This is presented in Fig. 8. The ca

This is presented in Fig. 8. The case which is presented in Fig. 8 is the same as the case of Table 2. Dh/DP Represents the ratio of increased enthalpy to the increase of pressure according to the expansion valve opening change ((h_(i+1)-h_i)/ (P_(i+1)-P_i)) and it can be regarded as a corresponding term of ∂h/∂P. In ideal cases, the COP should be maximized at the point where the ratio of ∆h/∆P to ∆(w/) ̇∆P is the same with present COP and below this expansion valve opening, additional work is much greater than the cooling capacity increase, resulting in lowering the COP. However, with some reasons including the above, the figure shows that the maximum COP locates some biased point. Nevertheless, in the larger open region than 11.5% of opening, it obviously shows that COP is elevated with respect to close of expansion valve and Dh/DP is much larger than ∆ w ̇/∆P . In this aspect, it can be told that this real time control method helps a CO2 refrigeration system to avoid being operated with inadequately large expansion opening

นี้จะนำเสนอในรูป 8. กรณีที่จะนำเสนอในรูป 8 เป็นเช่นเดียวกับกรณีของตารางที่ 2 Dh / DP หมายถึงอัตราส่วนของปริมาณความร้อนที่เพิ่มขึ้นจากการเพิ่มขึ้นของความดันตามการขยายตัวของการเปิดวาล์วเปลี่ยนแปลง ((h_ (i + 1) -h_i) / (P_ (i + 1 ) -P_i)) และสามารถถือได้ว่าเป็นระยะที่สอดคล้องกันของ∂h / ∂P ในกรณีที่เหมาะสำหรับ COP ควรจะขยายในจุดที่อัตราส่วนของΔh / ΔPเพื่อΔ (w /) ̇ΔPจะเหมือนกันกับ COP ปัจจุบันและด้านล่างเปิดวาล์วขยายตัวนี้ทำงานเพิ่มเติมมากขึ้นกว่า ระบายความร้อนที่เพิ่มขึ้นกำลังการผลิตที่มีผลในการลด COP แต่ด้วยเหตุผลบางอย่างรวมทั้งด้านบนตัวเลขแสดงให้เห็นว่า COP สูงสุดตั้งอยู่บางจุดที่ลำเอียง อย่างไรก็ตามในภูมิภาคเปิดขนาดใหญ่กว่า 11.5% ของการเปิดก็เห็นได้ชัดแสดงให้เห็นว่าตำรวจมีการยกระดับด้วยความเคารพในการปิดของวาล์วขยายตัวและ Dh / DP จะมีขนาดใหญ่กว่าΔ W ̇ / ΔP ในแง่นี้ก็สามารถจะบอกว่าวิธีการควบคุมเวลาจริงนี้จะช่วยให้ระบบทำความเย็น CO2 เพื่อหลีกเลี่ยงการถูกดำเนินการด้วยการเปิดการขยายตัวที่มีขนาดใหญ่เพียงพอ

ผลลัพธ์ (อังกฤษ) 2:

This is presented in Fig. 8. The case which is presented in Fig. 8 is the same as the case of Table 2. Dh / DP Represents the ratio of increased enthalpy to the increase of pressure according to the expansion valve opening change ((. h_ (i + 1) -h_i) / (P_ (i + 1) -P_i)) and it can be regarded as a corresponding term of ∂h / ∂P. In ideal cases, the COP should be maximized at the point where. the ratio of Δh / ΔP to Δ (w /) ̇ΔP is the same with present COP and below this expansion valve opening, additional work is much greater than the cooling capacity increase, resulting in lowering the COP. However, with. some reasons including the above, the figure shows that the maximum COP locates some biased point. Nevertheless, in the larger open region than 11.5% of opening, it obviously shows that COP is elevated with respect to close of expansion valve and Dh / DP is. much larger than Δ w ̇ / ΔP. In this aspect, it can be told that this real time control method helps a CO2 refrigeration system to avoid being operated with inadequately large expansion opening is presented in Figure 8. The event will bring. presented in Figure 8 is the same as the case of Table 2 Dh / DP represents the ratio of the amount of heat rising from the increase in pressure from the expansion of the opening of the valve changes ((h_ (i + 1). -h_i) / (P_ (i + 1) -P_i)) and can be considered as the corresponding ∂h / ∂P In the ideal case for the COP should be expanded to the point where the ratio of Δh / ΔP to Δ. (w /) ̇ΔP is identical to the COP and the expansion valve operates more than. Increased cooling capacity to be effective in reducing the COP, but for some reason, the above figures show that COP is the highest point on the bias. However, in the larger opening than 11.5% of the opening was apparently shows that the police are elevated with respect to the closing of the expansion valve and Dh / DP is larger than Δ W ̇ / ΔP in. this sense it can be said that the real-time control will help to avoid CO2 refrigeration system was implemented with the release of growth that is large enough.

ผลลัพธ์ (อังกฤษ) 3:

This is presented in Fig. 8. The case which is presented in Fig. 8 is the same as the case of Table 2. Dh / DP Represents. The ratio of increased enthalpy to the increase of pressure according to the expansion valve opening change ((H _ (I 1) - h_i). (P _ (I 1) - P_i) and it can be regarded as a corresponding term of ∂ H / ∂ P In, ideal cases.The COP should be maximized at the point where the ratio of ∆ H / ∆ P to ∆ (w /) ̇ ∆ P is the same with present COP and below this. Expansion valve opening additional work, is much greater than the cooling capacity increase resulting in, lowering the COP.? However with some, reasons including, the above the figure shows that the maximum COP locates some biased, Nevertheless point.In the larger open region than 11.5%, of opening it obviously shows that COP is elevated with respect to close of expansion. Valve and Dh / DP is much larger than ∆ w ̇ / ∆ P. In, this aspect it can be told that this real time control method helps a. CO2 refrigeration system to avoid being operated with inadequately large expansion opening

This is presented in the form 8.The case is presented in the form 8 is the same as the case of Table 2 Dh / DP mean ratio of quantity of heat rising from the increase of pressure in the expansion of the valve opening change. ((H _ (I 1) - h_i) / (P _ (I 1) - P_i)).In case / ∂ P suitable for COP should expand its spot in the ratio of Δ H / Δ P to Δ (w /) ̇ Δ P is the same with the COP present and below the open expansion valve works more than.COP but, for some reason, as well as the top figures show that the maximum COP located some points on tilt. However, in the region to open larger than 11.5% of open, it obviously shows that the police are elevated with respect to the closing of the valve, the expansion and Dh / DP is larger than Δ. W ̇ / Δ P in this way, it can be said that the way of real time control. This will help the cooling system CO2.