Product export
Global sales of products such as air-to-air heat exchangers and air conditioning units
Manufacturer of air to air heat exchangers and air conditioning units, made in China
Our services
CNCSP provides both standardized products and customized solutions tailored to your needs, helping businesses reduce energy costs and boost efficiency.
Sold in China
Marketing services and market development for global products in China
Chinese website
Construction and online promotion of Chinese websites, SEO optimization
Cultural exchange
Organize cultural exchange activities between China and the world
PRODUCTS AND SERVICES
Focus on producing fresh air units, air conditioning units, heat exchange boxes, etc. using air-to-air heat exchangers and applied heat exchange technology
Application scenarios
If you have a need for air to air heat exchangers, you can contact us
Modeling heat transfer in solids and fluids in COMSOL Multiphysics involves using the Heat Transfer in Solids and Fluids interface, which supports conduction, convection, and radiation. This interface is ideal for conjugate heat transfer problems, where heat exchange occurs between solid and fluid domains. Below is a concise guide to get you started.
Key Steps for Setting Up a Model
- Select the Physics Interface:
- Use the Heat Transfer in Solids and Fluids interface, typically included with a Conjugate Heat Transfer multiphysics interface (e.g., with laminar or turbulent flow).
- The interface defaults to a Solid model for all domains, with a Fluid model available but inactive. Activate the Fluid model for fluid domains to include convection.
- Define Geometry:
- Create your geometry, separating solid (e.g., a heat sink) and fluid (e.g., air or water) domains. For example, a heat sink cooling an electronic chip or a pipe with flowing fluid.
- Use predefined geometries like heat sinks to save time.
- Assign Material Properties:
- Define thermal conductivity, density, and heat capacity for solids and fluids. For fluids, include viscosity and temperature-dependent properties if needed.
- For phase change (e.g., melting), specify latent heat and phase transition properties.
- Set Boundary Conditions:
- Solids: Apply heat sources, thermal insulation, or fixed temperatures. Use “Open Boundary” or “Infinite Elements” for continuous material beyond the model.
- Fluids: Specify inlet/outlet conditions (e.g., temperature, velocity, or pressure). For convection, couple with a fluid flow interface (laminar or turbulent) or define a velocity field manually.
- Include radiation if needed, using surface-to-surface or participating media models.
- Mesh the Model:
- Use a finer mesh at solid-fluid interfaces to capture boundary layer effects. Enable physics-controlled meshing or add boundary layers for fluids.
- For complex geometries, automated mesh refinement can optimize accuracy.
- Solve and Postprocess:
- Solve using a stationary or time-dependent study, depending on your problem (e.g., transient cooling of a thermos).
- Visualize results like temperature profiles, heat flux, or velocity fields. Use postprocessing tools to compute quantities like cooling power.
Tips
- Start Simple: Begin with a model like a heat sink or thermos cooling example.
- Use One Physics Interface: Avoid separate Heat Transfer in Solids and Fluids interfaces. Define solid and fluid domains within a single Heat Transfer or Conjugate Heat Transfer interface for proper boundary coupling.
- Check Peclet Number: For fluid domains, calculate the Peclet number to assess if convection dominates conduction. A low Peclet number indicates negligible convection.
- Couple with Fluid Flow: For accurate convection, couple the heat transfer interface with a laminar or turbulent flow interface to compute the velocity field.
Common Pitfalls and Fixes
- Unexpected Results: Ensure boundary conditions are correct (e.g., inlet temperature, heat flux). Check for uniform fluid properties or mesh issues.
- No Heat Transfer at Boundaries: Verify solid-fluid interfaces are properly coupled. Use a single physics interface and check boundary layer meshing.
- Non-Smooth Temperature Profiles: Refine the mesh or check material transitions (solid to fluid) for sharp conductivity changes.
For hands-on learning, start with a heat sink model, which covers both solid and fluid domains and guides you through conjugate heat transfer. Extend it to visualize airflow velocity and temperature.
Overview of CNCSP
- Purpose: CNCSP is a professional service platform that facilitates procurement, supply chain management, and sourcing of materials and equipment, primarily for construction and related industries in China. It aims to connect buyers with reliable suppliers, streamline purchasing processes, and ensure quality and timely delivery.
- Services:
- Supplier Sourcing: Identifies and audits suppliers to ensure reliability and quality.
- Quality Control: Conducts inspections and oversees production to meet standards.
- Logistics Management: Coordinates shipping and delivery to minimize delays.
- Cost Optimization: Leverages China’s competitive manufacturing to reduce costs.
- Custom Solutions: Offers tailored procurement for specific project needs, such as equipment for building projects.
An Air Handling Unit (AHU) is a critical component of HVAC systems, designed to regulate and circulate air in buildings. It functions by conditioning air through processes like heating, cooling, humidifying, dehumidifying, and filtering, ensuring optimal indoor air quality and thermal comfort. AHUs typically consist of fans, coils, filters, dampers, and control systems, tailored to specific environmental needs. They are widely used in commercial buildings, hospitals, schools, data centers, and industrial facilities to maintain consistent temperature, humidity, and air purity. AHUs can integrate with ventilation systems to introduce fresh air, remove stale air, and enhance energy efficiency. Their versatility makes them essential for creating healthy, comfortable indoor environments while meeting energy and regulatory standards.
Air Handling Unit (AHU)
What is an AHU with Heat Recovery?
- Function: An AHU conditions and circulates air, typically in commercial, industrial, or residential buildings. With heat recovery, it captures energy (heat or coolness) from the outgoing stale air and transfers it to the incoming fresh air without mixing the two airstreams.
- Purpose: Reduces heating/cooling demands, lowers energy costs, and maintains a comfortable, healthy indoor environment.
Air handling unit (AHU)With Heat Recovery
What is an AHU with Heat Recovery?
- Function: An AHU conditions and circulates air, typically in commercial, industrial, or residential buildings. With heat recovery, it captures energy (heat or coolness) from the outgoing stale air and transfers it to the incoming fresh air without mixing the two airstreams.
- Purpose: Reduces heating/cooling demands, lowers energy costs, and maintains a comfortable, healthy indoor environment.
How It Works
- Winter: Warm exhaust air heats the cold incoming air via the heat exchanger, reducing the need for additional heating.
- Summer: Cool exhaust air pre-cools the warm incoming air, lowering cooling demands.
- Energy Savings: Recovers 60-95% of heat, significantly cutting energy use.
Customer feedback
Resolve all issues related to heat exchange and fresh air for customers
This is a proactive and efficient team that can quickly handle my product requirements, from design to production
They can help customers make full use of exhaust gas and excess heat energy, reduce production costs, and improve energy efficiency.