maintain a constant temperature throughout the year to the fish farming tank and discharged (farming water supply),

 In particular, the heated seawater discharged after the conventional heat exchange is not discharged as it is, but is supplied to the aquaculture tank with appropriate temperature, and the seawater (aquaculture water) discharged from the aquaculture tank is recycled to obtain heat from the new seawater heat. A fish-cycled water supply circulation cycle that supplements heat by sequentially heat-exchanging each of the waste heat heat exchanger and the reheat heat exchanger that supplies the remaining heat of the cooling / heating circulating water, and reconstructs the seawater at an appropriate temperature according to the growing conditions to the fish farming water. The purpose of the present invention is to provide a high-efficiency, energy-saving heat pump heating and cooling system capable of supplying aquaculture water (sea water) for nursery farming tanks at an environmentally appropriate temperature regardless of seasonal factors of seawater.

The heat pump air-conditioning device for fish farms using the seawater of the present invention thus obtained,

By using seawater (including underground seawater) as a heat source for heat pumps, air-conditioning and heating are carried out at fish farm facilities, such as fish farms, while minimizing heat loss due to energy conversion of seawater energy (heat pump air-conditioning unit) It is a multiple heat exchange method that continuously circulates the discharged seawater (wastewater) without using a lamp, so that heat can be obtained and discharged to meet the target calorific value, and it is heated to be suitable for fish farming. As an energy-saving and environmentally friendly heat pump air-conditioning and aquaculture water supply and cooling system that can be supplied to fish farms,

Irrespective of the seawater temperature that changes depending on the seasonal factors such as summer or winter season, it is possible to keep the aquaculture water (sea water) temperature supplied to the fish farm without any input without any deviation, so that it can be maintained throughout the year without deviation. It reduces the stress of fish such as larvae and promotes the growth of fish, which shortens the period of aquaculture and produces superior seedlings.

In addition, by filtering the impurities in the sea water to prevent corrosion or contamination of the device to improve the durability of the heat exchanger, it requires no additional heat source to keep the fish farming water temperature constant, and can use energy for inexpensive agricultural power Significantly reduced.

As a result, the present invention can actively contribute to the implementation of the climate change convention to suppress global warming by actively responding to the government policy of “low carbon green growth” project, and thereby resulting in little greenhouse gas emission, thereby improving national competitiveness.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention for achieving the above object will be described in detail with reference to the accompanying drawings, and detailed descriptions of well-known components that may unnecessarily obscure the subject matter of the present invention will be omitted.

The present invention uses a seawater intake pump 20 from the sea and seawater intake device 19 for filtering and collecting underground seawater (salt seawater) in the rock aquifer of seawater or inland coasts,

In the circulation pipe selectively formed by the switching of the plurality of three-way valve (13a, 13b) at the rear end of the seawater heat exchanger (1) and the heat pump (2) before the seawater withdrawal by the seawater intake device (19) Sea water heat exchanger (1), which heat-exchanges with air-conditioning circulation water for circulating heat pump heat source and discharges it to the sea,

Heating and cooling the circulated water preheated (precooled) at the rear end of the seawater heat exchanger (1) and supplied to the fishery nursery facility (6) through the cold / hot water supply header (7a) and the return header (7b) in multiple ways. Based on the heat pump air-conditioner circulation pipe consisting of a heat pump (2) for heating and cooling with water circulation piping, seawater is used as a heat source for air-conditioning and nursery farming tank (5) in a fishery nursery facility (6). In the heat pump air-conditioning apparatus for a fishery nursery with a combined function of simultaneously supplying the appropriately heated farming water,

On the one side of the heat pump heating and cooling device, the aquaculture water (sea water) supplied from the seawater intake device 19 is heat-exchanged with the heating and cooling circulating water for the bottom of the pump to fit the fish growth conditions, and is supplied and stored through the nursery farming tank header 8. Install nursery farming tank (5)

The rear end of the nursery culture tank (5) is a collecting tank (21) for collecting the waste sea water discharged after use in the culture tank (5) and the discharge pump (12), a filter (17) for removing foreign matter contained in the waste sea water, Wastewater heat exchanger (4) to heat the newly discharged wastewater from the discharged wastewater and the seawater intake unit (19) to heat up the wastewater, and the wastewater heated up from the wastewater heat exchanger (4) and the air-conditioning circulation pipe Forming a waste sea water circulation pipe (A) for exchanging and returning the heated and heated sea water to the nursery culture tank (5), and formed between the rear end of the sea water heat exchanger (1) and the front end of the heat pump (2) On the two horizontal heat pump heat source water circulation pipes, a plurality of three-way valves 13a and 13b are mounted on one side of the supply line and the return line, respectively, to supply the hot and cold water supply header 7a and the return header at the rear end of the heat pump 2. Between 7b and the reheat heat exchanger 3 Vertically connected to the heating and cooling water return pipe and the supply pipe on the formed heating and cooling water circulation pipe (B), respectively, and adds a vertical two-row bypass pipe for cooling and cooling water circulation between the reheat heat exchanger and the heat pump to supply supplemental heat to the heat pump. A heat pipe (heat pump cooling water, condensate) of the heat amount required for heat pump heat exchange is formed into a pipe configuration, the heat quantity circulated in the front and rear ends of the heat pump air-conditioning unit is recovered in multiple and discharged from the aquaculture tank (5) By raising the temperature of the waste water in sequence and supplying it to the aquaculture tank 5,

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Just by implementing a heat pump air-conditioning unit using sea water, it is characterized in that to recover heat from the heat pump air-conditioning circulating water multiple times sequentially, and to heat the sea water taken from the sea water intake apparatus to supply the aquaculture tank.

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

As described above, the present invention provides a seawater intake device for deeply extracting seawater from a sea or an inland coastal region at a predetermined depth away from the coast, and heating the seawater to a temperature suitable for fish growth temperature in a fish farming tank as well as heating and cooling. It is composed of a heat pump air-conditioning unit for supplying the aquaculture water (sea water), and the waste sea water circulation pipe (A) for recycling the wastewater water discharged from the aquaculture tank to supply the warmed aquaculture water (sea water) It is a system configuration in which the seawater collected is heated to a temperature suitable for fish farming and supplied to the aquaculture tank without input of additional energy required for the temperature increase.

As described above, the seawater intake device 19 uses a seawater intake structure in the form of a sea basin structure of a horizontal sump that intakes seawater through a pipeline in a sea of a predetermined depth away from the coast, and a seawater intake structure in an inland coastal region. It is divided into underground seawater well type seawater intake system of vertical well withdrawal method and selects inlet and intake method according to local characteristics.

The seawater intake device in the form of the seabed structure is different depending on the water quality of the coast as shown in Figs. 1 and 4, but foreign matters are prevented from entering the water depth of about 10m to 50m from the sea surface about 40-50m away from the shore. The water intake pipe 25 is installed, and the intake pipe which is firmly fixed to the straight pipe of the corrosion-free material is connected to the sea water intake device 19, and the sea water (sea water) collected by the Siphon principle is underwater. The seawater intake pump 20 is sucked up and pulled up to exchange heat with the heat pump air conditioning unit through the seawater heat exchanger 1.

At this time, the water intake pipe of the sea water intake device 19 and the intake port 25 at the end of the intake pipe is formed of a concrete structure to be firmly fixed to the rock, but the intake port 25 into which the strainer is inserted and mounted to the intake pipe to one side. Mounting grooves are installed to raise one end of the screen, and screen grids (nets) are installed on the outer periphery to prevent seawater from entering while permeating seawater. It is desirable to prevent entry of barnacles and the like and to filter foreign matter so as to meet the requirements for water quality use as aquaculture nursery water (see the relevant parts of FIGS. 1 and 4).

And in the pipeline type intake pipe, for example, a semicircular upper cover is firmly fixed to a lower concrete structure having a “U” shaped groove in the center so that the intake pipe can be secured by a pair of bolts and nuts. It prevents the movement of the intake pipe and the lower concrete structure is also fixed to the sea bed by using anchor bolts such as anchor bolts. It is preferable to install a strainer having a.

In addition, the seawater intake device in the form of an underground seawater well that uses a seawater intake structure in the inland coastal area, as shown in FIGS. 2 and 3, intakes underground seawater (saltwater) in which brine penetrates the groundwater in the coastal area. In the inland coastal area, install a machine room 30 in the form of a concrete structure equipped with an underground sea water intake pump, and drill an over 50m vertically and install an outer casing (STS pipe) 33 from a sand layer to a rock layer about 1m. Then, the intake pipe 32 is inserted into the outer casing 33 to the aquifer formed in the rock bed, and the underground seawater is sucked into the underground seawater intake pump 20 and sent to the seawater heat exchanger 1 for heat exchange to supply the heat pump heat source. As a constitution, the intake pipe constitution includes a normal circular pipe intake pipe 32 without perforation to a sand layer having a permeability within 5 m so that sand does not flow in. It is preferable to install by extending the perforated tube 34 perforated with a diameter of about 16mm from the rock bed layer of 5 to 50m to maintain a constant temperature throughout the year without mounting sand.

The seawater withdrawn from the seawater intake device 19 as described above is connected to the seawater heat exchanger 1 by seawater circulation pipes, so that a plurality of three-way valves 13a are provided at the rear end of the seawater heat exchanger 1 and the front of the heat pump 2. Heat exchanged with the heat and cooling circulating water for the heat pump heat source circulated in the circulation pipe selectively formed by the switching operation of the) (13b) and then discharged to the sea,

 The seawater containing the high concentration of salt taken out from the seawater intake device 19 is heat-exchanged with the cooling and heating circulating water for the heat pump heat source by indirect heat exchange without direct contact with the heat pump 2 through the seawater heat exchanger 1. The durability of the heat exchanger is improved by being protected from corrosion due to seawater containing high concentration salt such as underground seawater (salt seawater), and the seawater heat exchanger 1 is formed of titanium so as not to corrode.

 In addition, a heat pump 2 is mounted to the rear end of the seawater heat exchanger 1 to heat (cool) the cooling / heating circulation water preheated (precooled) by receiving heat from the seawater heat exchanger 1 to cool the hot and cold water supply header 7a. And through the return header (7b) to provide a heating and cooling heat to the FCU (fan coil unit) of the fishery nursery facility (6) multiple times to form a cooling and cooling water circulation pipe is returned to perform the heating and cooling of the nursery facility.

Meanwhile, a nursery farming tank 5 is installed at one side of the heat pump air-conditioning unit, and a collecting tank 21 is connected to the rear end of the nursery farming tank 5 and a discharge pipe for directly discharging waste seawater to the sea for water exchange. In addition, the discharge pump 12, the filter 17, and the wastewater heat exchanger 4 are sequentially connected to each other, and the cooling / heating circulation water heated (cooled) by the heat pump with the cold / hot water supply header 7a and the return header 7b. To the reheat heat exchanger (3) for supplying the heated and heated water to the nursery farming tank (5) by exchanging heat with the cooled and heated water that is circulated in contact with the heated and cooled water circulation pipe (B) to be returned. The waste seawater circulation pipe (A) of the closed loop connected to the pipe and returning back to the nursery farming tank (5) is formed to recycle waste seawater discharged after use as aquaculture water, as shown in FIG. (1) Heat and cooling circulating water and seawater heat exchanger for heat pump heat source circulating in a circulation pipe selectively formed by a switching operation of a plurality of three-way valves 13a and 13b at the rear end and the front end of the heat pump 2 The 3-way valve 13 is installed in the middle of the return pipe of the seawater circulation pipe discharged from the heat exchanger and discharged into the nursery farming tank 5 to replace the hot water stream through the farming tank header 8 and the gate valve 15. The seawater bypass pipe for supplying the aquaculture water is additionally formed to supply heat to the nursery aquaculture tank 5 multiplely.

In this case, the filter 17 filters the foreign matter contained in the seawater, and the wastewater heat exchanger 4 exchanges heat with the freshly introduced seawater, obtains heat, and operates the check valve CV to raise the temperature to reheat the heat exchanger. It continues to flow to the machine (3), the electronically operated solenoid valve (SV) is mounted on the circulation pipe of the fresh water raw water newly supplied to the wastewater heat exchanger (4), the operation of the solenoid valve (SV) By selectively mixing seawater and wastewater, the re-heated heat exchanger (3) is pumped and supplied with the dissolved oxygen water, which is further enriched for the aquaculture fish culture.

The check valve CV is operated so that the heat flows in only one direction without the backflow of the seawater in the opposite direction, so that the waste water can be smoothly circulated.

On the other hand, on the horizontal two-row heat pump heat source water circulation pipe formed between the rear end of the seawater heat exchanger 1 and the front end of the heat pump 2, a plurality of three-way valves 13a and 13b are provided on one side of the supply line and the return line. Each of the three-way valves (13a) and (13b) is mounted, and the heating and cooling water circulation pipe (B) supplied and returned from the cold / hot water supply header (7a) and the return header (7b) for heat exchange with the reheat heat exchanger (3). An additional two rows of bypass pipes are vertically connected to the heating and cooling water return pipe and the supply pipe respectively.

In addition, by maintaining a constant pressure between the hot and cold water supply header (7a) and the return header (7b) between the cold and hot water supply and the return header to the differential pressure valve 16 to maintain a constant flow rate of hot water supplied to each branch pipe It is installed.

The upper horizontal two-row heat pump heat source water circulation pipe provided between the seawater heat exchanger and the heat pump equipped with the three-way valves 13a and 13b, the cold / hot water supply header 7a, and the return header 7b, respectively. Circulation pump (10) below the three-way valve (13b) of the vertical two-row bypass pipe connected to the reheat heat exchanger (3) to vertically connect the lower heating and cooling water circulation pipe (B) for supplying and returning heating and cooling water. ) Is installed, and a plurality of solenoid valves 14 are respectively installed on the upper and lower sides of the lower cooling / heating water circulation pipe (B) to perform the function of opening / closing the flow of cooling / heating water, and the cold / hot water supply header 7a and the return header 7b. In the middle of the cooling / cooling water supply pipe (B) connected to the cold / hot water supply pipe (7a), the heating and cooling water supply pipe (7a) is provided with a drain pipe solenoid valve (22), and a drain pipe connected to the drainage line is formed. On By being connected air-exchange can be provided with a tubing, the expansion tank 23 to prevent the thermal stress caused by thermal expansion of the water supply pipe connection, respectively,

  The heating and cooling water circulation line (B) is selectively formed between the reheat heat exchanger (3) and the heat pump (2) by the opening and closing action of the solenoid valve (14) on the upper and lower sides of the heating and cooling circulation pipe (B). It consists of a pipe to supply heat exchange water (heat pump cooling water, condensate) at the temperature required for heat exchange.Cooling and cooling water circulates only the closed circuit to adjust the air-conditioning and cooling water supply temperature according to the summer and winter air-conditioning operation conditions, and the heat exchanger supplied to the heat pump. The heat pump cooling and heating system operation efficiency is improved by appropriately adjusting the difference between the inflow and outflow temperature of water. Especially in winter heating operation, the ratio of the mixing of cold water and hot water by discharging hot water being returned to the drain pipe and supplying cold water to the water supply pipe. Control to adjust the output temperature to the set target temperature.

As a result, the present invention heats and raises the aquaculture water (sea water) with the heating and cooling circulating water for the bottom of the pump to fit the growth conditions of fish in the process of performing the heat-cooling operation of a wide temperature range according to the seasonal seawater temperature of each region and supplies it to the nursery aquaculture tank. And at the same time, the energy is adjusted to give and receive multiple heats to compensate for the difference in temperature, and the heat pump can be stably supplied to the heat pump within the proper temperature range required for heat exchange to improve the overall cooling and heating system operating efficiency (COP). The configuration is characterized by.

In addition, since the temperature control range of the cultured water temperature of the nursery is not large, it is possible to precisely control the temperature with the heat pump system, and the system of the present invention preferably applies a precise control method using a microprocessor to precisely control the temperature and minimize the deviation. Do.

For example, when the cooling operation during summer, seawater or underground seawater is taken from the sea or inland coastal region of a predetermined depth away from the coast by the seawater intake unit 19, and the seawater having a predetermined temperature of water taken from the seawater heat exchanger (1) Heat pump (2) exchanges heat with heat pump heat medium (circulating water) and discharges it into the sea, and heat pump (2) heat-exchanges with sea water to provide cooling heat to the fishery nursery facility (6) and implement a cooling cycle for returning. (Heat pump cooling process). Meanwhile, the seawater is transferred to the heat pump circulating water by the seawater heat exchanger 1, and the seawater circulated in the elevated temperature is not immediately discharged by the three-way valve 13, and the flow direction is changed, so that the fry in the nursery aquaculture tank 5. The growth temperature is supplied to the cultured water (sea water) at a temperature appropriate to the growth temperature (seawater fish cultured water supply process after heat exchange). And the waste sea water discharged from the nursery culture tank (5) is collected in the sump tank 21 to be discharged, the waste sea water that is not maintained at a constant temperature in the sump tank 21 is immediately discharged into the sea, the sump tank 21 Waste seawater maintained at a constant temperature in the c) is pressurized by the discharge pump 12 to remove the suspended matter by the filter 17, and the wastewater heat exchanger (4) through the heat passing through the sea is discharged. On the other hand, if the temperature of the aquaculture tank (5) is constant, the seawater intake pump 20 implements a separate seawater circulation cycle via the waste heat heat exchanger (4), but the seawater circulated in the wastewater circulation pipe (A) is a cold and hot water supply header (7a) and the heat and circulation circulation water circulated to the reheat heat exchanger (3) and the cooling and heating water circulation pipe (B) formed from the return header (7b) and heat exchange in the reheat heat exchanger (3) to obtain heat to form a culture tank (5). (Waste heat recovery fish farming water supply process). The three-way valves 13a and 13b are mounted on the pipes, respectively, and the upper horizontal two-row heat pump heat source water circulation pipe and the cold / hot water supply header 7a provided between the seawater heat exchanger 1 and the heat pump 2 are provided. And the closed circuit between the reheat heat exchanger (3) and the heat pump (2) formed by two vertical rows of bypass pipes vertically connecting the lower heating and cooling water circulation pipe (B) connected to the return header (7b). As the circulating water circulates, the heat of cooling is generated in the heat pump (2) and supplied to the nursery facility (6). The heat pump is used to supply fish farming water and cool the nursery, while at the same time recovering the waste heat contained in the waste seawater, The seawater heated to a temperature suitable for fish farming is supplied to the aquaculture tank 5 without input of additional energy.

In the case of the summer cooling operation mode, as shown in FIG. 1, in case of Jeju Island which maintains the annual seawater temperature of 16 ° C., the seawater discharged to 21 ° C. after heat exchange with seawater can be supplied directly to the farmed water, but is shown in FIG. 2. As mentioned above, inland coastal areas such as Gyeongnam, Jeonnam, and Namhae, when relatively low temperature seawater maintained at winter temperatures of 8-9 ° C and summer temperatures of 10-11 ° C is used for heat pump cooling and heating, Seawater should be discharged to the sea as is.

In addition, in the winter heating operation mode, the seawater or underground seawater is collected by the seawater intake device (19) from the sea or the inland coastal region of a predetermined depth away from the coast, and the seawater having a predetermined temperature is sent to the seawater heat exchanger (1). With heat exchanged with the pump heat medium (circulating water) and discharged to the sea, and circulating between the seawater heat exchanger (1) and the heat pump (2), the heat pump performs heating and the cold and hot water supply header (7a) and the return header ( b) to supply heating heat to the fisheries nursery facility 6 and the reheat heat exchanger 3 and to implement a heating cycle in which the water is returned (heat pump heating process).

Meanwhile, the seawater heat exchanger 1 transfers heat to the heat and cooling circulating water for the heat pump circulating between the seawater heat exchanger 1 and the heat pump 2, and the seawater circulated in the reduced temperature is discharged directly to the sea. Desuperheated seawater after heat exchange)

Meanwhile, the seawater pressurized by the seawater intake pump 20 is filtered through the filter 17 from the water collection tank 21 to the discharge pump 12 and combined with the wastewater via the waste heat heat exchanger 4 to circulate. The seawater is heat-exchanged with the heating heat sent from the heat pump (2) in the reheat heat exchanger (3) to supply the heated seawater to the aquaculture tank (waste heat recovery fish farming water supply process).

At this time, when the temperature of the aquaculture tank 5 is kept constant, the solenoid valve 14 on the cooling / heating water circulation pipe that is supplied and returned from the cold / hot water supply and return headers 7a and 7b is turned off and the reheat heat exchanger. (3) The drain pipe solenoid valve 22 connected to the supply pipe is opened to discharge the heating water to the drain.

 Then, by supplying water (direct water) to the cooling and heating water return pipe from the expansion tank 23 connected to the water supply pipe, the existing high temperature heating water is discharged and the appropriate temperature suitable for heat exchange in the heat pump 2 by mixing cold water. By supplying the heating water adjusted to the heat pump (2) to minimize the temperature difference according to the elevated temperature to increase the heat pump system efficiency.

  At this time, the drain pipe solenoid valve 22 is turned off when water of a constant temperature is filled in the pipe, and a plurality of three-way valves 13a and 13b between the seawater heat exchanger 1 and the heat pump 2 are provided. It is operated and the circulating ice water is circulated between the reheat heat exchanger (3) and the heat pump (2).

Therefore, the seawater heat exchanger (1) no longer performs heat exchange, and prevents the heat pump system compression efficiency loss due to the difference between the hot water temperature required for heating operation and the seawater temperature, and supplies the heated water of the supplied temperature to the heat pump so as to be suitable for elevated temperature. To improve the efficiency of the system.

As described above, the air-conditioning mode and the hot water supply operation of the present invention are year-round seawater intake temperature of 16 ° C. in the case of Jeju Island, winter temperature 8-9 ° C., summer temperature 10-11 ° C. in the inland coastal area, and cooling operation temperature 12 → 7 ° C. Is a system configuration that targets the heating operation temperature of 30 → 35 ℃ and the fish farming water supply temperature to 21 ℃.

In particular, in winter, low-temperature seawater can be heated and supplied by replacing the oil boiler with a suitable temperature for the aquaculture tank, and the temperature rise is small, improving the system efficiency and significantly reducing the energy cost compared to the diesel boiler system.

As a result, the present invention has the effect of satisfying both energy saving and high efficiency use of energy and pollution prevention and economic efficiency by generating temperature difference energy utilizing seawater which is unutilized energy.

Reference numeral 9 is a circulation pump, 10 is a cooling and heating circulation pump.

       The present invention described above is not limited to the above-described embodiment as various substitutions and changes can be made by those skilled in the art without departing from the technical spirit of the present invention. .

       1 is a system configuration diagram schematically showing the configuration of the entire heat pump air-conditioning system applied to the case of Jeju Island maintaining the year-round seawater temperature of 16 ℃ of the present invention

       Figure 2 is a schematic diagram showing the overall configuration of the heat pump air-conditioning system applied to the case of inland coastal areas, such as Gyeongnam, Jeonnam, Namhae

Figure 3 is a schematic diagram showing an embodiment of the underground seawater well intake device of the present invention

Figure 4 is a schematic view showing a schematic structure of the subsea structure intake device of the horizontal collection well of the present invention

Description of the Related Art

1: Sea water heat exchanger 2: Heat pump

3: reheat heat exchanger 4: wastewater heat exchanger

5: Aquaculture tank 6: Nursery facility

7a: Cold and hot water supply header 7b: Cold and hot water return header

9: circulation pump 10: cooling and heating circulation pump

11: Cold / hot water circulation pump 12: Discharge pump

13: 3-way valve 14: solenoid valve

15: gate valve 16: differential pressure valve

17: filter

19: seawater intake device 20: seawater intake pump

21: collection tank 22: drain pipe solenoid valve

23: expansion tank 25: water intake

30: Machine room

31: Manhole 32: Water pipe

33: outer casing 34: other hole

SV: Solenoid valve CV: Check valve
A: waste seawater circulation piping
B: HVAC circulation pipe

Claims (5)

 A seawater intake device 19 for filtering underground seawater (saltwater) from seawater or rock bed aquifers on inland coasts using seawater intake pumps 20 from the sea, In the circulation pipe selectively formed by the switching of the plurality of three-way valve (13a, 13b) at the rear end of the seawater heat exchanger (1) and the heat pump (2) before the seawater withdrawal by the seawater intake device (19) Sea water heat exchanger (1), which heat-exchanges with air-conditioning circulation water for circulating heat pump heat source and discharges it to the sea, Heating and cooling the circulated water preheated (precooled) at the rear end of the seawater heat exchanger (1) and supplied to the fishery nursery facility (6) through the cold / hot water supply header (7a) and the return header (7b) in multiple ways. Based on the heat pump air-conditioner circulation pipe consisting of a heat pump (2) for heating and cooling with water circulation piping, seawater is used as a heat source for air-conditioning and nursery farming tank (5) in a fishery nursery facility (6). In the heat pump air-conditioning apparatus for a fishery nursery with a combined function of simultaneously supplying the appropriately heated farming water, On the one side of the heat pump heating and cooling device, the aquaculture water (sea water) supplied from the seawater intake device 19 is heat-exchanged with the heating and cooling circulating water for the bottom of the pump to fit the fish growth conditions, and is supplied and stored through the nursery farming tank header 8. Install nursery farming tank (5) The rear end of the nursery culture tank (5) is a collecting tank (21) for collecting the waste sea water discharged after use in the culture tank (5) and the discharge pump (12), a filter (17) for removing foreign matter contained in the waste sea water, Wastewater heat exchanger (4) to heat the newly discharged wastewater from the discharged wastewater and the seawater intake unit (19) to heat up the wastewater, and the wastewater heated up from the wastewater heat exchanger (4) and the air-conditioning circulation pipe Forming a waste seawater circulation pipe (A) for supplying the heated seawater to the nursery aquaculture tank (5) by exchanging heat with the cooling and heating water, On the horizontal two-row heat pump heat source water circulation pipe formed between the rear end of the seawater heat exchanger 1 and the front end of the heat pump 2, a plurality of three-way valves 13a and 13b are provided on one side of the supply line and the return line, respectively. Vertically to the cooling and heating water return pipe and the supply pipe on the cooling and cooling water circulation pipe (B) formed between the cold and hot water supply header (7a) and the return header (7b) and the reheat heat exchanger (3) after the heat pump (2). Connected to the reheat heat exchanger (3) and the heat pump (2) to form additional two rows of bypass pipes for supplying heat to the heat pump (2) to supply heat to the heat pump (2) by A piping configuration for supplying heat exchange water (heat pump cooling water and condensate water), wherein the amount of heat circulating in the front and rear ends of the heat pump cooling and heating system is recovered in multiple times, and the waste sea water discharged from the aquaculture tank 5 is also heated in multiple times. By supplying to form the tank (5), Heat pump air conditioning system for aquatic nursery using sea water, characterized by supplying aquaculture tanks with heated sea water to aquaculture tanks simultaneously with the implementation of heat pump air conditioning system using sea water The seawater intake device is a horizontal sump that takes in seawater through a pipeline in a sea of a predetermined depth away from the coast, and has a foreign object at a depth of about 10m to 50m at sea level 40 to 50m away from the shore. The intake pipe 25 is installed to prevent the inflow, and the intake pipe in which the straight pipeline of the material free of corrosion is fixed is connected to the sea water intake device 19, and the seawater (sea water) collected by the siphon principle (sea water) ) A water pump heating and heating device for aquatic nursery using seawater, which is a subsea structure intake device that sucks and pulls up into an underwater seawater intake pump 20 According to claim 1, the seawater intake device is installed in the inland coastal area with a concrete structure-type machine room 30 is equipped with an underground seawater intake pump and drilled more than 50m vertically to the outer casing (STS pipe) from the sand layer to 1m rock bed ( 33) and then to the permeable sand layer within 5 m into the outer casing, a normal circular pipe intake pipe 32 without perforation is installed, and from 5 to 50 m rock layer where sand does not enter and maintains a constant temperature throughout the year. Heat pump heating and heating device for fisheries nursery using seawater, which is an underground seawater well intake device for extending and installing perforated pipes 34 with a diameter of 16 mm The return pipe of the seawater circulation pipe according to claim 1, wherein the seawater intake unit 19 and seawater are collected to transfer heat to the heat pump 2, heat exchange with the cooling and heating circulation water, and then discharge into the sea. Is installed in the seawater bypass pipe to convert the heated seawater flow into the nursery farming tank (5) and supply it to the farming water. The cold / hot water supply header (7a) according to claim 1, wherein the cold / hot water supply header (7a) formed between the cold / hot water supply header (7a) and the return header (7b) and the reheat heat exchanger (3) after the heat pump (2). The connected cooling and heating water supply pipe is provided with a drain pipe solenoid valve 22 and a drain pipe is connected to the drainage path, and the expansion and cooling tank 23 prevents thermal stress due to thermal expansion in the cooling and cooling water return pipe connected to the cold / hot water return header 7b. Each water supply pipe is equipped with a heat pump cooling and heating device for fisheries nursery using sea water, characterized in that for supplying heat pump by controlling the heat quantity of the cooling and heating circulation water

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