Ammonia absorption type water chilling/heating device

Abstract

There is provided an ammonia absorption type water chilling/heating device in which a generator 22 generating by use of heat source a high pressure ammonia gas 21 from an ammonia aqueous solution 11, a rectifier 28 performing the gas-liquid separation into the ammonia gas 21 and a dilute ammonia solution 9, a condenser 23 condensing the ammonia gas 21 after separation, an evaporator 24 utilizing the cooling action generated when vaporizing an ammonia solution 94 after condensation, and an absorber 25 making the ammonia gas 21 after vaporization to be absorbed in an ammonia aqueous solution are successively disposed from the top in the described order, so that the dilute ammonia solution 9 is transferred by gravitation; and in the central portions of these components, there is arranged a solution pipe 30 through which the ammonia aqueous solution 11 is compressively transferred from the absorber 25 to the generator 22. Omission of a rectifying tower and connection piping, and scale reduction of the generator, absorber, etc., ascribable to the above described constitution, make it possible to reduce the whole device in scale and acquire the adaptability to a wide variety of heat sources.

1 . An ammonia absorption type water chilling/heating device, characterized in that: in the device, a generator  22  generating a high pressure ammonia gas  21  from an ammonia aqueous solution  11  by use of heat source, a rectifier  28  performing gas-liquid separation into the ammonia gas  21  and a dilute ammonia solution  9 , a condenser  23  condensing the high pressure ammonia gas  21  after the gas-liquid separation, an evaporator  24  utilizing the cooling action generated in the reduced pressure vaporization of a high pressure ammonia solution  94  after condensation, and an absorber  25  making the dilute ammonia solution  9  absorb the ammonia gas  21  after vaporization are successively disposed from the top, and in the interior of these components a solution pipe  30 , through which the ammonia aqueous solution  11  is compressively transferred from said absorber  25  to the generator  22 , is arranged.  
     
     
         2 . The ammonia absorption type water chilling/heating device according to  claim 1 , characterized in that in the device the generator  22  has a diffusion nozzle  44  at one end thereof, a number of heat exchanger pipes  27  each made of a spiral corrugate pipe having spiral grooves on the inner wall thereof are vertically arranged, and the lower end opening of the heat exchanger pipe  27  is made to face onto the rectifier  28 .  
     
     
         3 . The ammonia absorption type water chilling/heating device according to  claim 1 , characterized in that in the generator  22 , a plurality of stages of the heat exchanger pipes  27 , made of spiral corrugate pipes having the diffusion nozzle  44  at the outer end, wound horizontally and vorticosely are arranged in a stacked structure, the inner ends of these heat exchanger pipes  27  are connected to the protective pipe  98  surrounding the solution pipe  30  placed around the center of said generator  22 , and the lower end opening of the protective pipe  98  is made to face onto the rectifier  28 .  
     
     
         4 . The ammonia absorption type water chilling/heating device according to  claim 1 , characterized in that a liquid preheater  31  surrounding the spiral solution pipe  30  is arranged under the rectifier  28  and around the center of the condenser  23  so that the solution pipe  30  in the liquid preheater  31  is warmed by the dilute ammonia solution  9  separated by said rectifier  28 .  
     
     
         5 . The ammonia absorption type water chilling/heating device according to  claim 1 , characterized in that a supercooler  95 , cooling the ammonia solution  94  in the condenser  23  to a temperature not higher than the boiling point by utilizing the low-temperature heat of the low pressure ammonia gas  21  vaporized in the evaporator  24 , is arranged between the condenser  23  and evaporator  24  in such a manner as to face onto the condenser  23  and evaporator  24 .  
     
     
         6 . The ammonia absorption type water chilling/heating device according to  claim 5 , characterized in that a sprinkler  36  is arranged under the liquid preheater  31  in such a manner as to face onto the top of the absorber, and the dilute ammonia solution  9  sprayed by the sprinkler  36  under a high pressure is made to be vigorously stirred, be mixed with, and absorb the ammonia gas  21  being fed from the evaporator  24  to the absorber  25  and the ammonia solution  94  being fed from the discharge opening  109  of the evaporator  24 .  
     
     
         7 . The ammonia absorption type water chilling/heating device according to  claim 5 , characterized in that a sprinkler  36  is arranged under the liquid preheater  31  in such a manner as to face onto the top of the absorber, a suction pipe  110  inserted into the ammonia aqueous solution  11  in the liquid pool  29  is connected in such a manner as to face onto the jet holes of the sprinkler  36 , the dilute ammonia solution  9  sprayed by the sprinkler  36  under a high pressure is made to be vigorously stirred, be mixed with, and absorb the ammonia gas  21  being fed from the evaporator  24  to the absorber  25  and the ammonia solution  94  being fed from the discharge opening  109  of the evaporator  24 ; and simultaneously the ammonia aqueous solution  11  is sucked up through the suction pipe  110  by the negative pressure generated when the dilute ammonia solution  9  is sprayed under a high pressure by the sprinkler  36 , to be circulated in the absorber  25 .  
     
     
         8 . The ammonia absorption type water chilling/heating device according to  claim 1 , characterized in that the generator outer cylinder  40  constituting the generator  22 , the rectifier outer cylinder constituting the rectifier  28 , a condenser outer cylinder  67  constituting the condenser  23 , an evaporator outer cylinder  70  constituting the evaporator  24 , and an absorber outer cylinder  76  constituting the absorber  25  are successively and vertically arranged in a fixed and stacked structure; in the central portions of these components, the solution pipe  30 , through which the ammonia aqueous solution  11 , while being preheated through heat exchange, is compressively transferred from the absorber  25  to the generator  22 , and the liquid preheater  31  are arranged; and a top cover  41  is placed on the top of said generator outer cylinder  40 .  
     
     
         9 . The ammonia absorption type water chilling/heating device according to  claim 1 , characterized in that the generator outer cylinder  40  constituting the generator  22 , the rectifier outer cylinder constituting the rectifier  28 , a cooling water port  63  for use in feeding and discharging the cooling water in the cooling pipe  32  of the condenser  23 , the condenser outer cylinder  67  constituting the condenser  23 , the supercooler  95  cooling the ammonia solution  94  to a temperature not higher than the boiling point, cooled by the low pressure ammonia gas  21  vaporized in the evaporator  24 , and arranged between said condenser  23  and evaporator  24  in such a manner as to face onto the condenser  23  and evaporator  24 , the cooling water port  63  for use in feeding and discharging the cooling water for the supercooler  95 , the evaporator outer cylinder  70  constituting the evaporator  24 , a brine port  77  for use in feeding and discharging the brine for the refrigerating pipe  34  of the evaporator  24 , the absorber outer cylinder  76  constituting the absorber  25 , and the cooling water port  63  for use in feeding and discharging the cooling water for the cooling pipe  37  of the absorber  25 , are successively and vertically arranged in a fixed and stacked structure; in the central portions of these components, the solution pipe  30 , through which the ammonia aqueous solution  11 , while being preheated through heat exchange, is compressively transferred from the absorber  25  to the generator  22 , and the liquid preheater  31  are arranged; and a top cover  41  is placed on the top of said generator outer cylinder  40 .