DE3143534A1 - Continuously running absorption refrigeration unit without a refrigerant distillation process - Google Patents

Abstract

The principle of continuously running absorption refrigeration units has been known for about 125 years. The major drawback of these units is the very low efficiency. With this principle, the energy which must be supplied is almost twice the refrigeration output generated. The reason is that the refrigerant distillation process in the stripper/condenser unit naturally requires at least the same energy consumption as the subsequent vaporisation of the refrigerant for the actual generation of cold. According to the invention, this refrigerant distillation process is replaced by reverse osmosis, so that the absorption refrigeration unit runs substantially more economically.

Description

Title: Continuously operating absorption refrigeration system

without refrigerant - distillation process.

Field of application: The invention relates to an absorption refrigeration system, such as it is used to generate cold.

Purpose: The purpose of the finding is to determine the efficiency of absorption refrigeration systems to be improved so that it is at least as good as that of compressor systems.

State of the art: The function of the absorption refrigeration system is known In such a system, almost all of the energy supplied is required in the expeller to evaporate the refrigerant. The refrigerant vapor is condensed again, as a result of which the supplied energy is released again and has to be dissipated. This distillation process has so far been necessary because only the pure and liquid refrigerant is used for cooling can be used.

Criticism: The distillation process has no cold generation Share, but only represents an undesirable consumer.

Task: The task of the invention is to provide an absorption refrigeration system to operate without a distillation process.

Solution: According to the invention, this object is achieved in that at A reverse osmosis filter is used in place of the distillation process apparatus will.

Advantages: The advantages achieved by this invention are therein that the amount of refrigerant available for refrigeration does not depend on the supplied amount of energy, but mainly on the size of the filter surface is dependent.

The supplied energy brings the solution to the for via a pump the pressure required for reverse osmosis. I) afor is, however, in proportion to the im Heat energy converted by the evaporator relatively little energy supplied is required, so that a performance ratio of 1 to 10 is possible.

In contrast, compressor systems only have one of n to 3 and Absorption refrigeration systems with a distillation process only have a rate of 1 to 0.7 description of the drawing: In the evaporator (1) is supplied with heat from the to be cooled Medium the refrigerant evaporates. This vapor is in the absorber (2) through the lean Solution absorbed. This releases the heat of evaporation and has to be cooled be discharged from the outside. The now rich solution is used by a pump (3) Reverse osmosis filter (4) transported and at the same time on the one for the reverse - Osmosis brought the required pressure. Im reverse - osmosis filter is now diffusing the refrigerant through the membrane.

The solution becomes poor again and flows through a control valve (5) back to the absorber. This valve is controlled in such a way that, on the one hand, the evaporator pressure in the absorber and on the other hand the high pressure on the membrane is maintained The refrigerant present on the evaporator side of the reverse osmosis filter flows Via a valve (6) to the evaporator, where it is again evaporated.

This valve only lets the liquid refrigerant through and prevents it so that the evaporation process already begins at the membrane.

Claims (1)

Claim: Absorbtionskälteanlage for generating cold, for Heat recovery and for converting heat into mechanical energy, characterized in that a reverse osmosis filter is used to recover the refrigerant from the solution will.