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7412837 Method for use in controlling an absorption refrigerating system, and an absorption refrigerator  
The invention relates to a method for controlling a running time of an absorption refrigerating system of an absorption refrigerator, which absorption refrigerator comprises two differently...
7347057 Control of dual-heated absorption heat-transfer machines  
An absorption, heat-transfer system with an operationally interconnected generator, absorber, condenser, and evaporator; at least two separate heat sources for heating the generator; and a...
7273071 Diverter valve for capacity control of a refrigerant absorption cycle driving heat source  
A control for controlling the amount of heated fluid entering the inlet of the driving heat source for a refrigerant absorption cycle is controlled to vary the relative amount of heated fluid...
7143592 Absorption chiller-heater  
There is constructed a constitution including an exhaust heat fired regenerator constituting a heat source by exhaust heat from external machine generating the exhaust heat, a heat fluid flow path...
7065976 Control logic for maintaining proper solution concentration in an absorption chiller in co-generation applications  
This application discloses a control logic for maintaining a proper solution concentration within an absorption chiller. Further, safeguards are added to a system control to ensure robust operation...
7050888 Control system and method of controlling ammonium absorption refrigerators  
The present invention provides control systems and methods for a cooling unit. The system includes a temperature sensor that senses the temperature of a cooling fin and a circuit. The circuit may...
6983617 Efficient control for smoothly and rapidly starting up an absorption solution system  
An absorption chiller system has an efficient start-up control that monitors system condition, and in particular the absorption solution temperature. The system limits the amount of heat delivered...
6792765 Chilling system and method  
A chiller system comprises a chiller, a burner, a first variable frequency driver and pump, a second frequency drive and pump, and a feedback system. The chiller has a chilled water input and a...
6786059 Refrigeration system  
Water is used as a refrigerant, and a humidification cooler ( 41 ) which evaporates the water to generate cold heat and a dehumidifier ( 42 ) are provided. A compressor ( 50 ) which compresses...
6748752 Apparatus and method for weak liquor flow control in aqua-ammonia absorption cycles  
An aqua-ammonia absorption cooling and/or heating system actively controls the flow of weak liquor from the generator to the absorber, using one or more valves operated in response to weak liquor...
6742347 Feedforward control for absorption chiller  
A feedforward control method for an absorption chiller includes determining the disturbance transfer function, determining the capacity valve transfer function, measuring the actual disturbance,...
6735963 Aqua-ammonia absorption system with variable speed burner  
An aqua-ammonia absorption cooling and/or heating system having a variable speed burner which uses active flow control of weak liquor and/or active control of refrigerant flow to the evaporator.
6701727 Apparatus and method for managing heat source unit for air conditioner  
A management apparatus and a management method which can forecast inspection time before the lowering of performance or the occurrence of abnormality in a heat source unit for an air conditioner...
6701726 Method and apparatus for capacity valve calibration for snapp absorption chiller  
Data points are determined for an absorption chiller system which relate a position of the capacity valve to the heat input into the system. A continuous curve is determined which estimates the...
6666037 Absorption refrigerator control method  
An object of the invention is to enable heat sources to be surely utilized in accordance with order of priorities and to prevent a overshooting of a temperature of cold water supplied from an...
6662591 Electro-desorption compressor  
A electro-desorption compression system according to the present invention comprises an enclosure which includes first and second spaced-apart electrical conductors, a sorbent which is positioned...
6658870 Absorption chiller control logic  
In an absorption chiller system, a control input for the chiller is a heat source controlled by a capacity valve, which is in turn controlled by a PI controller. The controller is controlled by a...
6637221 Dual setpoint control for an absorption chiller  
A method of controlling the capacity of an absorption chiller by regulating the heat input to a generator in response to a selected one of two system variables. The first variable involves the...
6637220 Dilution cycle for absorption chiller  
A routine of controlling the dilution cycle of an absorption chiller to determine when to initiate a dilution cycle, continue the cycle and terminate the cycle. The concentration of solution...
6584788 Apparatus and method for improved performance of aqua-ammonia absorption cycles  
An aqua-ammonia absorption heating and/or cooling apparatus uses a thermostatic expansion valve (TXV) and a temperature-sensing bulb for controlling refrigerant flow to the evaporator having a bulb...
6477850 Air conditioner  
The air conditioner comprises heat transfer medium temperature adjusting device 1 for adjusting the temperature of a heat transfer medium, an absorption chiller 5 having as a heat source the...
6405558 Refrigerant storage apparatus for absorption heating and cooling system  
In a two-stage absorption heating and cooling system with refrigerant storage apparatus for converting from a cooling to a heating mode of operation, provision is made to position the refrigerant...
6332328 Absorption heat pump and process for operation of an absorption heat pump  
A process for operation of an absorption heat pump in which in a boiling apparatus a solution which contains a refrigerant is heated by a burner in order to expel the refrigerant as refrigerant...
6047559 Absorption cold/hot water generating machine  
An absorption cold/hot water generating machine comprising a refrigerating cycle formed by pipe-connecting an evaporator, an absorber, a solution heat exchanger, a low-temperature generator, a...
6038883 Electromagnetic wave-activated sorption refrigeration system  
A refrigeration system capable of providing cooling during at least a portion of a repeatable refrigeration cycle, the refrigeration system comprising at least one sorber having a housing forming...
5916251 Steam flow regulation in an absorption chiller  
A method for regulating energy consumption by a steam-fired absorption chiller having a steam control valve for controlling steam flow to the generator in which the steam pressure upstream of the...
5910158 Fuzzy control apparatus and method of branched refrigerant flow and fuel combustion in multi absorption type heat pump  
A fuzzy control apparatus and method for a branched refrigerant flow and fuel combustion in a multi absorption type-heat pump is disclosed. The heat pump is controlled by automatically determining...
5878587 Absorption cool-warm water machine and method for controlling the same  
An absorption cool-water machine including a high quality fuel system and an exhaust heat utility system and apparatus and method for controlling the same is described in which the control has...
5813241 Crytallization detection and recovery for two-stage absorption refrigeration machine  
A crystallization detection and recovery method for a two-stage absorption refrigeration machine is provided. Crystallization in the low temperature heat exchanger is detected through temperature...
5782099 Method for controlling an absorption system  
A method for controlling an absorption system, comprising the step of performing slow open control for opening a control valve of a heat-source fluid feeding pipe connected to a regenerator at a...
5724823 Absorption over-concentration control  
An over-concentration control system for use with an absorption machine of the type having either a single, double and triple effect cooling and heating cycle, which uses lithium bromide in...
5722246 Absorption refrigerating apparatus control method  
To eliminate great increases in regeneration temperature and pressure and prevent the stoppage of an absorption refrigerating apparatus for safety upon a rise in the temperature of cooling water as...
5697225 Absorption type refrigerating apparatus  
In an absorption type refrigerating apparatus which comprises a temperature detector 30 for detecting the outlet temperature of cold water supplied from an evaporator 4 and a controller 31 for...
5682755 Control method and control apparatus for absorption type refrigerating apparatus  
A method of controlling an absorption type refrigerating apparatus comprising detecting the temperature of the regenerator, limiting the amount of heating in the regenerator for a first...
5673569 Double effect absorption cold or hot water generating machine  
A double effect absorption cold or hot water generating machine comprises an absorber A, a low temperature generator GL, a condenser C, a high temperature heat exchanger XH and a low temperature...
5661982 Electronic refrigerant compressor for a cooling system  
An electronic refrigerant compressing apparatus comprises two or more compressing portions coupled in parallel to one another, which repeats the heating and cooling of the refrigerant circulating...
5619859 Absorption refrigeration unit  
An absorption refrigeration unit adapted to attain energy-saving by suppressing a surplus refrigerating capacity at the time of a normal operation during which the cooling water temperature is low,...
5586447 Concentration control in an absorption chiller  
A process for controlling an absorbent-refrigerant solution concentration in an absorption cooling system to prevent crystallization of the solution in which the crystallization temperature of the...
5557939 Control system for absorption chillers  
A control system for absorption chillers which comprises a device for measuring operating state data concerning components of the main assembly of the chiller and including the liquid level of a...
5477696 Control device for absorption chiller or absorption chiller/heater  
A temperature t hg of a solution 23a heated and concentrated in a generator 5, an outlet temperature t r of chilled water 21a flowed from an evaporator 1, and an outlet temperature t r of a flow...
5423189 Control system for absorption heat transfer plants  
A control system for an absorption heat transfer plant controls the quantity of heat input into the plant's concentrator in response to the plant's evaporator liquid refrigerant temperature. The...
5333471 Adsorption cooling system  
A dual-adsorber cooling system for an automobile has a pair of adsorbers, a cooling vessel, a pair of absorbate outgoing passages extending from the cooling vessel to each of the adsorbers...
5289868 Absorption chiller heater and unit-type air conditioning system  
An unit-type air conditioning system is provided to enable low-load operation of an absorption chiller heater, to thereby improve the load responsiveness, and to use such a chiller heater as an...
5275010 Control method and apparatus of absorption chiller heater  
An individual air conditioning system with an absorption chiller heater having a controllable capacity, with thermal input to a burner of a high temperature regenerator being controlled by on-off...
5259205 Element for absorption chillier/absorption chiller-heater, and absorption chiller/absorption chiller-heater comprising the elements  
In a box-shaped main body of a nearly rectangular parallelepiped shaped shell, an absorber, an evaporator, a low temperature regenerator, and a condenser are disposed sequentially in the vertical...
5216896 Temperature control system for absorption refrigerating apparatus  
There is disclosed a temperature control system for an absorption refrigerating apparatus comprising an evaporator, an absorber, a condenser, a regenerator, a solution heat exchanger, a solution...
5156013 Control device for absorption refrigerator  
A control device for an absorption refrigerator which forms a refrigeration cycle by connecting an evaporator, an absorption unit, a generator, a condenser and the like to control a heating amount...
5138846 Control system for absorption refrigerator  
A control system for an absorption refrigerator comprising an evaporator, absorber, generator and condenser for providing a refrigeration cycle. At least one fuzzy rule includes two antecedent...
4914919 Arrangement for preventing freezing of the working medium in an absorption refrigerating apparatus  
The invention refers to an arrangement at a refrigerator cabinet (10) having an absorption refrigerating apparatus (16,18) operated by a heating cartridge (40) from at least one electric current...
4894998 Absorption system hot and cold water supply apparatus  
In an absorption system hot and cold water supply apparatus for simultaneously supplying hot water and cold water, there is provided a refrigerant blow device for blowing a refrigerant into a...
Matches 1 - 50 out of 165 1 2 3 4 >