GB2575765A - Fluid transfer system and method - Google Patents
Fluid transfer system and method Download PDFInfo
- Publication number
- GB2575765A GB2575765A GB1721205.1A GB201721205A GB2575765A GB 2575765 A GB2575765 A GB 2575765A GB 201721205 A GB201721205 A GB 201721205A GB 2575765 A GB2575765 A GB 2575765A
- Authority
- GB
- United Kingdom
- Prior art keywords
- milk
- fluid
- cooling
- coolant
- zone
- 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.)
- Granted
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000012546 transfer Methods 0.000 title claims description 18
- 238000001816 cooling Methods 0.000 claims abstract description 92
- 239000008267 milk Substances 0.000 claims abstract description 80
- 235000013336 milk Nutrition 0.000 claims abstract description 80
- 210000004080 milk Anatomy 0.000 claims abstract description 80
- 239000002826 coolant Substances 0.000 claims abstract description 51
- 230000008569 process Effects 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000005065 mining Methods 0.000 claims abstract description 3
- 235000013405 beer Nutrition 0.000 claims abstract 2
- 238000010438 heat treatment Methods 0.000 claims description 23
- 238000003860 storage Methods 0.000 claims description 21
- 230000009467 reduction Effects 0.000 claims description 17
- 238000012545 processing Methods 0.000 claims description 13
- 241001465754 Metazoa Species 0.000 claims description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- 241000124008 Mammalia Species 0.000 claims description 6
- 239000013529 heat transfer fluid Substances 0.000 claims description 5
- 230000036760 body temperature Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000013124 brewing process Methods 0.000 claims 1
- 238000012824 chemical production Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 2
- 239000002918 waste heat Substances 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 241000283690 Bos taurus Species 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000012864 cross contamination Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 241000282832 Camelidae Species 0.000 description 1
- 241000283707 Capra Species 0.000 description 1
- 241001494479 Pecora Species 0.000 description 1
- 230000001668 ameliorated effect Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 235000012041 food component Nutrition 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- -1 preferably Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000011850 water-based material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/20—Geothermal collectors using underground water as working fluid; using working fluid injected directly into the ground, e.g. using injection wells and recovery wells
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/30—Geothermal collectors using underground reservoirs for accumulating working fluids or intermediate fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T50/00—Geothermal systems
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Dairy Products (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
A fluid at temperature T1 is passed through a cooling zone 2 and reduced to temperature T2 either by direct or indirect contact with a coolant at temperature T3, which is lower than T2, the coolant being cooled by a ground source heat pump 7. The fluid to be cooled may be milk, beer or water used in laundry, chemical or mining processes. The cooling circuit may include a coolant tank 5 and heat booster 6 with the waste heat being used to heat fluid, possibly water, via heat exchanger 11.
Description
FLUID TRANSFER SYSTEM AND METHOD
This invention relates to a fluid transfer system, to a method of transferring a fluid and particularly to an improvement in the management of energy in a fluid transfer process. The system, method and process are particularly useful where the fluid is milk.
Many processes in a wide range of industries, for example chemical, foodstuff, cleaning/laundry, brewing, manufactured goods, energy, power generation and mining industries involve the transfer of fluid from a first point to a second point in which the enthalpy content of the fluid, for example water, water-based materials and organic fluids is intended to be different at the two points in the process. Utilization, particularly recovery and re-use, of energy which otherwise might be released outside the process is desirable or economically necessary and provides an environmental benefit. Many such processes are energy intensive and utilization of enthalpy in the fluid used within such processes is important. A wide range of methods and apparatus are known for managing heat transfer within processes and also inputting or removing heat from processes including heat transfer apparatus, refrigeration equipment and the like.
Enthalpy management is especially important in milking processes. Milk from cows, goats, sheep, camels and other mammals from which milk is extracted for human use or consumption is at body temperature which typically is around 37°C. Extracted milk is processed and stored in bulk in a refrigerated holding tank in readiness for the stored milk to be collected, for example by tanker, and subsequently passes into the food chain. The milk must be extracted, processed and stored under such conditions as to ensure the total bacterial count does not exceed certain stipulated levels and is typically cooled to and stored at a temperature of 4°C or under.
Milk is transported to the holding tank via a line in which it may be pre-cooled prior to passing to the storage tank. Typically, milk is precooled to a temperature of 10°C or lower, for example by passing through a heat exchanger or other cooling apparatus and from there passed to a refrigerated storage tank where it is cooled to, typically, 4°C or lower. The storage tank may be some distance from the zone in which the milk is extracted from the animal particularly in larger scale commercial dairies.
Large quantities of energy are required to cool the milk sufficiently rapidly and to the desired temperature during transportation from the mammal to the storage tank. The required cooling capacity depends on a range of factors in addition to the initial temperature of the milk at extraction and the desired final temperature of the milk in the storage tank including the volume and flow rate of milk passing through the processing system and the ambient external temperature.
Cooling in the storage tank is typically achieved using a conventional refrigeration process. The milk is typically cooled by passing it through a pre-cooler apparatus, typically a heat exchanger, for example a flat plate heat exchanger, prior to it reaching the storage tank to cool the milk rapidly to a temperature typically under 10°C thereby to reduce the cooling load in the storage tank. Cooling in the pre-cooler apparatus is suitably achieved using a heat transfer fluid, for example a water and glycol mix to reduce the temperature of the milk as much as possible prior to it being passed to the storage tank.
Large quantities of electrical energy are consumed in cooling the heat transfer fluid to a requisite degree which adds cost and is environmentally undesirable. Further, conventional milk processing apparatus will include ice-making apparatus to provide additional rapid cooling from time to time where an insufficient drop in temperature is achieved in the pre-cooling apparatus. Ice may therefore be used to supplement the cooling effect of the pre-cooler either in or downstream of the pre-cooler apparatus. Production of ice also involves large quantities of electricity and, in acting as a heat sink to reduce the temperature of the milk as it passes through the heat pre-cooling apparatus or elsewhere in the process, ice melts and energy transferred to it is consumed as latent heat of fusion and lost to the system.
The energy requirements for cooling and ice-making are very high with concomitant costs, size and rating of refrigeration and chilling equipment. With volatile and increasing energy prices, running costs increase and are also volatile depending on market conditions.
In addition to energy costs for cooling the milk, a milking process has extensive requirements for hot water for plant washing, bulk tank washing and other hygiene requirements giving rise to additional and substantial energy requirements and running costs.
The economics of milk production typically involve very small margins due to competitive and supply chain pressures. A need exists to optimise energy usage and to reduce overall energy costs in a milking process especially in large-scale operations.
We have now found drawbacks associated with energy intensive processes involving fluid transfer and heat transfer from the fluid, for example a milk processing system may be ameliorated by employing a ground source heat pump in an integrated manner enabling significant energy savings to be made.
The invention provides in a first aspect a process for transfer of a fluid from a first zone where the fluid is at a temperature T to a second zone where the fluid is at a temperature T2 wherein T2 is lower than comprising passing the fluid through communication means which connect the first zone and the second zone and which comprises a cooling zone wherein some enthalpy from the fluid is removed in the cooling zone by direct or indirect contact with a coolant at a temperature T3 which is below the temperature of the fluid in the cooling zone and wherein the coolant is cooled at least in part using a ground source heat pump.
In a second aspect the invention provides a process for cooling milk comprising providing a refrigerated zone for milk storage, receiving milk from a lactating animal at the animal’s body temperature, passing the milk through a temperature reduction zone to cool the milk to under 10°C and storing the cooled milk in the refrigerated zone wherein energy employed in providing the refrigerated zone and/or the temperature reduction zone is derived at least in part from a ground source heat pump.
The invention provides in a third aspect an energy transfer system for transfer of a fluid from a first zone where the fluid is at a temperature Tt to a second zone where the fluid is at a temperature T2 wherein T2 is lower than the system comprising providing fluid communication means which connect the first zone and the second zone, comprising a cooling apparatus comprising a conduit for carrying a coolant and being adapted to remove enthalpy from the fluid by direct or indirect contact with the coolant and further comprising a ground source heat pump adapted to cool the coolant.
In a fourth aspect the invention provides a milk processing system comprising a milk supply conduit adapted to receive milk from a mammal, a temperature reduction device in fluid connection with the milk supply conduit and a refrigerated storage tank in fluid connection with the temperature reduction device for receiving cooled milk, the said temperature reduction device being configured to cool the milk to a temperature of 10°C or lower and the refrigerated storage tank to cool the cooled milk further to a temperature not exceeding 4°C, and a cooling system adapted to cool milk passing through the temperature reduction device and, optionally, milk stored in the refrigerated storage tank, the cooling system comprising a coolant circuit for carrying a coolant adapted to remove enthalpy from the milk by direct or indirect contact with the coolant in the temperature reduction device further comprising a ground source heat pump adapted to cool the coolant.
The invention further provides for the use of a ground source heat pump in a cooling circuit to cool a fluid for example milk.
In a preferred embodiment, the coolant is cooled to a substantial degree and preferably entirely using a ground source heat pump. Advantageously, capital investment and variable costs, for example electricity or other energy costs, associated with providing conventional cooling apparatus and processes may be reduced or avoided. The costs associated with providing a ground source heat pump for the cooling process is recouped over a relatively short period due to the reduced capital investment and higher variable or running costs associated with conventional cooling apparatus and methods, providing significant economic and environmental benefits.
Preferably, the fluid from which enthalpy is removed is in indirect contact with the cooling circuit to avoid the risk of cross-contamination between the fluid and coolant. Indirect contact is especially important where the fluid to be cooled is a food product or component or otherwise subject to health and safety regulations on consumption by animals or people.
The cooling system provides cooling in the temperature reduction device to pre-cool the milk and may also be configured to provide a cooling effect in whole or part for the storage tank. As energy for this cooling process is derived in part or whole from ground a source heat pump(s), the demand for electricity to power refrigeration apparatus and ice-making apparatus may be reduced significantly.
Advantageously, heat contributed by the ground source heat pump may be employed to reduce demands of the milking process apparatus on the external electricity supply thereby reducing costs and may also be used heat water for consumption by cattle or for cleaning and other hygiene related activities or for temperature control of the environment in which milking is carried out. Lower costs associated with lower electricity requirements together with financial contributions for example from government, for adopting environmentally beneficial technology changes the cost structure making milk production more economically viable which safeguards employment and milk supply.
The coolant may be any known coolant to provide the desired cooling capacity and is preferably a mixture of water and glycol for example comprising 30% by volume water.
The cooling circuit in which the coolant circulates and is cooled by the ground source heat pump is also suitably in direct or indirect contact with a heating circuit such that enthalpy which has passed to the coolant from the fluid, for example milk, may be transferred into the heating circuit for the enthalpy to be used usefully, for example to provide a heat source to raise ambient temperature or to heat water to produce warm and/or hot water. Preferably, the cooling circuit and heating circuit are in indirect contact to avoid the risk of cross-contamination between fluids in the two circuits. In particular, the coolant in the cooling circuit is also suitably hydraulically separate from the heated fluid, preferably, water in the heating circuit.
In a milking process the milk is extracted from the animal and is typically around body temperature and in excess of 30°C. After passing through the cooling zone, preferably a plate heat exchanger, the milk has been cooled to a temperature less than 10°C, preferably from 4 to 10°C. In this case T1 is greater than 30°C and T2 is lower than 10 °C. Suitably, the coolant on entering the cooling zone is at a temperature less than 0°C, for example -2C or lower. The coolant may leave the cooling zone, having received enthalpy from the milk, at a temperature in excess of 10°C.
Suitably, the fluid being cooled and the coolant are hydraulically separate to avoid contamination.
The cooling circuit suitably comprises a loop which in use contains a coolant and which passes through the cooling zone and via ground source heat pumps. The circuit additionally preferably comprises at least one, preferably a plurality, for example 3, cooling tanks which are located downstream of the cooling zone and upstream of the ground source heat pumps. The cooling tanks allow the coolant which has been warmed by receiving enthalpy in the cooling zone to be held and may act as a buffer to provide a holding zone for coolant to ensure appropriate the flow of the coolant may be regulated as the required according to changing demands for cooling capacity in the cooling zone. The warmed coolant suitably may cool and leaves the cooling tank at a lower temperature than that at which it enters the cooling tank.
Suitably, the cooling tank(s) allow a different rate of flow of coolant to and from the heat pump(s) such that the flow rates may be independent of the cooling load required, improving energy efficiency of the system. Further, where cooling loads are low, the cooling tank(s) may be used to reduce or prevent short cycling of the heat pump(s) by providing a large thermal cooling mass without needing to have the heat pump(s) running, improving energy efficiency.
The cooling circuit may further comprise a heat booster downstream of the cooling tank in which energy may be provided from an environmentally source for example an air source heat pump or a ground source heat pump. The coolant may leave the heat booster at a temperature of around 10°C and pass to the ground source heat pump.
In one embodiment, multiple the ground source heat pumps may be employed, preferably arranged in parallel with each other. The cooling circuit passes though the heat pumps and suitably, the coolant enters at a temperature of 5 to 15°C, for example around 10°C and is cooled to a temperature of less than 0°C, preferably -2°C or less and returned to the cooling zone, suitably via the cooling tank(s).
Enthalpy removed from the coolant in the cooling circuit is suitably transferred into a heating circuit to utilise the stored enthalpy and may be used to provide hot or warm water for consumption, cleaning, central heating or other usage or for direct heating. Suitably, the ground source heat pump simultaneously removes enthalpy from the fluid and imparts enthalpy to a heat transfer fluid in the heating circuit.
The process and system is suitably controlled automatically and equipped with appropriate controls and a processor or control unit programmed to operate the apparatus in accordance with desired operating procedures.
The invention is described by reference to the following accompanying drawing in which:
Figure 1 shows a schematic representation of a system according to the invention;
Figure 2 shows a schematic representation of a milk processing system according to the invention.
In Figure 1 a fluid for example milk at temperature is passed along conduit 1 through cooling zone 2, for example a plate heat exchanger, and exits in line 3 at a temperature of T2, lower than temperature in the direction shown by the arrows. Suitably, the fluid is milk and arrives at the cooling zone having been extracted from a mammal. The cooled milk is suitably passed to a storage tank for subsequent collection.
The cooling effect in cooling zone 2 is provided by a cooling circuit 4 which comprises a loop with a coolant circulating in the loop in the direction shown by the arrows. The cooling circuit 4 comprises a cooling tank 5, which preferably comprises a plurality of cooling tanks linked in series, a heat booster 6 and passes to a ground source heat pump 7. Suitably, the ground source heat pump 7 comprises multiple heat pumps, for example from 2 to 6 according to the level of cooling that may be required in the fluid processing system. The coolant is suitably cooled to below 0°C and preferably around -2°C in the heat pump and returns to the cooling tank 5 to cooling zone 2.
Enthalpy removed from the fluid into the coolant is then suitably transferred to a heating circuit 10 which comprises a heating fluid, for example water, suitably by indirect contact between the coolant and heating fluid. The heating fluid suitably leaves the heat pump at a temperature of at least 30°C, preferably at least 50°C and passes to a heating tank 11 where enthalpy is transferred to a further circuit 15 comprising a storage tank 16 and an outlet for usage of the enthalpy content directly, for example to heat a space or indirectly by providing warm or hot water for a range of uses such as central heating, animal drinking water, cleaning, de-icing and the like.
The heating tank 11 where heat transfer occurs is an optional element in the further circuit and the heating circuit 10 may be employed itself as the source of hot water. The heating tank 11 enables the water used to be hydraulically separate from the fluid in the heating circuit and is suitably employed if the water is to be consumed by people or animals.
Figure 2 shows a milk production process according to the invention in which milk is extracted from a mammal, for example in a milking parlour 20. The milk is passed along conduit 21 to a cooling device 22, for example a plate heat exchanger where the milk leaves at a temperature T2 of lower than 10°C, and especially at a temperature of under 5°C via line 23. The greater the temperature reduction in the cooling device, the lesser requirement for a chilling zone 24 in which ice is employed to rapidly cool the milk. Whilst a chilling zone is suitably included in the system, this is optional and is primarily included to provide a back-up and auxiliary source of cooling for peak loads or emergencies and is suitably utilised to a minimum extent thereby saving costs associated with producing ice. The milk passes to refrigerated storage tank 25 from where it is periodically collected for downstream distribution.
The cooling device 22 is cooled by heat transfer with a cooling circuit 4 as shown in Figure 1.
Claims (20)
1. A process for transfer of a fluid from a first zone where the fluid is at a temperature to a second zone where the fluid is at a temperature T2wherein T2 is lower than comprising passing the fluid through communication means which connect the first zone and the second zone and which comprises a cooling zone wherein some enthalpy from the fluid is removed in the cooling zone by direct or indirect contact with a coolant at a temperature T3 which is below the temperature of the fluid in the cooling zone and wherein the coolant is cooled at least in part using a ground source heat pump.
2. A process according to claim 1 wherein the fluid is selected from milk in a milking process, beer in a brewing process, water in a laundry process, water in a chemical production process, water in a mining process.
3. A process for cooling milk comprising providing a refrigerated zone for milk storage, receiving milk from a lactating animal at the animal’s body temperature, passing the milk through a temperature reduction zone to cool the milk to under 10°C and storing the cooled milk in the refrigerated zone wherein energy employed in providing the refrigerated zone and/or the temperature reduction zone is derived at least in part from a ground source heat pump.
4. A process according to any one of the preceding claims wherein the coolant is cooled to a substantial degree using the ground source heat pump.
5. A process according to any one of the preceding claims wherein the coolant is cooled entirely using the ground source heat pump.
6. A process according to any one of the preceding claims wherein the coolant is in a cooling circuit which passes through a ground source heat pump and is in direct or indirect contact with a heating circuit such that enthalpy which has passed to the coolant from the fluid is transferable into the heating circuit enabling use of the transferred enthalpy for heating.
7. A process according to claim 6 wherein the ground source heat pump simultaneously removes enthalpy from the fluid and imparts enthalpy to a heat transfer fluid in the heating circuit.
8. A process according to any one of the preceding claims wherein the fluid is at a temperature in excess of 30°C and after passing through the cooling zone, is at a temperature less than 10°C.
9. A process according to any claim 8 wherein T2 is from 4 to 10°C.
10. An energy transfer system for transfer of a fluid from a first zone where the fluid is at a temperature Ή to a second zone where the fluid is at a temperature T2 wherein T2 is lower than the system comprising providing fluid communication means which connect the first zone and the second zone, comprising a cooling apparatus comprising a conduit for carrying a coolant and being adapted to remove enthalpy from the fluid by direct or indirect contact with the coolant and further comprising a ground source heat pump adapted to cool the coolant.
11. A milk processing system comprising a milk supply conduit adapted to receive milk from a mammal, a temperature reduction device in fluid connection with the milk supply conduit and a refrigerated storage tank in fluid connection with the temperature reduction device for receiving cooled milk, the said temperature reduction device being configured to cool the milk to a temperature of 10°C or lower and the refrigerated storage tank to cool the cooled milk further to a temperature not exceeding 4°C, and a cooling system adapted to cool milk passing through the temperature reduction device and, optionally, milk stored in the refrigerated storage tank, the cooling system comprising a coolant circuit for carrying a coolant adapted to remove enthalpy from the milk by direct or indirect contact with the coolant in the temperature reduction device further comprising a ground source heat pump adapted to cool the coolant.
12. A milk processing system according to claim 11 wherein the cooling circuit suitably comprises a loop which in use contains a coolant and which passes through the cooling zone and via the ground source heat pump.
13. A milk processing system according to claim 12 wherein the cooling circuit comprises at least one cooling tank located downstream of the temperature reduction device and upstream of the ground source heat pump.
14. A milk processing system according to claim 13 wherein the cooling circuit comprises at least 3 cooling tanks.
15. A milk processing system according to any one of claims 11to 14 comprising a heat booster downstream of the cooling tank
16. A milk processing system according to any one of claims 11 to 15 comprising
5 multiple ground source heat pumps arranged in parallel with each other.
17. An energy transfer system according to claim 10 or a milk processing system according to any one of claims 11 to 16 wherein the ground source heat pump constitutes the only apparatus for cooling the coolant.
18. Use of a ground source heat pump in a cooling circuit to cool a fluid for example milk.
19. Use according to claim 18 wherein the ground source heat pump simultaneously
15 removes enthalpy from the fluid and imparts enthalpy to a heat transfer fluid in the heating circuit.
20. A process, system or use according to any one of the preceding claims in which the coolant comprises a mixture of water and glycol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1721205.1A GB2575765B (en) | 2017-12-18 | 2017-12-18 | Fluid transfer system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1721205.1A GB2575765B (en) | 2017-12-18 | 2017-12-18 | Fluid transfer system and method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB201721205D0 GB201721205D0 (en) | 2018-01-31 |
| GB2575765A true GB2575765A (en) | 2020-01-29 |
| GB2575765B GB2575765B (en) | 2022-09-14 |
Family
ID=61009192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1721205.1A Ceased GB2575765B (en) | 2017-12-18 | 2017-12-18 | Fluid transfer system and method |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2575765B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009013507A1 (en) * | 2007-07-24 | 2009-01-29 | P.W. Circuits Limited | Treatment apparatus |
| US20100108290A1 (en) * | 2008-10-28 | 2010-05-06 | Trak International, Llc | Methods and equipment for heating and cooling building zones |
| WO2012075583A1 (en) * | 2010-12-07 | 2012-06-14 | Joseph John Matula | Geothermal system |
| WO2012151477A1 (en) * | 2011-05-04 | 2012-11-08 | Gtherm Inc. | System and method of managing cooling elements to provide high volumes of cooling |
-
2017
- 2017-12-18 GB GB1721205.1A patent/GB2575765B/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009013507A1 (en) * | 2007-07-24 | 2009-01-29 | P.W. Circuits Limited | Treatment apparatus |
| US20100108290A1 (en) * | 2008-10-28 | 2010-05-06 | Trak International, Llc | Methods and equipment for heating and cooling building zones |
| WO2012075583A1 (en) * | 2010-12-07 | 2012-06-14 | Joseph John Matula | Geothermal system |
| WO2012151477A1 (en) * | 2011-05-04 | 2012-11-08 | Gtherm Inc. | System and method of managing cooling elements to provide high volumes of cooling |
Non-Patent Citations (2)
| Title |
|---|
| "Role of Refrigeration in Dairy Industry", Mandal et al., Cooling India, 15th August 2017. * |
| "Well Water Pre-Coolers", Scott Sanford, University of Wisconsin, 2003. * |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2575765B (en) | 2022-09-14 |
| GB201721205D0 (en) | 2018-01-31 |
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