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98results about How to "Small limitations" patented technology

Variable frequency air source heat pump refrigeration and heating hot water triple generation unit

The invention discloses a variable frequency air source heat pump refrigeration and heating hot water triple generation unit. The unit comprises a variable frequency compressor, a hot water heat exchanger, a cold-warm heat exchanger and a fin heat exchanger; one end of the variable frequency compressor is in pipe connection with the hot water heat exchanger; an exhaust temperature sensor is mounted between the hot water heat exchanger and the variable frequency compressor; and one end of the hot water heat exchanger is connected with a hot water tank through two pipes, and the other end is inpipe connection with a four-way valve. The unit is a system integrating refrigeration, heating and hot water triple generation as a whole, and prevents mixing of hot water by adopting variable frequency control and living hot water multi-point temperature control. Meanwhile, the system can recover waste heat to heat the hot water during refrigerating in summer to improve the refrigerating energy efficiency and to obtain free hot water, and is used for warming and heating of the hot water through operation of a heat pump mode in winter to achieve the energy-conservation recycling. The unit is simple in operation and quick and convenient to use, can be suitable for different regions, and is small in limitation and wide in application range.
Owner:MAANSHAN NBWAVE HEAT ENERGY SCI

Transmitting apparatus, receiving apparatus, communication system, transmission method, reception method, and communication method

A transmitting apparatus, receiving apparatus, communication system, and a signal processing method for each apply a suitable modulation method and transmission path estimation method in accordance with the characteristics of the transmission information and capable of improving the transmission efficiency. At the transmission side, the method of estimation of the transmission path and the modulation method are selected in accordance with an attribute of the data to be transmitted, for example, the size of a packet to be transmitted, the transmission data is mapped by the selected modulation method, the signal is processed in accordance with the transmission path estimation method, and a transmission signal is created by increase fast Fourier transform processing and transmitted. At the reception side, the received signal is fast Fourier transformed, the transmission path is estimated by the transmission path estimation method selected at the transmission side, the received signal is corrected in accordance with the result, and the received data is reproduced in accordance with the modulation method. Therefore, it is possible to always adopt the optimum transmission method in accordance with the attribute of the transmission data etc. and possible to realize an improvement of a transmission efficiency and an enhancement of the quality of communication.
Owner:REDWOOD TECHNOLOGIES LLC

Building double-layer energy-saving window structure and energy saving method thereof

The invention discloses a building double-layer energy-saving window structure and an energy saving method thereof. An external window unit is formed by two layers of windows, i.e., an inner window and an outer window; one external window unit can be separately arranged, or a plurality of external window units are continuously arranged in parallel. The inner window is made from a bridge-cutoff aluminum alloy frame material and hollow glass; a double-layer energy-saving window is provided with a cavity, and the cavity is internally provided with an electrically-lifted rotary shutter curtain; the outer window is made from an aluminum alloy frame material and a single layer of glass. The building double-layer energy-saving window structure can effectively reduce the numerical value of a heat transfer coefficient of the outer window, fully utilizes the sunlight so as to achieve an ideal energy-saving effect, can effectively reduce the influence of building outdoor noise on the interior of a room, and can improve and adjust the indoor light environment by means of the electrically-lifted rotary shutter curtain in the cavity so as to improve the indoor environmental quality; the building double-layer energy-saving window structure can be flexibly installed, enriches the architecture modeling design and improves the whole quality of a building.
Owner:CHINA UNITED NORTHWEST INST FOR ENG DESIGN & RES

Processing method of circuit board gold finger, and gold finger circuit board

The invention discloses a processing method of a circuit board gold finger, and a gold finger circuit board, for solving the technical problems of quite high restrictions, very poor versatility and high proneness to waste of resources and increase of the cost existing in a conventional gold finger circuit board. The method comprises the following steps: providing gold finger copper-clad boards with gold finger patterns and gilded lead wires, non gold finger areas at the surfaces of outer sides being subjected to controlled depth milling and thickness reduction; laminating an external-layer dielectric layer and an external-layer metal layer at controlled depth milling and thickness reduction areas; laminating an internal-layer line layer and an internal-layer dielectric layer between the non gold finger areas of the two gold finger copper-clad boards; arranging pads between the gold finger areas of the two gold finger copper-clad boards; then, pressing to form a multilayer board; manufacturing an external-layer line; gilding the gold finger patterns to form gold fingers; performing the controlled depth milling and thickness reduction to remove a non gold finger portion apart from a formation area of the multilayer board so as to prepare the gold finger circuit board, wherein the gold finger circuit board comprises a circuit board main body and the multiple extending gold fingers.
Owner:SHENNAN CIRCUITS

Transmitting apparatus, receiving apparatus, communication system, transmission method, reception method, and communication method

A transmitting apparatus, receiving apparatus, communication system, and a signal processing method for each apply a suitable modulation method and transmission path estimation method in accordance with the characteristics of the transmission information and capable of improving the transmission efficiency. At the transmission side, the method of estimation of the transmission path and the modulation method are selected in accordance with an attribute of the data to be transmitted, for example, the size of a packet to be transmitted, the transmission data is mapped by the selected modulation method, the signal is processed in accordance with the transmission path estimation method, and a transmission signal is created by increase fast Fourier transform processing and transmitted. At the reception side, the received signal is fast Fourier transformed, the transmission path is estimated by the transmission path estimation method selected at the transmission side, the received signal is corrected in accordance with the result, and the received data is reproduced in accordance with the modulation method. Therefore, it is possible to always adopt the optimum transmission method in accordance with the attribute of the transmission data etc. and possible to realize an improvement of a transmission efficiency and an enhancement of the quality of communication.
Owner:REDWOOD TECHNOLOGIES LLC
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