냉장
R2026b이 섹션에서는 냉장과 관련된 예제와 리소스를 찾아볼 수 있습니다.
함수
refrigerantChargeProperties | Calculate two-phase fluid states based on charge density and temperature (R2026a 이후) |
Simscape 블록
 | System-Level Refrigeration Cycle (2P) | System-level, two-phase refrigeration block in a gas, moist air, thermal liquid, or two-phase fluid network (R2023a 이후) |
추천 예제
Refrigeration Cycle (Air Conditioning)
A refrigeration cycle for a home air conditioning system. See Model a Refrigeration Cycle for the recommended steps to build this model in the two-phase fluid domain.
Refrigeration Cycle (System-Level)
Model a refrigeration cycle for a home air conditioning system at an abstract system level using the System-Level Refrigeration Cycle (2P) block. This block simplifies the set up of the refrigeration cycle by encapsulating the entire refrigerant loop in one block.
Residential Refrigerator
Models a basic refrigeration system that transfers heat between the refrigerant two-phase fluid and the environment moist air mixture. The compressor drives the R134a refrigerant through a condenser, a capillary tube, and an evaporator. An accumulator ensures that only vapor returns to the compressor.
Refrigerant Modernization
Retrofit a Simscape™ cooling cycle that uses R410a to utilize R32, which is a refrigerant with a lower Global Warming Potential (GWP). The process involves modifying the nominal mass flow rate and refrigerant charge, while retaining the original evaporator and condenser specifications. For more information on designing a cooling cycle, see Model a Refrigeration Cycle and Refrigeration Cycle (Air Conditioning).
Model a Refrigeration Cycle
Explains how to model a closed-loop refrigeration cycle. Simulating a refrigeration cycle requires you to properly tune the component parameters. Imbalances in the net energy transfer can cause runaway system pressure and temperature. Because the refrigerant undergoes energy transfer that causes substantial and rapid density changes, you start by modeling and verifying the response of the individual components. You integrate the components into an open-loop system, and then close the loop.
2상 유체 냉장
이 예제에서는 2상 유체 컴포넌트를 사용하여 증기 압축 냉장 사이클을 모델링합니다. 압축기가 R-134a 냉매를 응축기, 팽창 밸브, 증발기로 순환시킵니다. 압축기에서 나오는 고온 가스가 열 전달을 통해 응축기에서 응축되어 환경으로 전달됩니다. 냉매가 팽창 밸브를 통과하면서 압력이 감소합니다. 이 압력 감소는 냉매의 포화 온도를 낮춥니다. 이를 통해 냉매는 냉장실의 열을 흡수하며 증발기에서 끓습니다. 냉매는 이후 압축기로 돌아가 사이클을 반복합니다. 제어기는 압축기를 켜고 끄는 과정을 반복하면서 냉장실의 온도를 원하는 범위 내에서 유지합니다.
Identify Refrigeration Cycle Operating Points
Define and plot the four operating points of a vapor-compression refrigeration cycle on a P-h diagram. The model calculates the thermodynamic state at each operating point for the specified cycle conditions and computes the cycle performance metrics, including the coefficient of performance (COP) and pressure ratio. To understand the operating points of your own refrigeration system, replace the values in this model with the conditions for your system.
Troubleshoot a Refrigeration Cycle
Demonstrates potential modeling errors in a closed-loop two-phase refrigeration system and shows how to diagnose and fix them. The example covers each error by injecting a mistake, observing the symptoms, identifying the root cause, and applying the fix.
Model a Refrigeration Cycle with Varying Conditions
Extends the Model a Refrigeration Cycle workflow. That workflow develops a refrigeration system that initializes and operates at a nominal operating state. In that example, you choose pressure and enthalpy operating points and load and environment conditions, build open-loop test harnesses, and then close the refrigeration loop.
