FIELD OF INVENTION

[0001 ] The present invention relates to the field of refrigeration technology. More particularly, the present invention relates to a temperature indicator. Particularly the present invention relates to a gel based room temperature indicator used for power saving. Specifically, the said gel comprises of constituents such as cellulose gum, propylene glycol, aluminum sulphate, sodium bi carbonate, dowicil 75, methamine and coloring agent. The present invention is used for indicating and resisting the exact temperature in the freezing rooms which is used for saving electricity consumption.

BACKGROUND OF THE INVENTION

[0002] The existing system of domestic refrigerator or commercial temperature control system utilizes more electricity while the door opens and as a consequence the temperature varies in the atmosphere. Further because of this temperature change, there will be a huge wastage of electricity.

[0003] A known prior art relates to temperature indicating compositions which display temperature dependent color changes and the temperature indicating material comprises about 0. 1 % to about 99.9% by weight or about 15% to about 35% by weight of the temperature indicating clay. Further it also discloses that the indicators or probes can take a variety of forms such as powders, films, surface coatings, wafers, tubes, inks, paints, waxes, gels, and shaped articles (e.g., plates, vessels, containers, caps, etc.) with clay material admixed, suspended, impregnated therein or applied as a surface coating thereto. But the present invention discloses the indicator with gel without any admixture and which is portable and cheap. [0004] Thus the present invention overcomes the inadequacies of the prior art by providing gel based temperature indicator which efficiently saves electricity and also reduces the over usage of compressor.

OBJECTS OF THE INVENTION

[0005] One or more of the problems of the conventional prior art may be overcome by various embodiments of the present invention.

[0006] Accordingly, the primary object of the present invention is to provide a gel based room temperature indicator.

[0007] It is one object of the present invention, wherein the said gel comprises of the constituents such as cellulose gum, propylene glycol, aluminum sulphate, sodium bi carbonate, dowicil 75, methamine, and coloring agent.

[0008] It is another object of the present invention, wherein the said gel is fixed directly to the sensor.

[0009] It is one another object of the present invention, wherein the said gel based indicator will reduce the compressor cycle and results in power saving in a huge manner.

[0010] It is one object of the present invention, wherein the present invention increases the performance of the compressor and the lifetime of the compressor is also increased.

SUMMARY OF THE INVENTION

[001 1 ] The main aspect of the present invention is to provide a gel based room temperature indicator comprising gel.

[0012] It is one aspect of the present invention, wherein the said gel comprises of:

60-85% of water;

10- 30 % of propylene glycol; 0.1-0.5% of aluminum sulphate;

0.05-0.10% of Sodium bi carbonate;

0.1-0.5 % of dowicil 75;

0.01-0.05% of methamine;

0.001-0.005 of 1, 3-dichloropropene and

0.001-0.005 of dichloromethane.

[0013] It is another aspect of the present invention, wherein the said constituent is divided into two groups based on their hydrophilic and hydrophobic nature.

[0014] It is one another aspect of the present invention, wherein the said constituent is mixed together to make final gel.

[0015] It is another aspect of the present invention, wherein the said gel is pouched and packed in a specifically designed polypropylene container.

[0016] It is yet another aspect of the present invention, wherein the said indicator is fixed directly to the sensor.

[0017] It is one another aspect of the present invention, wherein the said indicator withstands a capacity of the temperature from -30° C to 36°C.

BRTEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 illustrates the indicator, according to the present invention. DETAILED DESCRIPTION OF INVENTION WITH REFERENCE TO THE ACCOMPANYING DRAWINGS

[0019] The present invention is a gel based temperature indicator which consistently indicates the room temperature to the compressor through the sensor, wherein the said indicator is illustrated in figure 1. This helps the sensor for proper identification of the room temperature when the door is opened and closed.

[0020] The main embodiment of the present invention is gel, wherein the said gel comprises of the constituents such as cellulose gum, propylene glycol, aluminum sulphate, sodium bi carbonate, dowicil75, methamine, and coloring agent and composition of the constituents of the said gel is given in below table.

[0021] The said constituents are divided into two groups according to their hydrophilic and hydrophobic nature and then mixed together to make final gel. The said gel is pouched and packed in a specifically designed polypropylene container.

[0022] In another embodiment of the present invention, the said gel based indicator is affixed into a sensor thus the gel performs efficiently and provides the actual temperature of the stored products instead of the atmosphere air temperature. This will reduce the compressor cycle and results in power saving in a huge manner. [0023] The said gel based indicator has withstanding capacity of temperature from -30°C to 36°C. Further in the present invention there are no mechanical or structural alterations required in the temperature sensor or freezing unit. Thus the invention is easily compatible with different types of products stored in the freezers.

[0024] This invention is further described through the following power saving performance of the present gel based room temperature indicator, which is only illustrative in the nature and should not be construed to limit the scope of invention.

[0025] The present invention is installed in the cold storage room (12 x l2 x 8) having storage condition between -23.3°C to -28.9 ^° C and the performance of the indicator is absorbed initially for one year and the efficiency is noted as:

> Operating cost reduced by 28.9%

> Compressor run hours reduced by 24.2%

> Compressor cycle reduced by 63%

> Kilowatt hours reduced by 23%

> Energy cost reduced by 30%. Thus the total Cost saving is 30.3 % for one year.

[0026] The present invention is installed in the cold storage room (8 x 8 x 8) having storing condition is between 35°F and 46°F (2°C and 8°C) for storing vaccines. The performance of the indicator is absorbed initially for one year and the efficiency is noted as:

> Operating cost reduced by 22.1 %

> Compressor run hours reduced by 20.9%

> Compressor cycle reduced by 61%

> Kilowatt hours reduced by 21%

> Energy cost reduced by 28%. Total Cost saving is 28.9% for one year. Advantages:

[0027] It is one advantage of the present invention, wherein the performance of the compressor is increased.

[0028] It is another advantage of the present invention, wherein the present invention increases per day cut off time so per day compressors on off cycles are reduced thereby power consumption and maintenance cost of the compressor is remarkably reduced.

[0029] It is one 'another advantage of the present invention, wherein there is a remarkable increase in Compressors life time.

[0030] It is one advantage of the present invention, wherein products quality is maintained by keeping optimum storage condition of the freezers.

[0031] It is yet another advantage of the present invention, wherein the present invention reduces the energy consumption in refrigerator, cooling rooms and freezer rooms.

[0032] It is one advantage of the present invention, wherein the present invention reduces 40- 60% of C0 ² emission, thus it is atmospheric friendly.