CN205825425U - A kind of energy-efficiency Type Hot Water Heating System - Google Patents
A kind of energy-efficiency Type Hot Water Heating System Download PDFInfo
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- CN205825425U CN205825425U CN201620739439.0U CN201620739439U CN205825425U CN 205825425 U CN205825425 U CN 205825425U CN 201620739439 U CN201620739439 U CN 201620739439U CN 205825425 U CN205825425 U CN 205825425U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 577
- 238000010438 heat treatment Methods 0.000 title claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 78
- 238000004321 preservation Methods 0.000 claims description 100
- 230000005611 electricity Effects 0.000 claims description 23
- 238000006073 displacement reaction Methods 0.000 claims description 16
- 238000005457 optimization Methods 0.000 claims description 14
- 239000008236 heating water Substances 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 239000000779 smoke Substances 0.000 abstract description 5
- 239000008400 supply water Substances 0.000 description 6
- 230000003020 moisturizing effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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Abstract
This utility model provides a kind of energy-efficiency Type Hot Water Heating System, and energy-efficiency Type Hot Water Heating System includes: air source hot pump water heater unit, is connected with water supply tank by the first water pump；Attemperater, including at least one temperature sensor and at least one liquid level sensor, connects with air source hot pump water heater unit；Optimal controller, is connected with air source hot pump water heater unit and attemperater respectively；Inlet pipeline, inlet pipeline is connected with attemperater by the 3rd water pump；Outlet pipeline, outlet pipeline is connected with attemperater.The energy-efficiency Type Hot Water Heating System provided by this utility model, solve and prior art uses steam boiler hot-water heating system have that system effectiveness is relatively low, energy consumption is higher when supplying water, need to carry out boiler water process, add the expense that water processes, and steam boiler blowdown, the smoke evacuation problem to environment；And when using air-source heat pump hot water system, under extreme weather, there is the problem that heat supply is not enough.
Description
Technical Field
The utility model relates to a hot water system especially relates to an energy-saving hot water system.
Background
The building is one of the most energy consuming households in China, and the daily operation energy consumption of the building accounts for about one fourth of the total energy consumption in China. In 2003-2011, the output value of the building energy-saving service industry in China is increased from 5.58 million yuan to 441.96 million yuan, and the composite growth rate in the period reaches 72.72%; the energy investment amount of the building energy-saving contract is increased from 2.01 million yuan to 38.01 million yuan, and the corresponding composite increase rate is about 44.41 percent. The output value of the energy-saving building industry in 2012 reaches 552.2 billion yuan; the energy investment amount of the building energy-saving contract reaches 68.88 hundred million yuan, and the contract increases about 81 percent on a year-by-year basis.
As a main energy consumption system, in a building hot water system, a steam boiler hot water system is generally applied as a mature technology by owners; the steam boiler is a thermal equipment which transfers the heat energy released by fuel combustion or the waste heat in industrial production to the water in a container to make the water reach the required temperature or a certain pressure, after the water enters the boiler, the heat absorbed by the boiler heating surface in the steam-water system is transferred to the water to make the water heated into hot water with a certain temperature and pressure or generate steam, and the hot water is led out for application.
However, with the updating of heating and ventilation equipment technology, the air source heat pump water heater is used as a novel water heating device, the market occupation degree is higher and higher, the water heating efficiency of the air source heat pump water heater is 3-4 times that of a conventional steam boiler, and therefore the air source heat pump water heater is widely applied to the existing building energy-saving transformation. However, the newly-added air source heat pump water heater is difficult to meet the requirement of hot water in winter extreme weather due to the limitation of outdoor environmental factors, and a steam boiler cannot be comprehensively replaced in some building hot water systems with more water requirements in order to ensure the safety of hot water supply.
As shown in fig. 1, fig. 1 is a conventional hot water system of a steam boiler, in which steam is generated from the steam boiler, secondary water is heated by a positive displacement heat exchanger, and the secondary water circulates between the positive displacement heat exchanger and a water-using end, thereby satisfying the end water-using demand. Although the existing steam boiler can ensure the safety of hot water supply, the following disadvantages exist: 1) the steam boiler system has low efficiency and high energy consumption; 2) boiler water treatment is required, and the cost of water treatment is increased; 3) the pollution to the environment is caused by the pollution discharge and smoke discharge of the steam boiler.
In view of the above, there is a need to design a new energy-saving hot water system to solve this problem.
SUMMERY OF THE UTILITY MODEL
In view of the above disadvantages of the prior art, the present invention provides an energy-type hot water system, which is used for solving the problems of low system efficiency and high energy consumption when a steam boiler hot water system is used for supplying water in the prior art; boiler water treatment is required, and the cost of water treatment is increased; and the pollution to the environment caused by the pollution discharge and smoke discharge of the steam boiler; and when the air source heat pump water heater system is used, the problem of insufficient heat supply exists in extreme weather.
To achieve the above and other related objects, the present invention provides an energy-saving hot water system, which is connected between a replenishing tank and a water supply terminal, the energy-saving hot water system comprising:
the air source heat pump water heater unit is connected with the water replenishing tank through a first water pump and is used for heating water in the air source heat pump water heater unit;
the heat preservation water tank is directly communicated with the air source heat pump water heater unit and comprises at least one temperature sensor and at least one liquid level sensor, and the heat preservation water tank is also communicated with the air source heat pump water heater unit through a second water pump and is used for preserving heat of hot water flowing out of the air source heat pump water heater unit and storing the hot water, collecting the temperature of water in the heat preservation water tank through the temperature sensor and collecting the liquid level of the water in the heat preservation water tank through the liquid level sensor;
the optimization controller is respectively connected with the air source heat pump water heater unit and the heat preservation water tank and is used for controlling the operation of the air source heat pump water heater unit according to the temperature, the liquid level and the time-of-use electricity price of water in the heat preservation water tank;
the water inlet pipeline is connected with the heat preservation water tank through a third water pump and used for supplying water to the tail end of water;
and the water outlet pipeline is connected with the heat preservation water tank and is used for transferring the water at the tail end of the used water back to the heat preservation water tank.
Preferably, the energy saving hot water system includes a direct heating mode and a circulation mode; wherein,
when the air source heat pump water heater unit is directly communicated with the heat preservation water tank, the air source heat pump water heater unit is in a direct heating mode, the water replenishing tank supplies water to the air source heat pump water heater unit through the first water pump, and the air source heat pump water heater unit heats the water and then transmits the water to the heat preservation water tank;
and when the heat-preservation water tank is communicated with the air source heat pump water heater unit through the second water pump, the circulation mode is that the heat-preservation water tank supplies water to the air source heat pump water heater unit through the second water pump, and the air source heat pump water heater unit heats the water and then transmits the water to the heat-preservation water tank.
Preferably, the number of the temperature sensors is 5.
Preferably, the temperature of the water in the holding water tank is an average value measured by 5 sensors.
Preferably, the number of the liquid level sensors is 1.
Preferably, the first, second and third water pumps are all constant pressure water supply pumps.
Preferably, the heat preservation water tank further comprises a drain valve, and the drain valve is positioned at the bottom of the heat preservation water tank.
Preferably, the water inlet pipeline further comprises a first gate valve connected between the water using end and the third water pump for controlling the opening and closing of the water inlet pipeline.
Preferably, the water outlet pipeline further comprises a second gate valve connected between the water using end and the heat preservation water tank and used for controlling the opening and closing of the water outlet pipeline.
The utility model also provides a two hot-water heating system, two hot-water heating system connect between moisturizing case and water end, including steam boiler hot-water heating system and energy-saving hot-water heating system, two hot-water heating system each other are standby system.
Preferably, the energy saving type hot water system includes:
the air source heat pump water heater unit is connected with the water replenishing tank through a first water pump and is used for heating water in the water replenishing tank;
the heat preservation water tank is directly communicated with the air source heat pump water heater unit and comprises at least one temperature sensor and at least one liquid level sensor, and the heat preservation water tank is also communicated with the air source heat pump water heater unit through a second water pump and is used for preserving heat of hot water flowing out of the air source heat pump water heater unit and storing the hot water, collecting the temperature of water in the heat preservation water tank through the temperature sensor and collecting the liquid level of the water in the heat preservation water tank through the liquid level sensor;
the optimization controller is respectively connected with the air source heat pump water heater unit and the heat preservation water tank and is used for controlling the operation of the air source heat pump water heater unit according to the temperature, the liquid level and the time-of-use electricity price of the heat preservation water tank;
the first water inlet pipeline is connected with the heat preservation water tank through a first gate valve and a third water pump and is used for supplying water to the tail end of water;
and the first water outlet pipeline is connected with the heat preservation water tank through a second gate valve and is used for transmitting the water at the tail end of the used water back to the heat preservation water tank.
Preferably, the steam boiler hot water system comprises:
the steam boiler is used for generating steam and heating water in the steam boiler;
the positive displacement heat exchanger is connected with the steam boiler and is used for secondarily heating the water flowing into the positive displacement heat exchanger from the steam boiler;
the second water inlet pipeline is connected with the water using tail end through a fourth gate valve and used for supplying water to the water using tail end;
and the second water outlet pipeline is connected with the positive displacement heat exchanger through a fifth gate valve and a fourth water pump and is used for transmitting the water at the tail end of the used water back to the positive displacement heat exchanger.
Preferably, the energy saving hot water system is started by closing the first gate valve and the second gate valve.
Preferably, the steam boiler hot water system is started by closing the third, fourth and fifth gate valves.
Preferably, the fourth water pump is a constant pressure water supply pump.
As described above, the utility model discloses an energy-saving hot water system has following beneficial effect:
1. the energy-saving hot water system of the utility model controls the economical and energy-saving operation of the air source heat pump water heater unit through the optimization controller according to the water temperature, the liquid level and the time-of-use electricity price, thereby not only having high comprehensive energy efficiency, but also reducing the energy cost of hotels;
2. the air source heat pump water heater unit belongs to normal-pressure, environment-friendly and pollution-free equipment, has high safety performance, does not need water treatment, and does not cause pollution to the environment;
3. the utility model also provides a double hot water system shared by the steam boiler hot water system and the energy-saving hot water system, and the two hot water systems are mutually standby, thereby not only solving the problems that the steam boiler hot water system has lower efficiency and higher energy consumption, needs to carry out boiler water treatment, increases the cost of water treatment, and pollutes the environment by the pollution discharge and smoke discharge of the steam boiler; and the problem that the air source heat pump water heater is difficult to meet the hot water requirement in extreme weather is solved.
Drawings
Fig. 1 is a schematic view showing a steam boiler hot water system in the prior art.
Fig. 2 is a schematic view of the energy-saving hot water system of the present invention.
Fig. 3 is a schematic view of the dual hot water system of the present invention.
Fig. 4 shows a schematic diagram of the optimization controller controlling the air source heat pump water heater unit by using the temperature sensor and the liquid level sensor.
Fig. 5 is a flow chart of a method for implementing the energy-saving hot water system of the present invention.
Description of the element reference numerals
V actual liquid level
VLLowest liquid level
VMIntermediate liquid level
VHMaximum liquid level
T actual temperature
TLMinimum supply water temperature
TZStandard water supply temperature
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
Please refer to fig. 2 to 5. It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the invention in a schematic manner, and only the components related to the invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.
Example one
As shown in fig. 2, the utility model provides an energy-saving hot water system, energy-saving hot water system connects between moisturizing case and water end, energy-saving hot water system includes:
the air source heat pump water heater unit is connected with the water replenishing tank through a first water pump and is used for heating water in the air source heat pump water heater unit;
the heat preservation water tank is directly communicated with the air source heat pump water heater unit and comprises at least one temperature sensor and at least one liquid level sensor, and the heat preservation water tank is also communicated with the air source heat pump water heater unit through a second water pump and is used for preserving heat of hot water flowing out of the air source heat pump water heater unit and storing the hot water, collecting the temperature of water in the heat preservation water tank through the temperature sensor and collecting the liquid level of the water in the heat preservation water tank through the liquid level sensor;
the optimization controller is respectively connected with the air source heat pump water heater unit and the heat preservation water tank and is used for controlling the operation of the air source heat pump water heater unit according to the temperature, the liquid level and the time-of-use electricity price of water in the heat preservation water tank;
the water inlet pipeline is connected with the heat preservation water tank through a third water pump and used for supplying water to the tail end of water;
and the water outlet pipeline is connected with the heat preservation water tank and is used for transferring the water at the tail end of the used water back to the heat preservation water tank.
It should be noted that the air source heat pump water heater unit is an energy-saving and environment-friendly hot water supply device which is not limited by resources, heat in air is transported to water by adopting a green pollution-free refrigerant, the traditional electric water heater and the gas water heater obtain heat energy by consuming gas and electric energy, the air source water heater achieves the purpose of heating water by absorbing the heat in the air, and the heat energy equivalent to about three times of the electric energy can be absorbed to heat water under the condition of consuming the same electric energy.
It should be noted that the temperature of the water in the heat-preservation water tank is collected by the temperature sensors, and when the number of the temperature sensors is 1, the temperature value measured by the temperature sensors is the temperature value of the water in the heat-preservation water tank at the moment; when the number of the temperature sensors is more than or equal to 2, the average value measured by the plurality of temperature sensors is the temperature value of the water in the heat preservation water tank at the moment. Because the temperature of the water in different positions in the heat preservation water tank has non-uniformity, the more the number of the temperature sensors arranged in the heat preservation water tank is, the more accurate the actual temperature of the water in the heat preservation water tank is acquired. Preferably, in the present embodiment, the number of the temperature sensors is 5; the temperature of the water in the heat-preservation water tank is T1, T2, T3, T4 and T5 which are respectively collected by the 5 temperature sensors, and the actual temperature T of the water in the heat-preservation water tank is calculated by the optimization controller to be (T1+ T2+ T3+ T4+ T5)/5.
It should be noted that the liquid level of the water in the heat-preservation water tank is collected by the liquid level sensor, and when the number of the liquid level sensors is 1, the liquid level value measured by the liquid level sensor is the liquid level of the water in the heat-preservation water tank at the moment; when the number of the liquid level sensors is more than or equal to 2, the average value measured by the plurality of liquid level sensors is the liquid level value of the water in the heat preservation water tank at the moment. Preferably, in the present embodiment, the number of the liquid level sensors is 1.
Specifically, the energy-saving hot water system comprises a direct heating mode and a circulation mode; wherein,
when the air source heat pump water heater unit is directly communicated with the heat preservation water tank, the air source heat pump water heater unit is in a direct heating mode, the water replenishing tank supplies water to the air source heat pump water heater unit through the first water pump, and the air source heat pump water heater unit heats the water and then transmits the water to the heat preservation water tank;
and when the heat-preservation water tank is communicated with the air source heat pump water heater unit through the second water pump, the circulation mode is that the heat-preservation water tank supplies water to the air source heat pump water heater unit through the second water pump, and the air source heat pump water heater unit heats the water and then transmits the water to the heat-preservation water tank.
Specifically, the heat preservation water tank further comprises a drain valve, and the drain valve is located at the bottom of the heat preservation water tank and used for discharging water in the heat preservation water tank.
The water inlet pipeline further comprises a first gate valve, and the first gate valve is connected between the tail end of the water utilization device and the third water pump and used for controlling the opening and closing of the water inlet pipeline; the water outlet pipeline also comprises a second gate valve which is connected between the water using end and the heat preservation water tank and used for controlling the switch of the water outlet pipeline.
Specifically, the first, second and third water pumps are all constant-pressure water supply pumps.
The method for implementing the energy-saving hot water system of the present invention is described with reference to fig. 3 and 4.
As shown in fig. 3 and 4, the present invention further provides a method for implementing an energy-saving hot water system, where the method includes: the water replenishing tank supplies water for the air source heat pump water heater unit through the first water pump, the air source heat pump water heater unit heats water and sends the water into the heat preservation water tank, the heat preservation water tank sends the water into the water end through the third water pump and the water inlet pipeline, the water end sends the water back to the heat preservation water tank through the water outlet pipeline, the optimization controller controls the air source heat pump water heater unit according to the temperature, the liquid level and the time-of-use electricity price of the water in the heat preservation water tank, and the economical and energy-saving operation is achieved.
It should be noted that, because time-of-use electricity price charging standards are implemented in all regions at present, the optimization controller controls the economic operation of the air source heat pump water heater unit according to the time-of-use electricity price condition on the premise of ensuring the liquid level and the temperature of water in the heat preservation water tank. Namely:
at the valley period, the liquid level of the water in the heat-insulating water tank is more than or equal to the highest liquid level VHTemperature is greater than or equal to standard water supply temperature TZ；
At ordinary time, the liquid level of the water in the heat-insulating water tank is at the lowest liquid level VLAnd the intermediate liquid level VMAt a minimum feed water temperature TLAnd the standard water supply temperature TZTo (c) to (d);
at peak time, the level of water in the holding water tankNot lower than the lowest liquid level VLAt a temperature not lower than the minimum water supply temperature TLAnd (4) finishing.
It should be further noted that, in any period of time, the liquid level of the water in the heat preservation water tank is lower than the lowest liquid level VLThen immediately starting the air source heat pump water heater unit, and adopting a direct heating mode to raise the liquid level of water in the heat-insulating water tank to the lowest liquid level VL。
It should be further noted that, in any period of time, as long as the temperature of the water in the heat-preservation water tank is lower than the low water supply temperature TL, the air source heat pump water heater unit is started immediately, and the water in the heat-preservation water tank is heated up in a circulation mode according to the current time-of-use electricity price condition.
Specifically, the method for realizing economic and energy-saving operation by the optimization controller comprises the following steps:
1) obtaining the actual liquid level V of the water in the heat-preservation water tank according to the measurement of the liquid level sensor, and judging whether the actual liquid level V is less than the lowest liquid level V or notLIf the actual level V is less than the minimum level VLThen the liquid level is raised to the lowest liquid level V by adopting a direct heating modeLIf the actual level V is greater than or equal to the minimum level VLJudging the time-of-use electricity price;
2) judging whether the time-of-use electricity price is in a valley period or not, and if the time-of-use electricity price is in the valley period, judging whether the actual temperature T of the water in the heat preservation water tank measured by the temperature sensor is more than or equal to the standard water supply temperature T or notZIf the actual temperature T is greater than or equal to the standard water supply temperature TZThen the liquid level is raised to the highest liquid level V by adopting a direct heating modeHIf the actual temperature T is less than the standard water supply temperature TZThen judging whether the actual temperature T is greater than the minimum water supply temperature TLAnd is less than the standard water supply temperature TZIf the actual temperature T is greater than or equal to the minimum water supply temperature TLAnd is less than the standard water supply temperature TZThen judge whether the actual liquid level V is greater than or equal to the highest liquid level VHIf the actual level V is greater than or equal to the maximum level VHThen adopt the cycleHeating in a ring mode to raise the temperature to the standard water supply temperature TZIf the actual level V is less than the maximum level VHThen the liquid level is raised to the highest liquid level V by adopting a direct heating modeHIf the actual temperature T is less than the minimum supply water temperature TLThen judge whether the actual liquid level V is greater than or equal to the highest liquid level VHIf the actual level V is greater than or equal to the maximum level VHThen the temperature is raised to the standard water supply temperature T by adopting a circulation modeZIf the actual level V is less than the maximum level VHThen the liquid level is raised to the highest liquid level V by adopting a direct heating modeHAnd the temperature rises to the standard water supply temperature TZIf the time-of-use electricity price at the moment is not the valley period, continuing to judge the time-of-use electricity price;
3) judging whether the time-of-use electricity price is in the ordinary time period or not, and if the time-of-use electricity price is in the ordinary time period, judging whether the actual temperature T is less than the lowest water supply temperature T or notLIf the actual temperature T is less than the minimum supply water temperature TLThen the temperature is raised to the lowest water supply temperature T by adopting a circulation modeLIf the actual temperature T is greater than or equal to the minimum water supply temperature TLThen judging whether the actual temperature T is less than the standard water supply temperature TZIf the actual temperature T is less than the standard water supply temperature TZThen judge whether the actual liquid level V is less than the middle liquid level VMIf the actual level V is less than the intermediate level VMThen the liquid level is raised to the middle liquid level V by adopting a direct heating modeMIf the actual level V is greater than or equal to the intermediate level VMEntering standby state, if the actual temperature T is greater than or equal to the standard water supply temperature TZEntering standby, and if the time-of-use electricity price at the moment is not the flat time interval, judging that the time-of-use electricity price at the moment is the peak time interval;
4) if the time-of-use electricity price is the peak time period, judging whether the actual temperature T is less than the lowest water supply temperature TLIf the actual temperature T is less than the minimum supply water temperature TLThen the temperature is raised to the lowest water supply temperature T by adopting a circulation modeLIf the actual temperature T is greater than or equal to the minimum water supply temperature TLEntering standby;
5) and the steps 1) to 4) are cycled once every time t).
It should be noted that the interval time t can be set by a program, and if the interval time t can be set to 5min, the optimization controller collects the temperature and the liquid level of the water in the heat preservation water tank once every 5min, and performs the cycle judgment as shown in fig. 4 according to the temperature, the liquid level, and the time-of-use electricity price.
Example two
As shown in fig. 5, the utility model also provides a two hot water system, two hot water system connect between moisturizing case and water end, including steam boiler hot water system and energy-saving hot water system, two hot water system each other are standby system.
It should be noted that, in a normal situation, the dual hot water system mainly uses an energy-saving hot water system to supply water for the purpose of economy and energy conservation; and starting a hot water system of the steam boiler to supply water only when the energy-saving hot water system fails or insufficient heat supply occurs in extreme weather.
Specifically, the energy-saving hot water system includes:
the air source heat pump water heater unit is connected with the water replenishing tank through a first water pump and is used for heating water in the water replenishing tank;
the heat preservation water tank is directly communicated with the air source heat pump water heater unit and comprises at least one temperature sensor and at least one liquid level sensor, and the heat preservation water tank is also communicated with the air source heat pump water heater unit through a second water pump and is used for preserving heat of hot water flowing out of the air source heat pump water heater unit and storing the hot water, collecting the temperature of water in the heat preservation water tank through the temperature sensor and collecting the liquid level of the water in the heat preservation water tank through the liquid level sensor;
the optimization controller is respectively connected with the air source heat pump water heater unit and the heat preservation water tank and is used for controlling the operation of the air source heat pump water heater unit according to the temperature, the liquid level and the time-of-use electricity price of the heat preservation water tank;
the first water inlet pipeline is connected with the heat preservation water tank through a first gate valve and a third water pump and is used for supplying water to the tail end of water;
and the first water outlet pipeline is connected with the heat preservation water tank through a second gate valve and is used for transmitting the water at the tail end of the used water back to the heat preservation water tank.
Specifically, the steam boiler hot water system includes:
the steam boiler is used for generating steam and heating water in the steam boiler;
the positive displacement heat exchanger is connected with the steam boiler and is used for secondarily heating the water flowing into the positive displacement heat exchanger from the steam boiler;
the second water inlet pipeline is connected with the water using tail end through a fourth gate valve and used for supplying water to the water using tail end;
and the second water outlet pipeline is connected with the positive displacement heat exchanger through a fifth gate valve and a fourth water pump and is used for transmitting the water at the tail end of the used water back to the positive displacement heat exchanger.
Specifically, by closing the first gate valve and the second gate valve, the energy-saving hot water system is started, and under the condition that the temperature and the liquid level of water in the heat preservation water tank are guaranteed, hot water is pumped to the tail end of water by the third water pump, and circulates between the tail end of the water and the heat preservation water tank. And starting the steam boiler hot water system by closing the third gate valve, the fourth gate valve and the fifth gate valve, wherein the hot water is secondary water heated by the positive displacement heat exchanger, and the hot water circulates between the tail end of the water supply and the positive displacement heat exchanger.
Specifically, the fourth water pump is a constant-pressure water supply pump.
To sum up, the utility model discloses an energy-saving hot water system has following beneficial effect:
1. the energy-saving hot water system of the utility model controls the economical and energy-saving operation of the air source heat pump water heater unit through the optimization controller according to the water temperature, the liquid level and the time-of-use electricity price, thereby not only having high comprehensive energy efficiency, but also reducing the energy cost of hotels;
2. the air source heat pump water heater unit belongs to normal-pressure, environment-friendly and pollution-free equipment, has high safety performance, does not need water treatment, and does not cause pollution to the environment;
3. the utility model also provides a double hot water system shared by the steam boiler hot water system and the energy-saving hot water system, and the two hot water systems are mutually standby, thereby not only solving the problems that the steam boiler hot water system has lower efficiency and higher energy consumption, needs to carry out boiler water treatment, increases the cost of water treatment, and pollutes the environment by the pollution discharge and smoke discharge of the steam boiler; and the problem that the air source heat pump water heater is difficult to meet the hot water requirement in extreme weather is solved.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (15)
1. An energy efficient hot water system connected between a refill tank and a water use end, the energy efficient hot water system comprising:
the air source heat pump water heater unit is connected with the water replenishing tank through a first water pump and is used for heating water in the air source heat pump water heater unit;
the heat preservation water tank is directly communicated with the air source heat pump water heater unit and comprises at least one temperature sensor and at least one liquid level sensor, and the heat preservation water tank is also communicated with the air source heat pump water heater unit through a second water pump and is used for preserving heat of hot water flowing out of the air source heat pump water heater unit and storing the hot water, collecting the temperature of water in the heat preservation water tank through the temperature sensor and collecting the liquid level of the water in the heat preservation water tank through the liquid level sensor;
the optimization controller is respectively connected with the air source heat pump water heater unit and the heat preservation water tank and is used for controlling the operation of the air source heat pump water heater unit according to the temperature, the liquid level and the time-of-use electricity price of water in the heat preservation water tank;
the water inlet pipeline is connected with the heat preservation water tank through a third water pump and used for supplying water to the tail end of water;
and the water outlet pipeline is connected with the heat preservation water tank and is used for transferring the water at the tail end of the used water back to the heat preservation water tank.
2. The energy efficient hot water system of claim 1, comprising a direct heat mode and a circulation mode; wherein,
when the air source heat pump water heater unit is directly communicated with the heat preservation water tank, the air source heat pump water heater unit is in a direct heating mode, the water replenishing tank supplies water to the air source heat pump water heater unit through the first water pump, and the air source heat pump water heater unit heats the water and then transmits the water to the heat preservation water tank;
and when the heat-preservation water tank is communicated with the air source heat pump water heater unit through the second water pump, the circulation mode is that the heat-preservation water tank supplies water to the air source heat pump water heater unit through the second water pump, and the air source heat pump water heater unit heats the water and then transmits the water to the heat-preservation water tank.
3. The energy efficient hot water system of claim 1, wherein the number of temperature sensors is 5.
4. The energy efficient hot water system of claim 3, wherein the temperature of the water in the holding tank is an average of 5 sensor measurements.
5. The energy efficient hot water system of claim 1, wherein the number of level sensors is 1.
6. The energy saving hot water system as claimed in claim 1, wherein the first, second and third water pumps are constant pressure water supply pumps.
7. The energy efficient hot water system of claim 1, wherein said holding tank further comprises a drain valve, said drain valve being located at a bottom of said holding tank.
8. The energy efficient hot water system of claim 1, wherein the water inlet line further comprises a first gate valve connected between the water use end and a third water pump for controlling the opening and closing of the water inlet line.
9. The energy efficient water heating system of claim 1, wherein the water outlet line further comprises a second gate valve connected between the water use end and the holding tank for controlling the opening and closing of the water outlet line.
10. The double-hot water system is characterized in that the double-hot water system is connected between a water replenishing tank and a water using tail end and comprises a steam boiler hot water system and an energy-saving hot water system, wherein the two hot water systems are mutually standby systems.
11. The twin hot water system as defined in claim 10, wherein the energy efficient hot water system comprises:
the air source heat pump water heater unit is connected with the water replenishing tank through a first water pump and is used for heating water in the water replenishing tank;
the heat preservation water tank is directly communicated with the air source heat pump water heater unit and comprises at least one temperature sensor and at least one liquid level sensor, and the heat preservation water tank is also communicated with the air source heat pump water heater unit through a second water pump and is used for preserving heat of hot water flowing out of the air source heat pump water heater unit and storing the hot water, collecting the temperature of water in the heat preservation water tank through the temperature sensor and collecting the liquid level of the water in the heat preservation water tank through the liquid level sensor;
the optimization controller is respectively connected with the air source heat pump water heater unit and the heat preservation water tank and is used for controlling the operation of the air source heat pump water heater unit according to the temperature, the liquid level and the time-of-use electricity price of the heat preservation water tank;
the first water inlet pipeline is connected with the heat preservation water tank through a first gate valve and a third water pump and is used for supplying water to the tail end of water;
and the first water outlet pipeline is connected with the heat preservation water tank through a second gate valve and is used for transmitting the water at the tail end of the used water back to the heat preservation water tank.
12. The twin hot water system as set forth in claim 10, wherein the steam boiler hot water system comprises:
the steam boiler is used for generating steam and heating water in the steam boiler;
the positive displacement heat exchanger is connected with the steam boiler and is used for secondarily heating the water flowing into the positive displacement heat exchanger from the steam boiler;
the second water inlet pipeline is connected with the water using tail end through a fourth gate valve and used for supplying water to the water using tail end;
and the second water outlet pipeline is connected with the positive displacement heat exchanger through a fifth gate valve and a fourth water pump and is used for transmitting the water at the tail end of the used water back to the positive displacement heat exchanger.
13. The twin hot water system as defined in claim 11, wherein the economized hot water system is activated by closing the first gate valve and the second gate valve.
14. The twin hot water system as defined in claim 12, wherein the third, fourth and fifth gate valves are closed,
and starting the steam boiler hot water system.
15. The twin hot water system as defined in claim 12, wherein the fourth water pump is a constant pressure water supply pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620739439.0U CN205825425U (en) | 2016-07-14 | 2016-07-14 | A kind of energy-efficiency Type Hot Water Heating System |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620739439.0U CN205825425U (en) | 2016-07-14 | 2016-07-14 | A kind of energy-efficiency Type Hot Water Heating System |
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| CN205825425U true CN205825425U (en) | 2016-12-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855316A (en) * | 2019-03-30 | 2019-06-07 | 山东大学 | Hydrodynamic cavitation device for hot water centralizedly supply |
| CN110595062A (en) * | 2019-08-23 | 2019-12-20 | 泉州台商投资区百亚网络科技有限公司 | Directly-heated heat pump water heater |
-
2016
- 2016-07-14 CN CN201620739439.0U patent/CN205825425U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855316A (en) * | 2019-03-30 | 2019-06-07 | 山东大学 | Hydrodynamic cavitation device for hot water centralizedly supply |
| CN110595062A (en) * | 2019-08-23 | 2019-12-20 | 泉州台商投资区百亚网络科技有限公司 | Directly-heated heat pump water heater |
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