121 |
CARBON DIOXIDE CO-FLUID |
US15496268 |
2017-04-25 |
US20170313954A1 |
2017-11-02 |
Louis Rebrovic |
A carbon dioxide/co-fluid mixture is provided for use in a refrigeration cycle in which the carbon dioxide is alternately absorbed and desorbed from the co-fluid. Suitable co-fluids are selected from the class of alkoxylated carboxylic amides, wherein the amides are cyclic or non-cyclic. It has been discovered that N-2,5,8,11-tetraoxadodecyl-2-pyrrolidinone and its homologs exhibit an advantageous property of a high rate of desorption at lower temperatures. |
122 |
Regenerator and regenerative refrigerator with insertion member |
US14610205 |
2015-01-30 |
US09759459B2 |
2017-09-12 |
Yoshikatsu Hiratsuka |
A regenerator accumulates cooling generated by expansion of refrigerant gas, and the regenerator includes a regenerator material which is made of a nonmagnetic material, a regenerator material which is made of a magnetic material, a container which includes a high temperature end and a low temperature end, and which accommodates the regenerator material made of the nonmagnetic material at the high temperature end side and the regenerator material made of the magnetic material at the low temperature end side. The container further accommodates an insertion member which narrows a passage area of the refrigerant gas flowing to a region accommodating the refrigerator material made of the magnetic material so that the passage area of the low temperature end side is narrower compared to the passage area of the high temperature end side. |
123 |
Refrigeration system with absorption cooling |
US14653783 |
2013-12-19 |
US09709302B2 |
2017-07-18 |
J. Scott Martin; Shitong Zha; Jeffrey Newel; Timothy E. Lukes; Willis L. McCullough |
A refrigeration system for use with refrigerated LT and MT display cases in facilities such as supermarkets, has an absorption chiller that uses waste heat from a nearby source to provide cooling to the refrigeration system to take advantage of the synergy and improve overall efficiency of the refrigeration system. The cooling provided by the absorption chiller may be in the form of a coolant (e.g. water, glycol, water-glycol mixture, etc.) that circulates between the chiller and one or more of a pre-cooler, sub-cooler or condenser in the refrigeration system in a manner that uses waste heat from a nearby source to reduce the need for installed condensing capacity in the refrigeration system and improve thermal efficiency and obtain cost savings. |
124 |
VEHICLE WASTE ENERGY HARVESTING SYSTEM |
US14934814 |
2015-11-06 |
US20170129307A1 |
2017-05-11 |
Feng Zhou; Gaohua Zhu |
An adsorption based system is provided for the selective cooling and heating of a vehicle compartment using by-product water collected from a power generating unit of a vehicle. The system may include a fuel cell stack and an exhaust conduit configured to transfer an exhaust stream from the fuel cell stack. A water reservoir stores by-product water collected from the exhaust stream. The system may include a coolant loop configured to circulate a coolant fluid. A detachable adsorption subsystem is in thermal communication with the coolant loop and the exhaust conduit, and may include an evaporator and an adsorbent bed. The adsorption subsystem is configured to: vaporize water from the water reservoir using the evaporator; adsorb the vaporized water, thereby cooling a portion of the coolant fluid; regenerate the adsorbent bed using heat from the exhaust stream to release water vapor; and direct the water vapor into the exhaust conduit. |
125 |
Hybrid system combining chiller and absorption heat pump |
US13940250 |
2013-07-11 |
US09464826B2 |
2016-10-11 |
Jen-Huang Tsai |
A hybrid system including an absorption heat pump and a compression chiller is provided. The absorption heat pump includes a generator, a first condenser, a first evaporator and an absorber connected in series. A first refrigerant is cooled by the first condenser and releases a first heat capacity, evaporated in the first evaporator and receives a second heat capacity, and mixed with a sorbent in the absorber and releases a third heat capacity. The compression chiller includes a compressor, a condensing module and a second evaporator connected in series. A second refrigerant is cooled by the condensing module and releases the second heat capacity, and evaporated in the second evaporator and receives a fourth heat capacity, wherein the condensing module is connected to the first evaporator, so that the second heat capacity released by the second refrigerant is transmitted to the first refrigerant in the first evaporator. |
126 |
High efficiency heat pump combining absorption and solution concentration change |
US13261944 |
2013-03-01 |
US09453664B2 |
2016-09-27 |
Vasilios Ethimios Styliaras |
High efficiency heat pump combining absorption and solution concentration change. The method gives a few times higher efficiency for heat transfer applications like heating—air conditioning. It is a heat and mechanical compression method using liquid electrolyte solutions, combining steam absorption, solution concentration change and mechanical compression. There is no heat consumption. Steam condensation is performed by a high concentration solution and vaporization from a low concentration solution reducing in this way the required mechanical compression of the known refrigeration cycle. The method may be used for work production too, exploiting moderate temperature heat sources. |
127 |
Air conditioning system with vapor bypassing |
US14851908 |
2015-09-11 |
US20160091228A1 |
2016-03-31 |
Amir A. Naqwi; Benjamin Y.H. Liu; Thuc M. Dinh |
An air conditioning system that includes an evaporator stage, first and second sorption stages that transition between active states and regeneration states, a compressor stage that receives a portion of a refrigerant vapor from the first or second sorption stage in the active state, a condenser stage that receives the refrigerant vapors from the compressor and from the first or second sorption stage in the regeneration state in a manner that bypasses the compressor stage, and where condenser stage also condenses the received refrigerant vapors and directs the refrigerant condensate to the evaporator stage. |
128 |
Dehumidifier for a compressor in compression-absorption heat pump system |
US13658150 |
2012-10-23 |
US09297560B2 |
2016-03-29 |
Seong-Ryong Park; Ji-Young Kim; Minsung Kim; Young-Jin Baik; Ho-Sang Ra; Jun-Tack Park; Hyung-Kee Yoon; Young-Soo Lee; Ki-Chang Chang |
A dehumidifier for a compressor, including: a plurality of dehumidifying members that absorb moisture; and a flow passage controlling valve module that enables a low-temperature vapor refrigerant to alternately flow into the plurality of dehumidifying members and enables the low-temperature refrigerant to flow into a compressor in a state where moisture contained in the low-temperature refrigerant is absorbed and is removed, enables a high-temperature vapor refrigerant ejected from the compressor to alternately flow into the dehumidifying members and regenerates the dehumidifying members. Thus, since a liquid-state absorbent contained in a refrigerant flowing into the compressor is removed by the dehumidifier, damage caused by liquid compression and corrosion of the compressor can be reduced. In addition, the structure of the dehumidifier is simple, and an additional external heating source is not required. |
129 |
Apparatus and method for measuring concentration of liquid-state refrigerant of nonazeotrope refrigerant mixture, and absorption type, 1-stage compressing-absorbing type and 2-stage compressing-absorbing type heat pump including the apparatus |
US13658105 |
2012-10-23 |
US09243820B2 |
2016-01-26 |
Seong-Ryong Park; Siyoung Jeong; Minsung Kim |
An apparatus and method for measuring concentration of a liquid-state refrigerant of a nonazeotrope refrigerant mixture. A container is disposed in such a way that a liquid-state refrigerant mixture of the nonazeotrope refrigerant mixture in a saturated state is temporarily stored with set quality. By measuring temperature and pressure of the liquid-state refrigerant mixture, concentration of the liquid-state refrigerant can be calculated from a database regarding a relationship between a saturation vapor pressure, temperature, quality, and concentration of the previously-stored nonazeotrope refrigerant mixture in the saturated state. Thus, a configuration for measuring the concentration of the liquid-state refrigerant-absorbent mixture includes a container, a temperature sensor and a pressure sensor and thus is very simple and the cost for the configuration can be reduced. In addition, the container can be easily mounted on existing equipment without disturbance of a flow. |
130 |
Hybrid absorption-compression chiller |
US13976140 |
2011-11-29 |
US09239177B2 |
2016-01-19 |
Balu Radhakrishnan; Babu Panneerselvam; Shanmugamuthukumar Sivakaminathan |
The present invention envisages a hybrid absorption-compression chiller comprising: a vapor-compression system providing refrigeration effect in a primary evaporator (102a) by extracting heat from a medium to be cooled in a condensed primary refrigerant, and a vapor-absorption system in operative communication with the vapor-compression system for receiving primary refrigerant vapors via a compressor (104a), these vapors are cooled by a condensed secondary refrigerant in a secondary evaporator (106a) to provide cold condensed primary refrigerant which is recycled to the vapor-compression system. The hybrid absorption-compression chiller of the present invention is energy-efficient and provides a higher COP in comparison with the conventional chillers. |
131 |
Vehicle with a cooling system for cooling and method for cooling in a vehicle |
US13677804 |
2012-11-15 |
US09052128B2 |
2015-06-09 |
Marco Grefe |
A cooling system of a vehicle with a fuel cell includes an absorbent circuit with an absorber tank, a regenerator tank, an absorbent pump and a first pressure reduction means and a coolant circuit with a condenser connected to a steam outlet of the regenerator tank, a second pressure reduction means and an evaporator arranged between a steam inlet of the absorber tank and the second pressure reduction means. The regenerator tank is designed to desorb the coolant in solution in the absorbent by absorbing a first quantity of heat and to introduce it in a vaporous state into the condenser. The evaporator is designed to evaporate the coolant while absorbing a second quantity of heat and to introduce it in the vaporous state into the absorber tank. At least one of the first and of the second quantity of heat could be provided by the fuel cell. |
132 |
Vapour absorption refrigeration |
US13876710 |
2011-09-29 |
US08935932B2 |
2015-01-20 |
Peter David Coles |
The invention relates to vapor absorption refrigeration. The invention provides methods for carrying out vapor absorption refrigeration, and a vapor absorption refrigeration installation. The invention provides also a method for operating an absorption stage of a vapor absorption refrigeration system and an absorption stage installation for a vapor absorption refrigeration installation. |
133 |
HYBRID SYSTEM COMBINING CHILLER AND ABSORPTION HEAT PUMP |
US13940250 |
2013-07-11 |
US20150013373A1 |
2015-01-15 |
Jen-Huang Tsai |
A hybrid system including an absorption heat pump and a compression chiller is provided. The absorption heat pump includes a generator, a first condenser, a first evaporator and an absorber connected in series. A first refrigerant is cooled by the first condenser and releases a first heat capacity, evaporated in the first evaporator and receives a second heat capacity, and mixed with a sorbent in the absorber and releases a third heat capacity. The compression chiller includes a compressor, a condensing module and a second evaporator connected in series. A second refrigerant is cooled by the condensing module and releases the second heat capacity, and evaporated in the second evaporator and receives a fourth heat capacity, wherein the condensing module is connected to the first evaporator, so that the second heat capacity released by the second refrigerant is transmitted to the first refrigerant in the first evaporator. |
134 |
SYSTEM AND METHOD FOR WASTE HEAT UTILIZATION IN CARBON DIOXIDE CAPTURE SYSTEMS IN POWER PLANTS |
US13752592 |
2013-01-29 |
US20140208782A1 |
2014-07-31 |
Staffan Joensson; Hardy Rauchfuss; Gisbert Kaefer; Turgay Pekedemir; Michal Bialkowski; Andreas Brautsch |
Disclosed herein is a system comprising an absorber; the absorber permitting contact between a flue gas stream that comprises carbon dioxide and a solvent to produce a carbon dioxide rich solvent; a regenerator disposed downstream of the absorber; the regenerator being operative to dissociate the carbon dioxide from the solvent; and a compression system disposed downstream of the regenerator comprising a plurality of compression stages; where each compression stage comprises a compressor that is operative to pressurize the carbon dioxide that is dissociated from the solvent; and where at least some of the compression stages comprise a knockout tank disposed upstream of the compressor and an intercooling heat exchanger disposed downstream of the compressor; where the knockout tank is operative to remove liquid present in the carbon dioxide and where the intercooling heat exchanger is operative to remove heat generated during the pressurizing of the carbon. |
135 |
METHOD FOR OPERATING AN ADSORPTION COMPRESSOR AND ADSORPTION COMPRESSOR FOR USE IN SAID METHOD |
US14000894 |
2012-02-22 |
US20140116073A1 |
2014-05-01 |
Johannes Faas Burger; Robert Jan Meijer |
The present invention is directed to a method of operating an adsorption compressor system, which system comprises a hot source and a cold source and at least a first and a second adsorption bed, wherein the first bed has an initial temperature that is lower than the initial temperature of said second bed, in which system heat is circulated using a heat transfer fluid (HTF), the method comprising the following phases: phase A) comprising the steps of: heating the first adsorption bed by feeding HTF to it, coming from said second bed, optionally via said hot source, while maintaining a thermal wave in said first bed; and cooling the second adsorption bed by feeding HTF to it, coming from said first bed, optionally via said cold source, while maintaining a thermal wave in said second bed; wherein phase A) is maintained until the exit temperature of said first bed and said second bed are essentially the same and phase B) comprising the steps of: feeding the HTF effluent of said first bed to said hot source and from said hot source back into said first bed; and feeding the HTF effluent of said second bed to said cold source and from said cold source back into said second bed; wherein phase B) is maintained until the temperature in said first bed is essentially homogeneous and the temperature in said second bed is also essentially homogeneous and lower than the temperature of said first bed, wherein the flow rates of said HTF through said first and second bed may be higher than in phase A). |
136 |
VAPOUR ABSORPTION REFRIGERATION |
US13876710 |
2011-09-29 |
US20130269375A1 |
2013-10-17 |
Peter David Coles |
Vapour absorption refrigeration is carried out by condensing, in a condensing stage (98), a refrigerant in vapour form to obtain condensed refrigerant, being passed into an expansion/evaporation stage (16) in which it is subjected to heat transfer with a higher temperature medium (29) such that at least some of the refrigerant evaporates. Vapourised refrigerant passes from the evaporation stage into an absorption stage (30) in which some of it is absorbed, at a first pressure, into an absorbent, thereby to obtain partially refrigerant-enriched absorbent. This absorbent is contacted, in a compression absorption stage (58) at a second pressure greater than the first pressure, with vapourised refrigerant, rendering refrigerant-enriched absorbent which is passed from the compression absorption stage into a refrigerant regeneration stage (62), in which refrigerant in vapour form is recovered, rendering refrigerant-depleted absorbent. The recovered refrigerant is recycled to the condensing stage and the refrigerant-depleted absorbent to the absorption stage where it constitutes the absorbent. |
137 |
DEHUMIDIFIER FOR A COMPRESSOR, 1-STAGE COMPRESSING-ABSORBING TYPE HEAT PUMP SYSTEM AND 2-STAGE COMPRESSING-ABSORBING TYPE HEAT PUMP SYSTEM |
US13658150 |
2012-10-23 |
US20130167581A1 |
2013-07-04 |
Seong-Ryong PARK; Ji-Young Kim; Minsung Kim; Young-Jin Baik; Ho-Sang Ra; Jun-Tack Park; Hyung-Kee Yoon; Young-Soo Lee; Ki-Chang Chang |
A dehumidifier for a compressor, including: a plurality of dehumidifying members that absorb moisture; and a flow passage controlling valve module that enables a low-temperature vapor refrigerant to alternately flow into the plurality of dehumidifying members and enables the low-temperature refrigerant to flow into a compressor in a state where moisture contained in the low-temperature refrigerant is absorbed and is removed, enables a high-temperature vapor refrigerant ejected from the compressor to alternately flow into the dehumidifying members and regenerates the dehumidifying members. Thus, since a liquid-state absorbent contained in a refrigerant flowing into the compressor is removed by the dehumidifier, damage caused by liquid compression and corrosion of the compressor can be reduced. In addition, the structure of the dehumidifier is simple, and an additional external heating source is not required. |
138 |
APPARATUS AND METHOD FOR MEASURING CONCENTRATION OF LIQUID-STATE REFRIGERANT OF NONAZEOTROPE REFRIGERANT MIXTURE, AND ABSORPTION TYPE, 1-STAGE COMPRESSING-ABSORBING TYPE AND 2-STAGE COMPRESSING-ABSORBING TYPE HEAT PUMP INCLUDING THE APPARATUS |
US13658105 |
2012-10-23 |
US20130167568A1 |
2013-07-04 |
Seong-Ryong PARK; Siyoung Jeong; Minsung Kim |
An apparatus and method for measuring concentration of a liquid-state refrigerant of a nonazeotrope refrigerant mixture. A container is disposed in such a way that a liquid-state refrigerant mixture of the nonazeotrope refrigerant mixture in a saturated state is temporarily stored with set quality. By measuring temperature and pressure of the liquid-state refrigerant mixture, concentration of the liquid-state refrigerant can be calculated from a database regarding a relationship between a saturation vapor pressure, temperature, quality, and concentration of the previously-stored nonazeotrope refrigerant mixture in the saturated state. Thus, a configuration for measuring the concentration of the liquid-state refrigerant-absorbent mixture includes a container, a temperature sensor and a pressure sensor and thus is very simple and the cost for the configuration can be reduced. In addition, the container can be easily mounted on existing equipment without disturbance of a flow. |
139 |
VEHICLE WITH A COOLING SYSTEM FOR COOLING AND METHOD FOR COOLING IN A VEHICLE |
US13677804 |
2012-11-15 |
US20130125566A1 |
2013-05-23 |
Marco Grefe |
A cooling system of a vehicle with a fuel cell includes an absorbent circuit with an absorber tank, a regenerator tank, an absorbent pump and a first pressure reduction means and a coolant circuit with a condenser connected to a steam outlet of the regenerator tank, a second pressure reduction means and an evaporator arranged between a steam inlet of the absorber tank and the second pressure reduction means. The regenerator tank is designed to desorb the coolant in solution in the absorbent by absorbing a first quantity of heat and to introduce it in a vaporous state into the condenser. The evaporator is designed to evaporate the coolant while absorbing a second quantity of heat and to introduce it in the vaporous state into the absorber tank. At least one of the first and of the second quantity of heat could be provided by the fuel cell. |
140 |
PROCESS AND APPARATUS FOR COOLING |
US12998232 |
2009-10-02 |
US20110173998A1 |
2011-07-21 |
Tony Coleman; Ciaran Wallace |
The invention relates to the creation of hybrid refrigeration systems. In one embodiment a low pressure booster circuit is linked to an absorption plant to provide cooling at lower temperatures that can be achieved by the absorption plant alone. The combined systems are efficient compared to vapour compression systems, especially when “waste” heat from other processes is used to drive the absorption part of the circuit. The absorption plant can be provided with heat either by direct firing of a fuel, by waste heat from a combined heat and power (CHP) prime mover (such as a gas engine or gas turbine for example), or by any suitable source of waste heat from another process. |