Jingkelun Refrigeration Equipment Co., Ltd.

Beijing Jingkelun Engineering Design and Research Institute Co., Ltd.

Chinese Academy of Sciences

Peking University

Beijing Zhongke Nano-Think Print Technology Co., Ltd.

Jianguo Yang

Wenjie Cao

Weibo Xie

Chengjun Zhou

Jianhui Kang

Hui Zhao

Lixuan Hao

Tongqin Mao

Jilong Zhang

Haiying Chao

Xianting Zeng

Shiheng Yang

Quanjiang Wang

Ming Liu

Li Long Chen

Hangbing Lv

Yun Yang

Yanlin Song

Xia Wang

Xiaoxin Xu

Yiping Wang

Ke Xiao

Junzeng Li

Jiujiang Li

Chuangzi Shen

Xiaobing Sheng

A radiation heat dissipation and radiation heat collection-based cold and hot central air conditioning system includes a compressor, a liquid storage device, an indoor unit and an outdoor unit connected in sequence, the outdoor unit includes a radiation heat collector; the radiation heat collector includes a protective plate, a heat absorption plate, and a plate core; the heat absorption plate is located between the plate core and the protective plate; the plate core comprises a heat exchange medium inlet end and a heat exchange medium outlet end; and the heat absorption plate is used for transferring absorbed heat to a heat exchange medium circulating in the plate core. The heat absorption plate collects heat, and then transfers the heat to the heat exchange medium flowing in the plate core; and the heat exchange medium carrying the heat is compressed by the compressor, and then enters the indoor unit for heat exchange.

Radiation heat dissipation and radiation heat collection-based cold and hot central air conditioning system

Provided are a memory cell structure, a memory array structure, and a voltage biasing method. The memory cell structure includes: a substrate layer, a well layer and a transistor. The substrate layer is configured to support the memory cell structure; the well layer is embedded in the substrate layer, an upper surface of the well layer is flush with an upper surface of the substrate layer, and a transistor is arranged on the well layer.

Memory cell structure, memory array structure, and voltage biasing method

A single-stage carbon dioxide multi-split cooling and heating multifunctional central air conditioner, comprising a single-stage carbon dioxide circulation system using carbon dioxide as a circulation working medium; the single-stage carbon dioxide circulation system comprises an outdoor unit and a plurality of end heat exchangers provided in parallel; and the carbon dioxide medium performs cooling and/or heating in a circulating manner in a carbon dioxide compressor, an outdoor heat exchanger, a liquid storage tank and the end heat exchangers which are in communication with one another.

Single-stage carbon dioxide multi-split cooling and heating multifunctional central air conditioner

A carbon dioxide refrigerating system and a refrigerating method thereof. A carbon dioxide refrigerating system, comprising a compressor, a condenser, a liquid storage device, and an evaporator connected in sequence; a suction assembly is arranged between the compressor and the condenser, the suction assembly being in communication with the liquid storage device and in communication with a gas-liquid separator, the gas-liquid separator being arranged between the condenser and the liquid storage device, and the carbon dioxide gas in the liquid storage device or the gas-liquid separator being capable of being sucked back into the pipeline between the compressor and the condenser by means of the suction assembly.

Carbon dioxide refrigerating system and refrigerating method thereof

Disclosed is a flash closed heat exchanger, comprising a closed housing. A negative pressure fan is provided on the closed housing. A negative pressure environment is formed inside the closed housing by means of the negative pressure fan. A water atomization device is provided inside the closed housing. The water atomization device sprays atomized water into the inside of the closed housing, so that the atomized water evaporates into steam in the negative pressure environment. In the flash closed heat exchanger, the evaporation of atomized water is promoted in a closed negative pressure environment.

Flash closed heat exchanger

Provided is a nitrogen fixation gene island suitable for expressing in prokaryotic and eukaryotic systems, wherein the prokaryotic nitrogen fixation genes are modified using T7 promoters to make them suitable for eukaryotic expression.

Nitrogen fixation gene island suitable for expressing in prokaryotic and eukaryotic systems

A large-format printing apparatus includes multiple printing head units. Each of the printing head units can intermittently and steppingly move in a first direction and has a printing nozzle which can move reciprocatingly in a second direction which is perpendicular to the first direction for printing sub-images. Before printing starts, the printing head units are disposed at one end of a printing medium, and arranged to seamlessly splice the sub-images printed by the printing head units into a complete large-format printing image.

Large-format inkjet printing apparatus

Growing community of inventors

Beijing, China

Jianguo Yang