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What should I do if the air source heat pump unit is frosted in winter?
2018-12-11
What should I do if the air source heat pump unit is frosted in winter? How to quickly defrosting it ? Every heating season, there is always frosting problem, because once the frost can not be timely defrosted, the heating effect will be affected, and it might break down the system . However, there is no product that does not frost, and whether it is possible to defrost in time is the key. If the ...
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Dry Type and Flooded Type evaporator structure, principle, difference and advantages and disadvantages
2023-06-12
As we all know, the four major components of the refrigeration system are: compressor, evaporator, condenser, and throttling device. Among them, the type and characteristics of the compressor as the heart of the refrigeration system are more well known than the other three components. In addition, the evaporator is another key component. Do you know about the type and characteristics of the evapor...
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How dose sewage source heat pump works?
2019-04-16
Using domestic sewage? We are saving your MONEY! Sewage source heat pump is one of the most promising heat pump technologies in the world.It is estimated that by 2020, the new residential heating demand area in seven major provinces and cities in north China will exceed 400 million square meters.At present, the area of central heating (non-clean energy) in north China is 5.13 billion square meters...
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UNITED (GUANGZHOU) A / C & R CO.LTD. Muestra Fuerza de Tecnología Avanzada con Nuevos Intercambiadores de Calor en Exposición de Refrigeración China
2019-04-19
El 9 de abril de 2019, UNITED (GUANGZHOU) A / C & R CO.LTD. participó en la 30ª Exposición de Refrigeración de China, llevándose la intercambiador de calor para unidades de tipo spray y la intercambiador de calo...
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The difference between square type crossflow closed circuit cooling tower and traditional open cooling tower
2019-05-08
H.Stars Group water cooled chiller unit always need to adopt cooling tower to supply water to the cooling system . Hence, H.Stars has summarizes the difference between square type cross flow closed circuit cooling tower and traditional open cooling tower. The cooling water of the open cooling tower is directly contact with the air for heat exchange in the packing process, so the purity of the...
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Square Type Contra-flow closed Circuit Cooling Tower Working Principle
2019-05-14
Regarding to water cooled chiller working system, normally it needs to adopt water cooled chiller, cooling tower, water pump or tank etc. To familiar with H.Stars Group water cooled chiller system, here we are introducing you the working principle of square type contra-flow closed circuit cooling towers first. The working fluid (water, oil or other liquid) flows in the coil clock, ...
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Pharmaceutical Factories, by Using These Ways, Can Clean the Air Conditioning System to Save 40% of the Operating Costs.
2019-05-21
Pharmaceutical factories need to meet the relevant requirements of GMP in the production process, and the temperature, humidity and cleanliness must be controlled within a certain range. Under normal circumstances, when there is no special requirement, the temperature should be controlled between 18 ° C ~ 26 ° C; the relative humidity is controlled at 45% ~ 65%. The clean area of pharmaceutical fa...
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How can pharmaceutical air conditioning systems reduce operating costs by 40%
2019-08-30
Pharmaceutical factories need to meet GMP requirements in the production process, and the temperature, humidity and cleanliness should be controlled within a certain range. Under general circumstances, the temperature should be controlled at 18℃~26℃, the relative humidity should be controlled at 45%~65%, the pharmaceutical factory clean area is divided into ABCD level. The C and D level of the wor...
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What should you pay attention in the Design and Construction of 5000RT cold room
2019-09-12
The 5000RT cold room generally equipped with various refrigeration equipment, which can be controlled and maintained stable low temperature facilities. Its basic components are: refrigeration system, warehouse with certain thermal insulation performance, attribute buildings, etc. H.Stars Group has been committed to providing customers with complete low temperature condensing c...
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The Difference between sewage source heat pump and air source heat pump
2020-01-16
The heat pump is based on the reverse Carnot cycle principle. It doesn’t cost many electricity by refrigerant system. Using refrigerant as carrier to continuously absorb the free low-grade heat energy in the heat source and convert it into high-grade heat energy, thus realizing the transfer of low-temperature heat energy to high-temperature heat energy. According to the different heat source ,H.St...
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H.Stars Group has launched the first batch of catalogs with 9 different types
2020-03-25
H.Stars Group has launched the first batch of catalogs with 9 different types. For more details or soft copy of our catalogs, welcome to contact us sales@hstars.com.cn . After launching the first batch of 9 new catalogs, H.Stars Group has been informed by clients overseas that they start to understand our products more. The first batch of catalogs is mainly for medium and large centrifugal and scr...
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Application of double source heat pump unit in automobile painting workshop
2020-07-16
Automobile production and manufacturing process includes stamping, welding, coating and general assembly. According to relevant statistics, coating workshop involves heating, cooling, power, communication control, lighting, etc. energy consumption accounts for a large proportion in the whole manufacturing process (stamping, welding, coating, etc.), accounting for more than 70% of the cost. The gen...
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Impact of New Coronavirus (COVID-19) on Refrigeration
2020-07-23
The current epidemic situation has changed both China and the world. Many companies are facing severe crises, and some large companies cannot bear it. They have begun to reduce personnel costs. News broke out one after another, Hisense Haier layoffs, and some companies laid off 500 people on the first day of resumption of work. In the next six months or longer, regardless of whether large, medium ...
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How Does H.Stars Group Produce A High Quality Water Cooled Chiller
2020-09-18
Since H.Stars Group has been established for more than 28 years so far, some of you might wonder how H.Stars produces a high quality water cooled chiller. Below is the detailed production process with strict quality control system and 100% testing before delivery. 1. Chiller Frame welding: clean the bracket and select the appropriate welding method according to the specifications of the welding ma...
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How to reduce the initial investment and operation cost of low-temperature chiller for chemical plants
2021-04-23
Nowadays, chemical plants always consider how to reduce the initial investment and operation cost when they need to install a low-temperature chiller system for the factory. Because low temperature refrigeration unit is a very important equipment in chemical plant, which plays an important role in safety production. The initial investment of low-temperature refrigeration unit is large, and i...
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90℃ dual source heat pump | Hstarschiller.com
2021-12-07
H.Stars Group has recently signed a contract with 90℃ dual source heat pump unit project for one of the famous automobile factory to replace the traditional boiler. Below are the features of high-efficiency 90-degree dual source heat pump: 1. Special design and customized size for easy installation. 2. Adopt the special compressor of Hanbell high temperature heat pump, with high compression ratio,...
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How to measure brine concentration for the brine chiller
2021-05-21
How to measure brine concentration for the brine chiller ? Saltwater brine chillers are also one of the more commonly used refrigeration equipment. Its refrigerant is the so-called brine solution, which has a low freezing point. It is especially suitable for medium and low temperature chillers to carry cold capacity. The temperature is generally required to be controlled at 0 Below ℃, it is usuall...
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How to design a water chiller system with AHU for pharmaceutical factory workshop
2021-08-20
Nowadays, it’s become more and more aware of pharmaceutical enterprises to realize the significance of building an efficient and green to environment cooling system in the factory, because it can not only help the owner to save the running cost but also contribute to the society by reducing the emissions, especially for those developed countries . But how to design a simple but energy saving cooli...
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