Direct heat recovery absorption refrigeration system

A direct heat recovery absorption refrigeration system using a solution and refrigerant contained in the solution as working mediums, comprising:

• (a) a generator for heating solution introduced thereto to produce high temperature and high-concentrated solution, and to evaporate refrigerant into vapor;
• (b) a condenser in communication with said generator, for condensing refrigerant vapor coming from said generator;
• (c) a throttling device in communication with said condenser, for throttling condensed refrigerant coming from said condenser;
• (d) an evaporator in communication with said throttling device, having water circulating therewithin, capable of effecting heat transfer between the refrigerant coming from said throttling device and the circulating water;
• (e) an absorber in communication with said evaporator, having solution reservoired therewithin, for absorbing refrigerant coming from said evaporator by means of the reservoired solution;
• (f) and heat exchanger in communication with said absorber and said generator, for performing indirect heat exchange between part of the high temperature and high-concentrated solution coming from said generator and cold solution coming from said absorber to produce moderate temperature and low-concentrated solution;
• and
• (g) a high concentrated and low concentrated solution mixing device, disposed between said heat exchanger and said generator, for mixing another part of the high temperature and high-concentrated solution leaving said generator and the moderate temperature and low-concentrated solution entering said generator from said heat exchanger, whereby the temperature of the low-concentrated solution introduced into said generator reaches equilibrium temperature under the pressure in said generator.