R&D Capability
R&D Competencies
HVAC & REFRIGERATION SOLUTIONS
TOEFLEX ENGINEERING
With over 20 years of industry experience in refrigeration R&D and production, our engineering team delivers tailored solutions for the following product lines:
Household refrigerators
Commercial refrigerators
Medical refrigerators
Custom refrigeration devices
Heat Pump Dryer
Our engineering team has accumulated extensive industry know-how tailored to a wide range of application scenarios.
We support customers throughout product development and deliver cost-optimized customized solutions.
We draw on technical resources from our partner manufacturers to deliver practical value to clients through the following services:
Design & Optimization of Cooling Components for Diverse Application Needs.
Design & Optimization of Cooling Components for Diverse Application Needs.
Design & Optimization of Cooling Components for Diverse Application Needs.
CFD Software
System Simulation Software
CAD and CFD tools ensure smooth data exchange with customers
We make design and optimisation of all cooling components：
Condensers：
Static skin and ventilated condensers
Evaporators:
FOT, WOT, POT, Roll bond, Microchannel evaporators
Fans:
Fans for evaporator and condenser assembly
Compressors：
Definition based oncalorimetric data
Others：
Design of entire cooling system
CONDENSER DESIGN & OPTIMIZATION
Trade-off curve analysis balances condenser sizing based on cost and performance targets
Example 1: Design of the air-cooled condenser, the fan assembly and their layout inside the refrigerator’s machine compartment.
Machine Compartment Design
Example 2: Design of the air-cooled condenser, the fan assembly and their layout inside the refrigerator’s machine compartment.
Evaporator Design & Optimisation
Example 3: The performance of seven evaporator variants (Roll-bond, Wire-on-Tube, Pot-type, Foamed, Topless, Bracket and Zig-zag) was evaluated for refrigeration applications.
Roll bond
WoT
PoT
Foamed
Fan Speed 960rpm
Topless
Bracket
Zig-Zag
Example 3: From the chart, users can select the optimal evaporator by balancing cost and performance metrics. Temperature gradients at the bottom indicate potential condensation risks inside air ducts.
Example 4: Optimized development of Wire-on-Tube evaporator for direct drop-in replacement of traditional Roll-bond evaporator within fridge cabinet assembly.
Fan Design & OPTIMIZATION
Example 5: Determination of fan aerodynamic characteristics by CFD numerical simulation.
Complete Cooling System Simulation (1D)
Example 6: Refrigeration system design leveraging 1D system simulation.
Lumped-parameter calculation methods are adopted.
• Simulation Model Composition：
The model comprises refrigeration cycle, cabinet structure, ambient conditions and electronic control system.
• Refrigeration cycle:
Compressor, hot-gas tube, condenser, capillary tube, fan, evaporator, suction line heat exchanger, refrigerant charge
• Cabinet & Ambient Conditions:
PU insulation thickness, outer overall dimensions, air duct layout, ambient temperature
• Electronic Control:
Thermostat, fan motor, damper control assembly
Example 6: Refrigeration system design leveraging 1D system simulation.
Once the cooling system simulation model is built, parameter effects can be analyzed systematically, substantially shortening the test cycle and reducing development costs
Example 7: Condenser selection guided by full-system refrigeration simulation.
Natural convection condenser, Skin-type condenser, Forced air condenser
Example 8: Compressor Selection: Trade-off Curve Analysis for Compressor Energy Grade Comparison
Example 9: Analysis of the influence of ambient temperature on overall cooling system performance.