In response to General Secretary Xi Jinping's important speech at the 75th General Debate of the United Nations General Assembly on "striving to peak carbon dioxide emissions before 2030 and achieve carbon neutrality before 2060", and actively promoting the upgrading of energy efficiency in the heat pump and air conditioning industry, colleagues in the heat pump and air conditioning industry once again gathered in Shunde, Guangdong from March 1 to 3, 2021, to celebrate the grand convening of the HAPE2021 "New Shanghai Cup" Heat Pump and Air Conditioning Parts Matching Procurement Festival and the "International Heat Pump and Air Conditioning Parts Energy saving Technology Seminar and Exhibition".
On the morning of March 3rd, the "Heat Pump Frequency Conversion and Control Method Technology Forum" was held, chaired by Professor Li Fan from Guangdong University of Technology. This forum has received naming support from Hetai Electronic Technology Co., Ltd. in Shunde District, Foshan City.
The forum was first presented by Dr. Martin Sabel, Secretary General of the German Heat Pump Association (BWP), who shared the theme of "Latest Data and Prospects of the German Heat Pump Market in 2020". Dr. Martin Sabel mentioned in the sharing that Germany is gradually developing from an old energy world to a new energy world, where the electricity, transportation, and heating sectors are coupled with renewable resources (renewable electricity) provided by solar and wind energy; In the heating sector, heat pumps are the main technology and an important technology for providing efficient electricity; Renewable energy has grown rapidly in the electricity sector in recent years. In 2019, renewable energy accounted for 42% of the entire electricity sector in Germany, and in 2020, the proportion of renewable energy in electricity production in Germany was slightly over 50%; Heat pumps are considered the most important energy conversion technology in the heating and construction sectors in Germany to date; It is estimated that approximately 120000 heat pumps will be sold for heating in 2020.
Subsequently, Jiang Hongbo, General Manager of Hetai Electronic Technology Co., Ltd. in Shunde District, Foshan City, delivered a speech. In order to thank the enthusiastic participation of the guests on site, a lottery was also held, and the prize was a Huawei (5G) mobile phone.
In the following time, Feng Jianhong, Senior R&D Manager of HeErTai Electronic Technology Co., Ltd. in Shunde District, Foshan City, gave a keynote speech on "Smart Drive, Connected Future". The report elaborated on the differences in "fixed frequency" and "variable frequency" technologies and products, as well as the advantages of HeErTai's complete solution for variable frequency heat pump electronic control. Through unique control technologies such as Maximum Torque to Current Ratio Control (MTPA), Automatic Torque Compensation Control, Automatic Weak Magnetic Control, Dual Vector Limitation Protection Technology, Ultra Low Frequency Starting Technology, and Wide Range Motor Operation, HeErTai Variable Frequency Electronic Control can provide a complete set of solutions for variable frequency human control, such as: Drive+Main Control+Line Controller (WIFI or GPRS Internet of Things) multi domain full solution, export Europe and America variable frequency heat pump pool machine field full solution, Northern heating variable frequency heat pump dual supply/triple supply field full solution, variable frequency cold chain one to many commercial super cold cabinet full solution, variable frequency cold chain one to many commercial super cold cabinet full solution, variable frequency heat pump water heater field full solution. Provide solutions, etc.
Professor Ding Guoliang from Shanghai Jiao Tong University gave a keynote report on the impact of APF testing methods on the design of air conditioning heat pump products. The report includes an introduction and current status of multi split energy efficiency standards, analysis of the differences between IPLV and APF indicators, key design points for improving APF components, digital design methods for heat pump air conditioning products, and rapid design for improving APF. He pointed out that the deviation between the maximum APF value measured in the experiment and the predicted maximum value is only 1.5%, indicating that the maximum APF value predicted by the model can be used to guide the design and experimental testing of actual air conditioners. Each experiment adjusts the fan speed, valve opening, and compressor speed to make the capacity and energy efficiency under the five test conditions closer to the predicted values.
The theme shared by Huang Zhimin, Deputy General Manager of the Emerging Business Unit of Shanghai Haili Electric Co., Ltd., is "Compressor Product Solutions under the New Form of Heat Pump Market". The report is divided into two parts: new forms of development in the heat pump industry, and reflections on heat pump technology and compressors. It is mentioned that the domestic heat pump industry has a fast pace of product updates and many new terms, but the technical solutions are not consistent. However, Haili rotary compressors can provide users with comprehensive choices, such as centralized hot water (5-16HP), heat pump hot water (0.1-3HP), heat pump drying (1.5-13.5HP), centralized heating (4-16HP), household heating (2-8HP), hot air blower (1.5-3HP), and pool heat pump (1-16HP).
Chen Long, the head of the Technical Department of Zhejiang Yingte Technology Co., Ltd., presented a report on the impact of application environment on dry shell and tube heat exchangers and risk control. The report analyzed the common failure modes of shell and tube heat exchangers and proposed preventive and control measures for their storage, transportation, installation, commissioning, operation, and maintenance to help customers take preventive and control measures in advance, reduce quality problems, ensure stable operation of the unit, and improve user satisfaction.
Yuan Lei, the Asia Regional Director of HAVC OEM at Grundfos Water Pump (Shanghai) Co., Ltd., shared "The 'back wave' from the water pump family - the advantages and potential of high-efficiency variable frequency pumps in heat pump system applications". The report provides a detailed introduction to the advantages of the Grundfos high-efficiency variable frequency pump series products applied to various heat pump systems. And practical cases have shown that using Grundfos high-efficiency variable frequency pumps can save up to 73% of energy consumption. Grundfos high-efficiency variable frequency pumps can also bring performance innovations such as energy saving, anti jamming, fast exhaust, high integration, and digital extension to the future of heat pump systems.
At the same time of the conference, a theme discussion was held on the application prospects of variable frequency technology in heat pump air conditioning products. Feng Jianhong, Senior Manager of R&D at Hetai Electronic Technology Co., Ltd. in Shunde District, Foshan City, Zhu Boyong, R&D Manager at Zhejiang Zhongguang Electric Co., Ltd., Wu Zongjin, Chairman of Guangdong Bilai Jieneng Equipment Co., Ltd., Su Jian, Technical Director of Guangzhou Wanjulong Electric Co., Ltd., Huang Zhimin, Deputy General Manager of Emerging Business Unit at Shanghai Haili Electric Co., Ltd., and Yuan Lei, Director of HVAC OEM Asia at Grundfos Water Pump (Shanghai) Co., Ltd., conducted in-depth discussions on the current status, development significance, and existing problems of variable frequency technology applications
The forum, with the theme of "Heat Pump Frequency Conversion and Control Methods", conducted an in-depth analysis of the current application status, advantages, and future trends of frequency conversion technology in heat pump and air conditioning products. It also summarized and concluded the experience, lessons learned, and precautions. The conference will be more conducive to promoting the application and development of frequency conversion technology in heat pump air conditioning products.
