In 2021, central air conditioning will have greater breakthroughs in industries like: data centers, rail transit, medical industries and industrial manufacturing. 2020 is a special year of ups and downs.  After a hard year, with the normalization of epidemic prevention and control, the social order has gradually entered the right track. There are also small and medium-sized projects and in addition to the relatively large impact of the light commercial market, the construction process of large-scale projects has obviously recovered faster, coupled with the country’s "new infrastructure" and other favorable policies to stimulate the application market one by one. It has also brought significant changes to the central air conditioning segment application market. In air-conditioning of the huge application market, this year's data center, rail transit, medical industry and industrial manufacturing deserve our focus. Data center: Judging from the market launch plans of well-known companies, Tencent Cloud and Alibaba Cloud alone intend to invest more than 400 billion in the construction of data centers in the next three years. News such as China Mobile's development of 5G data centers across the country are stimulating the industry to flourish Development. At the same time, the industry's power consumption has also attracted attention. Intelligent operation and green efficiency will become the mainstream trend of this industry. Rail: Urban rail transit, as a key development project in my country, has gained significant growth vitality. Local governments continue to renew and improve infrastructure to further reduce costs and improve operational efficiency. The next ten years will still be the peak period for my country's urban rail transit investment and construction. The development of air-conditioning manufacturers is of great benefit. Medical industry In the past year, the medical industry has developed rapidly. It includes unconventional measures that have been explored due to the spread of the epidemic, as well as planned expansion and new projects. HVAC equipment is a must for high-efficiency and energy-saving hospitals and optimizing the respiratory environment. Factors have become the focus of the game for the main players in the market. Similarly, the air-conditioning cold and heat source system accounts for more than half of the total energy consumption in the entire medical air-conditioning system. Industrial manufacturing In 2020, the national industrial added value above designated size will grow by 6.9% year-on-year. In three categories, the mining industry will grow by 3.5%, the manufacturing industry will grow by 7.5%, and the production of electricity, heat, gas and water will increase by 4%. China is in the industry during the special period of the transformation of a large country into an industrial power, high energy consumption has always been the obstacle to the transformation, and the central air conditioner, as a large ene...

Do you know what is the most important parts on a sewage source heat pump to affect its life spam?Of course it must be the evaporator and condenser quality. Because the heat exchange tube selection directly affects the cost and service life of the heat pump unit. The sewage source heat pump evaporator and condenser are usually used in an environment containing chloride ion corrosion. The heat exchanger tube is corrosion resistant. Performance is particularly important. The commonly used heat exchange tube materials include various duplex stainless steels (such as 2205, 2507, etc.), copper-nickel alloys (B10, B30), and so on. Their respective characteristics are as follows: B10 has better resistance to chloride ion corrosion, and the corrosion rate of B10 is lower than 0.03mm/a. With the increase of time, the average annual corrosion rate is getting lower and lower. And the corrosion resistance does not change much within 50 ℃. However, B10 is not resistant to erosion and corrosion, and its corrosion resistance is greatly reduced in a sandy water environment. The maximum permissible sea water velocity of B10 can refer to the British Naval Ship Engine Code. Therefore, when choosing B10 as the material of the heat exchanger, the following points should be paid attention to: (1) The flow velocity of the B10 nickel-copper pipe should be controlled, and should not exceed 1.5m/s, especially the influence of impurities such as mud and sand should be considered. (2) B10 nickel-copper pipes and fittings should be butt connected by manual argon arc welding. (3) In order to make B10 nickel-copper pipe form a complete protective film corrosion product film in seawater and ensure the expected service life of B10 nickel-copper pipe, before butt welding, B10 nickel-copper pipe and fittings must be cleaned of oil on the pipe end. One is to ensure the welding quality, and the other is to avoid the formation of a local carbon film in the tube. B30 is also an excellent seawater heat exchanger material. Under the same corrosive conditions, its corrosion rate is about 1/3-1/2 of B10; B30 also has the problem of not being resistant to erosion and corrosion. The precautions are the same as those of B10; The upper limit of the flushing rate is higher than that of B10. In general design, the water flow rate of B30 does not exceed 3m/s. Both 2205 and 2507 have good corrosion resistance. When the chloride ion concentration is 1100mg/lL, 2507 will not cause pitting and crevice corrosion. Due to the large relationship between corrosion and temperature, 2205 has a risk of crevice corrosion when the chloride ion concentration is 1100mg/lL and the temperature is higher than 32°C. Therefore, if 2205 is used as the material of the heat exchanger, measures should be taken to eliminate the gaps between pipe connections and intercrystalline gaps (for example, screw connections are not used in the project, and non-metallic gaskets between flanges are used to prevent intercrystalline g...

H.Stars Group was invited by the THE 7th PSME VISAYAS REGIONAL CONFERENCE( PSME) in Philippines, and has successfully presented the HVACR equipment technology on July 16, 2021, through the ZOOM online video conference. The conference on HVACR equipment  was hosted by PSME, and the theme is: “Mechanical Engineers: Moving Ahead with the Challenges Towards Nation Building” . There are total  a total of 200-300 professional engineers conduct online/offline discussions invited as audience and around 30 companies to share their hvac product technology. The following is PSME introduction: PSME was established in 1952. It has 82 branches in the Philippines and 35,000 members. They are professional engineers. H.STARS as the 12th guest H.Stars Group which established in 1992, focusing on the R&D and production of HVAC equipment for more than 30 years. It consists of 8 branch companies. The company history and products range and project reference was presented in English by Ms Nataly Zhang, sales engineering manager of H.Stars Group overseas department , and later on AHU technology and production part was presented vividly by our subsidiary managing director Mr. Micheal Yip . H.Stars Group has shared its leading products of air handling unit, heat pump, chiller, heat exchagners, which specifically explained during the covid-19 pandemic year how H.Stars Group make the contribution by providing high efficient and energy saving hvac products to hospitals and pharmaceutical factories to assist them on the development of the world epidemic in a good direction. Due to the impact of the COVID 19 epidemic, Philippines has cancelled all offline exhibitions .However the diseases cannot stop engineers curiosities and learning spirits.  Nowadays online marketing and conference meetings are becoming more and more popular during pandemic years.  There are  more than 500 guests have been invited  as audiences participated in this seminar and over 200 peoples joined this meeting . H.Stars Group is looking forward to more and more industry's technology seminars online and to benefit all the teams overseas. Finally, H.Stars Group would like to thank our business partner our agent “ Lincon Manufacturing Phils., Inc “ invitation and cooperation to have this successful Webinar on our company and products in Philippine market and thanks to the sincere invitation from PSME too.

To: H.Stars Clients In order to continuous improving H.Stars products quality ,H.Stars Group has upgraded the design on the appearance of the product. Firstly, it retains the original colors of the important components of the unit, highlights the brand and processing technology of the material selection of H.Stars, and makes the appearance of the equipment more distinctive, showing the unique style of the H.Stars products, which will be presented to all customers with a new and fresh images. Secondly, the large tonnage equipment will have a compact design, to greatly reduce the height of the whole machine to keep its structure more reasonable and compact and stable. Moreover, a forklift position is added at the bottom of the frame. As long as the forklift is large enough, loading and unloading is more convenient and safer. . In the future, the company will continue to improve and upgrade the products to make superior products with the most cost-effective and competitive unit in the market. H.Stars (Guangzhou) Refrigerating Equipment Group Ltd. July 16, 2021

H.Stars Group has been invited by the Gas to Power Journal in London UK, and has successfully presented the industrial large-scale heat pump technology on July 5, 2021, through the ZOOM online video conference. The webinar on industrial Heat Pump & Heat Management Systems was hosted by MR. Malcolm Ramsay, a reporter from Gas to Power Journal. There are total four heat pumps companies invited as guests to share their heat pump technology. Below are their details. 1) The first sharing guest is Atlas Copco, a listed company in Sweden. It was established in 1873 and it has about 26,000 employees focus on the compressor technology field and industrial technology field. At the ZOOM meeting, Mr. Rasmus Rubycz has shared the company's CO2 carbon dioxide heat pump technology. 2) The second participant was Universita di Genova, a public university in Italy. Professor Alberto Traverso conducted a rich ORC heat pump technology system and the heat pump prospects in future trends. 3) The third sharing guest is H.Stars Group which established in 1992, focusing on the R&D and production of high-temperature 90 ℃ heat pumps for more than 30 years. It consists of 8 branch companies. The sharing PPT of heat pump technology was written by Liu Zhandong, a general manager of H.Stars Group, presented in English by Ms May Chow, deputy general manager of H.Stars Group overseas department. H.Stars Group has shared its leading products of heat pumps and professionally answered the audience on the two-stage screw compression heat pump technology during Q&A session, which specifically explained the use of this new technology. There are obvious advantages in scope and energy efficiency. 4) The last guest is Turboden from Italy, a subsidiary of Mitsubishi Heavy Industries Group, established in Milan, Italy in 1980, specializing in ORC heat pump and large-scale ground source heat pumps. This meeting was shared by Mr. Andrea Barbon, the company’s manager with the ORC advanced heat pump technology. Due to the impact of the COVID 19 epidemic, European countries have cancelled all offline exhibitions and technical seminars. Although the epidemic is difficult, the learning enthusiasm of industry professionals has never been interrupted. Innovation has led to the transformation and upgrading of the industry from offline to online. More than 300 invited audiences participated in this heat pump seminar. After the online round table seminar, as the audience kept asking questions, the guests made corresponding professional technical answers. The round table meeting went smoothly. The guests of major brands discussed the future development trend of heat pumps. For a green earth, they indicated that they would cooperate in the research and development and innovation of heat pump technology, and continue to contribute to more energy-efficient heat pump products so that green and energy-saving heat pump products can serve tens of millions of enterprises in the industrial and comme...

Congratulations to H.Stars Group becoming a member of the Chinese Society of Refrigeration since 1999, and it has been 22 years so far. H.Stars (Guangzhou) Refrigerating Equipment Group Ltd. was rated as a five-star outstanding factory by the society at the 2021 annual member meeting. This time H.Stars Group stood out from thousands of factories and was awarded this collective honor by the Chinese Society of Refrigeration. It is not only an honor for us, but also a high evaluation and recognition of H.Stars brand . On May 26-28, 2021, the 2021 Chinese Society of Refrigeration Member Conference was successfully held in Nanchang, Jiangxi Province. The organizer of this event, the China Society of Refrigeration, is an academic organization of the national refrigeration and air-conditioning industry, a non-profit academic society of the national refrigeration industry, and is organized as a national first-level society of the China Association for Science and Technology to promote the development of the industry. As a member of the Chinese Society of Refrigeration, H.Stars Group has been fulfilling the responsibilities and obligations of member units since joining the society, vigorously supporting the work of the society, and promoting the development of the industry. In 2021, H.Stars Group of the Chinese Society of Refrigeration Membership was named "Five-Star Excellent Member". H.Stars Group is a foreign-funded enterprise in Hong Kong. Its main business includes the design and manufacture of industrial chillers, heat pumps, AHUs, shell and tube condensers, shell and tube evaporators for 30 years and has been engaged in the production of air-conditioning, heating and industrial equipment, integrating R&D, production, and engineering. H.Stars has focused on the design and development of customized equipment, focusing on product functionalization and system energy saving, using powerful manufacturing technology, combined with decades of engineering experience, to create an integrated refrigeration overall solution, with perfecting the refrigeration industry chain , to provide customers with a full range of cooling and heating equipment solutions.

The 60th (Spring 2021) National Pharmaceutical Machinery Expo has been successfully held in Qingdao World Expo City from May 10th to 12th, 2021. H.Stars (Guangzhou) Refrigerating Equipment Group Ltd. has participated successfully in this exhibition with its self-developed industrial all-in-one machine. The National Pharmaceutical Machinery Expo and the concurrent China International Pharmaceutical Machinery Expo were held in the 1990s and held in spring and autumn each year. Since 2004, they have been continuously listed as key supported exhibitions by the Ministry of Commerce of the People’s Republic of China. It was approved by the Ministry of Commerce as the International Pharmaceutical Machinery Expo in 2008. The exhibits cover various production, processing, testing equipment and related auxiliary equipment required by western medicine, traditional Chinese medicine, biopharmaceuticals, animal medicines, pesticides, some health products and daily chemicals, and food manufacturers. It is recognized by the industry as a professional, international, large-scale, comprehensive exhibit, a large audience, and a pharmaceutical equipment industry exchange platform that integrates trade and research. H.Stars Group ,established in 1992 and is a Hong Kong foreign-funded enterprise ,engaged in the production of air-conditioning, heating and industrial HVACR equipment, with strong R&D team for more than 30 years production and engineering experiences. H.Stars Group is focusing on water chillers for 30+ years, serving 10,000+ customers in the pharmaceutical industry with energy saving and high efficient products. During the Expo, H.Stars Group has exhibited two equipment : water cooled all in one integrated package chiller and air cooled all in one integrated package chiller. Advantages of H.Stars Water Cooled all in one integrated package chiller Chiller Heat recovery advantage: (optional parts) 1.Equipped with our own patented heat recovery device, and the heat recovery can be more than 30% of the refrigeration capacity or realize full heat recovery under the condition of air conditioning. 2. The maximum temperature of hot water can reach 70℃. 3. Heat recovery does not consume energy, and the efficiency of the unit can be increased by 5%. Chiller Intelligent control advantage: 1. The unit is controlled by a microcomputer and can be highly integrated through the centralized management system. 2. The unit can be equipped with a remote management program to feedback system operation information and realize remote service. Easy to install and maintain 1. The unit has been filled with refrigerant and lubricating oil before leaving the factory. Customers only need to connect the inlet and outlet pipes and the power supply to operate. 2. The control interface directly displays the fault content, which is convenient for understanding and troubleshooting the fault in time. Safe and reliable 1. Seven safety protection measures. 2. Single and double loop design...

With a half month Chinese Spring Festival , H.Stars Group has finally come back to work as normal. Here we wish everyone a Happy New Year and prosperous business in 2021 ! The first working day, every staff met the president of H.Stars Group ,Mr. Yuen , greeting him a happy new year and prosperous business in the coming year. Instead, the president give each person a red envelop with lucky money inside. This "red packets" is a Chinese New Year customs, Chinese favorite red, because red symbolizes vitality, happiness and good luck, which also what the president Mr. Yuen wishes everyone the same. In the first working day ,the president Mr. Yuen has given away red lucky money to all the staff. Note: The Chinese Spring Festival is the most important festival for the Chinese people ,because it is a time for all family members to stay together, just like Christmas in the West. All people living away from home go back, and spend half a month time with family members during the Spring Festival. The Spring Festival falls on the 1st day of the 1st lunar month, often one month later than the Gregorian calendar. It originated in the Shang Dynasty (c. 1600 BC-c. 1100 BC).The most important days are Spring Festival Eve and the first three days. The Chinese people  decorates and cleans their rooms featuring an atmosphere of rejoicing and festivity. All the door panels will be pasted with Spring Festival couplets, highlighting Chinese calligraphy with black characters on red paper. The content varies from house owners' wishes for a bright future to good luck for the New Year. Also, pictures of the god of doors and wealth will be posted on front doors to ward off evil spirits and welcome peace and abundance. Waking up on the New Year, everybody dresses up. First they extend greetings to their parents. Then each child will get lucky money as a New Year gift, wrapped up in red paper. Now since we are back to work, all the business and service is back to normal. Welcome to contact us for more support,because H.Stars (Guangzhou) Refrigerating Equipment Group has  specialized in manufacturing an extensive line of Commercial and Industrial Energy Saving HVACR products for 28 years ,our product range :air cooled chiller, water cooled Chiller, Heat pump, Shell&Tube heat exchanger, AHU, cooling tower etc. We are here to give you one-stop HVACR products supplying. For more details ,welcome to send us email : maychow@hstars.com.cn

In summer and winter, it is the busiest time for our after-sales. Because many customers use the unit incorrectly and cause chiller failure. So let's talk about the importance of unit maintenance, how to ensure that the chiller is always in the best condition, maintain the highest efficiency, and extend the life of the chiller. Maintenance refers to preventive maintenance of the unit, and the customer is responsible for formulating unit maintenance procedures based on actual conditions. Qualified equipment management engineers and specialized unit operators are required to perform routine maintenance and regular maintenance on the unit. The maintenance of the unit should be carried out by a qualified chiller maintenance companies. The most basic work in the maintenance of the industrial chiller is to actually record the operating parameters of the unit at appropriate intervals (for example, one hour) every day, and fill in the unit operating parameter table. The operating parameter table can refer to the "H.Stars chiller operating parameter record table" to compile the customer's own suitable format. A true and complete record of operating parameters helps to analyze the possible development trend of the unit's operation, and helps to discover and predict the possible problems of the unit in time, so as to prevent it before they happen. For example, through the analysis and comparison of one-month operation records, it may be found that the difference between the condensing temperature of the unit and the cooling water outlet temperature is increasing. This trend indicates that the cooling water may be dirty or harder, and the condenser tube bundle Scaling is continuing, and the water needs to be softened or cleaned. Poor quality of chilled water and cooling water will not only cause scale in the heat transfer tubes, affect heat exchange efficiency and reduce unit performance, but also corrode the heat transfer tubes and cause major failures of the unit. Customers should perform water quality treatment in accordance with the requirements of GB50050-1995 "Code for Design of Industrial Circulating Cooling Water Treatment". When the chilled water system is a closed system, soft water should be used. If the requirements are not met, water quality treatment should be performed. In addition to the maintenance of the cooling water circuit, there is of course the maintenance of the compressor. The refrigerating oil is like the blood of the compressor. Long-term operation will cause loss and produce a lot of impurities. Regular cleaning and replacement of the refrigerating oil will effectively extend the service life of the compressor so that the operation of the unit remains stable to the maximum extent.

Air-cooled chillers, as a more efficient refrigeration equipment in chiller products, are widely used in the domestic industrial market and become necessary equipment for many industrial production. At the same time, although the industrial air-cooled chiller is equipped with multiple protection devices, these are all to prevent failures from directly damaging the unit. If the company wants to ensure that the air-cooled chiller with high cooling efficiency and long service life, then it must remember to do regular maintenance. Therefore, how should the normal safety maintenance and inspection of air-cooled chillers be carried out? 1) Check the stability of voltage and current When the air-cooled chiller works normally, the voltage is 380V (the voltage of DYJ-01A～DYJ-02A is 220V, and the voltage of other regions abroad also has 410V, etc.), and the current is normal within the range of 11A-15A; 2) Check the compressor regularly The compressor is the "heart" of the chiller, and its quality directly affects the stability of the chiller. The necessary acceptance test for the chiller should be carried out in accordance with the principle of air tightness test first, vacuum test second, sub-item test first, and complete machine test second. 3) Clean regularly In addition to checking the technical performance of the chiller, it is also important to protect the clean appearance of the chiller and the cleanliness of the work site. When the air-cooled chiller is running for 6 months, the entire system must be cleaned, such as pipes, filters, condensers, fans, etc., especially fans. Like our commonly used fans, dust will affect heat dissipation, so the cooling efficiency will Direct reduction 4) Check the meter regularly The temperature control meter is out of control. Replace the temperature control meter. High pressure failure. Poor heat dissipation. The radiator is too dirty. The cleaning radiator is not good enough. Improve the ventilation conditions. The heat dissipation fan does not work. , Replace the high-pressure engine. 5) Check whether the refrigerant has decreased or not regularly Judge according to the high and low pressure gauge values on the front of the air-cooled chiller. When the chiller is running normally, the high pressure is 11-17kg, and the low pressure is 3-5kg. In shutdown state, both high pressure and low pressure are around 0.6kg. The high-efficiency refrigeration function of air-cooled chillers is inseparable from the daily maintenance and safety inspection of the products, so it is very important to check the operation of air-cooled chillers. In addition to the main inspections above, it is also necessary to check the oil level and oil temperature of each compressor, check the main power supply voltage and current, and check whether the set value of the chilled water supply temperature is appropriate. If there is a problem, make changes in time. If you encounter a problem you don't understand, you can consult H.Stars  Group...

We all know that winter swimming has many advantages:  1. It can enhance cardiovascular function.  2. The stimulation of cold water can close the peripheral blood vessels, increase the blood supply of important organs such as heart, brain, liver and spleen, so that more oxygen can be delivered to brain cells in time, which is conducive to the elimination of nervous system fatigue.  3. The skin of those who insist on winter swimming is ruddy, shiny and elastic. And people also hope to enjoy the fun of swimming in winter, but not everyone can bear it. Hstars group constant temperature swimming pool heat pump can be a good solution. 1. Demand analysis of swimming pool with constant temperature Constant temperature swimming pool, also known as indoor constant temperature swimming pool; that is, the temperature of the water in the pool heating system is maintained at 26~28℃, which is suitable for the temperature of the human body. When the indoor swimming pool is designed, the water body of the indoor swimming pool will be heated by various ways. The constant temperature heat pump of swimming pool transforms the low-grade heat energy in the air into the high-grade heat energy through the reverse Carnot cycle principle, which is used to heat the swimming pool water at constant temperature. Swimming pools generally have the disadvantages of high energy cost, fogging and dewing of glass in winter, easy corrosion of decoration, and full of chlorine smell. It is hoped that through the use of the most advanced design concept and advanced technical equipment, through the host and reasonable pool heating system design,not only can ensure the constant temperature and humidity of indoor space and the constant temperature of pool water, but also can avoid the generation of condensate. 2. Heat pump solution for swimming pool with constant temperature The constant temperature swimming pool heat pump of Hstars group focuses on providing hot water for swimming pool, providing a warm swimming environment for swimmers. The dehumidification heat pump with new exhaust system is adopted to control indoor humidity, ensure indoor air quality of swimming pool pipe, and provide a healthy and comfortable environment for swimmers. 3. Principle of constant temperature swimming pool system In winter, the heat pump takes refrigerant as the heat medium, absorbs heat in the air (connected with heat exchange in the middle of the evaporator), improves the heat energy at low temperature to high temperature through the compressor, and heats the circulating water of the system (connected with heat exchange in the middle of the condenser). In summer, the heat pump takes the refrigerant as the refrigerant, absorbs the cooling capacity in the air (connects heat exchange in the middle of the condenser), and transfers the heat of the high temperature position through the compressor It can be reduced to low-temperature potential cooling energy. The circulating water of the refr...

H.Stars recently has manufactured a combined air conditioning system to send cold air from the head of the well to 1,500 meters below the mine, to send cold air, comfort, and protection to the body and work for the mine workers! H.Stars refrigeration has developed an integrated R134A air-conditioning equipment for mine air supply in a short period of time, which has received lots of good feedback from customers after operation. Advantages and characteristics of special air-conditioning equipment for H.Stars mine: 1. Efficient and energy-saving, matching the high-efficiency flooded type heat exchanger produced by H.Stars Group. The unit COP is as high as 2. Reliable operation, adopting Hanbell high-efficiency compressor, high compression ratio, high energy efficiency, stable performance, multi-level energy adjustment, accurate coordination with unit load changes, low noise and low vibration. It has a wide operating range and can adapt to different operating conditions. 3. Green and environmental protection special air-conditioning equipment , using environmentally friendly refrigerant: R134A. 4. Intelligent control, one-key start. Equipped with cloud service function, mobile APP operation, realize remote or centralized management, save management cost. 5. Easy installation and maintenance, integrated design. Reduce customer installation work. 6. Adopt international first-line brand electronic expansion valve throttling device to ensure quality. 7. Use low-noise high-quality fan, high air volume, high efficiency, sufficient dynamic pressure, IP54 protection level. 8. The finned heat exchanger has a V-shaped structure, high efficiency and simplicity, uniform wind speed, and stable heat exchange. 9. Reliable operation, the unit has a variety of safety protection measures to ensure the safe operation of the unit 10. Sending cold supply air and comfort to customers. 11. Matching high efficiency filter. Easy to clean.