摘要:
A refrigeration system includes an outdoor unit having a refrigeration compressor and a heat exchanger, and an indoor unit having a heat exchanger to be placed where air conditioning is desired. In installing the refrigeration system, the outdoor unit is first connected with the indoor unit via pipe lines, and an air absorbing device containing zeolite as an adsorbent is subsequently placed on the outdoor unit, the indoor unit, or the pipe lines to remove air. The air absorbing device is then separated from the refrigeration system, and refrigerant is caused to circulate through the refrigeration system.
摘要:
A refrigeration system includes an outdoor unit having a refrigeration compressor and a heat exchanger, and an indoor unit having a heat exchanger to be placed where air conditioning is desired. In installing the refrigeration system, the outdoor unit is first connected with the indoor unit via pipe lines, and an air absorbing device containing zeolite as an adsorbent is subsequently placed on the outdoor unit, the indoor unit, or the pipe lines to remove air. The air absorbing device is then separated from the refrigeration system, and refrigerant is caused to circulate through the refrigeration system.
摘要:
A method for constructing a refrigerating cycle that has a unit having a refrigerating compressor which is filled with a part or all of a quantity of working medium beforehand and a heat exchanger, and a unit having a heat exchanger that is located in an area of air conditioning and refrigeration, wherein the units are connected with each other by piping, uses such steps of: connecting the unit having the refrigerating compressor and heat exchanger with the unit having the heat exchanger that is located in an area of air conditioning and refrigeration by means of piping; removing oxygen in a system of the refrigerating cycle by providing an oxygen absorbent in a course of a refrigerant circulating path; separating the oxygen absorbent from the refrigerating cycle; and circulating a refrigerant in the refrigerating cycle, wherein the separating step is carried out immediately after or after the removing step, and the refrigerant circulating step is a final step.
摘要:
A hologram recording device, which comprises a recording layer of a polymer composition a photoconductive element, a second-order super-polarization element and an electron or hole capturing material and having a non-centro symmetric structure is disclosed. Transparent electrode layers are provided on each side of the recording layer. The hologram recording device is capable of space light modulation and real time hologram recording. Also disclosed is a method of manufacturing the hologram recording device and a method of hologram recording using the device. The hologram recording material is of a polymer composition a photoconductive element, a second-order super-polarization element and an electron or hole capturing element. The polymer composition has a non-centro symmetric structure. The hologram recording device according to the invention comprises a recording layer of a polymer composition including a photoconductive element and a second-order super-polarization element. The polymer composition has a non-centro symmetric structure, and transparent electrodes are provided on each side of the recording layer. It is thus possible to provide a hologram recording element, which is suitable for space light modulation and real time hologram recording and which also serves as a phase conjugate device.
摘要:
The invention relates to a non-linear optical material comprising a salt of an organic compound with an optically active organic acid, wherein said organic compound has a conjugated .pi. electron system containing both electron donor and acceptor groups and has at least one substituent group represented by the following formulas (1), (2) and (3) which is located outside of said conjugated .pi. electron system. The invention also concerns a method of manufacturing the optical material and an optical converter which uses the non-linear optical material. ##STR1## According to the invention, a second-order non-linear optical material, which is readily capable of crystal growth, permits a large crystal to be readily obtained, and ensures high hardness of the crystal and gives excellent processibility and non-linear optical characteristics.
摘要:
The invention relates to a non-linear optical material comprising a salt of an organic compound with an optically active organic acid, wherein said organic compound has a conjugated .pi. electron system containing both electron donor and acceptor groups and has at least one substituent group represented by the following formulas (1), (2) and (3) which is located outside of said conjugated .pi. electron system. The invention also concerns a method of manufacturing the optical material and an optical converter which uses the non-linear optical material. ##STR1## According to the invention, a second-order non-linear optical material, which is readily capable of crystal growth, permits a large crystal to be readily obtained, and ensures high hardness of the crystal and gives excellent processibility and non-linear optical characteristics.
摘要:
A nonlinear optical compound of the formula: ##STR1## and optionally a .pi. electron conjugated organic compound having an electron donative group and an electron attractive group, which has high conversion efficiency.
摘要:
The invention provides a nonlinear optical material comprising a compound represented by the general formula (1): ##STR1## wherein R.sup.1 denotes an electron attractive group, R.sup.2 denotes a group selected from the group consisting of a hydrogen atom, methyl group, methoxy group and electron attractive group, R.sup.3 denotes a straight-chain alkylene group, and X denotes an oxygen or sulfur atom. The invention also relates to a method of manufacturing a nonlinear optical material comprising the steps of dissolving a compound represented by the general formula (1) in an organic solvent, and evaporating the solvent while keeping its temperature constant or lowering its temperature, thereby growing a crystal of the compound represented by the general formula (1). The nonlinear optical material of the invention possessing a molecular structure realized by linking structures having a strong electron attractive group and weak electron donative portion with straight-chain alkylene portions, and thus a nonlinear optical material having a shortened absorption edge wavelength and excellent crystallinity may be obtained. These nonlinear optical materials can be effectively utilized as the nonlinear optical material for an optical wavelength converter.
摘要:
The present invention provides novel polymerizable substituted amide compounds which are derived from isocyanate compounds and which are useful in the preparation of nonlinear optical materials. The polymerizable substituted amide compound of the present invention represents by the formula; ##STR1## wherein R and R.sup.1 respectively represent a hydrogen atom or a lower alkyl group, A represents --X--(CH.sub.2).sub.n -- in which X represents an oxygen atom or --NH-- and n is an integer of 1 to 6, and m shows 0 or 1. The present invention also provides a homo- or co-polymer derived from the polymerizable substituted amide compound. The present invention further provides a nonlinear optical composition containing the homo- or co-polymer.
摘要:
The present invention provides novel polymerizable substituted amide compound which are derived from the isocyanate compounds and which are useful in the preparation of nonlinear optical materials. The polymerizable substituted amide compounds of the present invention are represented by the formula; ##STR1## wherein R and R.sup.1 respectively represent a hydrogen atom or a lower alkyl group, A represents --X--(CH.sub.2).sub.n -- in which X represents an oxygen atom or --NH-- and n is an integer of 1 to 6, and m shows 0 or 1. The present invention also provides a homo- or co-polymer derived from the polymerizable substituted amide compound. The present invention further provides a nonlinear optical composition containing the homo- or co-polymer.