H.Stars (Guangzhou) Refrigerating Equipment Group Ltd.

  In the process of using the chiller, have you encountered the problem that the chilled water of the chiller does not circulate? How to solve the problem of the chilled water not circulating? We all know that under normal circumstances, small industrial chillers have been equipped with chilled water circulation pumps, such as Packaged air-cooled chillers,  box-type water-cooled chillers , and large capacity chillers such as  screw chillers  and open-type water chillers. The chiller does not contain a chilled water circulating pump. At this time, when installing the cooling water system, an external chilled water circulation pump must be installed, so that the cooling water returns to the chiller for cooling after absorbing the heat of the cooling equipment, so that the cooling water supply pipe forms a circulation system. It should be noted that no matter whether the chilled water pump is inside the built-in chiller case or outside the chiller, it is recommended tha...

  An important step in the commissioning of screw chillers and scroll chillers is the charging of refrigerant. Generally,   Oumal screw chillers  are filled with the specified type of refrigerant before leaving the factory. After the chiller arrives at the chiller installation site, first check whether the screw chiller is damaged during transportation, check the high and low pressure gauges, and confirm whether the chiller is in good condition. If it is found that the refrigerant is insufficient or leaking, you need to find out the leak place and fix it, and then add the specified type of refrigerant according to the product instructions. For some screw chillers, the refrigerant needs to be emptied for transportation due to transportation problems. Therefore, after the machine arrives at the installation site, the refrigerant needs to be added again, and the appropriate refrigerant must be added according to the manufacturer's requirements. Before adding refrigerant, the...

  Both   air-cooled screw chillers   and   water-cooled screw chillers   use semi-hermetic screw compressors, and screw compressors have a high energy efficiency ratio. At present, the compressors of screw-type industrial chillers mostly use compressor brands such as Hanbell Bitzer, Fusheng, and Refcomp and other compressor brands. The main difference between the air-cooled screw chiller and the water-cooled screw chiller is the form of heat dissipation. The air-cooled screw chiller uses a fan to dissipate heat, uses air as the cooling medium, and dissipates heat through the air through a fin condenser and a low-noise fan. To cool the refrigerant, the water-cooled chiller uses water as the cooling medium, and then the cooling water cools the refrigerant. Secondly, the installation of the air-cooled screw chiller is simple and does not require a cooling tower. Because the screw chiller machine is relatively large, an external water tank is used. The air-cooled sc...

  With the continuous improvement of domestic industrial production capacity,   industrial chillers   are more and more favored by enterprises. However, during the installation process of industrial chillers, some installation problems are often encountered. So how do we properly install an industrial chiller? 1. After unpacking the new machine, first check the accessories in the box according to the list, so as to avoid the failure of normal installation of the chiller due to the lack of accessories. After confirmation, follow the installation drawings and installation sequence provided by the chiller manufacturer. The water-cooled chiller needs to be installed with a cooling water system. After the cooling tower pipeline is installed, ensure that the water circulation is normal. 2. Please ensure that the working voltage of the chiller is stable and normal. Make sure the power socket is in good contact and the ground wire is grounded reliably. It is necessary to pay atte...

  About the definition of cold storage room or cold room and how I can help your products and your business. One of the most important points that we must take into account is that we have to make a proper and well-done design. As well as taking into account its maintenance constantly, since it is necessary to avoid economic losses. If you need to acquire, and you plan to invest, in some cold rooms or refrigeration rooms, you will surely know that you will obtain many benefits for your business and products, and this will be a consequence of you increasing your customers and you can see the growth of your business. Maintenance in a cold room. Every day invests money, time and effort to grow their business, but also need your equipment is working perfectly, for them it is important to ask the advice of who created the cooling chamber or cold room . Regular maintenance can take your worries away and save you a significant amount of money in the long run. THE ELEMENTS O...

  Refrigeration Evaporators is a main heat exchanger used in the refrigeration system, which directly affects the efficiency of the refrigeration system. As we all know, the air cooler will use different fin spacing according to the required cold room temperature.Widely used fin spacing is 4mm, 4.2mm, 6.4 ~ 8mm,9.0mm, 10mm, 12mm. If the  cold storage temperature lower, the fin spacing larger. If the selection is unreasonable, the fins will frost quickly, and the passage of the wind will soon be blocked. It is difficult to cool the cold storage, and the compressor efficiency will reduce, resulting in increased power consumption in the refrigeration system. According to engineering experience, generally 0 ℃ ~ 20 ℃ chiller room, such as workshop air conditioner, cool warehouse, cold storage room, fresh storage warehouse, air conditioning warehouse, ripening warehouse, etc., choose a fan with a blade distance of 4mm or 4.2mm; -16 ℃ ~ -25 ℃ cold freezer room, such as...

  As we know that the simplest way to build heating system for hot water for dormitory is adopting boiler with coal burning ,which will cause CO2 increase for the earth. Here is the good example how to design the heating system with energy saving heat pumps to protect the environment. The project is the central air conditioning project and hot water project of a pharmaceutical factory dormitory building, canteen. The dormitory building has a total air conditioning area of 5700 square meters, 200 people and the canteen area of 1044 square meters. In the original design institute scheme, 14 air source heat pump units are used in the dormitory building, 4  air source heat pump units  are used in the canteen, and the machine rooms are located on the roof of each building. Our company has optimized the system design: (1) The dormitory building and canteen are combined into one system (2) The system adopts air source multi-functional unit. Project requirements Name Area Air con...