In recent years, with the social and economic development, on the one hand, people have higher and higher requirements for living environment, and the five permanent residences with the characteristics of constant temperature, constant humidity, constant oxygen, constant cleanliness and constant staticness can satisfy people's demands for a good living environment; on the other hand, how to make the five permanent residences air conditioning system energy-saving and emission reduction, and how to reduce the carbon emission of the whole life cycle has become a big challenge. Wuhang residence adopts capillary radiation + fresh air dehumidification air conditioning system, capillary cooling and heating source usually adopts ground source heat pump, the system has high efficiency and low carbon and environmental protection, and the fresh air treatment needs high grade cold source, so how to improve the efficiency of the fresh air treatment, reduce the energy consumption of the fresh air treatment, and make the system economic and reasonable, energy-saving and high efficiency, low carbon and environmental protection become the key of the air conditioning system.

On March 14, China Appliance & Electronics World Expo 2024 (AWE 2024) is held in Shanghai New International Expo Center. Under the theme of “Gree, Creating a Better Life”. Gree built three better life experience zones of “Comfortable Life”, “Healthy Life” and “Convenient Life” and held diversified brand activities on site, including Strategy Launch Conference, Food Tasting: Gree Kitchen Appliances for Easy Cooking, Intelligent Home Appliances Promotion and so on, delivering the brand concept of “Gree, Creating a Better Life”.

Consideration of essential parameters is basic, the purchase of new parameters need to keep pace with the times. Air conditioners have been on the market for many years now, its basic functional parameters have been very mature, so air conditioning manufacturers are adding more new parameters to the air conditioning more updated features. In many new parameters, self-cleaning technology, high-speed cooling and heating technology, power-saving technology, intelligent sleep technology, anti-direct blowing technology and remote intelligent link technology stand out, and gradually become a new technology that everyone is very concerned about and happy to accept.

1, conventional air-conditioning design of the inlet and outlet water temperature difference of 5 ℃, large temperature difference air-conditioning system refers to the inlet and outlet water temperature difference greater than 5 ℃ air-conditioning system.

2, chiller chilled water supply and return water design temperature difference is usually 5 ℃, the chiller provides cold water supply and return water temperature difference and flow rate of chilled water;

3, the formula is as follows: Q = M * Cp * △ T;

4, where the specific heat Cp is assumed to be a constant, if the required cold Q unchanged, the temperature difference △ T increased, the flow rate M reduced. This reduces the water flow, increase the water temperature difference (greater than 5 ℃) of the air conditioning system called large temperature difference air conditioning system.

The project is located to the east of the former Luogang Airport runway in Hefei, with a total area of 323 hectares. Originally the site of the former Luogang Airport, the project was initiated in August 2022, with the complete preservation of the 3-kilometer-long airport runway, and the conversion of the original terminal into an urban construction pavilion by means of landscape topography remodeling, sponge city construction, and renewal of the existing buildings to build a green and shared urban park.