Abstract: An air purification member is provided that can reduce the generation of unpleasant odor or the occurrence of air contamination without necessitating frequent cleaning or replacement. The air purification member can be part of an air purification unit or an air conditioning apparatus. A first photocatalytic filter of an air purifier is a filter for purifying air that contains particulates containing viruses or microbes, and is provided with a photocatalytic filter and a photocatalytic apatite. The photocatalytic filter collects the particulates. The photocatalytic apatite removes viruses or microbes that are contained in the particulates collected by the photocatalytic filter.

Abstract: A fin (6) is provided with insertion holes (22) for receiving heat exchange tubes and a rib (15) extending generally parallel to an outer edge (25) of the fin (6). The rib (15) is placed closer to the outer edge (25) than all the insertion holes (22) are. The rib (15) is formed on the fin (6) such that when an inside diameter of the insertion holes (22) is set as D [mm], a distance between a center of the insertion hole (22) nearest to the rib (15) and the outer edge (25) is set as L [mm], a distance between a center of the rib (15) and the outer edge (25) is set as La [mm], a width of the rib (15) is set as LL [mm], a thickness of the fin (6) is set as t [mm], and a height of the rib (15) is set as h [mm], then 0.4<La<(L?D/2?0.5), and 0.15<LL<0.5, 0.05<t<0.15, 0.5t<h<2.5t.

Abstract: There is provided a stain-proofing coating composition being capable of forming a uniform stain-proofing surface by blending a hydrophilic material in a low concentration irrespective of kind of a polymer for a coating. The stain-proofing coating composition comprises the hydrophilic material (A), the hydrophobic polymer (B) for a coating, the organic solvent (C) for the hydrophobic polymer for a coating and the other organic solvent (D); the other organic solvent (D) being a high boiling point organic solvent having a boiling point higher than that of the organic solvent (C) for the hydrophobic polymer for a coating by 5° C. or more, and a ratio of the hydrophilic material (A) to the hydrophobic polymer (B) being from 1/99 to 50/50 (% by mass ratio).

Abstract: A cleaning treatment material has a mixture of a photosemiconductor catalyst and an apatite, which has a photocatalytic function. Secondary particles of the photosemiconductor catalyst are 0.1 to 1.0 ?m in diameter. In addition, secondary particles of the apatite are 1 to 10 ?m in diameter.

Abstract: An air conditioner that can decompose and remove bacteria, viruses and the like, which are sources of odor, with efficiency is provided. The air conditioner includes a resin part and an apatite having a photocatalytic function. The resin part forms an air distribution path. The apatite is disposed on at least part of the resin part.

Abstract: The heat exchanging unit includes an indoor air exhaust passageway, an outdoor air supply passageway, a heat exchange element, and a first air cleaning member. The indoor air exhaust passageway exhausts indoor air to an outdoor space as exhaust air. The outdoor air supply passageway supplies outdoor air to an indoor space as supply air. The heat exchange element exchanges at least a sensible heat of the sensible heat and a latent heat between the exhaust air and the supply air. The heat exchange element communicates with the indoor air exhaust passageway and the outdoor air supply passageway. The first air cleaning member is provided at a supply airflow upstream side of the heat exchange element. The first air cleaning member has an apatite that has a photocatalytic function.

Abstract: Conductive paste allowing narrowing of an electrode prepared from the conductive paste and suppressing increase of resistance resulting from a small sectional area of the electrode is obtained. This conductive paste comprises binder resin, a conductive material dispersed in the binder resin and an additive, dispersed in the binder resin, containing at least either layered sulfide particles or spheroidal particles.

Abstract: A method for refrigerant and oil collecting operation capable of assuring the cleanliness of the inside of an existing communication pipe at a low cost and installing, at a low cost, a new air conditioner, comprising a compressor (1), a heat source side heat exchanger (3), a decompressing mechanism (4), and a user side heat exchanger (5), comprising the steps of performing a pipe heating operation in a heating operation mode and performing a refrigerant and oil collecting operation to collect refrigerant to a heat source side heat exchanger (3), namely, with the refrigerant heated to a temperature higher than that where contaminants such as refrigerator oil inside a refrigerant circuit is dissolved into the refrigerant, performing the refrigerant and oil collecting operation so as to assure the cleanliness of the inside of the existing communication pipes (7, 8).

Abstract: There is provided a car air conditioner with a high COP, low GWP and high reliability. A simple refrigerant R32 is filled in a refrigerant circuit 1 of the car air conditioner. This simple refrigerant R32 has a high COP and low GWP, but is easily polarized and produces contaminants and sludge. However, these contaminants and sludge hardly block a motor-driven expansion valve 6 or the like due to vibration and impact of a car. Therefore, this car air conditioner has high reliability. Furthermore, since the simple refrigerant R32 is a simple substance, recycling after collection is easy.

Abstract: The present invention provides a simple determination method with regard to the reusability of refrigerant using equipment or refrigerant lines toward the goal of reusing refrigerant using equipment or refrigerant lines. The method of determining the reusability of refrigerant using equipment or refrigerant lines includes a first step and a second step. In the first step, residual material remaining inside refrigerant using equipment or refrigerant lines is applied to a check sheet. In the second step, a determination with regard to the reusability of the refrigerant using equipment or the refrigerant lines is performed based upon the color of the check sheet on which the residual material was applied.

Abstract: An air purification member is provided that can reduce the generation of unpleasant odor or the occurrence of air contamination without necessitating frequent cleaning or replacement. The air purification member can be part of an air purification unit or an air conditioning apparatus. A first photocatalytic filter of an air purifier is a filter for purifying air that contains particulates containing viruses or microbes, and is provided with a photocatalytic filter and a photocatalytic apatite. The photocatalytic filter collects the particulates. The photocatalytic apatite removes viruses or microbes that are contained in the particulates collected by the photocatalytic filter.

Abstract: A photoelectric conversion device capable of improving an open-circuit voltage is obtained. In this photoelectric conversion device, many of crystal grains contained in a third non-single-crystalline semiconductor layer have major axes substantially perpendicular to a main surface of a substrate on an interfacial portion between at least either a first non-single-crystalline semiconductor layer or a second non-single-crystalline semiconductor layer and the third non-single-crystalline semiconductor layer, and many of crystal grains contained in either semiconductor layer have major axes substantially parallel to the main surface of the substrate on the aforementioned interfacial portion.

Abstract: A multi-type refrigerator is capable of achieving a high coefficient of performance (COP) while using R32 as refrigerant and that takes account of energy saving and global warming. Refrigerating cycles are executed by circulation of R32 as refrigerant through a refrigerant circuit including one outdoor unit having a compressor, a condenser, and expansion means and a plurality of indoor units having evaporators. A filling quantity of R32 for the refrigerant circuit is set in a range from 120 to 300 g/kW (refrigerating capacity). The filling quantity of R32 for the refrigerant circuit is set in a range from 84 to 300 g/L (internal volume of the condenser).

Abstract: An energy-saving type refrigerating device capable of preventing global warming, allowing a communication pipe diameter to be reduced and the number of types of the communication pipe diameters to be reduced while a COP of over the COP obtained when R22 is used is provided by using, as a refrigerant, R32 with small global warming potential (GWP), comprising a compressor (23), a first heat exchanger (22), a expansion means (26), and a second heat exchanger (2), wherein R32 is used as a refrigerant, the diameter of a first communication pipe (42) is set to 2/8 in. and that of a second communication pipe (41) is set to ? in. in the refrigerating capacity range of 2.2 to 5.6 kW, the diameter of the first communication pipe (42) is set to 2/8 in. and that of the second communication pipe (41) is set to 4/8 in. in the refrigerating capacity range of 4.5 to 7.1 kW, and the diameter of the first communication pipe (42) is set to 2/8 in. and that of the second communication pipe (41) is set to ? in.

Abstract: The present invention provides a simple determination method with regard to the reusability of refrigerant using equipment or refrigerant lines toward the goal of reusing refrigerant using equipment or refrigerant lines. The method of determining the reusability of refrigerant using equipment or refrigerant lines includes a first step and a second step. In the first step, residual material remaining inside refrigerant using equipment or refrigerant lines is applied to a check sheet. In the second step, a determination with regard to the reusability of the refrigerant using equipment or the refrigerant lines is performed based upon the color of the check sheet on which the residual material was applied.

Abstract: An energy-saving refrigerating device is capable of preventing global warming, allowing a communication pipe diameter to be reduced and the number of types of the communication pipe diameters to be reduced while a COP of over the COP obtained when R22 is used is provided by using R32 with small global warming potential (GWP). The refrigerating device includes a compressor, a first heat exchanger, an expansion device, and a second heat exchanger. The diameters of first and second communication pipes are set to {fraction (2/8)} in. and ? in., respectively, in the refrigerating capacity range of 2.2 to 5.6 kW. The diameters of the first and second communication pipes are set to {fraction (2/8)} in. and {fraction (4/8)} in., respectively, in the refrigerating capacity range of 4.5 to 7.1 kW. The diameters of the first and second communication pipes are set to {fraction (2/8)} in. and ? in., respectively, in the refrigerating capacity range of 7.1 to 14.0 kW.

Abstract: A method for refrigerant and oil collecting operation capable of assuring the cleanliness of the inside of an existing communication pipe at a low cost and installing, at a low cost, a new air conditioner, comprising a compressor (1), a heat source side heat exchanger (3), a decompressing mechanism (4), and a user side heat exchanger (5), comprising the steps of performing a pipe heating operation in a heating operation mode and performing a refrigerant and oil collecting operation to collect refrigerant to a heat source side heat exchanger (3), namely, with the refrigerant heated to a temperature higher than that where contaminants such as refrigerator oil inside a refrigerant circuit is dissolved into the refrigerant, performing the refrigerant and oil collecting operation so as to assure the cleanliness of the inside of the existing communication pipes (7, 8).

Abstract: An energy-saving refrigerating device is capable of preventing global warming, allowing a communication pipe diameter to be reduced and the number of types of the communication pipe diameters to be reduced while a COP of over the COP obtained when R22 is used is provided by using R32 with small global warming potential (GWP). The refrigerating device includes a compressor, a first heat exchanger, an expansion device, and a second heat exchanger. The diameters of first and second communication pipes are set to {fraction (2/8)} in. and ⅜ in., respectively, in the refrigerating capacity range of 2.2 to 5.6 kW. The diameters of the first and second communication pipes are set to {fraction (2/8)} in. and {fraction (4/8)} in., respectively, in the refrigerating capacity range of 4.5 to 7.1 kW. The diameters of the first and second communication pipes are set to {fraction (2/8)} in. and ⅝ in., respectively, in the refrigerating capacity range of 7.1 to 14.0 kW.

Abstract: A refrigerator, comprising an oil deterioration judging device for judging a degree of deterioration of a refrigerating machine oil, wherein the oil deterioration of a refrigerating machine oil, wherein the oil deterioration judging device is disposed between a discharge side of a compressor and a gas closing valve, between a four-way directional control valve and the gas closing valve, or in a middle of a gas side connecting pipe.

Abstract: A working medium is used which is composed of an R32 refrigerant or a mixed refrigerant containing at least 70 wt % of the R32 and a polyvinyl ether oil whose viscosity at 40° C. is 46-82 cst. Thus, a refrigeration system capable of improving COP while ensuring sufficient reliability using a working medium containing an R32 refrigerant having a low GWP (Global Warming Parameter) is provided.