Throttling and expansion are two commonly used methods for generating cooling capacity. The throttling process generally involves a sudden decrease in the flow area of gas through the throttle valve, causing a pressure drop due to gas disturbance. Due to the short time, there is no heat exchange with the outside world, and the enthalpy value of the gas remains unchanged. The throttling process is irreversible, resulting in an increase in entropy. Expansion is the work done by the gas, and the enthalpy of the gas decreases. Ideally, this is a reversible process, so the entropy value of the expansion process remains unchanged.
Since its inception, Kaifeng DEAR Air Separation Industrial Co., Ltd. has manufactured hundreds of high-quality air separation equipment for multiple enterprises in the air separation equipment manufacturing industry, with product grades including large air separation, medium air separation, and small air separation; Product varieties include oxygen nitrogen equipment, oxygen production equipment, high-purity nitrogen, and liquefaction equipment; The process flow includes various air separation equipment such as two-stage distillation low-pressure process, multi-stage distillation hydrogen free argon production, single-stage distillation high-purity nitrogen, two-stage distillation high-purity nitrogen, low-purity gas oxygen liquid oxygen, and full extraction. The product users involve metal smelting, metal materials, petrochemical industry, coal processing, electronics industry, new energy, environmental protection, renewable energy, and so on.
