GB2466559A - Dairy heat reclamation system - Google Patents
Dairy heat reclamation system Download PDFInfo
- Publication number
- GB2466559A GB2466559A GB0921682A GB0921682A GB2466559A GB 2466559 A GB2466559 A GB 2466559A GB 0921682 A GB0921682 A GB 0921682A GB 0921682 A GB0921682 A GB 0921682A GB 2466559 A GB2466559 A GB 2466559A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dairy
- water
- condenser
- heat
- reclamation system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 235000013365 dairy product Nutrition 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 230000006835 compression Effects 0.000 claims abstract description 14
- 238000007906 compression Methods 0.000 claims abstract description 14
- 239000008267 milk Substances 0.000 claims abstract description 11
- 235000013336 milk Nutrition 0.000 claims abstract description 11
- 210000004080 milk Anatomy 0.000 claims abstract description 11
- 238000012544 monitoring process Methods 0.000 claims abstract description 3
- 238000005086 pumping Methods 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 13
- 238000005057 refrigeration Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 3
- 210000000481 breast Anatomy 0.000 description 2
- 244000309466 calf Species 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000037361 pathway Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 241000283690 Bos taurus Species 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/0005—Domestic hot-water supply systems using recuperation of waste heat
- F24D17/001—Domestic hot-water supply systems using recuperation of waste heat with accumulation of heated water
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01J—MANUFACTURE OF DAIRY PRODUCTS
- A01J7/00—Accessories for milking machines or devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/02—Domestic hot-water supply systems using heat pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/18—Domestic hot-water supply systems using recuperated or waste heat
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Animal Husbandry (AREA)
- Environmental Sciences (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
A dairy heat reclamation system has at least one vapour compression circuit 1 including a compressor 2, a condenser 3, an expansion device 5 and an evaporator 6 used for milk cooling. A heat exchanger 10 is inserted between the compressor and the condenser for heat removal, and water is recirculated through the heat exchanger to two or more hot water storage vessels 11, 12, preferably via a splitter 20. Water may be drawn from the vessels via combiner 19 for pumping back to the heat exchanger. Regulation of the vapour compression circuit may be achieved by monitoring the pressure at the outlet of the condenser. If two or more condensers are utilised, a respective heat exchanger may be inserted before each condenser, with each heat exchanger feeding a separate storage vessel. Preferably, heated water is drawn off via a further combiner 22 and supplied to points of use 24-28 or to an additional water heater to provide a further temperature increase. In use, the system is designed to store recovered heat in a relatively large volume of water which is heated to a lower temperature and allows existing plant to meet increased water requirements with increased energy efficiency.
Description
DAIRY HEAT RECLAMATION SYSTEM
TECHNICAL FIELD OF THE INVENTION
This invention relates to heat reclamation systems for use in dairies.
BACKGROUND
On a modern dairy farm the size of the refrigeration equipment required for milk cooling is considerable. The amount of hot water required for plant washing, bulk tank washing and other hygiene requirements has also increased significantly, and recent increases in energy prices mean that running costs are extremely high.
The idea of heat reclamation from refrigeration systems is not new. Existing heat reclamation systems are directed towards recovering the maximum amount of heat, and in order to store the heat energy a relatively small volume of water is raised to a high temperature. Consequently, it is often not possible to meet a sudden demand for large amounts of hot water, e.g. for bulk tank washing. Furthermore, such an arrangement does not make optimum use of the available heat energy. Installing a new refrigeration and heat storage system is expensive, and it is often difficult or impossible to accommodate a new system with sufficient storage capacity to fully meet the hot water requirements of an existing milk production unit.
The present invention seeks to provide a new and inventive form of dairy heat reclamation system which enables a significant volume of hot water to be heated and stored for use on demand whilst at the same time being easily accommodated within existing milk processing units.
SUMMARY OF THE INVENTION
The present invention proposes a dairy heat reclamation system having at least one vapour compression circuit including a compressor, a condenser, and expansion device and an evaporator used for milk cooling; in which a heat exchanger is inserted between the compressor and the condenser of the or each vapour compression circuit to remove heat therefrom, and water is recirculated through the heat exchanger, or exchangers, to two or more hot water storage vessels.
The system may be implemented with minimum disruption to existing cooling plant and is easily accommodated at relatively low cost. In the present system the emphasis is on storing the recovered heat in a relatively large volume of water which is heated to a lower temperature. The volume of hot water which is available on demand is significantly higher than in known installations, and the water can be heated to a higher temperature at the point of use if required.
The water can be pumped from the lower region of the storage vessels to the heat exchangers. If a single condenser is used, the heated water is fed to a splitter upon leaving the heat exchanger. Water leaving the heat exchanger, or exchangers, is returned to upper regions of the storage vessels. Where two or more condensers are used each heat exchanger feeds a separate storage vessel.
The heated water may be drawn off on demand from the top of the storage vessels via a combiner. Water which is drawn off may be replaced by cold water supplied to the bottom of the storage vessels.
Regulation of the modified vapour compression circuit is best achieved by monitoring the pressure at the outlet side of the condenser. To prevent over-condensing, a fall in pressure can be used to reduce cooling of the condenser, e.g. by switching off or slowing the cooling fan to reduce the amount of air flow over the condenser, or by opening a bypass route across the condenser.
BRIEF DESCRIPTION OF THE DRAWINGS
The following description and the accompanying drawings referred to therein are included by way of non-limiting example in order to illustrate how the invention may be put into practice.
In the drawings: Figure 1 is a schematic diagram of a dairy heat reclamation system in accordance with the invention; and Figure 2 is a schematic diagram of a simple splitter or recombiner for use in a four-cylinder system; Figure 3 is a schematic diagram of a second form of diary heat reclamation system in accordance with the invention; and Fqure 4 is a schematic diagram of a third form of diary heat reclamation system in accordance with the invention.
DETAILED DESCRIPTION OF THE DRAWINGS
Fig. 1 shows a small milk cooling plant incorporating a single vapour compression circuit 1. A compressor 2 circulates refrigerant vapour under pressure through a condenser 3 wherein the refrigerant condenses and gives out heat which is removed by one or more cooling fans 9. Condensed refrigerant passes into a receiver 4, and liquid refrigerant drawn from the receiver passes through an expansion device 5 such as a valve or small bore tube providing a restriction which reduces the temperature and pressure of the refrigerant before entering an evaporator 6. Vaporisation of the refrigerant in the evaporator 6 absorbs heat from milk which is passed over the surfaces of the evaporator. Vapour from the evaporator 6 is recirculated by the compressor 2 in a continuous cycle of condensation and evaporation.
In accordance with the present invention, the vapour pathway is broken between the compressor 2 and the condenser 3 at point A A' and a plate heat exchanger 10 having separate fluid paths is inserted. The compressed refrigerant vapour flows through the primary circulation path whilst water is recirculated through the secondary circuit to two or more water storage cylinders (direct or indirectly heated), two such cylinders 11 and 12 being shown in the drawing by way of example. The two cylinders 11 and 12 may be substantially identical in size and structure or of different sizes, depending upon the requirements of the site, each having a recirculation outlet 13 near the bottom of the cylinder and a recirculation inlet 14 near the top of the cylinder.
In addition, a separate feed inlet 15 is provided near the bottom of the cylinder, with a further hot water outlet 16 at the top of the cylinder.
Cold water is pumped from the cylinders 11 and 12 by a single pump 18. The water is drawn from the bottom of the cylinders via recirculation outlets 13 and fed to a recombiner 19, which, in this example, incorporates a single Tee piece. After passing through the pump 18 the water flows through the secondary of the heat exchanger 10 in which the water receives heat from the refrigeration circuit. The relatively warm water passing out of the heat exchanger 10 is fed to a two-way splitter 20 (again a single Tee-piece in this example) from which the substantially equal flows are returned to the cylinders 11 and 12 via the respective recirculation inlets 14.
The cylinders are provided with a layer of thermal insulation material (not shown) to prevent direct heat loss through their walls. Hot water is removed on demand from both of the cylinders 11 and 12 via the hot water outlets 16. Again, the outlets are connected via a Tee-piece 22 and distribution pipework 23 to various points of use such as plant wash 24, tank wash 25, hand wash 26, udder wash 27, calf feed 28, etc. The hot water can either be used directly or used to supply additional water heaters to provide a further temperature increase when necessary.
Hot water drawn off from the cylinders 11 and 12 is replaced by suitable means such as a header tank 30 which is maintained from a water supply 31 via a float valve 32. The header tank 30 feeds the cylinders via the bottom feed inlets 15. For safety purposes at least one vent pipe 34 is routed from the supply outlets 16 to discharge into the header tank 30.
The system is largely self-regulating since the temperature of water in the storage tanks cannot exceed that of the compressed vapour, normally around 53 °C. It is necessary to safeguard against the danger of over-condensing, and this is easily achieved by providing an electronic control unit 36 which is arranged to monitor the vapour pressure at the outlet of the condenser 3 using a pressure sensor 37. If the pressure drops below a predetermined safe limit the control unit takes steps to reduce the vapour flow, which may be achieved in various ways.
The air flow over the condenser can be reduced, e.g. by slowing down or switching off the cooling fans 9. Another possibility is to provide a bypass 38 across the condenser 3 controlled by a valve 39. If the vapour outlet pressure drops, the valve 39 opens so that a proportion of the hot vapour bypasses the condenser 3.
The additional heat removal from the vapour compression circuit via the heat exchanger 10 will improve refrigeration during the summer when ambient temperatures are relatively high.
To ensure a balanced flow through the cylinders 11 and 12 a simple arrangement of Tee-pieces is used. In the two-cylinder system described this is achieved by using a single Tee-piece, but similar arrangements can easily be devised for systems using three or more cylinders. Systems using three or more storage cylinders may use multi-way manifolds for splitting and recombining the flows. Fig. 2 shows a simple Tee-piece splitter or recombiner for use with four-cylinder systems.
Fig. 3 shows a heat reclamation system as used in a larger milk cooling plant incorporating two or more vapour compression circuits 1.1 and 1.2. Each circuit has a compressor 2.1, 2.2 which circulates refrigerant vapour under pressure through a condenser 3.1, 3.2 wherein the refrigerant condenses and gives out heat which is removed by cooling fans 9.1 and 9.2.
Condensed refrigerant passes into a receiver 4.1, 4.2, and liquid refrigerant drawn from the receiver passes through a expansion device 5.1, 5.2 such as a valve or small bore tube which reduces the temperature and pressure of the refrigerant before entering a common evaporator 6. Vaporisation of the refrigerant in the evaporator 6 absorbs heat from milk passing over the surfaces of the evaporator. Vapour from the evaporator 6 is recirculated by the compressors 2.1 and 2.2 in a continuous cycle of condensation and evaporation.
Again, a plate heat exchanger 10.1, 10.2 having separate fluid paths is inserted the vapour pathway between each compressor 2.1 and 2.2 and the condenser 3.1, 3.2. Water is recirculated through the secondary circuit of each evaporator to a respective water storage cylinder 11 and 12 (direct or indirectly heated).
The two cylinders 11 and 12 may be substantially identical in size and structure or of different sizes, depending upon the requirements of the site, each having a recirculation outlet 13 near the bottom of the cylinder and a recirculation inlet 14 near the top of the cylinder. In addition, a separate feed inlet 15 is provided near the bottom of the cylinder, with a further hot water outlet 16 at the top of the cylinder.
Cold water is pumped from the cylinders 11 and 12 by respective recirculation pumps 18.1 and 18.2 which draw water from the bottom of the cylinders via recirculation outlets 13, and after passing through the heat exchangers 10.1 and 10.2 hot water is returned to the recirculation inlets 14.
The cylinders are provided with a layer of thermal insulation material (not shown) to prevent direct heat loss through their walls. Hot water is removed on demand from both of the cylinders 11 and 12 via the hot water outlets 16 which are connected via a Tee-piece 22 and distribution pipework 23 to various points of use 24-26 etc, such as plant wash, tank wash, hand wash, udder wash, calf feed, etc. The hot water can either be used directly or fed through additional water heaters to boost the water temperature when necessary.
Hot water drawn off from the cylinders 11 and 12 is replaced from a header tank 30 which is maintained from a water supply and float valve. The header tank 30 feeds the cylinders via the bottom feed inlets 15. A vent pipe 34 is routed from the supply outlets 16 to discharge into the header tank.
This system is also largely self-regulating since the temperature of water in the storage tanks cannot exceed that of the -10 -compressed vapour, normally around 53 °C. To safeguard against the danger of over-condensing each vapour compression circuit is provided with an electronic control unit 36.1, 36.2 which is arranged to monitor the vapour pressure at the outlet of the condenser 3. If the pressure drops below a predetermined safe limit the control unit reduces the vapour flow by slowing down or switching off the cooling fans 9 to reduce the air flow over the condenser.
The additional heat removal from each vapour compression circuit via the heat exchangers 10.1 and 10.2 will improve refrigeration during the summer when ambient temperatures are relatively high.
Fig. 4 shows a modified form of the dairy heat reclamation system shown in Fig. 3, for use with pressurised systems.
Instead of using a header tank the cold water mains supply 40 is fed directly to the supply inlets 15 of cylinders 11 and 12 via a pressure reducing valve 41, reducing the pressure to no more than 1 bar, and then through an expansion vessel 42 which allows for any expansion of the water when heated. The expansion pipe is also eliminated since the pressure vessel 42 limits any pressure rise. Such an arrangement is used where there is no room for a header tank at a sufficient height to provide an adequate flow of water to the different points of use.
The purpose of the systems described above is to ensure that the required amount of hot water is provided. Each condenser -11 -iii the dairy plant has a respective heat exchanger which is arranged to supply a sufficient number of cylinders to provide the amount of water that is required by the site. The emphasis on the new system is that an increased volume of warm water is made available to meet the water requirements on site rather then recovering the maximum amount of heat which is used to raise the temperature of a relatively small volume of water. The new arrangement is considerably more efficient in terms of overall energy efficiency, even if supplementary heating is used to provide a further increase in temperature.
The heat recovery system is capable of high efficiency and is easy to add to an existing milk cooling plant even where space is limited. An average dairy farm milking 100 to 150 cows will save approximately 10,000 to 15,000 kilowatt hours per year.
The more water that is used the greater the savings will be.
Whilst the above description places emphasis on the areas which are believed to be new and addresses specific problems which have been identified, it is intended that the features disclosed herein may be used in any combination which is capable of providing a new and useful advance in the art.
Claims (12)
- -12 -CLAIMS1. A dairy heat reclamation system having at least one vapour compression circuit including a compressor, a condenser, and expansion device and an evaporator used for milk cooling; in which a heat exchanger is inserted between the compressor and the condenser of the or each vapour compression circuit to remove heat therefrom, and water is recirculated through the heat exchanger, or exchangers, to two or more hot water storage vessels.
- 2. A dairy heat reclamation system according to Claim 1 which includes a single condenser and the water is fed to a splitter upon leaving the heat exchanger.
- 3. A dairy heat reclamation system according to Claim 1 in which includes two or more condensers and each heat exchanger feeds a separate storage vessel.
- 4. A dairy heat reclamation system according to any preceding claim in which the water is pumped from a lower region of the storage vessels to the heat exchanger or exchangers.
- 5. A dairy heat reclamation system according to Claim 1 in which water leaving the heat exchanger, or exchangers, is returned to upper regions of the storage vessels.-13 -
- 6. A dairy heat reclamation system according to any preceding claim in which heated water is drawn off on demand from the top of the storage vessels via a combiner.
- 7. A dairy heat reclamation system according to Claim 1 in which water which is drawn off from the storage vessels is replaced by cold water supplied to the bottom of the storage vessels.
- 8. A dairy heat reclamation system according to Claim 7 in which cold water is supplied from a header tank supplied via a level control valve.
- 9. A dairy heat reclamation system according to Claim 1 in which cold water is supplied via a pressure limiter and expansion vessel.
- 10. A dairy heat reclamation system according to any preceding claim in which regulation of the or each vapour compression circuit is achieved by monitoring the pressure at the outlet side of the condenser.
- 11. A dairy heat reclamation system according to Claim 10 in which a fall in vapour pressure is used to reduce cooling of the condenser
- 12. A dairy heat reclamation system according to Claim 11 -14 -in which by cooling of the condenser is reduced by reducing the amount of air flow over the condenser.13 A dairy heat reclamation system according to Claim 10 in which regulation of the vapour compression circuit is achieved by opening a bypass route across the condenser.14. A dairy heat reclamation system substantially as described with reference to the drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB0823587.1A GB0823587D0 (en) | 2008-12-29 | 2008-12-29 | Dairy heat reclamation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0921682D0 GB0921682D0 (en) | 2010-01-27 |
| GB2466559A true GB2466559A (en) | 2010-06-30 |
Family
ID=40344238
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB0823587.1A Pending GB0823587D0 (en) | 2008-12-29 | 2008-12-29 | Dairy heat reclamation system |
| GB0921682A Withdrawn GB2466559A (en) | 2008-12-29 | 2009-12-11 | Dairy heat reclamation system |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB0823587.1A Pending GB0823587D0 (en) | 2008-12-29 | 2008-12-29 | Dairy heat reclamation system |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB0823587D0 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2484351A (en) * | 2010-10-09 | 2012-04-11 | Dairy Green Ltd | Cooling milk |
| DE102011017722B4 (en) * | 2010-04-29 | 2013-09-12 | Ecolactis Sarl | Refrigerant migration device in a low-pressure vapor compression refrigeration system and method for refrigerant migration |
| GB2510547A (en) * | 2012-03-01 | 2014-08-13 | Colin Thomas Thomson | Heat recovery system |
| FR3131678A1 (en) * | 2022-01-13 | 2023-07-14 | Serap Industries | Process for recovering heat in a milk storage and cooling installation, program and computer memory for carrying it out |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE556713T1 (en) | 1999-01-13 | 2012-05-15 | Bayer Healthcare Llc | OMEGA-CARBOXYARYL SUBSTITUTED DIPHENYL UREAS AS P38 KINASE INHIBITORS |
| US7928239B2 (en) | 1999-01-13 | 2011-04-19 | Bayer Healthcare Llc | Inhibition of RAF kinase using quinolyl, isoquinolyl or pyridyl ureas |
| US8124630B2 (en) | 1999-01-13 | 2012-02-28 | Bayer Healthcare Llc | ω-carboxyaryl substituted diphenyl ureas as raf kinase inhibitors |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB880638A (en) * | 1959-06-26 | 1961-10-25 | Alfa Laval Co Ltd | Improvements in milk cooling apparatus |
| GB1434541A (en) * | 1973-01-15 | 1976-05-05 | Exeter Refrigeration Co Ltd | Combined refrigeration and water heating system |
| US4041726A (en) * | 1976-03-29 | 1977-08-16 | Paul Mueller Company | Hot water system |
| FR2370424A1 (en) * | 1976-11-10 | 1978-06-09 | Vironneau Pierre | Energy recovery system for milk refrigerating plant - has condenser hat exchanger for heating plant cleansing water |
| GB1532222A (en) * | 1976-02-11 | 1978-11-15 | Exeter Refrigeration Co Ltd | Combined refrigeration and water heating system |
| US4130996A (en) * | 1977-06-06 | 1978-12-26 | Sult Gratz M | Refrigeration system and evaporator unit therefor |
| DD285167A5 (en) * | 1989-06-20 | 1990-12-05 | Veb Maschinen- Und Apparatebau Schkeuditz,Dd | CIRCUIT ARRANGEMENT FOR PERFORMANCE CONTROL FOR CERTAIN PLANTS WITH CURED PRODUCT RECOVERY |
| DE29715127U1 (en) * | 1997-08-18 | 1997-12-18 | ITEC Entwicklungs- und Vertriebsgesellschaft mbH Elsterwerda, 04910 Elsterwerda | Refrigeration system for milk cooling units |
| EP1826510A2 (en) * | 2006-02-27 | 2007-08-29 | Sanyo Electric Co., Ltd. | Refrigeration cycle device |
-
2008
- 2008-12-29 GB GBGB0823587.1A patent/GB0823587D0/en active Pending
-
2009
- 2009-12-11 GB GB0921682A patent/GB2466559A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB880638A (en) * | 1959-06-26 | 1961-10-25 | Alfa Laval Co Ltd | Improvements in milk cooling apparatus |
| GB1434541A (en) * | 1973-01-15 | 1976-05-05 | Exeter Refrigeration Co Ltd | Combined refrigeration and water heating system |
| GB1532222A (en) * | 1976-02-11 | 1978-11-15 | Exeter Refrigeration Co Ltd | Combined refrigeration and water heating system |
| US4041726A (en) * | 1976-03-29 | 1977-08-16 | Paul Mueller Company | Hot water system |
| FR2370424A1 (en) * | 1976-11-10 | 1978-06-09 | Vironneau Pierre | Energy recovery system for milk refrigerating plant - has condenser hat exchanger for heating plant cleansing water |
| US4130996A (en) * | 1977-06-06 | 1978-12-26 | Sult Gratz M | Refrigeration system and evaporator unit therefor |
| DD285167A5 (en) * | 1989-06-20 | 1990-12-05 | Veb Maschinen- Und Apparatebau Schkeuditz,Dd | CIRCUIT ARRANGEMENT FOR PERFORMANCE CONTROL FOR CERTAIN PLANTS WITH CURED PRODUCT RECOVERY |
| DE29715127U1 (en) * | 1997-08-18 | 1997-12-18 | ITEC Entwicklungs- und Vertriebsgesellschaft mbH Elsterwerda, 04910 Elsterwerda | Refrigeration system for milk cooling units |
| EP1826510A2 (en) * | 2006-02-27 | 2007-08-29 | Sanyo Electric Co., Ltd. | Refrigeration cycle device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011017722B4 (en) * | 2010-04-29 | 2013-09-12 | Ecolactis Sarl | Refrigerant migration device in a low-pressure vapor compression refrigeration system and method for refrigerant migration |
| GB2484351A (en) * | 2010-10-09 | 2012-04-11 | Dairy Green Ltd | Cooling milk |
| GB2510547A (en) * | 2012-03-01 | 2014-08-13 | Colin Thomas Thomson | Heat recovery system |
| GB2510547B (en) * | 2012-03-01 | 2016-04-27 | Waste Heat Recovery Ltd | Heat recovery |
| FR3131678A1 (en) * | 2022-01-13 | 2023-07-14 | Serap Industries | Process for recovering heat in a milk storage and cooling installation, program and computer memory for carrying it out |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0823587D0 (en) | 2009-01-28 |
| GB0921682D0 (en) | 2010-01-27 |
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