Standardize the pressurization operation of chillers
If R134A or R22 is used as the refrigerant for an electric refrigeration unit, its pressure can reach 0.6MPa or 0.8MPa at 20 ℃. As the temperature increases, the pressure will also increase. Therefore, in order to ensure the airtightness of such units, the final pressure maintaining pressure should reach 0.6MPa. This is a relatively dangerous pressure, what is the concept of such pressure acting on the human body?
The area of a palm is approximately 150 square centimeters, with 0.6MPa=6kg/cm ²， That is to say, a weight of 150 * 6=900kg is pressed on the palm of one hand.
A small condensate heat exchanger is about this weight, and pressing the entire weight of a condensate onto one palm is the concept.
When the pressure inside the crew is high, if a pressure bearing component suddenly collapses and acts on a relatively small point in the human body, if it is close, it is no less powerful than a bullet!
For this reason, when the unit needs to be pressurized to 0.6MPa during positive pressure maintenance, we have developed a charging operation process to avoid pressure impact injuries from a technical and operational perspective.
Frontline personnel carrying out pressure charging operations should fully recognize the dangers of this operation, maintain vigilance at all times during the operation, strictly follow the requirements of the charging curve, and carry out staged pressure charging. Ensure your personal safety!
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Explanation T1~3 time: charging time When the pressure reaches 0.3 and 0.45 MPa, stabilize for 15 minutes each, observe if there are any abnormal scenes, and remain vigilant. When the pressure reaches 0.6MPa, the pressure filling is completed, and the holding time is ≥ 36 hours. If there is no decrease in pressure, it is considered qualified. |
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Lithium bromide solution manufacturer
About us
Flier Refrigeration Engineering Technology Co., Ltd is a professional technical service enterprise integrating central air-conditioning host sales, spare parts sales, unit repair and maintenance.
Factory located in Zhenjiang, Jiangsu, covering an area of 25,000 square meters ,and has been built with 1 R&D center, 1 pilot plant, 3 An innovative production, learning, and research base composed of a professional production workshop and its corresponding infrastructure. At present, the company has become a well-known technical service provider in the field of central air conditioning in China.
The company’s main business scope includes: central air-conditioning maintenance, cleaning and technical services; cooling tower and fan coil cleaning and maintenance services; custom processing of lithium bromide solution; sales of lithium bromide solution special impurity separators; central air-conditioning host and various zero Sales of accessories; installation and sales of central air conditioning systems, etc.
Contact us
Ms. Lillian GUO
Zhenjiang FLIER Refrigeration Engineering Technology Co., Ltd
Jiangsu, China
Tel: + 86 15358588768(Whatsapp)
Wechat：15358588768
E-mail: mdguolijuan@zjflier.com
