US2256940A - Air conditioning - Google Patents
Air conditioning Download PDFInfo
- Publication number
- US2256940A US2256940A US302223A US30222339A US2256940A US 2256940 A US2256940 A US 2256940A US 302223 A US302223 A US 302223A US 30222339 A US30222339 A US 30222339A US 2256940 A US2256940 A US 2256940A
- Authority
- US
- United States
- Prior art keywords
- air
- water
- hygroscopic liquid
- liquid
- heat exchange
- 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.)
- Expired - Lifetime
Links
- 238000004378 air conditioning Methods 0.000 title description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 36
- 239000007788 liquid Substances 0.000 description 32
- 238000001816 cooling Methods 0.000 description 15
- 230000001143 conditioned effect Effects 0.000 description 14
- 230000003750 conditioning effect Effects 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
- F24F3/1417—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with liquid hygroscopic desiccants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only
Definitions
- This invention relates to air conditioning and is particularly directed to a method and system I of conditioning air in residences and the like in connection with radiator heating systems.
- a principal purpose of the invention is the provision of an economical air conditioning system suitable for use in residences and similar buildings.
- a further object of the invention is to provide an air conditioning system utilizing as fullyas possible the essential elements of a radiator heat ing system.
- Another purpose of the invention is the economical utilization of available cooling water for the conditioning of air without'the use of mechanical refrigeration.
- the invention comprises an air conditioning system in which the moisture content of the air is reduced by direct contact with a hygroscopic liquid.
- This air is then cooled, preferably adiabatically or substantially so, by evaporative cooling contact with water from a suitable source of supply such as well water or city water.
- the water from the adiabatic cooling operation is utilized for direct cooling of the conditioned space.
- a part of this water may advantageously be utilized for cooling the hygroscopic liquid, either while the hygroscopic liquid is being contacted with the air, or by passing the hygroscopic liquid in heat exchange relation with the water while the water is subjected to the evaporative cooling effect of a stream of air, or both.
- the hygroscopic liquid is preferably maintained at a suitable concentration by evaporation of water therefrom in a boiler, particularly in a boiler suitable for use in cold weather in supplying heated fluid, for example, hot water or steam, to heating radiators in the conditioned space.
- the radiators are likewise preferably utilized in warm or humid weather for the direct cooling of the conditioned space by means of the water from the adiabatic air cooling zone.
- the conditioning units include adehumidifier I, an air cooling unit 2, and 'a hygroscopic liquid cooling unit 3.
- An air stream to be supplied to the conditioned space in floors B and C is forced by fan 4 into dehumidifier l where it is contacted with a hygroscopic liquid such as a solution of calcium chloride, sprayed from spray members 5 downwardlyover the exterior of extended surface coils 6, counter-current to the air stream.
- a hygroscopic liquid such as a solution of calcium chloride
- the evaporative cooling effect of the water in contact with a stream of air supplied by fan l5 removes heat from the hygro scopic liquid coming from sump l3 andfrom the concentrator through pipe l6.
- the cool air from cooling unit 2 passes through suitable conduits ll, controlled by dampers I8, into conditioned spaces B and C.
- a portion of the cooled water collected in sump I0 is .caused to flow through direct cooling radiators l9 in'the conditioned spaces.
- conditioned spaces is circulated over radiators I! by means of fans 20. After passing through the radiators I! the water is sent to waste.
- a suitable proportion of the hygroscopic liquid from sump I3 is .passed to boiler 2
- the boiler is the same as is used in cold weather for heating and circulating hot fluid to radiators I! through conduits 23 and 24, When the system is used for heating valves 30, SI, 32 and 33 are closed and valves 34 and 35 are opened.
- the concentration of the hygroscopic liquid leaving the boiler is maintained at the desired point by means of thermostat 25 which regulates fuel burner 26 so as to maintain the liquid in the boiler at a boiling point corresponding to th desired concentration.
- the concentrated liquid and vapor pass Preferably, the air in the through conduit 21 to separating pan 28 wherethe vapor is released.
- the liquid flows from the pan through conduit l6 to the heat exchanger 22 and thence to the dehumidifier recirculating system through pump H.
- the concentrated liquid is carried to separating pan 28 by the vapor lift effect of the vapor generated in the boiler.
- the concentrated liquid outlet pipe 21 may be connected directly to the intake of pump it andthe vapor generated in the boiler may then be exhausted directly to the atmosphere.
- I claim: 1. A method of conditioning air which com prises reducing ,the moisture content of the air by direct contact with a hygroscopic liquid, thereafter subjecting the air to direct contact with an extended surface of water in an amount in excess of the amount of water evaporated during said,
- a method of conditioning air which comprises reducing the moisture content of the air by direct contact with a hygroscopic liquid, thereafter subjecting the air to direct contact with an extended surface of water in an amount in excess of the amount of water evaporated during said contact, passing a portion of said water into heat exchange relation with said hygroscopic liquid while the hygroscopic liquid is being contacted with the air, supplying said air to the space to be conditioned and bringing a portion of said water into heat exchange relation with the air in said space.
- a method of conditioning air which comprises reducing the moisture content of the air by direct contact with a hygroscopic liquid, thereafter subjecting the air to direct contact with an extended surface of 'water in an amount in excess of the amount of water'evaporated during said contact, passing a portion of said water into heat exchange relation with said hygroscopic liquid while the hygroscopic liquid is being contacted with the air and thereafter passing said water into heat exchange relation with the hygroscopic liquid while subjecting said water to evaporative cooling contact with a stream of air. supplyin said air to the space to be conditioned and bringing a portion of said water into heat exchange relation with the air in said space.
- Air conditioning system for residences and the like comprising means for bringing a stream or air successively into contact with a hygroscopic liquid and an extended surface water stream. means for bringing at least a portion of the water which has been contacted with the air stream into heat exchange relation with the hygroscopic liquid, heat exchange elements positioned in the space to be conditioned, and means for supplying at least a portion of the water which has been contacted with the air stream to said heat exchange elements.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Central Air Conditioning (AREA)
- Drying Of Gases (AREA)
Description
Sept. 23, 1 R. B.P. CRAWFORD AIR CONDITIONING Filed Oct. 31, 1939 QHH nu al DU -U any v Patented Sept. 23, 1941 UNITED STATES PATENT OFFICE Robert B. P. Crawford, Athens, Ga. v
Application October 31, 1939, Serial No. 302,223
Claims.
This invention relates to air conditioning and is particularly directed to a method and system I of conditioning air in residences and the like in connection with radiator heating systems.
A principal purpose of the invention is the provision of an economical air conditioning system suitable for use in residences and similar buildings.
A further object of the invention is to provide an air conditioning system utilizing as fullyas possible the essential elements of a radiator heat ing system.
Another purpose of the invention is the economical utilization of available cooling water for the conditioning of air without'the use of mechanical refrigeration.
In general, the invention comprises an air conditioning system in which the moisture content of the air is reduced by direct contact with a hygroscopic liquid. This air is then cooled, preferably adiabatically or substantially so, by evaporative cooling contact with water from a suitable source of supply such as well water or city water. The water from the adiabatic cooling operation is utilized for direct cooling of the conditioned space. A part of this water may advantageously be utilized for cooling the hygroscopic liquid, either while the hygroscopic liquid is being contacted with the air, or by passing the hygroscopic liquid in heat exchange relation with the water while the water is subjected to the evaporative cooling effect of a stream of air, or both.
The hygroscopic liquid is preferably maintained at a suitable concentration by evaporation of water therefrom in a boiler, particularly in a boiler suitable for use in cold weather in supplying heated fluid, for example, hot water or steam, to heating radiators in the conditioned space. The radiators are likewise preferably utilized in warm or humid weather for the direct cooling of the conditioned space by means of the water from the adiabatic air cooling zone.
The invention will be more particularly described for the purpose of illustration with reference to the accompanying drawing which is a semi-diagrammatic representation of an air con- In the particular form of the system illustrated in the drawing, the conditioning units include adehumidifier I, an air cooling unit 2, and 'a hygroscopic liquid cooling unit 3.
An air stream to be supplied to the conditioned space in floors B and C is forced by fan 4 into dehumidifier l where it is contacted with a hygroscopic liquid such as a solution of calcium chloride, sprayed from spray members 5 downwardlyover the exterior of extended surface coils 6, counter-current to the air stream.
On leaving the dehumidifier the air passes through filter I and spray eliminator 8 and thence to the cooling unit where it is brought into contact with an extended surface of water from any suitable source at sprays 9.
A portion of the excesscooling water, which is Q collected in sump i0, is passed through extended surface coils G where it removes from the hygroscopic liquid heat absorbed by the liquid from the air. From coils 6 the water is sprayed through sprays ll over the exterior of extended surface coils 12 through which hygroscopic liquid is circulated from sump l3 to sprays J by means of pump H. The evaporative cooling effect of the water in contact with a stream of air supplied by fan l5 removes heat from the hygro scopic liquid coming from sump l3 andfrom the concentrator through pipe l6.
The cool air from cooling unit 2 passes through suitable conduits ll, controlled by dampers I8, into conditioned spaces B and C. A portion of the cooled water collected in sump I0 is .caused to flow through direct cooling radiators l9 in'the conditioned spaces. conditioned spaces is circulated over radiators I! by means of fans 20. After passing through the radiators I! the water is sent to waste.
A suitable proportion of the hygroscopic liquid from sump I3 is .passed to boiler 2| through heat exchanger 22 counter-currently to the hot conditioning-system embodying the principles ofthe centrated liquid leaving the separating pan 28. Preferably, the boiler is the same as is used in cold weather for heating and circulating hot fluid to radiators I! through conduits 23 and 24, When the system is used for heating valves 30, SI, 32 and 33 are closed and valves 34 and 35 are opened.
The concentration of the hygroscopic liquid leaving the boiler is maintained at the desired point by means of thermostat 25 which regulates fuel burner 26 so as to maintain the liquid in the boiler at a boiling point corresponding to th desired concentration.
The concentrated liquid and vapor pass Preferably, the air in the through conduit 21 to separating pan 28 wherethe vapor is released. The liquid flows from the pan through conduit l6 to the heat exchanger 22 and thence to the dehumidifier recirculating system through pump H. The concentrated liquid is carried to separating pan 28 by the vapor lift effect of the vapor generated in the boiler. If desired the concentrated liquid outlet pipe 21 may be connected directly to the intake of pump it andthe vapor generated in the boiler may then be exhausted directly to the atmosphere.
It will be obvious that the operation of the system may readily be controlled by means of humidostats and thermostats positioned at suitable points in the conditioned air conduits and in the conditioned spaces and such controls,:
which may be of a type well known in the art, are not shown or described herein.
I claim: 1. A method of conditioning air which com prises reducing ,the moisture content of the air by direct contact with a hygroscopic liquid, thereafter subjecting the air to direct contact with an extended surface of water in an amount in excess of the amount of water evaporated during said,
contact, passing a portion or said water into heat exchange relation with said hygroscopic liquid.
supplying said air to the space to be conditioned and bringinga portion of said water into heat exchange relation with the air in said space.
2. A method of conditioning air which comprises reducing the moisture content of the air by direct contact with a hygroscopic liquid, thereafter subjecting the air to direct contact with an extended surface of water in an amount in excess of the amount of water evaporated during said contact, passing a portion of said water into heat exchange relation with said hygroscopic liquid while the hygroscopic liquid is being contacted with the air, supplying said air to the space to be conditioned and bringing a portion of said water into heat exchange relation with the air in said space.
3. A method 0! conditioning air which com-.
prises reducing the moisture content oi the air by direct contact with a hygroscopic liquid, thereafter subjecting the air to direct contact with an extended surface of water in an amount in excess of the amount or water evaporated during said contact, passing a portion or said water into heat exchange relation with said hygroscopic liquid ,while subjecting said water to evaporative cooling contact with a stream of air, supplying said air to the space to be conditioned and bringing a portionot said water into heat exchange relation with the air in said space.
4. A method of conditioning air which comprises reducing the moisture content of the air by direct contact with a hygroscopic liquid, thereafter subjecting the air to direct contact with an extended surface of 'water in an amount in excess of the amount of water'evaporated during said contact, passing a portion of said water into heat exchange relation with said hygroscopic liquid while the hygroscopic liquid is being contacted with the air and thereafter passing said water into heat exchange relation with the hygroscopic liquid while subjecting said water to evaporative cooling contact with a stream of air. supplyin said air to the space to be conditioned and bringing a portion of said water into heat exchange relation with the air in said space.
5. Air conditioning system for residences and the like comprising means for bringing a stream or air successively into contact with a hygroscopic liquid and an extended surface water stream. means for bringing at least a portion of the water which has been contacted with the air stream into heat exchange relation with the hygroscopic liquid, heat exchange elements positioned in the space to be conditioned, and means for supplying at least a portion of the water which has been contacted with the air stream to said heat exchange elements.
ROBERT B. P.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US302223A US2256940A (en) | 1939-10-31 | 1939-10-31 | Air conditioning |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US302223A US2256940A (en) | 1939-10-31 | 1939-10-31 | Air conditioning |
Publications (1)
Publication Number | Publication Date |
---|---|
US2256940A true US2256940A (en) | 1941-09-23 |
Family
ID=23166831
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US302223A Expired - Lifetime US2256940A (en) | 1939-10-31 | 1939-10-31 | Air conditioning |
Country Status (1)
Country | Link |
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US (1) | US2256940A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2493911A (en) * | 1944-11-30 | 1950-01-10 | Pan American Refining Corp | Separation by adsorption |
US2521859A (en) * | 1945-01-11 | 1950-09-12 | Parkersburg Rig & Reel Co | Oil emulsion treater |
US2712927A (en) * | 1949-11-25 | 1955-07-12 | York Corp | Air conditioning methods |
US2769313A (en) * | 1954-04-23 | 1956-11-06 | Goetz Michael Bernard | Hygroscopic air conditioner |
US2784571A (en) * | 1957-03-12 | Evaporative air cycle cooler | ||
US2981078A (en) * | 1958-07-07 | 1961-04-25 | John K Fairbairn | Humidity control and cooling system |
US3009331A (en) * | 1958-05-05 | 1961-11-21 | John B Hewett | Air conditioning systems |
US4926656A (en) * | 1989-01-11 | 1990-05-22 | Aztec Sensible Cooling, Inc. | Integrated wet bulb depression air cooler |
US4959970A (en) * | 1987-05-12 | 1990-10-02 | Gershon Meckler | Air conditioning apparatus |
US20110256822A1 (en) * | 2010-04-16 | 2011-10-20 | Carlson Andrew B | Evaporative Induction Cooling |
US20140170951A1 (en) * | 2012-10-30 | 2014-06-19 | Nhn Business Platform Corp. | Apparatus and method for cooling server room using outside air |
-
1939
- 1939-10-31 US US302223A patent/US2256940A/en not_active Expired - Lifetime
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2784571A (en) * | 1957-03-12 | Evaporative air cycle cooler | ||
US2493911A (en) * | 1944-11-30 | 1950-01-10 | Pan American Refining Corp | Separation by adsorption |
US2521859A (en) * | 1945-01-11 | 1950-09-12 | Parkersburg Rig & Reel Co | Oil emulsion treater |
US2712927A (en) * | 1949-11-25 | 1955-07-12 | York Corp | Air conditioning methods |
US2769313A (en) * | 1954-04-23 | 1956-11-06 | Goetz Michael Bernard | Hygroscopic air conditioner |
US3009331A (en) * | 1958-05-05 | 1961-11-21 | John B Hewett | Air conditioning systems |
US2981078A (en) * | 1958-07-07 | 1961-04-25 | John K Fairbairn | Humidity control and cooling system |
US4959970A (en) * | 1987-05-12 | 1990-10-02 | Gershon Meckler | Air conditioning apparatus |
US4926656A (en) * | 1989-01-11 | 1990-05-22 | Aztec Sensible Cooling, Inc. | Integrated wet bulb depression air cooler |
US20110256822A1 (en) * | 2010-04-16 | 2011-10-20 | Carlson Andrew B | Evaporative Induction Cooling |
US8974274B2 (en) * | 2010-04-16 | 2015-03-10 | Google Inc. | Evaporative induction cooling |
US9591792B2 (en) | 2010-04-16 | 2017-03-07 | Google Inc. | Evaporative induction cooling system for a data center |
US10440861B2 (en) | 2010-04-16 | 2019-10-08 | Google Llc | Evaporative induction cooling system for a data center |
US11240938B2 (en) | 2010-04-16 | 2022-02-01 | Google Llc | Evaporative induction cooling system for a data center |
US20140170951A1 (en) * | 2012-10-30 | 2014-06-19 | Nhn Business Platform Corp. | Apparatus and method for cooling server room using outside air |
US9743559B2 (en) * | 2012-10-30 | 2017-08-22 | Nhn Business Platform Corp. | Apparatus and method for cooling server room using outside air |
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