What are the provisions of Guangxi green building design code for cold and heat sources of air conditioning?

The design specification of green buildings in Guangxi is to save resources and protect the environment, ensure the multi-level health needs of residents and users, promote the sustainable development of Guangxi's economy, and standardize and guide the design of green buildings in Guangxi. Then, what are the provisions of the Code for Design of Green Buildings in Guangxi on cold and heat sources of air conditioning? The following is an introduction to the provisions of the Code for Design of Green Buildings in Guangxi brought by Construction Network on cold and heat sources of air conditioners for reference.

The setting of cold and heat sources of air conditioning system shall conform to the relevant energy-saving provisions of Guangxi local standard Code for Design of Building Energy Efficiency DB45/T392.

When the internal area of public buildings is large and there is stable and sufficient waste heat in winter, water-loop heat pump air conditioning system should be adopted.

Quantitative calculation or computer simulation should be adopted to optimize the capacity of cold and heat sources and the number of equipment, and determine the operation mode of cold and heat sources.

When the performance coefficient of air-cooled heat pump system is lower than 1.8 in winter, air source heat pump cold and hot water units should not be used for heating.

The heat source of central air conditioning system should not use direct electric heating. Refrigerators should not be used to provide cooling capacity for buildings in winter.

For the variable refrigerant flow heat pump multi-connected air conditioning system that needs cooling and heating all year round, after technical and economic comparative analysis, the variable refrigerant flow heat recovery multi-connected air conditioning system should be preferred.

According to the time-of-use electricity price policy of the project location, the specific situation of the building and the time distribution of air conditioning load, after economic and technical analysis and comparison, water storage or ice storage air conditioning cold source can be adopted.

Residential buildings should give priority to the installation of decentralized air-conditioning systems for each household, and the energy efficiency ratio of decentralized room air-conditioners or unit air-conditioners should comply with the relevant provisions of Article 6 "Energy-saving Evaluation Value" of the current national standard "Limited Value and Grade of Room Air-conditioners" GB 1202 1.3.

Hotels, restaurants, hospitals, baths and other places with large consumption of domestic hot water should use heat recovery chillers or air-conditioning cooling water to heat domestic water when the economy and technology are reasonable.

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