High pressure liquid receiver is a normal component in the refrigeration, air conditioning and heat pump systems, but its effects on the system performance are always neglected.

高压贮液器是制冷、空调、热泵系统中的常用部件，但其对系统性能的影响在相关系统性能分析时却常被忽视。

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This design is used mainly for vertical pump systems equipped with pump wells.

这种设计主要用于配有泵池的立式泵系统。

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Sewage source heat pump systems are environmental protection, high efficiency and energy saving.

污水源热泵是高效的环保节能系统。

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The report by AEA technology said emissions of the gases, used in refrigeration, air-conditioning and heat pump systems, were "relatively small" at 3.9% of the total but were increasing.

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Rooftop solar arrays, rainwater catchment systems, a hot water recycling pump, sliding sunscreens, trellises and a few other features are optional upgrades.

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Self-contained vacuum, pump and filter system works without suction lines or other modifications to existing systems.

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