Diffused absorption refrigeration and hot water system using solar power

A hot water system and solar collector technology, applied in the field of refrigeration and hot water production using solar energy, can solve the problem that the overall performance of the refrigeration system cannot take a big step, the solar water heater can only produce hot water, and the vacuum degree is required to be high. problems, to achieve considerable economic benefits, low operating pressure, low operating pressure

Inactive Publication Date: 2011-02-16
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For adsorption combined cooling and heating technology, due to the limitation of the performance of the adsorbent, the overall performance of the refrigeration system has not been able to take a big step forward
Lithium bromide absorption technology is difficult to miniaturize the unit, the system is huge, the cost is high, and the vacuum degree is high, the technology is complicated, and the current penetration rate is relatively small
For hot water production by solar water heaters, there are currently many applications and a high penetration rate, but solar water heaters can only produce hot water but not cold water

Method used

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  • Diffused absorption refrigeration and hot water system using solar power
  • Diffused absorption refrigeration and hot water system using solar power

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Experimental program
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Effect test

Embodiment

[0013] see figure 1 As shown, the diffusion absorption refrigeration and hot water system using solar energy includes a solar collector 1, a bubble lift pump 2, a dilute solution tank 3, a rising pipe 4, a condenser 5, a U-shaped pipe 6, an evaporator 8, Gas heat exchanger 9, concentrated solution tank 11, absorber 10, solution heat exchanger 12 also include helium cylinder 7, and described helium cylinder 7 is connected on the evaporator 8, and the outer tube of solution heat exchanger 12 It is connected to one end of the dilute solution tank 3, the inner pipe is connected to the concentrated solution tank 11, and the absorber 10 is also connected to the gas heat exchanger 9; and the tap water connecting pipe E1 connected to the absorber 10, and the hot water outlet connected to the condenser 5 E4, the condenser 5 and the absorber 10 are connected through pipelines, and the pipeline is provided with an absorber water outlet E2 and a condenser water inlet E3.

[0014] The spe...

specific Embodiment approach

[0017] Heat source temperature requirements: The heat collection temperature of the solar collector should not be less than 80°C. The specific implementation is as follows:

[0018] Fill the system with a certain amount of TFE-TEGDME and He before the operation of the refrigeration and hot water system. The solar heat collector 1 is irradiated by sunlight, and the TFE and TEGDME solutions in the heat collector are heated and evaporated to produce TFE vapor. After being lifted by the bubble lift pump 2, the solution and TFE gas in the heat collector flow into the dilute solution tank 3. In the dilute solution tank, the dilute solution flows to the lower part of the tank body, and the TFE gas enters the condenser 5 through the riser pipe 4, and condenses into a TFE liquid in the condenser. The TFE liquid enters the evaporator 8 after passing through the U-shaped pipe 6. Due to evaporation There is auxiliary gas He in the vessel 8, which reduces the partial pressure of TFE, so t...

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Abstract

The invention discloses a refrigeration and hot water system taking trifluoroethanol (TFE) and tetraethylene glycol dimethyl ether (TEGDME) as working media, which can provide cold water and hot water simultaneously. A heat source for the system is solar power. The system comprises a solar thermal collector, a bubble elevator pump, a condenser, a U-shaped pipe, an evaporator, an absorber, a solution heat exchanger, a gas heat exchanger, a liquid accumulator and the like. A rectifier is not needed to be arranged in the system due to large difference of boiling points of the TFE and the TEGDME, helium is introduced into the system and is used as auxiliary gas, and the cold water and the hot water are generated in a diffused absorption mode of TFE-He-TEGDME components serving as the working media; and the mode solves the problem of vacuum leakage when TFE-TEGDME components serve as the working media, simultaneously, solves the problem that the pressure of the absorption refrigeration system is overlarge when ammonia water is used as the working medium, so that the pressure of the integral system is maintained to be close to one atmosphere. The system is not provided with a solution pump, a compressor and a throttling valve, does not cause vibration and noise, does not consume electric energy and saves energy. The refrigeration working media do not contain freon working media, so the destruction to the ozone layer is reduced.

Description

technical field [0001] The present invention is a diffusion absorption refrigeration and hot water system using solar energy, which relates to the technical field of heating, ventilation and air conditioning, in particular to the technical field of refrigeration and hot water heating using solar energy, and is applied to refrigeration and hot water in families, office areas and Combined heating and cooling in the living area. Background technique [0002] Most of the refrigeration technologies at home and abroad use mechanical compression, using freon and its substitute working fluid or ammonia as the refrigerant. The system is complex, the equipment is expensive, and the energy consumption is large. The absorption refrigeration technology using ammonia water as the working medium, since the standard boiling point difference between the refrigerant ammonia and the absorbent water is only 133.4°C, the steam in the generator will contain a small amount of water vapor, so it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B29/00F25B41/00F24J2/00F25B15/02F25B27/00
CPCY02E10/40Y02B30/62Y02A30/27
Inventor 卜宪标马伟斌黄远峰李华山
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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