[Mechanical Equipment Technology Edition] Daily Question 20191110: Basics of Refrigeration – Common Units in Refrigeration – Pressure (1)

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This post was last edited by Zhang Xinlin from Binglun Environment on 2019-11-12 at 12:46. [Daily Question] is divided into three sections: Basics of Refrigeration, Equipment Selection Solutions, and Maintenance of Refrigeration Equipment. [Reward Rules] Those who comment on this post will receive 1–3 wealth points, while those who provide accurate answers will get 10–15 points; the rewards are valid for two days, and the answers will be announced after those two days. Basics of Refrigeration – Pressure (1) I. Overview The ratio of the magnitude of the pressure acting on an object to the area over which that force is applied is called pressure. In engineering, the pressure generated by gases and liquids is referred to as pressure. The international unit of pressure is Pa. Since the unit of pressure is too small, KPa and MPa are used as units of pressure in refrigeration systems. The conversion relationship is as follows: 1 MPa = 10^3 kPa = 10^6 Pa. Other units of pressure commonly used on refrigeration control panels include bar. Question (1): 1 bar = (0.1) MPa. Question (2): Absolute pressure – Gauge pressure = (0.1) MPa. ============================== Premium promotion: Daily questions on mechanical equipment – Refrigeration sector; its value and functions: https://bbs.hcbbs.com/thread-2848974-1-1.html. Internal training materials for manufacturers of screw refrigeration compressors related to mechanical equipment: https://bbs.hcbbs.com/thread-2850090-1-1.html