Abstract:
A method and device refrigerate a fluid by adding a volatile liquid mist to a flow of a gas to saturate the gas with vapor of the volatile liquid, to cause a large amount of misty minute liquid drops of the volatile liquid to float in the gas and to form a cooling gas. The cooling gas is directed through a first flow passage of a heat exchanger having first and second flow passages. The fluid to be refrigerated is directed through the second flow passage of the heat exchanger, so that heat from the fluid is transferred to the cooling gas, while the cooling gas passes through the first flow passage of the heat exchanger to elevate the temperature of the cooling gas. A portion of the minute liquid drops floating in the cooling gas are allowed to vaporize due to the elevated temperature of the cooling gas. The temperature of the cooling gas is continuously lowered by the heat of vaporization of the vaporizing minute liquid drops. The fluid passing through the heat exchanger is thus continuously refrigerated with the cooling gas having the continuously lowered temperature.
Abstract:
A resistor, such as a resistor wire, is contained in a sheet, preferably a low density sheet consisting mainly of inorganic fiber. Adsorbent or absorbent (hereinafter "sorbent" collectively) is fixed to the sheet to obtain sorbing characteristics, such that desorption and reactivation can be accomplished by applying an electric current to the resistor to heat the sheet. A sorbing laminate with many channels may be used by laminating the sorbing sheets. The sorbing sheet can therefore be heated directly from the inner side by the resistor contained in the sheet desorbing the sheets rapidly while the time for reactivating the sorbing sheet is reduced and the reactivation efficiency increased.
Abstract:
A gas adsorbing element is formed into a honeycomb-shaped laminate having many small channels penetrating from one end surface to the other and in which hydrophobic high silica zeolite powder is exposed on the walls of the small channels. The hydrophobic high silica zeolite is, for example, a zeolite which is produced by removing most of the aluminum component from an ordinary zeolite. In forming the honeycomb-shaped laminate, it is favorable that non-flammable sheets are laminated and the laminate is impregnated with a dispersion of high silica zeolite powder and with an inorganic binder, and that the high silica zeolite powder is fixed in fiber gaps and on the surface of the non-flammable paper. It is desirable that the non-flammable sheet is a low density inorganic fiber paper and is baked either before or after forming the honeycomb-shaped laminate. This element adsorbs little water vapor even when the process air is highly humid, and is able to adsorb and remove organic solvent vapor and bad odor material in the air with high efficiency.
Abstract:
In an adsorbing body for humidity and odorous gas exchange such as an adsorbing sheet for dehumidification, an adsorbing element for dehumidification or an adsorbing element for total heat energy exchange, a sheet or a honeycomb laminate is impregnated or coated with silica sol containing, as solid content, not more than 30% of the silica sol weight of minute silica particles not larger than 120 Å in diameter which contain many stable silanol radicals on the surface and 0.01-1% of alkali metal ion Na2O. It is then dried to rigidly fix silica gel. Other humidity adsorbing or absorbing agents such as zeolite, organic high-polymer electrolyte, etc. may be mixed in said silica sol. Silica gel with excellent humidity adsorbing ability can be strongly adhered to a sheet or a honeycomb laminate in an extremely simple method.
Abstract:
The present invention makes it possible to fix as much gas adsorbent or catalyst particles as possible to a gas adsorbing element or to a catalyst carrier having a honeycomb structure and also to improve the form-maintaining property of a honeycomb laminate after heat-treatment or during wet conditions so that operation becomes easy when impregnating the honeycomb laminate with a dispersion of gas adsorbent or catalyst particles. A honeycomb laminate is formed with paper including mostly ceramic fiber or glass fiber and mountain leather or with paper including mostly carbon fiber and mountain leather. The paper is then heat-treated, is impregnated with a dispersion of gas adsorbent or catalyst particles, is impregnated with a dispersion of inorganic binder such as silica sol or alumina sol, and is dried.
Abstract:
An article to be dried is transferred and pressed and held between a wire endless conveyor and a flexible conveyor. The wire endless conveyor is placed between a nozzle, including a sucking-out nozzle and a blowing nozzle, and the cushion conveyor to press, hold and transfer the article to be dried. The nozzle dehydrates/dries the article to be dried. When an article to be dried is narrower than the width of the nozzle, the area where the article to be dried does not cover the sucking-out nozzle or the blowing nozzle is automatically shut by the flexible conveyor. The article to be dried is dehydrated/dried while it is pressed, held and transferred so that a high speed air jet stream and high speed negative pressure air stream do not flow out/in to outer air. While the article to be dried is transferred, pressed and held by the flexible conveyor, water adhering to it is formed into minute water drops by the high speed air jet stream and the high speed negative pressure air stream. The minute water drops are sucked and removed on the high speed negative pressure air stream. Thus dehydrating/drying can be performed continuously without water evaporation heat, in a short time and efficiently with little energy. Further, articles of various sizes and irregular shapes can be dried.
Abstract:
Adsorbents are used whose equilibrium isotherms for adsorption show no rapid rise in relative humidity more than 40% and whose equilibrium isotherms for adsorption and desorption show no hysteresis phenomenon and in which adsorbed humidity does not cause capillary condensation, for example, A-type or RD-type silica gel or hydrophilic zeolite. Adhesive or binder is applied on the surface of a metallic sheet, a plastic sheet or a ceramic fiber paper, and particulates of the above-mentioned adsorbents are fixed on or in it to get a total heat energy exchanger material. The total heat energy exchanger material is corrugated and laminated to obtain a total heat energy exchanger element. When outer air or return air contains various odorous gases, these odorous gases can be mostly prevented from transferring into supply air through the total heat energy exchanger. When particulates of the above-mentioned adsorbents and chemical blowing agents are mixed in adhesive and said chemical blowing agents are made to blow by heating, the part of adsorbent particulates buried in the adhesive layer can also function as adsorbent through communicating pores and thus total heat energy exchange efficiency can be increased.
Abstract:
A gas adsorbing element is formed into a honeycomb-shaped laminate having many small channels penetrating from one end surface to the other and in which hydrophobic high silica zeolite powder is exposed on the walls of the small channels. The hydrophobic high silica zeolite is, for example, a zeolite which is produced by removing most of the aluminum component from an ordinary zeolite. In forming the honeycomb-shaped laminate, it is favorable that non-flammable sheets are laminated and the laminate is impregnated with a dispersion of high silica zeolite powder and with an inorganic binder, and that the high silica zeolite powder is fixed in fiber gaps and on the surface of the non-flammable paper. It is desirable that the non-flammable sheet is a low density inorganic fiber paper and is baked either before or after forming the honeycomb-shaped laminate. This element adsorbs little water vapor even when the process air is highly humid, and is able to adsorb and remove organic solvent vapor and bad odor material in the air with high efficiency.
Abstract:
A method and device refrigerate a fluid by adding a volatile liquid mist to a flow of a gas to saturate the gas with vapor of the volatile liquid, to cause a large amount of misty minute liquid drops of the volatile liquid to float in the gas and to form a cooling gas. The cooling gas is directed through a first flow passage of a heat exchanger having first and second flow passages. The fluid to be refrigerated is directed through the second flow passage of the heat exchanger, so that heat from the fluid is transferred to the cooling gas, while the cooling gas passes through the first flow passage of the heat exchanger to elevate the temperature of the cooling gas. A portion of the minute liquid drops floating in the cooling gas are allowed to vaporize due to the elevated temperature of the cooling gas. The temperature of the cooling gas is continuously lowered by the heat of vaporization of the vaporizing minute liquid drops. The fluid passing through the heat exchanger is thus continuously refrigerated with the cooling gas having the continuously lowered temperature.
Abstract:
In an adsorbing body for humidity and odorous gas exchange such as an adsorbing sheet for dehumidification, an adsorbing element for dehumidification or an adsorbing element for total heat energy exchange, a sheet or a honeycomb laminate is impregnated or coated with silica sol containing, as solid content, not more than 30% of the silica sol weight of minute silica particles not larger than 120 .ANG. in diameter which contain many stable silanol radicals on the surface and 0.01-1% of alkali metal ion Na.sub.2 O. It is then dried to rigidly fix silica gel. Other humidity adsorbing or absorbing agents such as zeolite, organic high-polymer electrolyte, etc. may be mixed in said silica sol. Silica gel with excellent humidity adsorbing ability can be strongly adhered to a sheet or a honeycomb laminate in an extremely simple method.