If opening of an expansion valve is

If opening of an expansion valve is decreased without any other changes, the refrigerant mass flow rate is reduced and evaporator pressure becomes lowered. The lowered evaporator pressure enhances heat transfer in evaporator while the reduced mass flow rate suppresses heat transfer. However, the impact of the decreased mass flow rate on the overall heat transfer coefficient becomes relatively small when refrigerant state in evaporator is two-phase state (Heo et al. 2013). This means the temperature difference term in Eq. (9) becomes larger while the overall heat transfer coefficient U does not decrease significantly. As a result, constant cooling capacity controller raises the evaporating pressure by decreasing compressor frequency to maintain the cooling capacity constant and the evaporating temperature does not decrease much.
ถ้าเปิดวาล์วขยายตัวจะลดลงโดยไม่เปลี่ยนแปลง อัตราการไหลเชิงมวลน้ำยาครอบจะลดลง และความดัน evaporator จะลดลง ดัน evaporator ต่ำลงช่วยถ่ายเทความร้อนใน evaporator ขณะอัตราการไหลโดยรวมลดลงไม่ใส่ถ่ายเทความร้อน อย่างไรก็ตาม ผลกระทบของอัตราการไหลโดยรวมลดลงในค่าสัมประสิทธิ์การถ่ายโอนความร้อนโดยรวมจะค่อนข้างเล็กเมื่อรัฐน้ำยาครอบใน evaporator two-phase รัฐ (เฮาเอ็ด al. 2013) ซึ่งหมายความว่า ระยะความแตกต่างของอุณหภูมิใน Eq. (9) จะใหญ่กว่าในขณะที่ภาพรวมความร้อนถ่ายโอนสัมประสิทธิ์ U ลดอย่างมีนัยสำคัญ ดังนั้น ควบคุมกำลังระบายความร้อนคงที่เพิ่มความดัน evaporating โดยลดความถี่คอมเพรสเซอร์เพื่อรักษาค่าคงกำลังระบายความร้อน และอุณหภูมิ evaporating ลดลงมาก

ผลลัพธ์ (อังกฤษ) 1:

If opening of an expansion valve is decreased without any other changes, the refrigerant mass flow rate is reduced and evaporator pressure becomes lowered. The lowered evaporator pressure enhances heat transfer in evaporator while the reduced mass flow rate suppresses heat transfer. However, the impact of the decreased mass flow rate on the overall heat transfer coefficient becomes relatively small when refrigerant state in evaporator is two-phase state (Heo et al. 2013). This means the temperature difference term in Eq. (9) becomes larger while the overall heat transfer coefficient U does not decrease significantly. As a result, constant cooling capacity controller raises the evaporating pressure by decreasing compressor frequency to maintain the cooling capacity constant and the evaporating temperature does not decrease much.If you open the expansion valve is reduced without changing the. Namyakrop mass flow rate is reduced and pressure evaporator evaporator pressure drops will help lower heat transfer in the evaporator, while mass flow rate reduced heat transfer omit. However, the effect of the mass flow rate decreases in heat transfer coefficients by a relatively small total when the State namyakrop State in two-phase evaporator (Hao et al. 2013), which means that the phase difference of temperature in Eq. (9) will be bigger, while the heat transfer coefficients Overview U decrease significantly, so. Constant control of the cooling capacity increases by evaporating pressure compressor frequency reduction to maintain constant cooling capacity evaporating temperature and decreases.

ผลลัพธ์ (อังกฤษ) 2:

If opening of an expansion valve is decreased without any other changes, the refrigerant mass flow rate is reduced and evaporator pressure becomes lowered. The lowered evaporator pressure enhances heat transfer in evaporator while the reduced mass flow rate suppresses heat transfer. However, the impact of. the decreased mass flow rate on the overall heat transfer coefficient becomes relatively small when refrigerant state in evaporator is two-phase state (Heo et al. 2013). This means the temperature difference term in Eq. (9) becomes larger while the overall heat. transfer coefficient U does not decrease significantly. As a result, constant cooling capacity controller raises the evaporating pressure by decreasing compressor frequency to maintain the cooling capacity constant and the evaporating temperature does not decrease much.
If the expansion valve is reduced without changes. The rate of mass flow liquid cover is reduced and pressure evaporator is reduced pressure evaporator lower the heat transfer in the evaporator at a flow rate decreased without heat However, the effect of flow rate overall. into the overall heat transfer coefficient is relatively small on the cover in the liquid state evaporator two-phase state (House Ed al. 2013), which means. Phase difference of temperature in Eq. (9) is larger than the overall heat transfer coefficient U decreases significantly, so control is cooled at constant pressure evaporating less frequently compressor to maintain its value. It was cooled and the evaporating temperature is much lower.

ผลลัพธ์ (อังกฤษ) 3:

If opening of an expansion valve is decreased without any, other changes the refrigerant mass flow rate is reduced and. Evaporator pressure becomes lowered. The lowered evaporator pressure enhances heat transfer in evaporator while the reduced. Mass flow rate suppresses heat, However transfer.The impact of the decreased mass flow rate on the overall heat transfer coefficient becomes relatively small when refrigerant. State in evaporator is two-phase state (Heo et al. 2013). This means the temperature difference term in Eq. (9 becomes.) Larger while the overall heat transfer coefficient U does not decrease significantly As, a result.Constant cooling capacity controller raises the evaporating pressure by decreasing compressor frequency to maintain the. Cooling capacity constant and the evaporating temperature does not decrease much.
.If the expansion valve is reduced without change. Mass flow rate in the family will be reduced, and the pressure is reduced. Evaporator evaporator push down to help heat in evaporator while the flow rate decrease in overall supply heat However.Evaporator two-phase state (Hao ed al.2013), which means that the phase difference of temperature in the Eq.(9) is bigger than the overall heat transfer coefficient, while U reduce significantly, so the control's thermal constant increases the pressure. By reducing the frequency evaporating compressor to maintain constant's ventilation and heating temperature.Decreased.