Solar-Powered Air Conditioning System Using a Mixture of Glycerin and Water to Store Energy

a technology of solar energy and glycerin, which is applied in the field of solar energy-powered air conditioning systems, can solve the problems of high cost of glycerin and other problems

Inactive Publication Date: 2009-12-10
CHEN CHENGJUN JULIAN
View PDF7 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]As an apparatus in a residential home or an office, safety is a major consideration. Glycerin is a popular food ingredient and a commonly used skin-care lotion, therefore it is very safe.

Problems solved by technology

Decades ago, glycerin was fairly expensive.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Solar-Powered Air Conditioning System Using a Mixture of Glycerin and Water to Store Energy
  • Solar-Powered Air Conditioning System Using a Mixture of Glycerin and Water to Store Energy
  • Solar-Powered Air Conditioning System Using a Mixture of Glycerin and Water to Store Energy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011]FIG. 1 shows a solar-powered stand-alone air-conditioning system for a single room, which is very popular in Asia. Solar panel 101 is installed either on a south-facing roof or a south-facing awning. Through cable 102, the electrical current from the solar panel 101 drives a vapor-compression refrigeration unit, 103 through 109. The compressor 103 compresses the refrigerant through pipe 104 into condenser 105. Here, a fan 106 disperses the heat of the compressed refrigerant into air. Both the compressor 103 and the fan 106 are driven by a DC motor 107, powered by the solar panel 101. After condensing, through pipe 108, the refrigerant is let to expand by the expansion valve 109. The expanded refrigerant is going through a thermally insulated pipe 110 into a heat-exchange coil 111 to freeze the energy-storing medium 112, a mixture of glycerin and water, in a thermally insulated container 113. The air in the room flows through the heat-exchange tubes 114, and cooled by the energ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A solar-powered air conditioning system comprising an energy-storage medium of 5%-10% glycerin and 90%-95% water in a thermally insulated container, a solar photovoltaic panel, a vapor-compression refrigeration unit driven by a DC motor powered directly by the solar photovoltaic panel, a heat-exchange coil to cool a stream of air by the energy-storage medium, and a ventilation apparatus to circulate the cooled air. In the presence of sunlight, the electrical current generated by the solar panels drives the vapor-compression refrigeration unit to freeze the mixture of glycerin and water. In the absence of sunlight, the frozen mixture of glycerin and water keeps temperature low. The flowing air cooled by heat-exchange coils through the energy-storage medium circulates in the room or the entire building to keep the space cool.

Description

BACKGROUND OF THE INVENTION[0001]Cooling of buildings consumes a huge amount of energy worldwide. For example, in southeast and southwest regions of the US, air conditioning is the dominant end user of energy and the single leading cause of peak demand for electricity. From economics point of view, reducing electricity demand for space cooling could save a lot for consumers. From utility-infrastructure point of view, reducing air-conditioning electricity loads can lower demand for annual power generation and peak capacity. Coincidentally, in regions where air conditioning is needed the most, solar energy is also abundant. Especially, from day to day, the stronger the sunlight, the more air conditioning power is needed. Therefore, to utilize sunlight to power air conditioning is a logical solution.[0002]A basic problem of solar-powered air conditioning is energy storage. Solar energy is only available in sunny days, not in evenings and nights. By directly using the solar electricity ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F25B27/00
CPCF24F5/0007F24F2005/0064F25B27/005Y02B10/24F25D16/00Y02B10/20F25B2400/24
InventorCHEN, CHENGJUN JULIAN
OwnerCHEN CHENGJUN JULIAN