当前位置: Home / Faq / Biogas purification FAQ /

What are the main ways in which the throttling effect cooling capacity of air separation equipment is generated?

What are the main ways in which the throttling effect cooling capacity of air separation equipment is generated?
Nov 06, 2024
Author: DEAR AST

Throttling effect cooling capacity is due to the pressure reduction, volume expansion, molecular interaction potential energy increases, resulting in the kinetic energy of molecular motion decreases, causing the gas temperature to decrease, so that the gas has a certain ability to absorb heat.
In air separation equipment, the throttling process usually occurs at the throttle valve, but the throttling effect cooling capacity is not generated only by the part of the gas that passes through the throttle valve. In air separation equipment, the throttle effect cooling capacity is closely related to the compression process. In the compressor, the air is compressed and the pressure rises, the temperature also rises. The compressed gas has high pressure energy and internal energy. After throttling the low temperature, low pressure gas flow through the heat exchanger, can be higher from the temperature of the gas heat absorption, will be the latter cooled, and the former heat absorption after the temperature is restored to the temperature before throttling. In this process, the low-temperature gas has the ability to absorb heat, that is, for its throttling effect cooling capacity.
The size of the throttling effect cooling capacity can be determined by calculating the enthalpy difference before and after throttling. Since the throttling process is an isenthalpic process (i.e., the enthalpy of the gas before and after throttling remains unchanged), the refrigeration capacity is equal to the difference between the enthalpy of the gas after throttling and the enthalpy of the gas before throttling. This difference is actually equal to the value of enthalpy reduction in isothermal compression, i.e., the refrigeration capacity of the throttling effect is already present in isothermal compression, and is manifested in the last two processes (throttling and heat absorption).

DEAR Air Separation Solve YourWhat are the main ways in which the throttling effect cooling capacity of air separation equipment is generated?You can also learn about otherBiogas purification FAQ about DEAR Air Separation, and solve the problem for you.
Didn’t find the problem encountered?
Please contact live chat or email for quick help.
Related FAQ
More Related FAQ
What precautions should be taken when designing a complete set of air separation equipment?
2024.11.22
In case of sudden power failure during the operation of small air separation unit, the following steps should be followed:   First, open the vent valve (anti surge valve) of air compressor to prevent the air compressor from surging and causing the air compressor to reverse due to air backflow;   Then check whether the molecular sieve adsorber switch should be interlocked to close, if not, it should be man...
2024.11.21
Need more information?
Contact us for more details about our air separation equipment, solutions and services.
Products
  • Large air separation
  • Small air separation
  • High purity nitrogen air separation
  • Liquefaction air separation
  • Complete air separation
  • Biogas purification
  • Air separation parts
Need more information?
Tel:+86-19837850537
© Kaifeng DEAR Air Separation Industry Co., Ltd.. All rights reserved.
Online
Inquiry
Email
Top