Abstract: 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 predetermined speed and controlling the heat input at the time of start; wherein said control valve is quickly opened up to a predetermined opening degree at the time of start and thereafter, said control valve is opened at said predetermined speed is provided. There is no loss in the starting time by improving an operation delay of a heat-source fluid control valve at the start of operations and it is prevented that the heat-source fluid is excessively supplied to the absorption system itself which has still a low temperature to affect an equipment-side boiler even after the valve fully opens.

Abstract: An absorption type refrigerating apparatus using high temperature fluid as heat source of the regenerator is provided to prevent to avoid any possible crystallization of the solution in the high temperature regenerator and that of the solution in the heat exchanger when it starts to operate as well as the problem of abnormally high temperature in the that forces the refrigerating apparatus to stop in emergency. Said absorption type refrigerating apparatus comprises alarm means for notifying an abnormal condition by producing alarm sound or light, temperature detection means for detecting the temperature of the regenerator when the refrigerating apparatus is out of operation and a control unit for operating said alarm means according to the temperature detected by said temperature detection means.

Abstract: It is an objective of the present invention to improve the response performance of absorption refrigeration machine to changes in air-conditioning load by reducing irregularity in solution concentration. A spreader 34 is provided with openings 34a having a constant diameter, and these openings are positioned or aligned in such a manner that the concentration of the openings 34a is rare on one side of the spreader but dense on the other side. The side having the rare concentration of the openings 34a is placed to the lateral wall 1a of a vessel 1 in which a solution outlet 16 is provided. The side having the dense concentration is placed to the other lateral wall 1b of the vessel 1. The spreader 34 is placed at the position where it is slightly away from the solution outlet 16 toward a front wall 1c in a vapor portion of an evaporation-separative region 19, with the bottom plate of the spreader being horizontal.

Abstract: A single-and double-effect absorption refrigerator comprising a drum including both a preliminary low-temperature regenerator having a low-temperature heat source and a condenser, a piping for low-concentration liquid absorbent extending from an absorber to the preliminary low-temperature regenerator through the pump for low-concentration liquid absorbent, a piping for intermediate-concentration liquid absorbent having a pump for intermediate-concentration liquid absorbent and extending from the preliminary low-temperature regenerator to a high-temperature regenerator, and a pipe for liquid absorbent connecting a part of the piping for intermediate-concentration liquid absorbent provided on a drawing side of the pump for intermediate-concentration liquid absorbent to a pipe for high-concentration liquid absorbent extending from a low-temperature regenerator to a low-temperature heat exchanger.

Abstract: 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 of the generator. Singular or plural amounts of change representative of externasl conditions are detected. A heating amount of the generator is controlled by a fuzzy logic calculation.

Abstract: An absorption refrigeration system having an absorption refrigeration cycle which is formed by connecting a plurality of absorbers, a regenerator, a condenser and an evaporator with one another by means of pipes; the absorption refrigeration system comprising ejectors for bleeding a noncondensing gas accumulated in each of the absorbers and a noncondensing gas tank for storing the noncondensing gas which is bled therein, both of which are provided for each absorber.