Project Description:
This project through technology research, research for the hotel, hotel, school and other buildings of ground source heat pump heating and cooling technology; hotel and hotel industry to explore alternative heating, heat pump system to optimize the match; through technology promotion and application , The establishment of integrated heat pump heating, refrigeration and air conditioning, hot water in one integrated utilization demonstration sites, through the demonstration project to heat pump heating and cooling technology in Guangdong has been widely promoted.
Combined with the unique climate characteristics of the southern region, in addition to ground source heat pump for building air conditioning, especially suitable for hot water supply hotels. Located in the subtropical region of Guangdong, the climate is hot and the annual average temperature is about 23 ℃. It is one of the three economically developed regions in China. Commercial prosperity, many floating people, a variety of commercial buildings, lodging hotels, located in the forefront of the country, therefore, to promote the use of ground source heat pump provides a huge potential market.
Due to the global warming, the power load in Guangdong has also been greatly affected. In July and August 2003, the electricity load was nearly 20% higher than that of the same period of 2002, while one-third of the electricity load came from air-conditioning electricity. Currently, the number of air-conditioners in every hundred households in Guangzhou has exceeded 160, the power consumption of air conditioners is obviously higher than that of other cities, and there is a growing trend. At present, residential buildings and other residential buildings in Guangdong air-conditioning and domestic hot water use more "household air-conditioning air conditioner + water heater (gas, electricity)." With the improvement of living standards of residents, this traditional mode will undoubtedly greatly increase the load of electricity in Guangdong, resulting in electricity shortage. To this end, it is necessary for Guangdong to work on energy conservation in buildings and related equipment.
Guangdong hotel and hotel industry, refrigeration and air conditioning and heating status is the common use of "refrigerator + oil boiler" mode. The data show that the hotel heating in Guangzhou consumes about 1,500 tons of fuel a month, the resulting environmental pollution problems, heat island effect has affected the quality of life of urban residents. To this end, Guangzhou City, during the Ninth Five-Year Plan period, put forward a heating and oil-saving scheme for catering and entertainment industries. However, due to the high gas prices, the operating cost of "oil to gas" increased by more than 2 times So far, it can not be implemented. However, the reform of the heating system of the oil-fired boiler in the hotel and hotel is imperative and has been listed into one of the major projects during the "Tenth Five-Year Plan" in Guangzhou City. The capital invested in the renovation will exceed 500 million yuan.
Therefore, the application of ground source heat pump technology in Guangdong has a good prospect. For general residential buildings such as residential buildings, schools and hospitals, the use of this technology instead of the traditional "household air-cooled air conditioner + water heater (gas, electricity)" mode can save 20% of electricity consumption and relieve the pressure of electricity shortage in Guangzhou ; For hotels and other buildings, the use of technology to replace the "refrigerator + oil-fired boiler", you can save 40% of the monthly emissions of 5,000 tons of CO2 emissions to the atmosphere, 60 tons of SO2 gas, which for improving the region's cities Atmospheric environment has very important significance.
The main technical performance and indicators:
The technical innovation of this project is mainly reflected in:
(1) Ground source heat pump systems, while providing domestic hot water required for hotels and restaurants, generate chilled water for air conditioners, which consumes as much power as a chiller unit that generates the same cooling capacity without increasing the user's electricity load. Therefore, Completely saving the amount of fuel required to provide domestic hot water, saving a lot of operating costs, significant economic benefits;
(2) The heat generated by the ground source heat pump system is derived from the waste heat energy discharged from the ground source and the indoor of the building, and this part of the waste heat mainly comes from the solar energy and the heat emitted by the equipment and human body in the building. Therefore, the ground source heat pump system Mainly make full use of renewable energy;
(3) The heat pump system has no harmful substances discharged during operation, and at the same time it can reduce the heat island effect caused by the thermal pollution caused by the building due to the reduction of the heat emitted by the combustion of the oil to the environment and the heat released by the refrigeration system to the environment.
The main technical indicators are:
(1) ground source heat pump performance coefficient ≥ 3.5;
(2) Ground temperature 15 ~ 30 ℃;
(3) Refrigeration temperature 7 ℃, heating temperature 55 ℃;
(4) annual operating costs savings of more than 35%.
Application and application conditions:
The technical achievements studied in this project can be widely applied to all kinds of buildings in Guangdong Province, especially hotels, hotels, schools, villas and other buildings, which have matured technically. As an alternative to traditional heating and cooling mode, they have great Development potential.
Has been applied:
In 2002, the Guangzhou Institute of Energy Conservation, Chinese Academy of Sciences, undertook the key national key project of the Tenth Five-year Plan - demonstration system of high temperature ground source heat pump and heating, air conditioning and hot water supply. In 2001, the "Boiler + Chiller "System has been transformed, and achieved good economic benefits. In addition, in Beijing, ground-source heat pump demonstration projects have been set up in graduate dormitory buildings of Graduate School of Chinese Academy of Sciences, China Science Press, and Temple of New Energy demonstration buildings. In Guangdong, the projects have been successively held in the CAS Guangzhou Institute of Energy, Zhaoqing Dynasty Hotel , Zhuhai Academy of Agricultural Sciences, Guangdong Foreign Business Center and other places to establish a ground-source heat pump demonstration project.
Already have the promotion and application conditions:
Ground source heat pump core technology is the use of groundwater (soil, groundwater, seawater, lake water) temperature in summer than the ambient temperature is low, the winter than the high temperature characteristics, to achieve efficient cooling, heating function. Since the research, this technology has been successfully applied to all kinds of buildings and has realized the functions of building air-conditioning in summer, heating in winter and water supply throughout the year. Compared with the conventional "refrigerator + boiler" system, this technology can save energy throughout the year 40%. As a clean and renewable energy source, unlike the fossil fuel that emits large amounts of combustion products such as CO2, SO2, NOx, dust and the like while obtaining energy and generating electricity, the ground source has obvious social and environmental benefits .
Ground source heat pump has established a production base, and successfully produced a series of products for the pilot base. The technology has been Beijing Zhong Keneng Energy High-tech Co., Ltd. for industrialization, and Jiangyin Kai Fu Refrigeration Equipment Co., Ltd. Jiangyin in the Energy Branch of Science and Technology Co., Ltd. as a heat pump unit production base has been developed and produced A variety of products in Beijing, Guangdong, Hebei, Yunnan, Henan, Tibet and other places has been widely used.
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