CN109357554B - Energy-saving system for recycling waste heat of hot water shower - Google Patents

Energy-saving system for recycling waste heat of hot water shower Download PDF

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Publication number
CN109357554B
CN109357554B CN201811265471.XA CN201811265471A CN109357554B CN 109357554 B CN109357554 B CN 109357554B CN 201811265471 A CN201811265471 A CN 201811265471A CN 109357554 B CN109357554 B CN 109357554B
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water
shower
pipe
waste heat
hot water
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CN109357554A (en
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冯鑫博
蒋福新
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/08Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
    • F28D7/082Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration

Abstract

The invention discloses a hot water shower waste heat recycling energy-saving system which comprises a heating insulation box, a hot water insulation box, a water source pipe and a hot water conveying pipe for conveying hot water to a shower room, wherein a water collecting tank and a shower plate for covering the water collecting tank are arranged under the ground of a shower position, a water outlet is arranged at the bottom of the water collecting tank, a waste heat recoverer is arranged in the water collecting tank, a plurality of shower holes are formed in the position, located right above the waste heat recoverer, of the shower plate, a water return branch pipe is arranged in the shower position, and the water source pipe is provided with the water source branch pipe. Compared with the prior art, the invention can be connected with a plurality of shower sites simultaneously to form an energy-saving system, and the waste heat recoverer is used for recycling the heat of the shower waste water to greatly improve the initial temperature of a water source, so that a large amount of energy consumption cost can be saved, and the invention is very suitable for public bathrooms of higher schools, troops, large factories and mining enterprises and the like, and has excellent market application and popularization prospects.

Description

Energy-saving system for recycling waste heat of hot water shower
Technical Field
The invention relates to the technical field of energy conservation and consumption reduction, in particular to a hot water shower waste heat recycling energy-saving system.
Background
With the improvement of the speech index of the person, a good personal hygiene habit is developed, and the general crowd has a bathing habit every day through one-day labor, work or study. Patent document CN201320274356.5 discloses a "shower room with preheater", which can reduce the energy consumption of the shower room by the water for bath, which is applied to a separate shower room, or which is suitable for personal and household use, and which brings about energy saving benefits which are not particularly obvious.
In public bathrooms of higher institutions, armies, large factories and mining enterprises and the like, thousands or even tens of thousands of people need to be bathed every day, the daily water consumption and the energy consumption are huge, and the energy consumption expenditure causes great economic pressure to the units.
Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the hot water shower waste heat recycling energy-saving system can greatly reduce the energy consumption of the bath water of large-scale public bathrooms of colleges, forces, large-scale factories and mining enterprises and the like.
The technical scheme is as follows: in order to achieve the above purpose, the invention provides an energy-saving system for recycling waste heat of a hot water shower, which comprises a heating insulation box, a hot water insulation box, a water source pipe and a hot water conveying pipe for conveying hot water to a shower room, wherein a water collecting tank and a rain plate for covering the water collecting tank are arranged under the ground of the shower position, a water outlet is arranged at the bottom of the water collecting tank, a waste heat recoverer is arranged in the water collecting tank, a plurality of rain holes are arranged at the position, right above the waste heat recoverer, of the rain plate, a water return branch pipe is arranged in the shower position, the water source pipe is provided with the water source branch pipe, the water source branch pipe is communicated with the water return branch pipe through the waste heat recoverer, the waste heat recoverer is used for absorbing heat of waste water generated by the shower to raise the temperature of the water source, the water return branch pipe is communicated with a water return main pipe, the water main pipe is led into the water heat-return insulation water storage tank, and a water supplementing pipe is arranged between the water heat-return insulation water storage tank and the heating insulation box.
The design principle of the invention is as follows: the water source branch pipe, the waste heat recoverer, the water return branch pipe, the water return header pipe, the water return heat preservation water storage tank and the water supplementing pipe are utilized to form a water return loop, the ingenious structural design of the waste heat recoverer is utilized, so that waste water generated by a shower can exchange heat with a water source in an inner cavity of the waste heat recoverer in the process of passing through the waste heat recoverer, and the waste heat of the recovered waste water is utilized to improve the temperature of an initial water source entering the heating heat preservation box, so that the energy consumption required by water in the heating process is reduced; the backwater in the backwater heat-preserving water storage tank is also used as a heating water source, so that the water consumption of the shower is not increased; according to different seasons, namely different temperatures of the initial water source, the temperature of the initial water source is raised to be 6 ℃ in summer, 10-12 ℃ in spring and autumn and 16-18 ℃ in winter.
Further, the waste heat recoverer comprises a guide coil pipe and a water inlet and a water outlet of the guide coil pipe, the water inlet and the water outlet of the guide tube are respectively communicated with a water source branch pipe and a water return branch pipe, the guide coil pipe is of a multi-layer coiled structure, gaps exist between the guide coil pipe and the guide coil pipe, waste water after shower flows downwards along the guide coil pipe through the gaps, the waste water enters from the top of the guide coil pipe and flows out from the bottom of the guide coil pipe to form a long path, the guide coil pipe has good heat conductivity, a water source in an inner cavity of the guide coil pipe can absorb a large amount of shower waste water heat, and accordingly the water source temperature is improved.
Further, the shower holes are uniformly distributed right above the guide coil, so that the shower wastewater can uniformly contact the guide coil through the shower holes, the heat exchange effect is improved, and the heat recovery efficiency of the shower wastewater is improved.
Further, a water supplementing pump is arranged on the water supplementing pipe and is used for supplementing backwater in the backwater heat preservation water storage tank into the heating heat preservation box through the water supplementing pipe.
Further, be provided with the electronic time delay valve of return water on the return water branch pipe, the electronic time delay valve of return water is on the one hand to realize the break-make function on the return water branch pipe, and on the other hand it possesses the time delay and opens the function, because when the water source switch-on to the gondola water faucet goes out in the time of hot water, the water source in the water conservancy diversion coil inner chamber is unable to obtain heat transfer intensification, and the time delay of the electronic time delay valve of return water opens the function, can excessively fall this period of time, has guaranteed the water source temperature that flows into in the return water heat preservation water storage tank at last.
Further, the vacuum breaker is arranged on the water return main pipe, and after all the water return branch pipes are closed, the vacuum breaker ensures that the water return in the water return main pipe rapidly flows to the water return heat-preserving water storage tank, and prevents the water return from being retained in the water return main pipe.
Further, a regulating valve is arranged between the water source branch pipe and the water inlet of the diversion pipe, and the regulating valve can regulate the flow of the water source in the water source branch pipe entering the diversion coil pipe.
Further, the shower plate just covers the ground of the shower position, so that the waste water in the shower position can smoothly flow into the water collecting tank through the shower holes of the shower plate, and the waste water is prevented from accumulating in the shower position and can not be discharged.
Further, a water supplementing electromagnetic valve is arranged on the water supplementing pipe, and the on-off of water in the water supplementing pipe flowing into the heating insulation box can be controlled through the water supplementing electromagnetic valve.
Further, the shower holes on the shower plate are positioned right below the shower head in the shower room, so that shower waste water can smoothly flow onto the diversion coil in the water collecting tank.
The beneficial effects are that: compared with the prior art, the invention can be connected with a plurality of shower sites simultaneously to form an energy-saving system, the waste heat of the shower waste water is recycled by the waste heat recoverer to greatly improve the initial temperature of the water source, and the initial temperature of the water source can be improved by 6-18 ℃ according to different seasons and external environments, so that the energy consumption of the water source in the heating process is greatly reduced, a large amount of energy consumption cost can be saved, and the energy-saving shower bath system is very suitable for public bathrooms of higher institutions, armies, large factories and mining enterprises and the like, and has excellent market application popularization prospect and environmental protection effects of energy conservation and emission reduction.
Drawings
FIG. 1 is a schematic diagram of a system connection of the present invention;
FIG. 2 is a schematic diagram of an energy saving system within a shower enclosure;
FIG. 3 is a top view of the waste heat recoverer;
fig. 4 is a side view of the waste heat recoverer.
Detailed Description
The present invention is further illustrated in the accompanying drawings and detailed description which are to be understood as being merely illustrative of the invention and not limiting of its scope, and various modifications of the invention, which are equivalent to those skilled in the art upon reading the invention, will fall within the scope of the invention as defined in the appended claims.
The embodiment applies the system of the invention to a public bathroom of a student apartment building in a college, wherein the public bathroom is provided with a plurality of shower rooms, the number of students in the student apartment building is 1200, the temperature of hot water used in each shower day reaches 39-42 ℃, the average hot water used in each day is 20t, and the hot water used in each month is about 600t.
As shown in fig. 1 and 2, the system in this embodiment comprises an air source heat pump 101, a heating insulation box 102, a hot water insulation box 103, a water source pipe 8 connected with a tap water pipe and a hot water conveying pipe 14 for conveying hot water to the shower, wherein the hot water conveying pipe 14 is communicated with a shower head of each shower, a water collecting tank 5 and a shower plate 6 covering the water collecting tank 5 are arranged under the ground of the shower position of each shower, the ground of the shower position is just covered by the shower plate 6, a water outlet 51 is arranged at the bottom of the water collecting tank 5, a waste heat recoverer 1 is arranged in the water collecting tank 5, a plurality of uniformly distributed shower holes 61 are arranged at the position of the shower plate 6 right above the waste heat recoverer 1, the waste heat recoverer 1 comprises a water inlet 3 and a water outlet 4 of a diversion coil 2, and a water inlet 3 and a water outlet 4 of the diversion coil 2 are particularly shown in fig. 3 and 4, the shower position is internally provided with a backwater branch pipe 9, a water source branch pipe 7 is arranged on a water source pipe 8, the water source branch pipe 7 transversely penetrates through all water collecting tanks 5 in a public bathroom, the water source branch pipe 7 is respectively communicated with a water inlet 3 of the waste heat recoverer 1 through pipelines, one end of the backwater branch pipe 9 is communicated with a water outlet 4 of the waste heat recoverer 1, the other end of the backwater branch pipe 9 is communicated with a backwater main pipe 11, the backwater branch pipe 9 is provided with a backwater electric delay valve 12, a pipeline between the water source branch pipe 7 and the water inlet 3 is provided with an adjusting valve 71, the backwater main pipe 11 is provided with a vacuum breaker 10, the backwater main pipe 11 is positioned in an integrated suspended ceiling 15 in the public bathroom of the embodiment and extends outwards to be communicated into a backwater heat preservation water storage tank 104, a water supplementing pipe 16 is arranged between the backwater heat preservation water storage tank 104 and a heating heat preservation tank 102, and the water supplementing pump 17 and the water supplementing electromagnetic valve 18 are arranged on the water supplementing pipe 16.
The water source firstly enters the heating insulation box 102 through the water source pipe 8, under the action of the air source heat pump 101, the water in the heating insulation box 102 rises to a set temperature range, then the hot water turning pump is injected into the hot water insulation box 103 for storage and insulation, students start by swiping cards on the shower switch 13, the students turn on the hot water switch, the hot water in the hot water insulation box 103 flows out of the shower head through the hot water pump conveying pipe 14, at the moment, the backwater electric delay valve 12 of the shower position is opened in a delayed mode, tap water flows into the guide coil 2 from the water inlet 3 of the waste heat recoverer 1 through the water source branch pipe 7 of the water source pipe 8, at the moment, the temperature of waste water generated by shower is 32-34 ℃, the waste water flows into the top of the guide coil 2 in the water collecting tank 5 through the shower hole 61 of the shower plate 6, a section of flow path flows down from the bottom of the guide coil 2 through the guide coil 2, finally, the waste water flows into the waste water drainage ditch through the drainage outlet 51 to be drained, in the process of flowing of the guide coil pipe 2, the waste water exchanges heat with tap water flowing in the inner cavity of the guide coil pipe 2, because the guide coil pipe 2 has excellent heat conducting property, the heat medium of the waste water is transferred to the tap water by the guide coil pipe 2, the tap water naturally absorbs heat of the waste water, thereby improving the temperature of the tap water in the inner cavity of the guide coil pipe 2, the heated tap water flows into the backwater heat preservation water storage tank 104 through the backwater branch pipe 9 and the backwater main pipe 11, when water is needed to be supplemented, the backwater heat preservation water storage tank 104 is filled with the heated tap water through the backwater pipe 16 by opening the backwater electromagnetic valve 18, starting the backwater pump 17, at the moment, the water source electromagnetic valve 19 is automatically closed, and the water source injected into the heated heat preservation water tank 102 is the heated tap water, the initial temperature of the water source is increased, so that the energy consumption generated by heating the water is greatly reduced.
According to the above, after the energy saving system is applied in the public bath room of the student apartment building, the energy consumption data of the energy saving system is detected and counted in four seasons, namely, spring, summer, autumn and winter, and the energy saving system is specifically as follows:
the data in summer and winter are subjected to detection statistics, and the detection statistics are specifically shown in the following table:
backwater heat-preserving water storage tank Inner box material 304, outer box 202, thermal insulation PUR, thickness 10cm
Piping connection and insulation PPR piping, B2 rubber and plastic
Waste heat recoverer Seamless copper tube TP2 of heat conductor material
Heat conduction area 1.00m 2
Thermal conductivity 384 w/m.k
Water supply water path 30M
The flow rate of the effluent is 0.11L/s
Recovered water yield 396L/h
Heat absorption capacity in summer of 2376kcal/h is improved by 6 DEG C
The heat absorption capacity in winter is 6336kcal/h, and the recovery water is improved by 16 DEG
Withstand voltage 0.6MPa
Inlet and outlet water interface G1/2'
External dimension 280×270×140mm
According to the table, the heat absorption capacity in summer is 2376kcal/h, and the recovery water is improved by 6 degrees; the heat absorption capacity in winter is 6336kcal/h, the recovery water is improved by 16 degrees, and the heat recovery realized by the waste heat recoverer reaches 80% of the waste water heating medium.
The energy consumption data of spring, autumn and winter were measured and counted, and for a 1200 student apartment complex public bathroom, hot water was used for shower each day up to 39-42 ℃, on average 20t for each day, and about 600t for each month. The recovered water source in the backwater heat-preserving water storage tank 104 is higher than the normal temperature water source by 10 ℃ in spring and autumn, the energy used per month can be saved by 600 kcal, the recovered water source in the backwater heat-preserving water storage tank 104 is higher than the normal temperature water source by 16 ℃ in winter, and the energy used per month can be saved by 960 kcal.
The energy saving data are only aimed at 1200 students' apartment building public bathrooms, and if the energy saving system of the embodiment is applied to the whole university with tens of thousands of people or a large factory and mine enterprise with tens of thousands of people, the energy saving data achieved in one year are huge, and can bring considerable benefit to the units.

Claims (8)

1. The energy-saving system for recycling waste heat of the hot water shower comprises a heating insulation box, a hot water insulation box, a water source pipe and a hot water conveying pipe for conveying hot water to the shower room, wherein a water collecting tank and a shower plate for covering the water collecting tank are arranged under the ground of a shower position, a water outlet is formed in the bottom of the water collecting tank, a waste heat recoverer is arranged in the water collecting tank, a plurality of shower holes are formed in the position, right above the waste heat recoverer, of the shower plate, and the energy-saving system is characterized in that a water source firstly enters the heating insulation box through the water source pipe, water in the heating insulation box rises to a set temperature range under the action of an air source heat pump, and then a hot water turning pump is injected into the hot water insulation box for storage and heat preservation; the hot water switch is turned on, hot water in the hot water insulation box flows out of the shower head through a hot water pump conveying pipe, a water return branch pipe is arranged in the shower position, a water source branch pipe is arranged on the water source pipe, the water source branch pipe is communicated with the water return branch pipe through a waste heat recoverer, the waste heat recoverer is used for absorbing heat of waste water generated by shower to raise the temperature of the water source, the water return branch pipe is communicated with a water return main pipe, the water return main pipe is led into a water return insulation water storage tank, and a water supplementing pipe is arranged between the water return insulation water storage tank and the heating insulation box;
the waste heat recoverer comprises a guide coil pipe, a water inlet and a water outlet of the guide coil pipe, and the water inlet and the water outlet of the guide coil pipe are respectively communicated with a water source branch pipe and a water return branch pipe;
and a vacuum breaker is arranged on the water return main pipe.
2. The hot water shower waste heat recovery and utilization energy saving system according to claim 1, wherein: the deluge holes are uniformly distributed right above the diversion coil.
3. The hot water shower waste heat recovery and utilization energy saving system according to claim 1, wherein: and a water supplementing pump is arranged on the water supplementing pipe.
4. The hot water shower waste heat recovery and utilization energy saving system according to claim 1, wherein: and a backwater electric delay valve is arranged on the backwater branch pipe.
5. The hot water shower waste heat recovery and utilization energy saving system according to claim 1, wherein: and an adjusting valve is arranged between the water source branch pipe and the water inlet of the flow guide pipe.
6. The hot water shower waste heat recovery and utilization energy saving system according to claim 1, wherein: the deluge plate just covers the ground of the shower site.
7. The hot water shower waste heat recovery and utilization energy saving system according to claim 1, wherein: and a water supplementing electromagnetic valve is arranged on the water supplementing pipe.
8. The hot water shower waste heat recovery and utilization energy saving system according to claim 1, wherein: the shower holes on the shower plate are positioned right below the shower head in the shower room.
CN201811265471.XA 2018-10-29 2018-10-29 Energy-saving system for recycling waste heat of hot water shower Active CN109357554B (en)

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CN109357554B true CN109357554B (en) 2024-03-08

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200309616Y1 (en) * 2003-01-20 2003-04-08 정아라 Heat exchanger for wasted heat
CN1851382A (en) * 2006-05-18 2006-10-25 东北电力大学 Ash-scraping waste-heat-recovering coal-saving device
JP2008180398A (en) * 2007-01-23 2008-08-07 Fujitsu General Ltd Heat recovery device for bathroom wastewater
JP3149968U (en) * 2009-02-09 2009-04-23 田中 彰 Water heater
DE102007063111A1 (en) * 2007-12-23 2009-06-25 Sögtrop, Michael, Dipl.-Phys. Method for recycling waste water i.e. industrial water, heat from shower for toilet flushing, involves passing waste water to heat exchanger that is attached in close to shower with possible large surface speed
KR20110024687A (en) * 2009-09-03 2011-03-09 (주) 지이에스앤씨 Down-flow type waste heat recovery device
CN104422312A (en) * 2013-08-31 2015-03-18 黑龙江省金永科技开发有限公司 Backflow-type sewage heat exchanger
CN106152822A (en) * 2016-08-18 2016-11-23 华南理工大学 A kind of bathroom residual neat recovering system using direct-fired sorption type heat pump and method
CN108056692A (en) * 2018-01-30 2018-05-22 长春光速科技有限公司 A kind of thermal energy recycling showerhead that cover is hidden with pipeline
CN209310567U (en) * 2018-10-29 2019-08-27 冯鑫博 Water-heating shower Waste Heat Recovery utilizes energy conserving system

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200309616Y1 (en) * 2003-01-20 2003-04-08 정아라 Heat exchanger for wasted heat
CN1851382A (en) * 2006-05-18 2006-10-25 东北电力大学 Ash-scraping waste-heat-recovering coal-saving device
JP2008180398A (en) * 2007-01-23 2008-08-07 Fujitsu General Ltd Heat recovery device for bathroom wastewater
DE102007063111A1 (en) * 2007-12-23 2009-06-25 Sögtrop, Michael, Dipl.-Phys. Method for recycling waste water i.e. industrial water, heat from shower for toilet flushing, involves passing waste water to heat exchanger that is attached in close to shower with possible large surface speed
JP3149968U (en) * 2009-02-09 2009-04-23 田中 彰 Water heater
KR20110024687A (en) * 2009-09-03 2011-03-09 (주) 지이에스앤씨 Down-flow type waste heat recovery device
CN104422312A (en) * 2013-08-31 2015-03-18 黑龙江省金永科技开发有限公司 Backflow-type sewage heat exchanger
CN106152822A (en) * 2016-08-18 2016-11-23 华南理工大学 A kind of bathroom residual neat recovering system using direct-fired sorption type heat pump and method
CN108056692A (en) * 2018-01-30 2018-05-22 长春光速科技有限公司 A kind of thermal energy recycling showerhead that cover is hidden with pipeline
CN209310567U (en) * 2018-10-29 2019-08-27 冯鑫博 Water-heating shower Waste Heat Recovery utilizes energy conserving system

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