Condensing pressure control method for air-cooled cooling-water machines under wide temperature conditions

• Main Authors: LIU XIAO, WANG SHUWAN
• Format: Patent
• Language: Chinese; English
• Published: 07.04.2020
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; WEAPONS

The invention relates to the technical field of air-cooled cooling-water machines, in particular to a condensing pressure control method for the air-cooled cooling-water machines under wide temperature conditions. With the method, the air-cooled cooling-water machines can run stably under the wide temperature conditions. The air-cooled cooling-water machine unit under the wide temperature conditions comprises a compressor, a condensing system, an expansion valve and an evaporator which are connected sequentially to form a cooling circulating system; and the condensing system comprises multiplecondensers connected in parallel and a condensing fan for forcing the condensers for heat convection heat exchange. The control method includes the following steps that S1, the running temperature condition of the air-cooled cooling-water machine unit is set; S2, the environment temperature is detected, the current running mode of the air-cooled cooling-water machine unit is judged according to the comparison result of t