Novel unit structure for absorption machines capable of realizing big temperature difference

Abstract

The invention discloses a novel unit structure for absorption machines capable of realizing big temperature difference, which belongs to the technical field of absorption heat pumps or absorption refrigerators in energy-saving technology. The structure comprises two structure forms, namely a big-temperature-difference generation-condensation basic unit and a big-temperature-difference evaporation-absorption basic unit, wherein the big-temperature-difference generation-condensation basic unit consists of an external solution-hot water plate heat exchanger and a generator-condenser; the generator-condenser is divided into sections from D1, D2 to Dn by baffles; solution grooves are arranged on the baffles at each level; and a pressure isolation device and a condensed water collection device are arranged on a bottom board of the solution grooves. The big-temperature-difference evaporation-absorption basic unit and the big-temperature-difference generation-condensation basic unit are basically the same in structure form. The structure forms pressure gradient in a whole generation-condensation or evaporation-absorption process, realizes that the internal heat / mass transfer process of the basic units is matched with the big temperature difference of an external heat / cold source, and greatly increases adjustable degree of freedom, so that big-temperature-difference absorption machinesunder various requirements can be constructed.

Description

technical field [0001] The invention belongs to the technical field of absorption heat pumps or absorption refrigerators in the energy-saving technology, and in particular relates to a novel unit structure of an absorption machine capable of realizing a large temperature difference. Background technique [0002] The heating energy consumption of urban buildings in northern my country is 40% of the national urban building energy consumption, which is the focus of building energy conservation in my country. At present, more than 70% of urban buildings in the north adopt centralized heating methods with different heat sources. In recent years, a series of new central heating processes based on absorption heat pumps and absorption heat exchangers (such as a patent: a large temperature difference central heating system, ZL 200810101065.X.) have been proposed, which can make the central heating system The energy consumption is reduced by more than 30%, and the heat delivery capac...

AI Technical Summary

Problems solved by technology

Therefore, the above-mentioned methods of realizing large temperature differences are all based on the perspective of the overall circulation of the process, and are methods of studying the problem from the outside, not from the mismatch loss that may occur in the internal process caused by the large temperature difference at the source side, so it cannot be found. The fundamental solution to solve the problem of large temperature difference on the source side

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