Ammonia water absorbing refrigerator

Abstract

The invention discloses an ammonia water absorption refrigerator for fishing boat aquatic products refrigerating and preserving utilizing diesel engine tail gas. The generator of the said invention is composed of shell and finned pipe bundle. Lower collector of the finned pipe bundle is inlet upper collector is outlet and connected separately with corresponding pipe mouths on rectifying tower; ripple silk net packing layer is set in the middle of the rectifying tower; a spray pipe for returns ammonia liquor is at the upper of the packing layer; ammonia outlet pipe at the top of the rectifying tower is connected with condenser; liquid trap in the condenser is connected with the rectifying tower spray pipe utilizing U-shape pipe; ammonia liquor outlet at the bottom of the condenser is connected with the evaporator via cooling device and expansion valve; the evaporator ammonia outlet is connected with absorber via cooling device; thick solution outlet at the bottom of the absorber is connected with the rectifying tower via solution pump, absorber upper pipe bundle and solution heat exchanger.

Description

technical field [0001] The invention relates to an ammonia absorption refrigerating machine, in particular to an ammonia absorption refrigerating machine which utilizes exhaust gas from a diesel engine to refrigerate and preserve fishery products from fishing boats. Background technique [0002] With the vigorous development of my country's fishery, higher requirements have been put forward for the preservation of seafood. At present, most fishing boats use diesel engines with more than 100 horsepower. The exhaust heat of diesel engines accounts for about 25% to 40% of the total fuel energy, and the exhaust gas temperature is generally around 400°C. It is also greater than 300 ° C, the temperature is relatively high, and it is easy to use. There are more than 200,000 fishing boats in my country, and most of them use ice to keep fish fresh. However, ice has its inevitable disadvantages: high cost, large loss of ice, and short preservation time of seafood. [0003] At presen...

AI Technical Summary

Problems solved by technology

There are more than 200,000 fishing boats in my country, and most of them use ice to keep the fish fresh. However, there are unavoidable disadvantages in bringing ice to sea: high cost, large loss of ice, and short preservation time of seafood

Although the ammonia water absorption chiller is the earliest artificial refrigeration method and can realize continuous refrigeration, it is generally considered to be a bulky and inefficient method, so innovations in compactness and efficiency are required

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