Figure 1 Schematic block diagram of the output capacity of a block air-cooled heat pump unit Figure 2 Schematic diagram of the combination of the air-cooled heat pump module IPLV / NPLV Considering the actual operation of the unit, more comprehensive response to the actual energy consumption of the unit, we need to do non-design conditions Related experiments. According to ARI's new standard issued in 1998 - ARI550 / 590-98, the calculation method of IPLV / NPLV (partial load integrated value / partial load non-standard value) is calculated as follows: NPLV = 1 / (1% A + 42% B + 45% C + 12% D) Where: A is the energy efficiency ratio at 100% load B is the energy efficiency ratio at 75% load C is the energy efficiency ratio at 50% load D is 25% The experiment takes a 60KW digital scroll module unit and a 60KW fixed speed module unit as an example (LSQWRF120M / D). The connection diagram is shown in Fig.2. The following is its energy output control principle table. NPLV = 1 / (1% A + 42% B + 45% C + 12% D) = 1 / (1% × 2.60 + 42% × 2.55 + 45% × 2.52 + 12% × 2.41) = 0.397 [Conclusion] : Midea digital scroll modular air-cooled heat pump through the precise control of the operating status of the high-efficiency scroll compressor to provide users with comfort and enjoyment at the same time, air conditioning energy consumption is also significantly reduced. It can be seen from the above calculation, digital scroll modular air-cooled heat pump energy-saving effect increased by 17.1%.
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