Chifeng City is the first city in China where the government has led and issued a document uniformly requesting all urban areas to carry out end-to-end large-temperature difference renovation, which plays a very important role in demonstrating the realization of low-carbon heat supply. This paper introduces the cause and realization process of large temperature difference heating in Chifeng city center, and combines the local endowment of waste heat and renewable resources, under the guidance of the above requirements, the program and implementation steps of near-zero carbon heating can be developed according to local conditions.

From June 12th to July 14th, the JAKARTA FAIR 2024, the largest consumer goods exhibition in Southeast Asia, is held at JIExpo Kemayoran, Jakarta, Indonesia, gathering numerous local and international brands. Gree is participating in this Fair, which is of great significance for establishing Gree brand image and promoting local market sales in Southeast Asia. On the first day of the Fair, the exhibition is crowed with numerous visitors.

Ultra-low energy buildings aim to minimize operational energy consumption while providing occupants with better indoor air quality (IAQ) and thermal and humidity conditions than conventional housing. The core of this technological system is to maximize the use of passive technologies to reduce the cooling and heating demand of the building itself, while prioritizing the application of renewable energy sources to reduce the building heating, cooling and lighting energy consumption. Taking the Sino-German Passive Ultra-Low Energy Residence Promotion Demonstration District in Qingdao area as an example, this paper firstly introduces the passive design scheme of the passive ultra-low energy residence; secondly, the HVAC design scheme of the project is described in detail, including the design of the cooling and heating source system, the fresh air system, and the kitchen ventilation, etc.; and lastly, the continuous monitoring of the typical occupants is carried out, and the operation effect of the system is analyzed. The research in this paper aims to explore the passive design and HVAC design scheme of ultra-low-energy residences, and to provide technical experience for the low-carbon design of residences.

Have you ever noticed the tomatoes, potatoes, chili peppers, etc. that you eat on a regular basis, in fact, there may be “going” to space. All along, the world has not stopped the footsteps of space breeding experiments, hundreds of plant seeds have been sent to the International Space Station for cultivation. Among them, chili peppers are one of the most popular plants. Why are chili peppers so popular? Is there any radiation in food grown in space? Is it safe? It all starts with providing fresh food for the astronauts who stay in the space station for a long time.

Multi-split air conditioner, also known as variable refrigerant flow multi-split air conditioning system, consists of an outdoor unit connected to a number of direct evaporative indoor units of different or the same type and capacity, constituting a set of single cooling/heating cycle air conditioning system, also referred to as VRV or VRF.