Intermittent Operating Of Generation And Sorption Cycle Patents (Class 62/106)
  • Patent number: 5335510
    Abstract: An improved apparatus for staging solid-vapor complex compounds comprises heat exchange means for transferring heat from super-heated refrigerant vapor from a desorbing reactor to cooled refrigerant vapor directed to an adsorbing reactor. In another embodiment a liquid subcooler is used to cool liquid refrigerant passing from a condenser to an evaporator with cold refrigerant gas directed to an adsorbing reactor from the evaporator.
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: August 9, 1994
    Assignee: Rocky Research
    Inventors: Uwe Rockenfeller, Lance D. Kirol
  • Patent number: 5295358
    Abstract: An improved apparatus for staging solid-vapor complex compounds comprises heat exchange means for transferring heat from super-heated refrigerant vapor from a desorbing reactor to cooled refrigerant vapor directed to an adsorbing reactor. In another embodiment a liquid subcooler is used to cool liquid refrigerant passing from a condenser to an evaporator with cold refrigerant gas directed to an adsorbing reactor from the evaporator.
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: March 22, 1994
    Assignee: Rocky Research
    Inventors: Uwe Rockenfeller, Lance D. Kirol
  • Patent number: 5291753
    Abstract: An improved apparatus for staging solid-vapor complex compounds comprises heat exchange means for transferring heat from super-heated refrigerant vapor from a desorbing reactor to cooled refrigerant vapor directed to an adsorbing reactor. In another embodiment a liquid subcooler is used to cool liquid refrigerant passing from a condenser to an evaporator with cold refrigerant gas directed to an adsorbing reactor from the evaporator.
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: March 8, 1994
    Assignee: Rocky Research
    Inventors: Uwe Rockenfeller, Lance D. Kirol
  • Patent number: 5291750
    Abstract: A micro-climate heating/cooling method and apparatus for vests and the like operates with reaction of working fluid, such as water, with an adsorbent material. A lightweight pump is the only moving component needed to provide the desired heating and cooling requirements.
    Type: Grant
    Filed: February 6, 1992
    Date of Patent: March 8, 1994
    Assignee: Mainstream Engineering Corporation
    Inventors: Clyde F. Parrish, Robert P. Scaringe
  • Patent number: 5263330
    Abstract: An apparatus comprises a plurality of two or more reaction chambers, each having a different compound therein comprising a solid reactant adsorbent and a gaseous reactant adsorbed thereon, each of said compounds having a different gaseous refrigerant vapor pressure, substantially independent of the concentration of the gaseous reactant, and having an ascending order of gaseous reactant vapor pressure wherein the adsorption temperature of a lower vapor pressure compound at adsorption temperature of a lower vapor pressure compound at adsorption pressure is at least 8.degree..degree.C.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: November 23, 1993
    Assignee: Rocky Research
    Inventors: Uwe Rockenfeller, Lance D. Kirol
  • Patent number: 5241831
    Abstract: An improved apparatus for staging solid-vapor complex compounds comprises heat exchange means for transferring heat from super-heated refrigerant vapor from a desorbing reactor to cooled refrigerant vapor directed to an adsorbing reactor. In another embodiment a liquid subcooler is used to cool liquid refrigerant passing from a condenser to an evaporator with cold refrigerant gas directed to an adsorbing reactor from the evaporator.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: September 7, 1993
    Assignee: Rocky Research
    Inventors: Uwe Rockenfeller, Lance D. Kirol
  • Patent number: 5237827
    Abstract: The use of molecular sieve zeolite for the effective utilization of low-grade heat sources such as solar energy. A system includes molecular sieve zeolite and a low pressure polar gaseous fluid adapted to be adsorbed by the zeolite which is in a closed container and circuit which includes a condenser and a gas expansion cooler member. When the container is heated, a gas is given off from the zeolite, cooled in a condenser, and thereafter expanded for cooling purposes. In one embodiment, the cooled gas is received in a further container having the zeolite therein and subsequently, upon cooling of the first container, the gaseous fluid may be returned thereto via again a condenser and gas expansion cooler member to provide further cooling. In another embodiment, zeolite is formed by sintering same to form a pressure resistant divider across the container.
    Type: Grant
    Filed: October 2, 1990
    Date of Patent: August 24, 1993
    Inventor: Dimiter I. Tchernev
  • Patent number: 5161389
    Abstract: An apparatus capable of rapidly cooling or freezing a composition comprising a walled housing member having a cooling chamber and a door for accessing the cooling chamber from the exterior of the housing, an evaporator and a blower for circulating cold air from the evaporator to the cooling chamber, first and second reactors each containing a complex compound consisting of a metal salt and ammonia adsorbed thereon, heaters in the reactors for heating the complex compound, and valves and conduits for directing ammonia from the evaporator to the reactors, from the reactors to the condenser, and from the condenser to the evaporator, and control means for sequentially operating the heaters for alternately heating the complex compounds in the reactors, operating the air handling means and one or more of the valves, and switching means for turning the apparatus on and off.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: November 10, 1992
    Assignee: Rocky Research
    Inventors: Uwe Rockenfeller, Lance D. Kirol
  • Patent number: 5079928
    Abstract: A method of transferring and recovering energy comprises placing in different reactors two or more different solid adsorbents having a gaseous reactant adsorbed thereon and each having a different gaseous reactant vapor pressure, in a first reaction cycle, pressurizing a first portion of the reactors at a first pressure to desorb the gaseous reactant in an endothermic reaction, and pressurizing a second portion of the reactors at a second pressure to adsorb the gaseous reactant in an exothermic reaction, and in a second reaction cycle, pressurizing the first portion of the reactors at the second pressure to adsorb the gaseous reactant in an exothermic reaction, and pressurizing the second portion of the reactors at the first pressure to desorb the gaseous reactant in an endothermic reaction, and directing at least a portion of the heat released during the exothermic reactions or at least a portion of heat adsorbed during the endothermic reactions to heat exchange means for energy recovery.
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: January 14, 1992
    Assignee: Rocky Research
    Inventors: Uwe Rockenfeller, Lance D. Kirol
  • Patent number: 5027607
    Abstract: A method of transferring and recovering energy comprises placing in different reactors two or more different solid adsorbents having a gaseous reactant adsorbed thereon and each having a different gaseous reactant vapor pressure, in a first reaction cycle, pressurizing a first portion of the reactors at a first pressure to desorb the gaseous reactant in an endothermic reaction, and pressurizing a second portion of the reactors at a second pressure to adsorb the gaseous reactant in an exothermic reaction, and in a second reaction cycle, pressurizing the first portion of the reactors at the second pressure to adsorb the gaseous reactant in an exothermic reaction, and pressurizing the second portion of the reactors at the first pressure to desorb the gaseous reactant in an endothermic reaction, and directing at least a portion of the heat released during the exothermic reactions or at least a portion of heat absorbed during the endothermic reactions to heat exchange means for energy recovery.
    Type: Grant
    Filed: July 7, 1989
    Date of Patent: July 2, 1991
    Assignee: Rocky Research
    Inventors: Uwe Rockenfeller, Lance D. Kirol
  • Patent number: 5025635
    Abstract: A method of transferring and recovering energy comprises selecting a plurality of two or more different compounds comprising a solid reactant adsorbent and a gaseous reactant adsorbed thereon, each of said compounds having a different gaseous reactant vapor pressure, substantially independent of the concentration of the gaseous reactant, locating a first set of the different compounds in a first reactor and a second set of the different compounds in a second reactor, pressurizing the first reactor at a first pressure and the second reactor at a second pressure, supplying a heat transfer fluid at a first temperature along the first reactor in thermal communication with the first set of compounds, whereby said compounds desorb said gaseous reactant in endothermic reactions, supplying a heat transfer fluid at a second temperature, typically lower than the first temperature, along second reactor in thermal communication with the second set of compounds, whereby the compounds adsorb the gaseous reactant in exother
    Type: Grant
    Filed: November 14, 1989
    Date of Patent: June 25, 1991
    Assignee: Rocky Research
    Inventors: Uwe Rockenfeller, Lance D. Kirol
  • Patent number: 5024064
    Abstract: A method of operating an adsorption refrigerator comprising two adsorption columns each housing therein a solid adsorbent and heat transfer tubes and sealed with a refrigerant, a condenser, an evaporator, paths for refrigerant connnecting the adsorption columns to the condenser and evaporator so that the refrigerant may be circulated through the columns, and a pipeline equipped with a valve connecting directly the adsorption columns, which method comprises changing over the adsorption columns periodically alternately between adsorption and desorption phases in manner that the one and the other adsorption columns are at opposite phases and that a heat transfer medium on a heat source side and a coolant are routed through alternately in response to desorption and adsorption phases, respectively.
    Type: Grant
    Filed: February 14, 1990
    Date of Patent: June 18, 1991
    Assignee: Nishiyodo Air Conditioner Co., Ltd.
    Inventors: Yasuo Yonezawa, Toshiya Ohnishi, Shin-ichi Okumura, Akiyoshi Sakai, Hiroki Nakano, Masao Matsushita, Atsushi Morikawa, Motoshi Yoshihara
  • Patent number: 4956977
    Abstract: Periodic adsorption apparatus with the substance pair zeolite/water being used as electro-heat storage devices. Due to the heat pumping effect there can be a 30% savings of power.
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: September 18, 1990
    Inventors: Peter Maier-Laxhuber, Fritz Kaubek
  • Patent number: 4924676
    Abstract: An adsorption cooler operating in accordance with the periodical adsorption principle and consisting of at least one adsorption container filled with zeolite. At least one condenser with a collecting container for the water which desorbs from the zeolite and an insulated cooling container which may be closed by a shut-off member are serially connected with the adsorption container. In the cooling container, the adsorption cooler generates ice in stages which acts as a cold buffer. The system is usable for example in solar cooling systems, vehicle air conditioning units and air conditioning insulation as well as beverage coolers.
    Type: Grant
    Filed: June 12, 1986
    Date of Patent: May 15, 1990
    Inventors: Peter Maier-Laxhuber, Fritz J. Kaubek
  • Patent number: 4881376
    Abstract: An adsorption refrigeration system comprising adsorption columns housing a solid adsorbent and heat transfer tubes and sealed with a refrigerant, an evaporator, a condenser, and pipe lines connecting them together so that the refrigerant may be circulated, the pipe lines being equipped with valves, preferably, butterfly valves, capable of opening or closing by means of internal pressure difference between the evaporator side and condenser side and driving force of eccentric valve shafts. The system is operated by alternatively changing over adsorption and desorption stages between the one adsorption column(s) and the other column(s) so that both columns may be at mutually reverse stages; shortly before change-over, transferring whole amount of heat remained in the one column(s) immediately before shifting from desorption to adsorption stage to the other column(s) immediately before shifting from adsorption to desorption stage where the preheat the adsorbent and then reversing the stages.
    Type: Grant
    Filed: February 19, 1988
    Date of Patent: November 21, 1989
    Assignee: Nishiyodo Air Conditioner Co., Ltd.
    Inventors: Yasuo Yonezawa, Masao Matsushita, Kenzo Oku, Hiroki Nakano, Shin-ichi Okumura, Motoshi Yoshihara, Akiyoshi Sakai, Atsushi Morikawa
  • Patent number: 4823864
    Abstract: A system for storing chemical energy comprises first and second vessels, the first containing a liquid solution of an alkali or alkaline earth metal hydroxide, halide, or thiocyanate, or ammonium halide or thiocynate at an initial concentration of between about 30% to abotu 80%, by weight, the second vessel containing liquid, a space about the liquid in each vessel and a conduit communicating between the spaces having a valve for selectively allowing liquid vapor to pass between the spaces, means for heating the solution to a temperature above about 80.degree. F., means for cooling the liquid to a temperature below about 55.degree. F., and heat exchange means for transferring heat from the heated solution and for transferring heat to the cooled liquid. Water is the preferred liquid although ammonia, lower alcohols, and polyols such as glycerol, glycols, polyglycols, glycol ethers, lower aliphatic amines and alkanol amines, and mixtures thereof, may be used.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: April 25, 1989
    Inventor: Uwe Rockenfeller
  • Patent number: 4694659
    Abstract: A heat pump method and system with a pair of solid adsorbent beds connected to a heat pump loop and a reversible heat transfer loop. The heat transfer loop has a heater connected between one end of the beds and a cooling heat exchange connects the other end of the beds so that a heat transfer fluid flowing around the heat transfer loop heats one bed and cools the other.
    Type: Grant
    Filed: September 8, 1986
    Date of Patent: September 22, 1987
    Inventor: Samuel V. Shelton
  • Patent number: 4656839
    Abstract: A centrifugal absorption heat pump in which the heat released on condensation of the vapor of a first working fluid is used to generate a vapor from a solution of a second working fluid, and/or heat released on absorption of a third working fluid in an absorbent is used to evaporate a fourth working fluid.
    Type: Grant
    Filed: January 7, 1985
    Date of Patent: April 14, 1987
    Assignee: Imperial Chemical Industries plc
    Inventors: William T. Cross, Colin Ramshaw
  • Patent number: 4637218
    Abstract: A heat pump using zeolite as an adsorbent wherein thermal energy from adsorbing zeolite in a one hermetically sealed space is used to heat desorbing zeolite located in another hermetically sealed space, such heat being conveyed by heat exchanger conduits containing a fluid which, before heating the desorbing zeolite, has its temperature increased to about 400.degree. F. by a gas flame, the adsorption and desorption phases being changed between the zeolites in each cycle by reversing the fluid flow in the conduits. Cooling and heating for a building or other purposes are provided through the condenser and evaporator respectively for the working gas (water) which is desorbed and adsorbed into the zeolites. A propagating temperature front is established through the fluid-to-zeolite heat exchanger conduits to provide utilization of as much as ninety percent of thermal energy available during the desorption/adsorption phases.
    Type: Grant
    Filed: November 18, 1985
    Date of Patent: January 20, 1987
    Inventor: Dimiter I. Tchernev
  • Patent number: 4610148
    Abstract: A heat pump system with a pair of solid adsorbent beds connected to a heat pump loop and a reversible heat transfer loop. The heat pump loop has a heater connected between one end of the beds and a cooling heat exchanger connects the other end of the beds so that a heat transfer fluid flowing around the heat transfer loop heats one bed and cools the other with the flow being reversed to cycle the beds and drive the heat pump loop.
    Type: Grant
    Filed: May 3, 1985
    Date of Patent: September 9, 1986
    Inventor: Samuel V. Shelton
  • Patent number: 4584842
    Abstract: Molecular seive zeolite to obtain useful energy from low-grade heat sources such as solar energy. Molecular sieve zeolite and a low pressure polar gaseous fluid adapted to be adsorbed by zeolite in a closed container are in a circuit which includes gas condensing and expansion apparatus. In one embodiment, cooled gas is received in another zeolite filled container, upon cooling of the first container, is returned via condensing and expansion apparatus providing more cooling. In another embodiment, sintered zeolite forms a divider across a container; heating one side creates a temperature gradient across the divider which functions as a pump for adsorbed gas and a pressure as well as temperature differential develops across the divider whereupon the heated relatively pressurized gas, after giving up energy in a circuit which may include condensing and expansion apparatus, is returned to the container and again passed through the divider.
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: April 29, 1986
    Inventor: Dimiter I. Tchernev
  • Patent number: 4368623
    Abstract: A method and apparatus for the use of heat taken up at low temperature is disclosed wherein a flow of transfer medium is passed through a low temperature heat source to absorb heat. The flow then passes through multiple, sequential stages of a heat pump which successively increase in temperature whereby the flow picks up heat. The flow then releases heat to the heat receiver and subsequently passes through multiple sequential degassing stages of the heat pump. The flow releases evaporation heat and is cooled to a suitable temperature for use in the low temperature heat source. The heat pump preferably includes a two substance mixture provided within a two portion, hermetically sealed chamber.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: January 18, 1983
    Inventors: Karl F. Knoche, Heinrich Trumper, Dieter Stehmeier
  • Patent number: 4332139
    Abstract: The invention provides a novel method for the storage and recovery of thel energy by utilizing a medium substance for the storage of heat. The medium substance is a liquid complex of sodium iodide and ammonia, which absorbs heat as latent heat when brought under a reduced partial pressure of ammonia to effect liberation of ammonia and releases the thermal energy as sensible heat when brought under an increased partial pressure of ammonia to absorb ammonia. Different from conventional solid medium substances for storage of heat, the liquid medium proposed is very convenient in handling so that a chemical heat pump with simple structure can be contrived by use of the inventive method.
    Type: Grant
    Filed: August 9, 1979
    Date of Patent: June 1, 1982
    Assignee: The Director-General of the Agency of Industrial Science and Technology
    Inventors: Ichiro Fujiwara, Totaro Goto
  • Patent number: 4272268
    Abstract: A chemical heat pump system is disclosed for use in heating and cooling structures such as residences or commercial buildings. The system is particularly adapted to utilizing solar energy, but also increases the efficiency of other forms of thermal energy when solar energy is not available. When solar energy is not available for relatively short periods of time, the heat storage capacity of the chemical heat pump is utilized to heat the structure, as during nighttime hours. The design also permits home heating from solar energy when the sun is shining. The entire system may be conveniently rooftop located. In order to facilitate installation on existing structures, the absorber and vaporizer portions of the system may each be designed as flat, thin wall, thin pan vessels which materially increase the surface area available for heat transfer.
    Type: Grant
    Filed: October 17, 1977
    Date of Patent: June 9, 1981
    Inventor: Leonard Greiner
  • Patent number: 4224803
    Abstract: A chemical heat pump system is disclosed for use in heating and cooling structures such as residences or commercial buildings. The system is particularly adapted to utilizing solar energy, but also increases the efficiency of other forms of thermal energy when solar energy is not available. When solar energy is not available for relatively short periods of time, the heat storage capacity of the chemical heat pump is utilized to heat the structure as during nighttime hours. The design also permits home heating from solar energy when the sun is shining. The entire system may be conveniently rooftop located. In order to facilitate installation on existing structures, the absorber and vaporizer portions of the system may each be designed as flat, thin wall, thin pan vessels which materially increase the surface area available for heat transfer.
    Type: Grant
    Filed: November 7, 1978
    Date of Patent: September 30, 1980
    Inventor: Leonard Greiner
  • Patent number: 4205531
    Abstract: A space is cooled by gasifying or vaporizing a first, preferably liquid substance in a first container located in said space. The gas or vapor thus formed is conducted into a second container located outside the space and containing a second substance generating a lower gas pressure than said first substance at the same temperature, preferably by being chemically bound thereby. Said gas or vapor is absorbed by the second substance, which shall possess the quality of forming a porous, substantially rigid body in its container after heating or regeneration in vacuum. The second substance is comprised of sodium sulphide, at least as its major ingredient.
    Type: Grant
    Filed: May 22, 1978
    Date of Patent: June 3, 1980
    Inventors: Ernst-Ake Brunberg, Ray Olsson
  • Patent number: RE34542
    Abstract: A system for storing chemical energy comprises first and second vessels, the first containing a liquid solution of an alkali or alkaline earth metal hydroxide, halide, or thiocyanate, or ammonium halide or thiocynate at an initial concentration of between about 30% to abotu 80%, by weight, the second vessel containing liquid, a space about the liquid in each vessel and a conduit communicating between the spaces having a valve for selectively allowing liquid vapor to pass between the spaces, means for heating the solution to a temperature above about 80.degree. F., means for cooling the liquid to a temperature below about 55.degree. F., and heat exchange means for transferring heat from the heated solution and for transferring heat to the cooled liquid. Water is the preferred liquid although ammonia, lower alcohols, and polyols such as glycerol, glycols, polyglycols, glycol ethers, lower aliphatic amines and alkanol amines, and mixtures thereof, may be used.
    Type: Grant
    Filed: April 25, 1991
    Date of Patent: February 15, 1994
    Assignee: Rocky Research
    Inventor: Uwe Rockenfeller